ML20261H466

WCS CISF - Revision 4 to Safety Analysis Report, Chapter 2, Attachment G, Technical Specifications for Towers

ML20261H466
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Site:	Consolidated Interim Storage Facility
Issue date:	09/02/2020
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WCS Consolidated Interim Storage Facility Safety Analysis Report Revision 4 Page G-1 Attachment G Technical Specifications for Towers (120 pages)

0 Solar Radiation Sensors 0

0 Solar energy is a significant element in large-scale atmos-pheric motion, and as a result it has an important place in meteorology. It is directly relat ed to atmospheric stability, and is used in determining stability classes for pollution studies. Met One Instruments supplies solar sensors to meet virtually any monitoring requirement.

Model 095 Pyranometer The Model 095 Pyranometer incorporates a multi-junction differential thermopile and a precision ground optical glass hemisphere which is transpar-ent to wave lengths 0.285 to 2.80 microns. It is used for high-precision, broad-band measurements of incident solar radiation.

Features o Differential thermopile detector o High accuracy, broad bandwidth o Temperature compensated o Rapid response time o Built-in leveling devices The detector element is of wirewound-plated construction with black and white seg-ments. When exposed to solar radiation the differing absorp-tivity of the black and white surfaces develops a tempera-ture differential. The ther-mopile then produces a volt-age proportional to the solar radiation. Built in thermistor circuitry is incorporated to eliminate the effects of ambient temperature.

The single hemispherical optical glass dome has a waterproof seal, but can easily be removed for repairs. The case is cast alu-minum, painted white, and is fit-ted with a desiccator, circular level, and leveling screws. A mounting base with a vertical 3/4" IPS pipe simplifies field installation of the sensor. This rugged instrument is capable of withstanding mechanical vibra-tions of up to 20 G's.

Met One Instruments, Inc.

Modelo~:

Corporate Sales & Service: 1600 Washington Blvd., Grants Pass, OR 97526, Phone (541) 471 -7111, Fax (541) 471 -71 ~

El Distribution & Service: 3206 Main Street, Suite 106, Rowlett, TX 75088, Phone (972) 412-4747, Fax (972) 412-4716 http:l/www.metone.com

Solar Sensor Specifications:;

0 Model095 Me>~el 394 Model 096 Model097 Spectral Response nanometers 285 to 2800 285 to 2800 (clear)"

400 to 1100 250to 60000 microns 0.28 to 2.80 0.2~ to 2.80 (clear) 0.4 to 1.1 0.25 to60 Calibration Integrating hemisphere lnte ~rating hemisphere against Eppley B&W against transfer approx. 1 cal cm 2 app rox. 1 cal cm*2 under natural daylight standard and min 1, at 25°C min

1. at 25°C compared to a tungsten-halide light source Sensitivity**

11 mV/kwatt meter 2, 9 rr-. ""'V /kwatt meter-2, 8.0 mV/kwatt meter-2 75 mV/kwatt approx.

approx.

with 100 Ohm load.

meter*2, approx.

approx.

Impedance 350 Ohms, approx.

65C>

Ohms 1000hm load 40hms (dependent upon sensor sensitMty)

Temperature Dependence

+/- 1.5% constancy

+/-1 ~

constancy

+/-0.15%/degree C, N/A from -20 to +40° C fro,....-, -20° to +40° C maximum Linearity

+/-1% from Oto

+/-0. ES% from Oto

+/-1% from Oto N/A 0

1400 watts meter 2 28C> 0 watts meter 2 3000 watts meter*2 Response time 5 seconds ls~cond 10 microseconds 10.5 seconds (1/e signal)

(1/~ signal)

(10% to 90%)

Cosine Response

1:2% from normalization

+/- 1 ~

from normalization Corrected up to 82° N/A 0° -70° zenith angle; o*-..,..-0° zenith angle Incident angle.

+/-5% 70°-80° zenith

+/-3~ from 70°*80° Azimuth error less angle zen *"th angle than 1 % over 360° at 45° elevation Physical Size 5.75" dia. x 21" H 5.7 es" dia. x 23~ H 3" dia. x 19" H 2.8" W x 2.5" H (including mount) x 37" L Weight 4 lbs (1.8 KG) 9 lb :s (4 KG) 1.2 lbs (.54 KG) 3 lbs (1.3 KG)

(including mount)

Mounting Leveling plate and Lev Ealing plate and Leveling plate and Mounting plate mounting base included mo L-1 nting base inc1uded mounting base included for support Requires #1552 fitting ReC'.::::9 uires #1552 fitting Requires # 1552 fitting arm included or similar device or s. i milar device or similar device Cable

1. 1138-xx

1. 11 38-xx

1. 1832-xx

1. 2437-xx (xx = length in feet)

• Contact factory for other ranges.

• • Sensitivity varies among sensors of the same type.

()

A Cafibration Certificate Is supplied with each sense::> r.

0 0

Met One Instruments MODEL 96-1 SOLAR RADIATION SENSOR OPERATION MANUAL 1600 Washington Blvd.

Grants Pass, Oregon 97526 Telephone 541-471-7111 Facsimile 541-471-7116 Regional Sales & Service 3206 Main St., Suite 106 Rowlett, Texas 75088 Telephone 214-412-4747 Facsimile 214-412-4716

()

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c 0

096*1 SOLAR RADIATION SENSOR 1.0 GENERALINFORMATION 1.1 1.2 1.3 The Model 096-1 Solar Radiation Sensor Is an accurate and sensitive sensor using a LI-COR sensing element and designed for the continous measurement of solar radiation.

Typically, the sensor is mounted with the 1289 Mounting Plate.

Spectral Response. The relative spectral response of the silicon photodlode does not extend uniformly over the full solar radiation range. A typical response curve Is presented In Figure 1.1. The response Is very low at 0.4 µm and then Increases nearly linear lo a cutoff near 1.1 µm. Changes In the speclral distribution of the Incident llght, coupled with the non-uniform spectral response, can cause errors In the photodlode output. Hull3 shows that In the 0.4 to 0.7 µm range, the spectral distribution of sun plus sky radiation on a horizontal surface Is remarkably constant even when clear and overcast days are compared. However, Gates2 Indicates that the major change in spectral distribution of solar radiation occurs In the near lnfared where water vapor absorption takes place on cloudy days. Data collected at low solar elevations can show significant error because of altered spectral distribution which changes In atmospheric transmission. This Is a small part of the dally total so the possible observed error usually has an Insignificant effect on dally Integrations.

The area under the spectral irradiance curve of the source Is dlrecUy porportlonal to the energy received by a horizontal surface. Under specific but typical conditions, energy received on a completely overcast day has been estimated to be 11.3% of that received on a clear day. When both spectral distributions are weighted according to a typical response curve of a silicon photodlode, the response on this cloudy day Is 12.6%.

Therefore, errors Incurred under different sky conditions, due to the spectral response of the photodlode, will be small. The field tests of Federer and Tanner1 and Kerr, Thurtell and Tanner4 confirm this conclusion.

Calibration. The 096-1 Pyranometer has been calibrated against an Eppley Precision Spectral Pyramonmeter (PSP) of which the calibration Is periodically confirmed. The calibration was performed under daylight conditions by a computer sampling of Instantaneous readings from the Eppley and LI-CCR pyranometers. Instantaneous readings were taken continuously for 1 O minutes and then averaged. Sequential ten minute averaging periods were run from sunup to sundown for 3-4 days. These ten minute averages were then evaluated and used to compute an average calibration constant. The uncertainty of calibration Is +/- 5%.

Calibration Table 1-1 Model 096-1 Solar Radiation Sensor Specifications Calibrated against an Eppley Pyranometer under natural daylight clear conditions.

Absolute accuracy under these conditions is

+/-5%. All sensors are calibrated to within 1 % of each other.

096-1 SR Rev. 7193

Sensitivity Linearity Stability Response Time (10-90%)

Temperature Dependence Cosine Correction Azimuth Error Sensor Case Mounting

2. 0 INSTALLATION 2.1 096-1 Solar Radiation Sensor Installation Typically 80 mlcroamp/1 ooo watts m-2.

Maximum deviation of 1 % to 3000 watts m-2.

Less than 2% change over a 1 year period.

1 O microseconds

+/-.15% per °C maximum Cosine corrected up to 82° angle of Incidence.

Less than 1 % over 360° at 45° elevation.

Weather-proof anodized aluminum case with diffuser and stainless steel hardware. Precision level supplied.

A 1289 Mounting Plate Is provided.

A.

Typically, the sensor Is mounted to the 1289 Mounting Plate. Refer to Figure 2-1. Using a 1552 Mounting Clamp, the radiation sensor and mounting plate may be directly mounted to Met One Instruments' Model 191 Mounting Arm, or similar.

B.

For proper operation It Is necessary that the sensor be level. Level the sensor using the three outer screws. Lock Into place using three Inner screws.

C.

The sensor is supplied with an attached 1832 cable. The white or red wire Is the

+ signal. The black wire is the common.

3.O 096-1 SOLAR RADIATION SENSOR CHECK-OUT 3.1 Model 096-1 Solar Radiation Sensor has been calibrated at the factory. It will not change unless it is damaged. To check for proper operation of the sensor, expose the sensor to bright sunlight and check datalogger or translator for reasonable output, and then completely cover the sensor with a black tape and check for an output of near zero.

096-1 SR Rev. 7193 0

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0

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3.2 When this sensor is used with a Met One Instruments translator, the translator calibration is matched to the individual sensor. If used with dataloggers or other recording devices the use of a terminating resistor is required.

3.3 Terminating Resistor A.

The resistor is used to convert the current output signal to a voltage output signal, and is required when the sensor is connected to mllllvolt recording devices.

B.

A precision 1 oon or1 son resistor has been supplied with the sensor to allow for the correct interface between the sensor and mllllvolt recording electronics (not required when the 096-1 Is used wjth the Met One lnstryments Translator circuit cards). Place this resistor In parallel with the slgnal leads from the sensor. The output signal is then equal to:

Mv *I

• R Where:

Mv.. Output microvolts I... Output signal In mlcroamps A = Resistance In ohms of terminating resistor

4. O MAINTENANCE AND TROUBLESHOOTING 4.1 General Maintenance Schedule*

A Inspect sensor for proper operation as per Section 3.0.

B.

Clean sensor element monthly using clean rag or tissue.

• schedule Is based on average to adverse environments.

REFEAEJ\\CES

1. Federer, C.A., and C.B. Tanner, 1965. A simple integrating pyranometer for measuring daily solar radiation. J. Geophys, Res. 70, 2301-2306.

2. Gates, D.M.,1965. Radiant energy, its receipt and disposal. Meteor. Monogr.,6,No.28, 1-26.

3. Hull,J.N.,1954. Spectral distribution of radiation from sun and sky. Trans.mun.Eng.

Soc.(London),19:21-28.

4. Kerr, J.P.,G.W Thurtell, and C.B. Tanner,1967. An integrating pyranometer for cllmatologlcal observer stations and mescoscale networks. Journal of Applied Meleorology,6,688*0694.

096*1 SR Rev. 7/93

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L(~Xv IDENTIFY CADLE Ill" FROll EACH EllD-DASH NUllHER : LENGTH IN FEET.

Sl'Lln: 11132 CARLE TO 090 SENSOR CADLE AS SHOIN l!'I DETAIL A.

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I NmMD c I RIDRAIN I/PARTS LIST l sv*Mll I llH DESCRIPTION QTY LUG. SPADE. Ill 3

CABLE. 2 llRE, SHIELDED

,\\/R SLEEVllCC. l/4". SBRINI 12" SLEEVING. I/II". SllRINI

.v1I llRE. 22 AIC. llR/BRN 111-SLttVlllC, 1/4", CLEAR SBRINIC A/R MET ONE INSTRUMENTS ASSY. CABLE. 096 SOLAR RADIATION

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') Wind Speed Sensor l1llt!1 0

The Model 014A Wind Speed Sensor is an accurate, durable, and economical anemometer suitable for a wide range of wind study applications. It is designed for long term unattended operation in most meteorological environments Features o Range to 100 mph o Low starting threshold o Broad temperature operating range o Accuracy of +/- 1 5%

o Stainless steel and aluminum construction Operation For maximum operat*onal reha-b1llty, the sensor uses a sealed magnetic read switch This switch produces a series of con-tact closures at a rate propor-tional to wind speed With its pulsed output, the Model 014A lends itself to applications involving both digital and analog measurement systems.

The pulsed signal may be con-verted to standardized analog voltage and/or current output by use of translator electronics.

o;rect connection to a datalogger is also possible The robust aluminum cup assembly normally supphed has a distance constant of < 15 feet. For greater sensitivity, the optional Lexan plastic cup assembly may be specified, which has a distance constant of <5 feet.

Construction The construction of the sensor reflects the requirement for relia-bility and durability. Only the Accuracy, reliability and economy make the Model 014A Wind Speed Sensor an ideal choice for most applications.

best corrosion resistant materi-als. such as stainless steels and anodized aluminum are used.

The Mode' 014A sensor uses a quick-connect sensor cable.

Cable length may extend hun-dreds of feet without affecting measurement performance.

Specifications Range Starting threshold Accuracy Distance Constant Standard Fast Response Operating Range Contact Rating Weight Mounting Ordering Information Standard Model Fast Response Model Cable 0-100 mph 1 mph

+/-.25 mph or 1.5% FS

<15 feet (Metal Cup Assy)

<5 feet (Lexan Cup Assy)

-50° C to +70° C 10 mA maximum 11 ounces Model 191 Cross Arm 014A (Metal Cup}

014A-1 (lexan Cup)

1. 1805-xx (xx= length in feet)

Met One Instruments, Inc.

Corporate Sales & Service: 1600 Washington Blvd., Grants Pass, OR 97526, Phone (541) 471*7111, Fax (541) 471-7116 Oistnbution & Service* 3206 Main Street, Suite 106, Rowlett, TX 75088, Phone (972) 412*4747, Fax (972) 412*4716 http://Www metone.com 014A *REV. 12/26.195

0 0

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0 Met One Instruments MODEL014A WIND SPEED SENSOR OPERATION MANUAL Document No. 014A-9800 1600 Washington Blvd.

Grants Pass, Oregon 97526 Telephone 541-471-7111 Facsimile 541-471-7116 Regional Sales & Service 3206 Main St., Suite 106 Rowlett, Texas 75088 Telephone 972-412-4715 Facsimile 972-412-4716

0 0

0

0 014A WIND SPEED SENSOR 1. 0 GENERAL INFORMATION 1. 1 The Met One 014A Wind Speed Sensor uses a durable 3-cup anemometer assembly and simple magnet-reed switch assembly to produce a series of contact closures whose frequency Is proportional to wind speed. This sensor Is usually used in conjunction with the 191 Crossarm Assembly and a translator module, but may also be used directly with a variety of dataloggers.

1. 2 Sensor Cable has a quick-connect connector with vinyl-jacketed, shielded cable. Cable length is given in -XX feet on each cable part number.

Table 1 - 1 Model 014A Wind Speed Sensor Specifications performance Characteristics Maximum Operating Range Starting Speed Calibrated Range Accuracy Temperature Range Distance Constant9 Standard (1812 Aluminum Cup Assembly)

Optional ( 1708 Lexan Cup Assembly) 0-60 meters/sec or 0-125 mph

.5 meters/sec or 1 mph 0-50 meters/sec or 0* 100

+/-1.5% or 0.25 mph

-50" c to ssa c Less than 15 feet Less than 5 feet

• The distance traveled by the air after a sharp-edged gust has occurred for the anemometer rate to reach 63% of the new speed.

Electrjca! Characterjstjcs Output Signal Physical Characteristics Weight Finish Contact closure at frequency V= (f x 1.7892) + 1 mph 1.5 lbs.

Anodized Use with 191 Crossarm Mounting Fixtures Cabling 2-Conductor Cable, XX is cable length In feet Optional Accessories (a)1708 Lexan Cup Assembly, Fast Response Type 014A-9800 REV. 9/96 1

2. 0 INSTALLATION

2. 1 014A Wind Speed Sensor Installation A

Check to see that the cup assembly rotates freely (threshold, bearing check).

B.

Install the sensor into the fitting on the end of the 191 mounting arm. (THE END WITHOUT THE ALIGNMENT BUSHING) Install iust deep enough to allow cable connection. (Reference the mounting detail in Figure 2*1 ).

C.

Apply a small amount of silicone grease to the set screws to prevent 'freezing up' in corrosive environments. Tighten the locking set screws-do not over tighten.

D.

Connect the Cable Assembly to the connector receptacle on base of sensor. Secure the cable to the mounting arm using cable ties or tape.

2.2 Wiring The Cable Assembly contains three wires.

Black

=

RB:I

=

White/Brn =

014A-9800 REV. 9/96 Signal Common Cable Shield 2

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014A Wind Speed Rev. 4/ll/89 w

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(J TABLE 3*1 MODEL 014A WIND SPEED SENSOR CALIBRATION WIND VELOCITY VS OUTPUT FREQUENCY RPM VS WIND SPEED Speed In Miles/Hr V mph RPS F hz RPM MPS MPH F hz 10 2.515 5.030 100 3.113 6.964 3.333 20 5.310 10.619 200 5.779 12.928 6.667 30 8.104 16.208 '"

• 300 8.446 18.892 10.000 40 10.899 21.797 400 11.112 24.856 13.333 50 13.693 27.386 500 13.778 30.820 16.667 60 16.488 32.975

• 500 16.444 36.785 20.000 70 19.282 38.564 700 19.110 42.749 23.333 80 22.077 44.153 800 21.777 48.713 26.667 90 24.871 49.742 900 24.443 54.670 30.000 100 27.666 55.331 1000 27.109 60.641 33.333 110 30.460 60.920 1100 29.775 66.605 36.667 120 33.255 66.509 1200 32.441 72.569 40.000 1300 35.108 78.533 43.333 SPEED IN METERS/SEC 1400 37.774 84.497 46.667 V mps RPS F hz 1500 40.440 90.461 50.000

()

2.5 1.284 2.567 1600 43.106 96.426 53.333 5

2.846 5.693 1700 45.772 102.390 56.667 7.5 4.409 8.819 "1800 48.438 108.354 60.000 10 5.972 11.945 12.5 7.535 15.071

• STANDARD CALIBRATOR TEST POINTS 15 9.098 18.197 17.5 10.661 21.323 V mph =..BeM

+1 20 12.224 24.449

16. 767 22.5 13.787 27.575 25 15.350 30.701 27.5 16.913 33.827 V mps =..BfM... +.44704 30 18.476 36.953 37.5067 32.5 20.039 40.079 35 21.602 43.205 Based on equation I*.5589 (V*1) 37.5 23.165 46.331 where I ls Iha output frequency.

40 24.728 49.457 V Is wind speed mHes per hour.

42.5 26.291 52.583 RPS

• cup revolution par sacond.

45 27.854 55.709 1 MPH

• 0.44707 meters/1ec 47.5 29.417 58.835 50 30.980 61.961 52.5 32.543 65.087 55 34.106 68.212 57.5 35.669 71.338 60 37.232 74.464

,~ )

014A-9800 REV. 9/96 3

0 0

3. 0 OPERATIONAL CHECK-OUT ANO CALIBRATION 3. 1 014A Wind Speed Sensor Check-Out A.

Spinning the anemometer cup assembly will produce a series of pulses.

To verify sensor output, monitor this signal with either a plug-in Translator Module, Datalogger or an Ohmmeter. Refer to Frequency vs. Wind Speed Table 3-1. Spin slowly and monitor output signal. A wlndspeed calibrator may be used to check operation at different RPM points.

8.

Inspect the cup assembly for loose cup arms or other damage. The cup assembly cannot change calibration unless a mechanical part has come loose or has been broken.

4. 0 MAINTENANCE AND TROUBLESHOOTING

4. 1 General Maintenance Schedule*

6-12 month Intervals:

A.

Inspect sensor for proper operation per Section 3.0.

B.

Replace Wind Speed Sensor bearings In extremely adverse environments per Section 4.6.

12-24 month intervals:

A.

Replacement of sensor bearings.

24-36 month intervals:

A.

Recommended complete factory overhaul of sensor.

• Schedule is based on average to adverse environments.

Table 4-1 TROUBLESHOOTING TABLE Symptom Probable Cause Remedy No sensor output Faulty reed switch Replace reed switch No sensor ouput Faulty bearings Replace bearings No sensor ouput Faulty cable Check Connections 014A-9800 REV. 9/96 4

4.3 4.4 014A Wind Speed Sensor: 6-12 Month Periodic Service A.

At the crossann assembly, disconnect the Sensor Cable from the Sensor (leave the cable secured to the crossarm) and remove the Sensor from the fitting on the crossarm assembly.

B.

Loosen the two set screws on the side of the hub and remove the anemometer cup assembly.

c.

Visually inspect the anemometer cups for cracks and breaks and make sure that each is securely attached to the cup assembly hub.

D.

Inspect the Sensor for any signs of corrosion and dust buildup.

E.

Rotate the Sensor hub assembly to make sure that it turns freely and that the Sensor bearings are not damaged. Make sure that the magnet assembly is not contacting the reed switch. (Ref. Fig. 4.1).

F.

A moisture drain vent is located on the base of the Sensor. Make sure that this vent Is clear.

G Re-install Sensor as per installation procedure (Section 2.0) and verify proper operation using procedures In Section 3.0.

014A Wind Speed Sensor General Assembly (refer to 014A Assembly Drawing)

The following steps cover basic disassembly:

A.

At the crossarm assembly, disconnect the Sensor Cable from the Sensor (leave the cable secured to the crossarm) and remove the Sensor from the crossarm assembly.

B.

Loosen the two set screws and remove the anemometer cup assembly.

C.

Remove the three (3) flathead screws at the top of the Sensor and lift out the bearing mount assembly, taking care not to break the wires.

4. 5 Reed Switch Replacement Procedure Use the following procedure to replace Sensor Reed Switch:

A.

Remove bearing mount assembly as per Section 4.4.

B.

Unsolder the leads of the Reed Switch (10) and remove the switch from the two mounting terminals (13).

c.

Solder the new switch onto the sides on the switch mount terminals, taking care not to stress the point where the leads enter the glass reed switch body. (Solder quickly to reduce excess heat to reed switch.) Measure the distance between the bottom of the rotating magnet and the top of the switch envelope, as shown In Figure 4 -1. The spacing should measure between.010 and.020 Inch.

014A-9800 REV. 9/96 5

0 0

( _)

D.

Monitor the output of the translator module and spin shaft for an upscale indication. If switch seems to falter, adjust switch slightly closer to magnet.

E.

If possible, connect the shaft to an 1800 RPM motor, using a flexible coupling and verify an output of 108 mph with a 50% duty cycle.

F.

Reassemble Sensor by reversing procedure.

FIGURE 4-1: REED SWITCH INSTALLATION Vll!.W Of' r:zEED ~nt:H i::ru:>,.. l!Crn:)M1 MCuo.iT ~l"TC:.H A.°= ~.

4. 6 Bearing Replacement Procedures

.010 '"TO.oto 0

The bearings used in 014A Sensor are speclal stainless steel ball bearings with

)

a protective shield. Bearings are lubricated and sealed. Do not lubricate bearings as the lubrication will attract dust and will form an oil/dust glue. Use the following procedure for bearing replacement:

A Remove bearing mount assembly as per Section 4.4.

8.

Loosen set screws(21) in magnet assembly (4), lift shaft (7) and collar (3) up and out of bearing mount (2). Be sure to retain lower spacer (19)

C.

Insert a right-angle type of tool, such as an alien wrench into bearing, cock It slightly to one side and remove bearing. Remove both bearings. Clean bearing seats.

D.

Install new bearings. Be careful not to introduce dirt particles into bearings.

CLEAN HANDS ONLY! DO NOT ADD LUBRICATION OF ANY KIND.

E.

Reassemble the Sensor in reverse order. Be sure to Include spacers (19) over the bearings when replacing the shaft in the bearing mount. After the magnet assembly (4) has been tightened, a barely perceptible amount of endplay should be felt when the shaft is moved up and down (approximately.004 inch).

014A-9800 REV. 9/96 6

4. 7 014A Wind Speed Sensor Repair and Recalibration Service This service provided by the factory enables fast, economical service for the user.

This repair and calibration service includes disassembly and detailed electro-nic components. Service includes replacement of bearings regardless of apparent condition. Service also includes replacement of the following items.

A.

Shaft B.

All set screws.

Service also includes functional test of Sensor. Other components will be replaced as required. Additional charges for additional materials only will be added to the basic service charge.

Table 4 - 2 REPLACEABLE PARTS UST ITEM#

1 2 3.

4.

5 s*

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• 22 PART#

101685-2 101685-4 101685-7 101715 101812 101898 860001 101812-1 2844 510020 970062 860250 601250 601230

• Parts Included in 2402 Rebuild Kit 014A-9800 REV. 9/96 QESCRIPTION WSSUPPORT BEARING MOUNT OOLl.AA MAGNET flSSY CUP ASSEMBLY (ALUM)

BEARING SHAFT CUP ASSEMBLY, LEXAN SWITCH REED CNJ FOR CON'.JECTOB TERMINAL HH SMITH SPACER SET SCREW 4-40X 1/8 FLAT HD. 4-40X 1/4 SCREW 7

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0 Precipitation Gauges

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0 The accurate measurement of rain and snow precipitation remains one of the most basic elements of meteorology. To enable accurate measurement of precipitation in all environ-ments, Met One Instruments provides a series of instruments incorporating a tipping bucket mechanism. The tipping bucket design allows accurate, repeat-able measurements, requires no regular operator maintenance, and is economical and proven in operation.

Features n Jeweled bearings o Teflon coated bucket o Reed switch o Self emptying o Corrosion resistant materials o Quality construction Each model in the series is opti-mized to meet a particular site and sampling requirement.

Operation A dual-chambered t1pp1ng buck-et assembly is located below the collection funnel When a pre-cise amount of precipitation has been collected n one side of the bucket, gravity tips the assembly and activates a reed sw'tch. A momentary electrical contact closure through the switch is provided for each increment of rainfall. The sam-ple is discharged through the base of the gauge.

For environments that can typi-cally expect a significant amount of frozen precipitation, 'nternal sensor heaters are available.

The heating elements are ther-The Model 370 Raingauge mostatica ly contra led to melt and measure the water content of snow and frozen rain. but to avoid evaporative loss.

Construction The heavy machined aluminum base provides a stable plat-form for the tipping assembly.

The bucket Is made from stain-less steel and 1s Teflon coated to prevent retent on of the sam-ple. The bucket pivots are pre-cision machined and fitted with jeweled bearings to reduce wear and friction. The funnel is powder coated aluminum and has two screens for pre-venting leaves and other debris from entering or clog-ging the gauge. A circular bubble-level and adjustable feet facilitate proper mounting of the unit. Major compo-nents are finished in cat-alyzed polyurethane paint, with a color and texture cho-sen to allow the sensor to blend into the environment.

Met One Instruments, Inc.

C~rp.ora~e Sales & Service 1600 Washington Blvd, Grants Pass, OR 97526, Phone (541) 471-7111 Fax (541) 471-7116 D1stnbuhon & Service. 3206 Main Street. Suite 106, Rowlett. TX 75088. Phone (972) 412-4747 Fax,(972) 412-4716 http:l/www metone com P-labon Gougos - REV 11116194

Specifications Rain Gauges Model No.

Funnel Dia.

Standard Callb.

Optional Callb.

0 310 s*

372 8'

380 382 12' 12*

Rain & Snow Gauges Model No.

Funnel Dia.

375 a*

376 8'

3n 8'

379 a*

385 12" 386 12" 387 12' 389 12" 0.01" 0.2 mm or 0.25 mm 05 mm N/A 001' 01 mm Standard Calib.

0.01' 0.01' 0.5mm 0.5mm 0.01' 0.01' 0.1 mm 0.1 mm 0.2 mm or 0.25 mm N/A Optlonal Callb.

0.2 mm or 0.25 mm 0.2 mm or 0.25 mm N/A N/A 0.2 mm or 0.25 mm 0.2 mm or 0.25 mm N/A N/A Accuracy at 0.5'/hour

+/-0.5%

at 1" to 3'/hour

+/-1.0%

Switch Type Reed Rating 10 mA, 28 VDC Height Weight 8' Gauges 12* Gauges (not including cabling)

Shipping Weight (not including cabling) 18" (46 cm) 20.5' (52 cm) 8' Rain Gauges 12' Rain Gauges a* Rain & Snow Gauges 12* Rain & Snow Gauges a* Rain Gauges 12" Rain Gauges 8' Rain & Snow Gauges 12" Rain & Snow Gauges 6 lbs (2 7 kg) 7.5 lbs (3.4 kg) 6.5 lbs. (3 kg) 11.5 lbs. (5 2 kg) 8.5 lbs. (3.9 kg) 10 lbs. (4.5 kg) 9 lbs. (4 kg) 14 lbs (6.4 kg Heater Voltage 115 VAC 220VAC 115 VAC 220VAC 115 VAC 220 VAC 115 VAC 220 VAC Rnlsh White Gloss/Biege textured powder coat and clear anodized aluminum Cable Signal

1. 1566-xx Power (as req'd) #2517-xx (xx = length in feet)

Ordering Information Specify Model number. calibration factor, cable length(s), and accessories.

Accessories and Related Products Model 820440 Wind Screen. The improved Alter-design screen Is constructed of 32 free-swinging, separated leaves.

It can greatly improve the accuracy of the precipitation catch by reducing local turbulence.

Model 550500 Evaporation Gauge. This device measures the water level in a standard evaporation pan, and pro-vides an output proportional to that level.

Please contact Met One Instruments for additional information on these products.

Specifications subject to change.

0

)

0 Met One Instruments MODEL 375C 8" RAIN GAUGE OPERATION MANUAL Document No. 375-9801 1600 Washington Blvd.

Grants Pass, Oregon 97526 Telephone 503-471-7111 Facsimile 503-471-7116 Regional Sales & Service 3206 Main St., Suite 106 Rowlett, Texas 75088 Telephone 214-412-4747 Facsimile 214-412-4716

0 0

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MODEL 375C ELECTRIC RAIN/SNOW SENSOR OPERATION MANUAL 1.0 GENERAL INFORMATION 1

• 1 Model 375C Electric Heated Tipping Bucket Rain/Snow Gauge is an accurate, sensitive and low-maintenance sensor designed to measure rainfall on a continuous basis. Water does not collect in the sensor, but is drained each time an internal bucket fills with 0.01 inch of rainfall (standard calibration). At this time, a switch closure pulse is also sent to the translator module for counting. The sensor is calibrated prior to shipment and requires no adjustments after mounting.

1.2 Sensor Cable is a vinyl-jacketed 2-conductor shielded cable connecting to the sensor via an internal terminal strip. Cable length is designated in -xx feet on each cable part number label.

1.3 Power Cable is a vinyl-jacketed 3-conductor shielded cable connecting to the sensor heaters with wire nuts In an externally mounted J-Box. Cable length is designated In -

xx feet on each cable part number label.

375C 8194 Table 1-1 Model 375C Rainfall Sensor SoeciflC8tions Orifice Calibration (standard)

Calibration (options)

Accuracy Switch Type Mounting Dimensions Power Requirement Weight, less cables a* Diameter

.01* Rain per switch closure 0.2mm, 0.25mm

+/-1% at 1* to 3* per hour at 70° F Magnet & Reed 3 Pads for 114 bolts on 9*21/32* (9.66"}

circle diameter 17.314* high, a* diameter not including mounting pads 110VAC, 50/60 Hz, 315W 7.5 lbs/3.4 kg (10 lbs shipping w/cables)

Page 1

2.0 INSTAUATION

2. 1 Choose a site where the height of any nearby trees or other objects above the sensor is no more than about twice their distance from the sensor. (Sample: 50 ft tree at least 100' away from gauge). A uniform surrounding of objects (such as an orchard) is beneficial as a wind break. Nonuniform surroundings (such as a nearby building) creates turbulence which affects accuracy.

2.2 Mount the sensor lm£ll on a platform, using the built in level as an aid. The three legs can be adjusted for leveling. Three 114* diameter bolts are used to mount the sensor on a 9-21/32" (9.66") bolt circle.

2.3 Remove shipping restraint (This may be tape, rubber band, or similar item) from sensor bucket and verify that bucket moves freely and that all adjusting screws are tight.

2.4 Connect the signal cable lugs to the terminal strip if not connected already. See diagram.

Polarity is not important. See FIGURE 2*1.

2. 5 Connect the power cable to the leads Inside the condulet (see FIGURE 2-2) if not connected already.

2. 6 Replace cover on sensor, tightening screws at base.

NOTE: If snowfall is anticipated, remove primary screen from funnel.

2. 7 Route signal cable to the translator or datalogger and connecl Refer to the System Interconnect Diagram in your system manual for terminal Identification.

2. 8 Route the power cable to a 11 OVAC power source protected with a 15A GFI clrcuil Connect (Ref. FIGURE 2*2). This wiring must conform to local and state wiring codes.

If you are not familiar with these codes, an electrical contractor should be used.

Warning:

A* with any AC power wiring, Improper safety procedures can cause fatal Injuries.

If you are not quallfled to do this work, call an elactrlcal contractor to do It for you.

375C 8194 Page2

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0 375C 8194 BARBIER STAie SIGNAL CABLE AUACH SIGNAL CABLE LEADS TO SAME TERMINALS AS BEED SWITCH.

(POLARITY NOT IMPORTANT.)

FIGURE 2.-\\

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0 Page4

3. o OPERATlONAL CHECK-OUT 3.1 Manually actuate tip bucket mechanism (stop-to-stop) three (3) times. Confirm that 3 tips have registered on the recording equipment If not, refer to Troubleshooting Guide, Section 4-3.

4. a MAINTENANCE AND TAOUBl..ESHOOTJNG

4. 1 General Maintenance Schedule*:

At six month intervals, perform the following steps:

a.

Clean sensor funnel and buckets.

b.

Do NOT lubricate the pivots, as any lubricant may attract dust and dirt and cause wear of the jewel bearings.

c.

Verify that buckets move freely and that translator card or datalogger registers 0.01* or as calibrated for each bucket tip.

• eased on average to adverse environments.

4.2 Calibratjon. The sensor is factory calibrated; recalibration is not required unless damage has occurred or the adjustment screws have loosened. To check or recalibrate, perform the following steps:

a.

Check to be sure the sensor Is level.

b.

Wet the mechanism and tipping bucket assembly. Using a graduated cylinder, slowly pour the measured quantity of water through the Inner funnel to the tipping bucket, which should then tip. Repeat for the alternate bucket. If both buckets tip when filled with the measured quantity of water, the sensor Is properly calibrated. If they do not, recalibrate as follows:

1

• Release the lock nuts on the cup adjustments.

2.

Move the adjustment screws down to a position that would place the bucket far out of calibration.

3.

Allow the measured quantity of water to enter the bucket. {Refer to Table 4.1)

4.

Tum the cup adjustment screw up until the bucket assembly tips. Tighten the lock nut.

5.

Repeat steps 3 and 4 for the opposite bucket.

6.

Measure the quantity of water necessary to tip each bucket several times to ensure proper calibration.

7.

Replace the cover on the gauge.

375C MM Page 5

Table 4.1 Calibratjon Quantjtjes Tip Calibratjon 0.01 * (standard) 0.2mm 0.25mm Water Quantity 8.24 milliliters 6.49 milliliters 8.11 milliliters 4.3 IAOlB.ESHOOT1NG SVMPTOM pagw:u F CAUSE REMEDY No sensor output Faulty Reed Switch Replace Reed Switch Signal Cable Connection Check Connections Lightning Strike Replace Reed Switch & Diode Debris in Funnel Clean (See 4. 1)

Erroneous Reading Sensor not level Re-level Sensor out of Calibration Recalibrate (see 4.2)

Site too near trees or other objects Relocate (See 2.1)

Snow Not Melting Heaters not getting power Check circuit protector (customer provided)

Heater Failure Return unit to factory for repair.

Primary Screen Installed Remove Screen 375C 8194 Page&

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375C 8194 Page7

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I 375C 8194 Page9

4.4 REPLACEABLE PARTS LIST

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Model 375C Raja Gayge Parts List IJl..NQ.

Part No.

Descrjotjon 1

2545 Assembly, Tip Bucket (.01-,.2mm,.25mm) 2 2492 Pin, Pivot 3

340070 Barrier, Strip - 3 pos.

4 480210 Nut, Crown, Nylon #8-32 5

2598 Screen, Base 6

2503 Screen, Primary Top 7

480510 Clamp, Liquid-Tight 8

2934 Reed Switch Cartridge 9

2936 Adjustable Magnet Bracket 1 0 2937 Lightning Protection Diode 11 1566 Standard Cable Assembly 11 2745 Cable Assembly (for use with Automet) 12 2504 Screen, Secondary 13 2666 Assembly, Housing/Funnel 8" (115VAC) 14 2516 Foot 4.5 REPAIR AND RECALIBRATION SERVICE This service provided by Met One Instruments enables fast, economical service for the user. This repair and calibration service includes disassembly, inspection, cleaning,

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reassembly and calibration. Components will be replaced as required. Additional charges for additional materials only will be added to the basic service charge.

375C 8194 Page 10

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DESCRIPTION QTY 500102 I CONNECTOR,.C PIN, FEllALE j 1 400010 CABLE, 2 llRE. SHIELDED Al'R Dll0050 SLEEYINC. ll't". SHRINK VR 960060 I SLEEVING, 1/4". CLEAR SHRINK l.VR MET ONE INSTRUMENTS ASSY. CABLE. RAIN GAUGE 1511t IF!Ol10.

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0 Barometric Pressure Sensors Barometric Pressure Sensors convert absolute atmospheric pressure into a linear, proportion-al voltage, which may be used in any meteorological program.

Features

• Compact size

• Weatherproof enclosure

• Remote output

• Permanent calibration

• Robust construction These sensors are inherently stable devices that do not require periodic service or routine recalibration.

Operation The enclosure houses a solid-state pressure transducer, with linearization and amplification electronics.

The Model 0900 is housed in a heavy duty fiberglass enclosure, suitable for harsh and severe environments. A hose barb is provided to enable the connec-tion of a 1/4" sampling tube to the outside environment.

The Model 091 is contained within a small polycarbonate enclosure, and may be mount-ed outside or inside a building or other enclosure. Small inlet holes allow the atmospheric pressure access to the sensing element.

The standard range of the 0900/ 091 is 26-32 in. Hg,*

suitable for elevations sea level to 1500 ft. Other ranges are available.

0900 Specifications Performance Resolution Temp Operating Range Temp Compensated Range Accuracy Electrical Characteristics Power Requirement Sensor Output Physical Characteristics Weight, 0900 Dimensions, 0900 Weight, 091 Dimensions, 091 cm)

Ordering Information Cable 091 Infinite

-40°c to 55*c

-1a 0 c to 65°C

+/-0.04 in Hg (+/-1.35 mbar) or

+/-0.125% FS 11 mA @ 12 VDC, Typical 0-1 VDC Standard 0-5 VDC Optional 2 lbs 5 oz (1.05 Kg) 5.5" x 5" x 7.5" (14x12x19 cm) 8.8 oz. (250 g) 2.13" x 3.2" x 5" (5.4x8.3x13 Specify elevation Specify output voltage

1. 1169-xx (xx= length in feet)

Specify length in feet Specifications subject to change wlll1oul notice.

• convllfsions: 1 fn. Hg = 3.3864 kPa, 1 In. Hg = 33 864 mbar. 1 n. Hg.. 25 4 mm/Hg

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~~s!., 9.M~~oo !!l~~I~. ~~!1 ~~~52!. ~o~(;.1} 411-1111. '" (541} 471-7116 Distribution & Service: 3206 Main Street. Suite 106, Rowlett, TX 75088, Phone (972) 412*4747, Fax (972) 412-4716 http;J/www.melone com 09001091 - 7125197

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c Met One Instruments MODEL091 BAROMETRIC PRESSURE SENSOR OPERATION MANUAL Document No. 091-9800 1600 Washington Blvd.

Grants Pass, Oregon 97526 Telephone 541-471-7111 Facslm~e 541-471-7116 Regional Sales & Service 3206 Main St., Suite 106 Rowlett, Texas 75088 Telephone 972-412-4715 Facslmile 972-412-4716

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Barometric Pressure Sensor Model 091 Operation Manual 1.0 GENERAL INFORMATION 1.1 091 Barometric Pressure Sensor uses an active solid-state device to sense barometric pressure.

Self-contained electronics provide a regulated voltage to the solid state sensor and amplification for the signal output.

1.2 A 1169-XX' Sensor Cable ls a 4-conductor shielded, vinyl jacketed cable. Length is given in -XX feet on each cable part number label.

TABLE 1-1 Model 091 Pressyre Sensor Specifications Performance Calibrated Range Calibrated Operating Range Operating temperature range Resolution Accuracy Accuracy Output 26-32" (standard)*

-1 e 0 c to +50°c

-40°C to +50°C Infinite

+/-0.04 in Hg (+/-1.35 mb) or

+/-0.125% FS 0-1V DC (standard)*

"Refer to model number of sensor. Example: /w_- ~- \\

Electrical Characteristics Power Requirement Sensor Output Physical Characteristics Weight Dimensions 091-9800 6197 Basic Mod # Range ('Hg) Output Voltage (In this example, the sensor ou1put Is 0-1v lor a range ol 26 to 32" Hg) 11ma@12 voe 0-1 VDC Standard o-5 voe Optional 8.8 oz (250 g) 2.13" x 3.2" x 5" (5.4x8.3xl 3 cm)

2.0 INSTALLATION 2.1 Mounting the Sensor. Mount sensor in a convenient location with pressure Inlet port facing downward.

2. 2 Installing the Cable. The 1169 Cable Assembly contains four wires. Install the cable into the water-tight gland and connect cable as follows:

SIG = Signal Output (Wht)

COM = Signal Common (Grn)

+12 = +12V Power (Red}

COM = Power Com (Blk) 3.0 OPERATION

3. 1 The Barometric Pressure Sensor has been calibrated at the factory, and will not change unless it is damaged. To check for proper operation of the sensor and module, it is advised that the module's output be checked against a local weather service facility.

Exact correlation Is not to be expected, due to geographical and meteorological variations. The sensor reads absolute barometric pressure, whereas local weather services readings are normalized to sea level values.

3.2 One should keep in mind that nominal pressure, at sea level, is 30 inches of mercury and that for every 1,000 feet of elevation, the pressure decreases approximately one Q

Inch of mercury. EXAMPLE: A weather station at sea level may use a barometer with a range of 26 to 32 inches of mercury to cover all possible weather conditions. However, a weather station, located 4,000 above sea level, would require a range of 22 to 28 inches of mercury.

091-9800 6197 MODEL 091 BAROMETRIC PRESSURE SENSOR BANGE SEl..ECDON GVIDE 0

to 1,500 1,501 to 3,500 3,501 to 5,500 5,501 to 8,000 8,001 to 10,000 10,001 to 12,500 12,501 to 15,500 15,501 to 19,000 RANGE ("Hgl 26/32 24/30 22/28 20/26 18/24 16/22 14/20 12/18

)

3. 3 Each sensor is provided with a calibration data sheet showing transducer outputs at two or more pressure levels. It is important to record these values, as they are required, should it ever be necessary to recalibrate the pressure translator module in the field. If these values are lost, the sensor can be returned to the factory for recalibration.

4. O MAINTENANCE AND TROUBLESHOOTING

4. 1 General Maintenance Schedule.

A Inspect pressure inlet port occasionally to insure it is free of obstruction. No other periodic maintenance or callbratlon is required.

8.

inspect sensor for proper operation per Section 3.1.

4. 2 091 Pressure Sensor Majntenance. The pressure sensor is an inherently stable device that does not require periodic service or recalibration. Should service or recalibration become necessary, the sensor must be returned to the factory. Always inspect Model 091 Pressure Sensor to make sure that inlet port is clean and free from obstructions.

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GROUND ROD FIGURE #1 Tower Lightning Rod and Grounding System

1)

2)

3)

4)

5)

6)

7)

Parts List Sectional lightning rod (TL 5855)

Air Terminal { 665)

Clamp {802)

Copper Cable (505)

Ground Clamp {493U a ft Ground Rod (TL588)

Copper ground wire from translator or data logger ground connection 0

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APPLICATION NO. ZS, 45, If 55 TOWERS WITH FLAT BASE

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Relative Humidity Sensor The Model 083C sensor probe represents sensitivity, accura-cy, linearity and stability not encountered with conventional relative humidity sensors. It is extremely well suited for mete-orological, industrial, laborato-ry and other demanding appli-cations.

Features All solid state construction Fast response of less than five seconds Low power consumption of 4 ma at 12 voe Easily cleaned using distilled water 0-1 V output for 0-100% RH Will operate from a 12 VDC battery The model 083C RH sensor can also be supplied with a Temperature Sensor mounted in it and used with various radi-ation shields for reliable, accu-rate measurements.

Operation The model 083C Relative Humidity Sensor is based upon the capacitance change of a polymer thin film capaci-tor. A one-micron thick dielec-tric polymer layer absorbs water molecules through a thin metal electrode and causes capacitance change propor-tional to relative humidity. The thin polymer layer reacts very fast, and therefore, the response time is very short-less than five seconds to 90%

of the final value of relative humidity. The sensor responds to the full range from 0-100%

relative humidity. Its response The Model 083C Relative Humidity Sensor is extremely well suited for meteorological, industrial, laboratory and other demanding applications.

is essentially linear, with small hysteresis, and negligible tem-perature dependence.

perature compensation is not required for most applications.

The probe body is water tight and made from corrosion resistant aluminum. Immersion in water does not affect the calibration of the sensor.

Construction The sensor is mounted in a small probe which contains all the electronics necessary to provide an output for indicat-ing or recording humidity.

Since the capacitance change of the sensor is sensitive only to the ambient humidity, tern-The polymer material is resis-tant to most chemicals.

The calibration of the sensor is not affected by liquid.

Specifications Sensing Element:

Range:

Temperature Range:

Response Time:

Accuracy:

Temperature Coefficient:

Output:

Input Power:

Dimensions:

Weight:

Thin film capacitor 0-100% Relative Humidity

-20°c to +60°C Less than 15 seconds at 68°F of Final (with filter) 0-10%

+/-3%

10-90%

+/-2%

90-100%

+/-3%

0.04% RHl°C 0-1.00 VDC - Standard 4 MA at 12 VDC Battery Diameter 0.75" Length 7.5" 2.5 oz.

Subject lo change without notice.

Met One Instruments, Inc.

Corporate Sales & Service: 1600 Washington Blvd

• Grants Pass. OR 97526, Phone (541) 471-7111. Fax (541) 471-7116 Distribution & Service: 3206 Main Street, Suite 106. Rowlett. TX 75088. Phone (972) 412-4747 Fax (972) 412-4716 http*f/www.metone.com 083C REV 1217193

Ordering Information 083C-X-V

-0

-1 Temperature Sensor not included

-50 to +50"C, 060 type Temperature Sensor included

- 1 With connector for direct use with Model 071 Vane Radiation Shield

- 35 With connector for direct use with Model 0738 Radiation Shield or

-6 Model 0758 Solar Powered Radiation Shield With 6" Signal Cable for direct use with Model 0768 Motor Aspirated Radiation Shield

()

(

0 Met One Instruments MODEL083C RELATIVE HUMIDITYITEMPERATURE SENSOR OPERATION MANUAL 1600 Washington Blvd.

Grants Pass, Oregon 97526 Telephone 541-471-7111 Facsimile 541-471-7116 Regional Sales & Service 3206 Main St., Suite 106 Rowlett, Texas 75088 Telephone 972-412-4715 Facsimile 972-412-4716

0 0

0 083C RELATIVE HUMIDllYITEMPERATURE SENSOR OPERATION MANUAL 1.0 GENERAL INFORMATION

1. 1 The 083C Sensor contains an extremely accurate and sensitive relative humidity sensor which responds to the full range of 0*100% humidity. Response is linear with small hysteresis and negligible temperature dependence. The sensor is designed to be housed in a radiation shield when used outdoors. Certain models also contain a high-accuracy linearized air temperature sensor, permitting simultaneous measurement of relative humidity and temperature.

1.2 The 083C Sensor model number describes the sensor options as follows:

083C

• X

• Y Xis the temperature option:

0 = no temperature sensor 1 = -50 to +50°C temperature sensor Other temperature options are available.

Y is the radiation shield compatibility option:

Radiation Shield Signal Cable

- 1

- 6 071 076 077 0738 0758 1 8 7 3 -ZZ (ZZ = cable length in feet) 2144-ZZ

• 6 2408-ZZ

-3 5 2348-ZZ

-3 5 2348-ZZ 1.3 The Sensor Cable is vinyl-jacketed and shielded. Cable length is given in feet on each cable part number. The cable part number depends on which radiation shield the sensor is mounted in. The 077 Radiation Shield has a screw type terminal strip to accept wire leads from the 2408 cable. All other Radiation Shields and cables have Mil Spec screw-on or twist-on cable connectors.

The 083C*X-6 sensor mounts in either a 0768 Radiation Shield, with a 2144*ZZ signal cable or a 077 Radiation Shield with a 2408-ZZ signal cable.

083C*9800 1 0/94 Page 1

Table 1.1 Model 083C Relative Humidity Sensor Specifications Sensing Element Range Temperature Range Response Time Accuracy Hysteresis Temperature Coefficient Output Input Power Thin*film capacitor 0*100% RH 15 seconds at 68°F 90% of final RH value Better than +/-3% between 1 Oo/o and 90%

For 0% to 100% to 0% excursion less than

+/-1 o/o

+/-0.04% per, °C O

• 1V at tun scale (standard}

12V DC +/- 2V, 12 ma Table 1.2 Model 083C*1 AH/Temp Sensor Specifications Range

.50° to +50°C {standard range)

Linearity

+/-0.15°C Accuracy Time Constant 10 sec.

2.0 INSTALLATION 2.1 If sensor comes mounted in a radiation shield, refer to radiation shield manual section for mounting details. Sensors not furnished in a radiation shield should be mounted In a representative location having good air flow and shaded from sunlight or other heat radiation sources that would affect measurement of relative humidity or temperature.

083C-9800 10/94 Page2 0

0

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0 MODEL OJ6B MODE.L 07.l-MODEL 0]3B IYPlCAL 083C SENSOR \\NSTALLAT1~6 lN 5rANDARD RADJATIO~ 5~\\ELD6 083C*9800 1 Q.194 Page3

3.0 OPERATIONAL CHECK-OUT AND CALIBRATION 3.1 Relatjve Humjdjty Measyrement 3.2 Relative Humidity Sensor Check-out

1.

To verify correct wiring and as a rough test of sensor operation, blow on the sensor. The relative humidity will rise to a higher level.

2.

The Relative Humidity Sensor has been calibrated at the factory and will not change unless it is damaged. To check for proper operation of the sensor it is advised that the output signal be checked against a local weather service facility. Exact correlation is not to be expected due to atmospheric and geographical variations.

3.3 Temperature Sensor

1.

Compare actual readings with precision mercury thermometer. As an alternative, measure sensor resistance with a Lo Current Digital Ohm Meter and compare readings of temperature vs resistance. See Table 3.1.

4.0 MAINTENANCE AND TROUBLE SHOOTING 4. 1 General Maintenance Schedule*

6 - 12 Month Intervals:

A.

Inspect sensors for proper operation per Section 3.0.

B.

Clean Relative Humidity sensor element per Section 4.2A.

• schedule is based on average to adyerse environments.

4.2 083 Relative Humjdjtv Sensor Maintenance and Calibration Warning:

The sensor can be miscalibrated or permanently damaged through improper acts. Do not attempt a repair or calibration if you are unsure of the procedure. Do not touch if you do not know how.

083C-9800 i 0/94 This instrument should operate for an extended period of time with a minimum of care or maintenance.

If parts or maintenance assistance are required, contact Met One Instruments. Obtain shipping instructions before returning any unit.

Page4 0

0

)

0 0

A.

Maintenance Cleanjng the Sensor Element. Unscrew the filter. Dust and other particles may be removed by gently blowing on the sensor chip. DO NOT USE COMPRESSED AIR.

After dusting, the sensor element may be wiped clean with a soft brush dipped in distilled water. po NOT USE DETERGENTS. DO NOT APPLY POWER TO THE SENSOR WHEN CLEANING, and do not reconnect power to the sensor until the element has dried.

CAUTION: NEVER TOUCH THE SENSOR CHIP WITH BARE HANDS

1.

2.

3.

The life of the sensor is related to the environment in which it operates.

In a pure air and water vapor surrounding, the sensor element will have an indefinite life. The presence of chemical pollutants in the environment may corrode the materials of the sensor chip. The polymer material is resistant to most chemical attacks, but the metal electrodes, are sensitive to corrosion effects, particularly when a DC voltage is applied to the sensor. The most harmful pollutant has been sulphur dioxide absorption in small soot particles. When such particles fall on the thin metal electrode, they may, if water condensation is present, form traces of sulphuric acid to corrode the surface of the sensor. For these reasons, a careful cleaning as described in the preceding paragraph is recommended whenever the sensor has been exposed to corrosive pollutants. Also, a periodic cleaning every two weeks with an atomizer of distilled water, thoroughly washing the chip clean, may remove harmful particles before they can damage the sensor. Be sure that no power is applied when washing the chip and that power remains off until after the chip has dried.

Replacement of Sensor Element. If the sensor element has been damaged, it can be easily replaced. Disconnect power to the probe. Unscrew the filter.

Un~solder the old chip and solder a new one in its place. The sensor chip is very delicate, so observe the following precautions. JlQ...

NOT TOUCH THE CHIP WITH BABE HANDS. Handle the chip only by gripping its lead with pliers. When soldering, hold the lead with the pliers to prevent the heat from the soldering operation from damaging the chip. Do not bump the chip when reinstating the protective grid.

After replacement of the sensor element, the humidity probe must be recalibrated.

OB3C9BOO 10/94 Page5

8.

Humjditv Probe Calibration.

1

• Before attempting to recalibrate the probe, make sure that the translator module containing the signal conditioning electronics is still properly calibrated.

If 0% and 100% do not produce corresponding readings on the indicator, recalibrate the translator module.

2.

The calibration method described in this instruction manual Is based on the constant water vapor pressure over saturated salt solutions and constant temperature. Materials used for the calibration are Lithium Chloride {UCI) and Sodium Chloride (NaCl). The former creates a humidity of approximately 13% and the latter approximately 76% in 68°F {20°C) ambient temperature. Both of these chemical agents are available from chemical suppliers. To guarantee accurate calibration, the salts must be of high purity.

TEST EQUIPMENT REQUIRED:

2 Calibration Bottles:

HM*111*CG*L and HM-111-CB-N Lithium Chloride Salts, Reagent Grade 1 Sodium Chloride, Reagent Grade 1 Thermometer to measure ambient temperature Distilled water

3.

Preparations for Calibratjon Refer to instructions with the calibration bottles for mixing the solutions.

The calibration bottles can be used for up to one year without changing fresh chemicals. The bottles should be stored in a place with constant temperature, so as to have them ready for use with just a short preparation time. Do not shake the bottle with salt solution before use. Care should be taken to see that there are no droplets of salt solution inside the mouth piece of the bottle. This might affect the accuracy of the calibration. Do not get any salt solution on the sensor element directly.

083C-9BOO 10/94 Pages 0

0

0 0

)

TABLE 4-1 Calibration Tables LITHIUM CHLORIDE Ambient Temperature 0c 10 15 20 25 30 35 40 Calibration Value % RH 14.3 13.8 13.4 13.0 12.8 12.7 12.6 SODIUM CHLORIDE Ambient Temperature °C 1 0 15 20 25 30 35 40 Calibration Value o/o RH 75.2 75.3 75.5 75.8 75.6 75.5 75.4 C.

CALIBRATION FOR LOW HUMIDITY (13% RH)

1.

Unscrew the filter. Do not bump the sensor element while removing the grid.

2.

Pull the rubber plug out of the lithium chloride (LiCI) bottle, and push the sensor probe in its place in the cork's sleeve. The sleeve is fitted with a safety flange and prohibits the probe from falling through.

3.

Read the ambient room temperature.

4.

Note the humidity percentage from the lithium chloride calibration table, which corresponds to the temperature in question.

5.

After 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, read the humidity value, If the reading differs from the table value, adjust 815, zero adjust.

6.

After use, close the bottle tightly with the rubber plug.

D.

CALIBRATION FOR HIGH HUMIDITY (76%)

Repeat the calibration procedure as described above, but now using the sodium chloride. Adjust R18 (span adjustment) if necessary.

E.

Repeat steps C and D until no further adjustments are required.

OB3C-9BOO 10/94 Page7

MODEL 510070 RELATIVE HUMIDITY CALIBRATOR 1.0 GENERAL INFORMATION 1

• 1 Suitable for all probes. Calibration by means of lithium chloride and sodium chloride saturated salt solutions. Bottles for salt solutions in metal box providing stable temperature. Due to the minimal space of air above the salt solution no ventilation is needed. Solid construction. Humidity and Temperature scale for each salt solution printed on the box lid. A thermometer situated between the salt bottles in the box provides a very reliable calibration.

083C-9800 10/94 figure 5 Calibrator before setting up Pages

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RESISTANCE TABLI: 3.1

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MODELS 060A-4,063-2

~~.c BHQl:t*

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ll1:2 11E.G.c BNOM*

BCAL 0

2768.230 20516.330 50 1912.480 4753.275 1

2751.115 19612.079 51 1895.365 4648.939

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2734.goo 18774.249 52 1910.250 4547.30§ 2716. 85 17995.782 53 1 61.135 4448.26 4

2~~~.770 1121g.~e4 54 1844.g20 4~~,.734 5

2

• 655 1659

• 68 55 1826. 05 4

.605 6

266i.540 15j59.526 56 lag~.1~0 4665.794 7

264.425 15 65.018 57 17

• 6 5 4 76.216 8

2631. 310 14aHg.29s 58 177~.56g 3§88.790 9

2614.195 142

.220 59 175.44 3 03.440 10

~5.,7.080 1~784.011 60 1741.~30 3~20.094 11 5 9. 965 1 315.197 61 1724. 15 3 38.680 i~

~~62.8~0 1~871.569 62 i1g1.100

~E~i:~§5 45.7 5 1 451.151 63 16 9.985 14 2~2e.g20 12052.667 64 lg1~.01g sg5.3~~

15 2 11. 05 11673. 20 65 1 ~.75 34 1.0 16 2494.~90 16§~2.266 66 12 8.640 j~~~:~~~

17 2477. 75 1

8.598 67 1

1.525 l~

246g.560 10~49.930 68 16g4.410 j~l§:ga5 244

• 45 10 2

• 85 69 15 7.295

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24~~-330 10028.778 70 1570.180

~082.902 24

• 15 9742.611 71 1553.065 017.610 22 23~1.700

§46~-~64 72 1~3~.950 2953.661 23 23 4.585 20

• 81 73 1 1. 835 2891.014 24

~~57.47g 8953.870 74 15g1.120

~829.630 25 40.35 711.894 75 14 4.605 769.471 26 2323.240 8479.365 76 1467. 490 2110.sog

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27 2306.125 8255.74 77 1450.375 2652.68 28 2289.010 8040.~19 78 1433.260

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29 2271. 895 78~3. 34 79 1416.145 30 2254.780 76 3.457 80 1~99.230

~:~~:3~8 31 2237.665 7440.785 81 1 81. 15

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2220.550 72~4.847 82 1~64.ego 2~7~.773 2203.435 70 5.296 83 1 47.6 5 2 2

• 217 34 2106.~go 6101.go1 84 1~3~.51g

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35 2169.

5 6 34. BO 85 1 1. 45

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2132.090 6571.832 86 12~~-340

~179.112 21 4.975 6414.798 87 12

.225 131.1 1 38 2117.860 6262.731 88 1262.110

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~083.630 5§72.506 90 1227.880 1~

066.515 5 ~4. 85 91 1210.765 1947.708 204f.4ft0

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112~.190 17~5.392 47 1963.825 5 8

• 617 110.075 16 5.013 48 1946.710 4B7g.4~5 98 1090.B60 lg55.290 49 1929.595 4 6

• 4 2 99 1073. 45 1 16.206 50 1912.480 475.275 100 1056.730 1577.746

• VALUE WITH A 3200 OHM RESISTOR IN PARALLEL WITH THE SENSOR RANGE 0 TO 100 DEGREE C THERMISTOR BEAD 44201 RNOM = (-17.115)T+2768.23 WHERE T = TEMPERATURE IN DEGREE CENTIGRADE

RESJ:STANCZ TABLJ: 3.1 MODELS 060A-4,063-2 nMf ~

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BNOM*

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32 2768.224 20516.001 84 2273.808 33 2758.716 20005.011 85 2264.300 34 2749.208 19515.576 86 2254.792

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19046.361 87 224~.284 27

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2720.684 18163.777 89 2226.268 2711.176 17748.235 90 2216.760 39 270~.6~8 17348.~~o 91 2231.252 40 269.1 0 16963.

1 92 21 7.744 41

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2150.204 46 2635.112 149 7.487 2140.696 47 2625.604 14627.422 99 2131.g88 48 2616.096 14337.129 100 2121. 80

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54 2559.04 12776.2 5 106 2 64.63 55 2549.54~

12542.705 107 2055.124 56 2540.03 12315.904 108 2045.616 57 2530.524 i2g~5.545

. 109 2036.108 58 2521.016 11 1.357 110 2026.600 59 2511.588 11673.085 11~

2017.092 60 2502.0 11470.487 11 2007.584

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24§2.492 11273.335 113 1998.076 24 2.984 11081.411 114 1988.568 63 2473.47g 10894.510 115 1979.060 64 2463.96 10712. 439.

116 1969.552 65

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1033~.0ll 117 1960.044 66 444.95 10 6

• 052

• 118 1950.536

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1931.5 0 69 241~.428

~868.359 121 1922.012 70 240

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~~97.412 9558.726 123 1902.996 72 87.904 9409.347 124 1893.4~8 73 2~78.396 9263.42~

1~5 1883.9 0 74 2 68.888 9120.84 1 6 1874.4 2 75 2359.380 8981.485 127 1864.964 76 2349.872 8845.245 128 1855.456 77

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128 1845.948 78 330. 5 5 1.7 7 13 1836.440 79

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8454.216 1~1 1826.932.

80 8~29.454 1 2 1817.424 H~

~ g~:i~4 H 21.335 1~3 10g1.9A~

0 7.777 1 4 17 8.4 83 2283.316 7970.698 135 1788.900

• VALUE WITH A 3200 OHM RESISTOR IN PARALLEL WITH THE SENSOR RANGE 32 TO 212 DEGREE FARENHEIT THERMISTOR BEAD 44201

~

7856.023 7743.679 7633.594 7525.7g~

7419.9

• 7~16.24~

7 14.54 7114.803 7016.951

~§20.937 26.712 6734.2~~

6643.4 6554.276 6466. 725 6380.731 6296.253 6213.t~3 6131.

1 6gs1.~~o 5 72.

4 589~.269 581.102 5744.200 5670.532 55~8.067 55 6.777 54ij6.633 53 7.607 5319.673 5252.806 5186.981 5122.172 5058.358 4995.514 4~33.620 4 72.654 4812.59~

4753.42 46j5.110 46 7.6 2 45~1.037 45 5.223 4470.205 4415.965 4362.4g7 4309.7 4 4257.752 4206.464 4155.879 4105.97 4056.750 RNOM = (-9.508)T+3072.48 WHERE T ~ TEMPERATURE IN DEGREE FARENHEIT

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RESISTANCE TABLE 3.1 MODELS 060A-4,063-2 lll:lf. ~

[. BHCM*

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m:£ !ml[. RNOM*

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136 1779.392 4008.181 178 1380.056 2426.547 137 17~8-~84 396~*§5ff 11g 1370.548

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• 76 391

• 6 18 1361.040 138 1750.~~8

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~774.774 1 3 1~32.513 2283.!13 14 17 2.344 729.894 184 1 23.00 2255. 37 143 l~6~:~~B

~~85.~89 195 1313.500

~228.0~l 144

41. 46 1 6 1303.992 200.8 1 145 16fi3-~29 3~~t88B lB~

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~173.872 146 16 4. 1 1

4.9 6 147.191 147 1614.aoa

~513.891 189 1275.4~8

~520.113 148 1665.29 472.296 190 1265.9 0 94.61 149 1655.190 3431.214 l~l 1256.452 286~.7g5 150 1646.2 0 3390.634 1 2 1246.944 2 4.o 5 151 16~6. 772

~~58.548 193 1~37.43B 2017.664 152 16 7.264 1

• 947 194 l 27.92 1992.sBe 153 1617.756 3271.821 195 i~ 0 9.420 1§67.5 4 154 1608.248 3233.163.

196 1

.912 1 42.917 155 15§8.740

~r§i:~fa 197 lla9.404 1918.475 156 15 9.232 198 11 9.896 1894.264 1~7 1~1g.124 311j.911

~99 1180.398 1870.281 1 8 1 7

• 216 308.041 00 1170.8 1846.523 158 1560.708

~846.599

. 201 ll61.a12 1~22.9ag 16 1551.200 10.577 202 1151. 64 1 99.66 161 1g4~.692 2§j4-~69

~03 ll~~*fi56 1776.56~

162 l 3.184 2

9. 66 04 11

• 48 1753. 67 163 1~2~.67g

~~04. 962

~OS 112~*i40 1730.9~5 0

164 1 l.16 70.551 06 111

• 32 1708.5 1 165 1503.660 2~36.526 2g1 1104.324 1686.2i2 166 1494.152 2 02.880 2 8 1094.816 1664.1 3 167 1484.644 2 69. 606 208 1085.308 1~42.3~~

168 1475.136 2736.700 21 1075.800 1 ~0.6 169 1465.628 2704.154 21~

186~.292 15 9.157 170 1456.120 2671.964 21 1 5

• 784 1577.867 171 1446.662 2640.122 172 1437.1 4 2608.624 173 1421.8a6

~g~i:a~a 174 1418.

8 175 14oe.ge~

251g.1~6 176 1399. 7 248.9 7 177 1389.564 2456.096

• VALUE WITH A 3200 OHM RESISTOR IN PARALLEL WITH THE SENSOR RANGE 32 TO 212 DEGREE FARENHEIT THERMISTOR BEAD 44201 RNOM = (-9.508)T+3072.48 WHERE T =TEMPERATURE IN DEGREE FARENHEIT

TABLE 3.1b MODELS 06DA-2, 063-1, 064-2

~~~

BtlQM*

~

lll:2 0£.G. c.

BNOM*

~ 0

-so 20156.450 1sa101.ao6

~

1~569.137

~2887.53~

-49 20027.287 150560. 66 1 439.974 2138.9

-48 19899.124 143555.423 3

13310.81~

31410.~34

-47 1976.961 137093.261 4

13181. 64 30700. 68

-4g f~~t8:l~~

13l~g3.s4g i

130~~-48~

J3ooe.6~a

-4 125 4.17 12 9

• 32 2 334.S

-44 19~~~-47~ 1204gg.331 7

127 94.1§9 28677.434

-43 19

.30 1155

.174 8

12664.9 6 28036.~40

-42 1§§2j.146 111019.926 18 1~5~5.83~

~1411. AS

-41 1

9

• 983 10685.059 1 4 6. 67 6801.

-40 188~4-~20 10§894.645 11 12277.507 262~S.6j§

-39 187 s. 57 9 165.826 12 12148.344 256 4.1

-~8 18606.4j4 95651.~71 13 12219.181 25056.188

- 7 18477.3 1 92333. 14 14 11 90.018 24501.325

-~6 1834~.168 891~5.637 15 11760.855 2~959.lg4

- 5 1821

• 005 862 4.021 16 11631. 692 2 429.0 I

-~4 1~089.84~

83405.623 17 11502.~29 22910.8~

3 1 9~0.67 80728.891 18 11373. 66 22404.1

-32 178 1.516 781~3.405 19 11244.203

~19~8-~63

-31 177 2.353 757 9.744 20 11115.040 14 3. 0

~g 17573.1~~

73449.368 21 10985.877 2394~.s91 17444.0 71244.51 22 10856.714 2 48.8 8

-2~

17314.884 69138.103

. 23 18727.~51 2002~-~~l

-2 17185.7 1 67123.71 24 l 598. 88 1958

• 6

-~6 170~6-~38 65195.417 25 1046g.225 19146.8~4

- 5 169 7. 75 63347.824 26 1034.062 18719.l 9

-24 16798.212 61575.968 27 10210.899 18~00.0jS

-23 16669.049 59875.286 28 10081.736 17 89.3 6

-22 16539.886 58241.574 29 9952.573 17486.649 )

-21 16410.723 56670.953 30 9823.410 17091.796

-20 16281.560 55159.837 31 9694.247 16704.55~

-19 16152.397 53704.907 32 9565.084 16324.70

-18 160§3.g34 52303.087 33 9435.921 15952.028

-17 158 4. 71 50951.521 34 9306.758 15586.336

-16 1~7~4.908 49647.554 35 9177.595 15227.430

-15 1 6 5.745 48388.715 36 9048.432 14875.121

-14 15506.582 47172.702 37 8919.269 14529.231

-13 15377.419 45997.365 38 8790.106 14189.584

-12 1s243.2ss 44860.69~

~8 0g~o.946 lj8S~.015

-11 1511.093 43760.82 8

1. 78 1 52. 36

-~B 14989.~30 42695.980 41 8402.617 13206.46a 14860. 67 41664.524 42 8273.454 12890.17

-8 147dl.604 40664.9ge 43 8143.2~1 1251J*~5~

-7 146 2.441 39695.6 1 44 801

• l 8.

1227. 5

-6 14473.278

~8153.411 45 7885.965 1197~.536

-s 14344.115 784

• 011 46 7756.802 1167.278

-4 14214.9~2 3~957.076 47 7627.639 11387.94B

-3 14085.7 9 3 096.529 48 7498.476 11102.42

-2 13956.626 35260.295

~8 7369.313 10821. 59~

-1 13827.463 34447.357 7240.150 10545.33 0

13698.300 33656.757

• VALUE WITH 23.lK RESISTOR IN PARALLEL WITH SENSOR RANGE -so TO +soc ~R -58 TO +122F THERMISTOR BEAD 44 12 RNOM=(-129.163)T + 13698.3 WHERE T =TEMPERATURE IN DEGREE.CENTEGRADE For RCAL:

Where:

Tc = Temp (deg C Tc= ((((R+ -1) + (23100-1)) 13698.3)/-129.163 RT = RCAL Rt* ((((-129.163Tc) + 13698.3)-1) - (23100)-1)-1

TABLZ 3.lB MODELS 060A-2, 063-1, 064-2

~

tWi f:

BtlQM*

~

llM1?. om E.

RNOM*

~

-58 20156.~06 1~8178.3,6 15§~2.743 50247.~45

-57 20084. 49 1 3864.4 3 15 0.986 5 511. 90

-~6 2gg12.e~2 14§7~1. 0§6 3

1~779.229 49789.864 5

1 41.1 i 14 8 4.5 8 4

1 707.472 49082.344

-~4 1~869.37 142072.~27 5

1563~.715 48388.4~8 3

1 797. 621 138483. 13 6

1556.958 47707.7 6

-52 1~12s.0g~

1~5047.152 7

1~4~2.201 47g~9.86i

-51 1 654.1 1 1753.909 8

1 4 0.444 46 4.48

-5g l~!~g:~§g 1~~~~~:~~3 16 l~~~~:~~6 mauai

-4

-4~

l§~~~:8~f 12264~.729 11 1s2g3.113 44499*8~

-4 11984.038 12 151

.416 438 1.

-4g l~~~~:~t5 111!51.g20 13 1sg6~.6S~

43283.1~1

-4 114 54. 30 14 14 8

• 90 42695.7 2

-44 19iji1.0ga 11205~.002 l~

14~18.j4§ 42130.1g1

-4~

19 o.o 1 10964.490 14 46. 0 415 1.6 4

~4 l!3g~:~34 lg1g12.~96 17 14774.631 4099i.4s~

-41 l 5 64. 43 18 14702.874 4044.74

-4g 18864.780 i8~9§i:~~~

~8 14g~l.117

~9j08.309

-3 18793.~23 14 9.360 9 78.924 T

lft12§. 66 9876§.9jl

~~

14487.603 390s0.36a 7

1 64.509 9671.1 0 14415.846 3 346.40

~

19s11.1§2

§48 6.625 23 14~44.g~~

~784~.83A 1 505.9 5 30 3.552 24 14 72.

734.44

-34 18434.2j8 A1261.§11

~~

14200.57i 3~363.054

-33 18362.4 1 9534. 04 14128.81 3

0.456

-32 1829g.7t4 87~~4.331 27 14g~1.031 3590~.47~

-31 1821.9 7 86 3.170 28 13 5.3 4 3544.91

-30 18147.210 84639.274 29 13913.547 34986.620

-29 18075.453 83100.619 30 13841. 790 34536.411

-28 1~003.~j6 81605.292 j~

13770.933 34093.128

-27 1 931.

9 80151.490 13698. 76 33656.612

-26 17860.1~2 78737.5~7 33 13~~6.519 3~226.708

-25 17788.4 5 77361.7 7 34 13 4.762 3 803.268

-24 17716.668 76022.625

~~

13483.~05 32§8~.147

-23 17644.911 74718.752 13411. 48 31 7.205

-22 17573.j§4 7~448.'7~7 37 i~~~;:~jl

~1570.~05

-21 17501.

7 7 211.2 7 38 1171. 14

-20 1742,.~4g 11g~§-136 39 13195.~77 30773.106

-19 1735

• 8 69

.141 40 13124. 20 3039.554

-18 17286.j~~

6868~.17~

41 138~2.463 30008.533

-17 17214.

6756.17.

42 12 0.706 29631. 94

-lg 17142.s!~

~~i6g:o~~

43 1~938.94~

2§260.64~

-1 17070.

44 1 8 7.19 2 894.54

-14 16999.g9a

~4~64.11B 45 1276~.435 28533.52~

-13 16927. 41 3 47.34 46 1269

• 678 28177.48

-12 16855.584 62353.948 47 12621. 921. 27826. 32~

-11 16783.827 61383.120 48 12550.164 27479.93

-!g 1~712.g1g Eo454.103 49 12478.4g7 27138.227 1 640. 1 95 6.170 50 12406.6 0 26801.107

-8 1~568.~56

~8~98.a26

~~

12334.893 26468.481

-7 1 496. 99 7 10. 07 12263.136 26140.260

g 1~42~-~4~

i6~42.01g

~~

1~1 1 1. ~79 25816.3~7 1 35

• 8 5 91.82 1 1 9. 22 25496.6 8

-4 16~8~.528 5j59.469

~~

12047.865 25181.1~9

-3 16 0.771 54 44.451 11976.108 24869.7 1

-2 16138.014 53546.233 57 11~04.~Sl 24~62.266

-1 16066.257 52764.302 58 11 32. 94 24 58.727 0

15994.500 51998.163 59 11760.837 23959.029

• VALUE WITH A 23.lK RESISTOR IN PARALLEL WITH SENSOR

~ 1E * -58 TO +122 DEGREE FARENHEIT*

\\.-~ 4{MISTO~ B~AD = 44212 RNOM = (-

1. 57 ) T +15994. 5 WHERE T = TEMPERATURE IN DEGREE FARENHEIT

'l'ABLE 3. lB MODELS 060A-2. 063-1. 061'-2

w:ie. ~

f.

RNOM*

RC.AL lll:2 om r.

EY:IQM*

60 11689.g8g

~3663.101 181 8747.043 61 11617. 2 3370.871 1 2 8675.286 62 11545.56~

23082.271 103 8603.529 63 11473.80 22797.233 104 8531.772 gg 114g2.~~2 22~~~-693 105 8460.~15 113 o.

5 22

.585 106 8388. 58 66 11258.538 21962.848 107 8316.501 67 11186.781 21691.420 108 8244.744 68 11115.~24 21423.243 108 8172.~87 69 11043. 67 21158.258 11 8101. 30 70 10971.510

~0896.408 111 8029.473 71 10899.753 0637.639 112 7957.716 72 10827.~96 203~1.8~6 113

~a~~:~ij~

73 10756. 39 201 9.1 6 114 74 10684.4~2 19879.278 115 7742.445 75 10612.7 5 19632.301 116 7670.688 76 10540.~68 19388.147 117 7598.931 77 10469. ll 19146.767 118 7527.174 78 10~~7.454 18908.114 119 7455.417 79 10 5.697 18672.142 120 7383.660 80 10253.940 18438.806 121 7311.903 81 10182.183 18208.063 122 7240.146 82 10110.42~

17.;79.869 83 10038.66 17 54.182 84 9~66.912 17530.962 85 9 95.155 17310.168 86 9~23.398 17091.760 87 9 51. 641 16875.700 88 967~.8~4 16661. 951 89 960.1 7 16450.476 90 9536.370 16241.238 91 9464.613 16034.203 92 9392.856 15829.335 93 9321.099 15626.601 94 9249.~42 15425.968 95 9177. 85 15227.402 96 9105.828 15030.873 97 9034.071 14836.350 98 8962.314 14643.801 99 8890.557 14453.196 100 8818.800 14264.507

• VALUE WITH A 23.lK RESISTOR IN eARALLEL WITH SENSOR RANGE * -SB TO +122 DEGREE FARENHEIT THERMISTOR BEAD = 44212

~

14077.705 13892.761 1~7~9.648 l 5 8.339 1~348.300 l 171. 28 12994.973 12820.620 12647.942 12476.917 1~307.521 1 139.730 11~7~.522 11 0.874 11645.765 11484.173 11324.077 11165.457 11008.292 10852.561 10698.247 10545.329 RNOM = ( -71. 757 ) T +15994. 5 WHERE T = TEMPERATURE IN DEGREE FARENHEIT

()

0 0

0 Wind Direction Sensor C)

The Model 024A Wind Direction Sensor is an accurate, durable and economical sensor suitable for a wide range of wind study applications. It is designed for long-term unattended operation in most meteorological environ-ments.

Features o Range to 100 mph o Low starting threshold o Broad temperature operating range o Built-in alignment and calibration feature o Accuracy of +/-5° o Stainless steel and aluminum construction Operation The sensor incorporates a preci-sion wire-wound potentiometer for accurate resolution of wind direction. The potentiometer is directly coupled to the vane assembly. Variations in w nd direction produce a correspond ing varying voltage. which lends itself to both digital and analog measurement systems Construction The construction of the sensor reflects the requirement for reliability and durability. Only the best corrosion resistant materials, such as stainless steel and anodized aluminum are used. The potentiometer meets stringent military specifications for sand, dust, salt spray and fungus resistance. The Model 024A sensor uses a quick-connect sensor cable Cable length may extend hundreds of feet without affecting measurement perfor-mance.

Accuracy, reliability and economy make the model 024A Wind Direction Sensor an ideal choice for most applications.

Specifications Range Starting threshold Accuracy Delay distance Damping ratio Standard Fast Response Potentiometer Sand, dust. fungus Salt spray Electrlcal range Operating range Weight Mounting Ordering Information Standard Model Fast Response Model Cable 0*360° 1 mph

!.50

<5 feet O 25 (metal vane ass'y)

O 4 (foam vane ass'y)

MIL*E-5272 MIL-E-12934 0*360° 0-540° with appropriate translator

-50° C to +70' C 1 lb2 oz Model 191 Cross Arm 024A (Metal Vane) 024A*1 (Foam Vane)

1. 1806-xx (xx= length in feet)

Met One Instruments, Inc.

Corporate Sales & Service: 1600 Washington Blvd, Grants Pass, OR 97526, Phone (541) 471-7111, Fax (541) 471-7116 Distribution & Service: 3206 Main Street, Suite 106, Rowlett. TX 75088, Phone (972) 412-4747, Fax (972) 412-4716 http.//www.metone.com 024A REV 12t.!619S

0 0

0

)

(

Met One Instruments MODEL024A WIND DIRECTION SENSOR OPERATION MANUAL Document No. 024A-9800 1600 Washington Blvd.

Grants Pass, Oregon 97526 Telephone 541-471*7111 Facsimile 541-471-7116 Regional Sales & Service 3206 Main St, Suite 106 Rowlett, Texas 75088 Telephone 972-412-4715 Facsimile 972-412-4716

0 0

0

(

(

024 WIND DIRECTION SENSOR OPERATION MANUAL 1.0 GENERALINFORM\\TION 1. 1 The Met One 024A Wind Direction Sensor uses a lightweight, air-foil vane and a potentiometer to produce an output that varies proportional to wind direction.

1.2 The Sensor Cable has a quick-connect connector with vinyl-jacketed, shielded cable.

Cable length is given in -XX feet on each cable part number. An 1806-XX cable is used with translators having terminal strip connections, and an 1809-XX cable is used with translators having circular MS type connectors.

TABLE 1-1 Model 024A Wind Direction Sensor Specifications Performance Characterjstjcs Azimuth Threshold Accuracy Damping Ratio Potentjometer Specs.

Temperature Range Delay Distance Electrical Characteristics Output Signal Physical Characteristics Weight Finish Mounting Fixtures Cabling 024A Revised 6/94 Electrical 0-356°*

Mechanical 0-360° 1.0 mph

+/-So Standard Optional 0.25 0.4 Sand, Dust, Fungus MIL-E-5272 Salt Spray MIL-E-12934

-50° C to +70° C 5 ft.

Varying resistance 0-10 K ohms 1.5 pounds Anochzed Use with 191 Crossarm 3-Conductor Shielded Type Cable, xx is cable length in feet

CAUTION:

THIS POTENTIOMETER HAS A SHORTING GAP WIPER. ANY VOLTAGE APPLIED TO THE SENSOR MUST BE CURRENT LIMITED TO 5 MILLI AMPS.

2.0 INSTALLATION 2.1 024A Wind Direction Sensor Installation (See FIGURE 2*1)

A Prior to installing the wind direction sensor on the crossarm remove the stainless steel screw from the hub and rotate the vane assembly slowly. It should rotate smoothly without hesitation or binding. Inspect the vane assembly to be sure it is not bent or damaged. Replace the screw in the hub.

B.

Install the sensor in the bushing end of the mounting arm. The screw in the bushing will pass through the bushing and will tighten into the sensor housing.

C.

Loosen the two set screws holding bushing and orient the sensor so that the counterweight is pointing south. The use of a transiVcompass will assure accurate alignment. When the sensor is properly aligned tighten the crossarm fitting set screws and remove the stainless steel screw from the hub. The sensor may be removed and replaced without realignment by removing the mounting screw in the alignment bushing.

D.

Remove and retain shoulder screw (11). Check to see that the vane assembly rotates freely.Rotate the sensor assembly until the counterweight is pointing due south.

E.

Connect the cable assembly to the keyed sensor receptacle and tape it to the mounting arm.

2.2 Wiring. The cable assembly contains three wires. Typical wiring hookup is shown in FIGURE 2*1.

2.3 lightning Protection. Weather sensors are sensitive to direct or nearby lightning strikes. A well-grounded metal rod or frame should be placed above the sensor installation. In addition, the shield on the signal cable leading to the translator must be connected to be a good earth ground at the translator end, and the cable route should not be vulnerable to lightning.

024A Revised 6/94

()

0

0

)

3. o OPERATIONAL CHECK-OUT AND CALIBRATION

3. 1 024 Wind Direction Sensor Check-Out A.

Rotating the vane in a clockwise direction as viewed from above will increase the output up to the 360° point and it will start over 0°.

B.

The 024A wind direction sensor should be inspected periodically for physical damage to the vane assembly and cable connections. Inspect all vane assembly parts to be sure that they are securely fastened. Inspect the sensor connector and mating cable connector for corrosion.

4. O MAINTENANCE

4. 1 General Maintenance Scbeciute*

6*12 Month Intervals:

A.

Inspect sensor for proper operation per Section 3.0.

24-36 Month Intervals:

A.

Factory replacement of potentiometer per Section 4.

B.

Recommended complete factory overhaul of sensor.

4.2 POTENTIOMETER REPLACEMENT 4.3 Remove the sensor from the crossarm and remove the vane assembly. Replacement of the potentiometer will require realignment with respect to 180 degrees. Use the following procedure to replace and realign the potentiometer.

A)

Loosen the three set screws which hold the potentiometer in the sensor housing. Pull the potentiometer up and out of the housing.

B)

Remove the three wires from the potentiometer assembly. Note the color code of the wires with respect to the pins on the potentiometer. (See the 024A Assy. Owg.)

C)

Solder the wires to the new potentiometer and install the potentiometer in the sensor housing.

024A Revised 6/94

0)

Connect the ohmmeter across pins Band Con the sensor connector. Install the vane assembly and the stainless steel hub alignment screw. Do not tighten the two hub set screws at this time. Insert a small screwdriver in the access hole in the top of the hub and rotate the potentiometer until the resistance measured across pins B and C is equal to the resistance across pins A and C (approx. 6k ohms). Tighten the two set screws carefully. The potentiometer position will tend to move slightly as these screws are tightened.

4.4 RECOMMENDED SPARE PARTS LIST (Refer to Drawing #024A)

Ref Part No.

Description A

2089 Aluminum Vane B

2088 Vane Arm for Aluminum Vane A,B 1286 Foam Vane and Arm Assy c

1685-10 Hub D

1814-1 Counterweight Arm for Aluminum Tail 0

1814-2 Counterweight Arm for Foam Tail E

1057 Counterweight A-E 2105 Aluminum Vane Assy, Complete A-E 2106 Foam Vane Assy, Complete F

2017 Potentiometer Assy G

860015 Shoulder Screw 601625 8-32 x1/4 Set Screw L

601680 8-32 x 3/8 Set Screw K

601070 2-56 x 1/6 Screw 024A Revised 6/94 0

LL 0

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CLAMP.J.J,53 SUPPi IEO AS F1J1n" (Y' 191 AIT6 A~M r1 FULL ~CALE'

'I? Fllll 'SCAlE v1FUt.L SCAU c::J TPS VjOUTPUT CJ TPd VjOUTPUT CJ TP3 V10UTl'UT CJ 7P ~ INPUT CJ Tl' I CfJMMCN

?£1i'(J r::-

OPfQArE FIJU SCJJlE r::~

IY'EPATE 2C<<J (~I)

F/Jl.L ~I.£ (S'l) 16905 MOUNTIN6 /ITAIL WIND Dlll~TION TKAN5LATDR MODlJLe FrGURE 2-1.

TYPICAL 024A WIND OIRECT/ON SENSCJe RED

'SEN~ll.

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• MJT USED.WEN OPTDV4L AUX/I.MY POWEil SUPPi. V CINrUITS AllE" IN(LL/lJCO ON Ti'ANSLATOfl MODULE

• • IBD'J *XX C"' tlt..li Fl~..,-~,ttNILA"f'tl~ S 11.lfll/(r i:11t<t1<.AL MS ~'fPE /Hfv-r COl'INE~ToR.s.

024A INSIALLATIDN

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£.U DAP llUllBD

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IT!ll PART 110.

I

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4ll0500 3

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11 HOG'15 7

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.tflDBI 11:11 I tvll'111 I 1111 uvn,.11t DI Dl!SCRIPTIOll QTY a>HlflrlOI. I PIH. FEIALI I

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LUC. SPADI. IS CABLI. 3 llRI. Sll!LDID Vil SLJ!l'flllC. V4". SRRIH VII SLE11'JllC. 1"8'". SRlllll Vil IJRI. 22 AIC. IHT'81111 11" SLEl\\llHG. 1'4' 0

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0 0

0

Evaporation Gauge

() --------------------------------------------

()

()

(4i1Jei1@ Features o Simple data collecting u High resolution n Analog output o Corrosion resistant o Range 0-8" The Model 550502 Evaporation Gauge measures the water level in a standard U.S. Class A evaporation pan (Model 550501) and provides an output proportional to that level. The gauge employs a uniquely balanced sensor assembly to allow high resolution and simple data collection without hook gauge readings and time con-suming, frequent visits to the site The sensor assembly inc udes one polypropylene float which rises and falls with the water level in the pan. The movement of the float is transferred to a SK*

ohm potentiometer by means of a rack and gear assembly. The mechanism 1s designed to ellm nate backlash The output range is O to 8 inches, with a measuring accuracy of 1%.

Movement of the float assembly also moves a pointer over an indicating scale for convenient water level checks and comparison to output device readings The scale is graduated In Enghsh units on one side and metric units on the other The potentiometer output can be input directly to a data acqu1s1bon system Alternately 1t can be input to a signal conditioning module.

Evaporation Pan It 1s constructed of low carbon stainless steel and 1s heharc we ded The pan 1s normally installed on a level wooden p'atform set on the ground Specifications Sensor: Single-float assembly on vertical guide rods.

Transducer: SK-ohm potentiometer Range: 0-8" Resolution: Infinite Accuracy: 1 % (with clean guide rods)

Potentiometer linearity: +/-0 5%

Cable: 3 conductor shielded, 50' provided Weight/shipping: 7.5/10 lbs 550502

• REV 91281115

0 0

()

Met One Instruments MODEL 550502 EVAPORATION GAUGE OPERATION MANUAL DOCUMENT 550502-9800 1600 Washington Blvd.

Grants Pass, Oregon 97526 Telephone 541-471-7111 Facsimile 541-471-7116 Regional Sales & Service 3206 Main St., Suite 106 Rowlett, Texas 75088 Telephone 972-412-4715 Facsimile 972-412-4716

0 0

0

(

Model 550502 Evaporation Gauge j

Operation Manual 1. 0 INTRODUCTION 1. 1 Description The Model 550502 Analog Output Evaporation Gauge was designed to accurately measure the changing water level in an evaporation pan and provide an electrical signal proportional to the water level from which the evaporation rate can be determined.

Although it can be used with a wide variety of evaporation systems, it is normally used with a standard Class A, National Weather Service evaporation pan. The gauge consists of a Hoat, pulley, and counterweight attached to a precision 1000 ohm potentiometer, all mounted in a protective enclosure.

1. 2 Specifications Electrical Output Range Water Level Range Height Diameter Weight Cable Connector Float Counterweight Water input port Base dimensions Total resolution Potentiometer Accuracy Rotation Resistance Operating Temperature Linearity Power 550502 Evap Gauge 12/93 0-9.73* = 0-5 Vdc a-a.a* = o-4.11 Vdc 27-1/2" 8

• 7-1/2 lbs.

1. 5883-x (X 1s length in feet) Specify length when ordering cable.

3 pin MS-type 5" diameter 4 oz 11-NP coupling, female 16' tnangle with leveling screws 0.0382" with 8-b1t converter in datalogger 1°~

Continuous 1000 ohms, standard

-50° to +125°F 0.25%

5 Vdc reg

0 0

0

0

2. 0 INSTALLATION

2. 1 After carefully unpacking all components, inspect for damage that may have occurred in shipment. Do not discard any packing material until you are certain there is no damage and all items are accounted for, including accessories. In the event of damage during shipment, a claim for loss should be filed with carrier at the receiving location.

2. 2 Remove the top cap and remove the float, chain, and counterweight which are packed in the housing for shipping.

2. 3 The gauge is connected to the pan by using 1/2" diameter pipe. Flexible tubing is acceptable provided it is not subject to deterioration. The gauge should be placed tar enough away from the pan so that it will not cast a shadow on the pan that could have an effect on the evaporation process.

2. 4 Level gauge by placing a level on the housing in front of the gear and adjusting the leveling screws on the triangular base until the unit is level.

2. 5 After connecting the gauge to the pan and securing all electncal connections. till evaporation pan with a* of water and carefully check all joints for leaks.

2.6 The pulley and the potentiometer housing have been marked with indicators that line up when the potentiometer is approximately at the breakpoint between zero and 1000 ohms resistance. To obtain the exact breakpoint for zeroing or base setting, use an ohmmeter across the white and red wires or use the actual readout device that will be used with the unit when in operation.

2. 7 The lloat chain should be placed on the pulley so that the :loat rests on the tcp of the water {8" in the evaporation pan) when the pulley is at the breakpoint. For operation, the float chain is placed on the pulley so that a falling level of water will cause c!ockw1se (as seen from the front of the pulley) motion in the pulley and a decrease in resistance in the potentiometer output. Refer to the assembly diagram.

2. 8 Carefully secure housing cover into place with allen screws.

3. O CPEAATlCN The potentiometer produces a proportional output in relation to the position of the float and can be monitored on site with a datalogger or strip chart recorder.

550502 Evap Gauge 12/93

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4. 0 TROUSLESHC011NG

4. 1 Always disconnect the reporting/recording device from power or troubleshoot immediately whenever any of the following conditions are observed: the cable has been damaged, the gauge does not appear to operate normally or exhibits a marked change in performance, the gauge has been dropped or damaged, or it moisture damage has occurred to the circuits.

4. 2 If the gauge does not register correctly, first check the connections. Check the potentiometer with a voltmeter. Be sure the reporting/recording device has been powered*up correctly. If the reporting/recording device uses batteries for its primary source of power, check that the batteries have sufficient voltage to power the device.

4.3 Check the sensor cable connections both at the gauge and at the control unit. Cable shorts can cause lack of readings. If a connection is found to be lose, tighten into place and check to see if the problem has been corrected.

550502 Evap Gauge 12193

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CAP SCCKEi HEAD SCREW 0

500502 EVAPORATION GAUGE ASSEMBLY

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WeatherHawk Series 500 Specifications Weather Station Temperature Range:

Data Storage :

I/O:

I/O Data Rate:

Wireless Frequency:

Battery:

Charging Voltage:

Current Drain :

Sensors Air Temperature:

Range Accuracy:

Resolution:

Relative Humidity:

Range Accuracy:

Resolution:

Barometric Pressure:

Range:

Accuracy:

Resolution:

Solar Radiation:

Rain:

Spectral Range Reproducibility Output Range Temp. Range Collecting Area Range Accuracy:

Resolution Wind Direction:

Azimuth:

Response Time:

Accuracy:

Resolution:

Wind Speed:

Range:

Response Time:

Accuracy:

Resolution:

-40 to +122F (-40 to +SOC) 60 days of hourly data Direct connection RS232 Optional Wireless RF 9600 baud Spread Spectrum 916 MHz Integrated 2.9 AHr Lead-Acid GelCel 16 tO 22 VDC 10 mA w/o heater 1.1 A with heater Capacitive ceramic

-60 to + 140F (-S2 to +60 C)

+/-0.9 F@ -40 to 12S F (+-0.S C @-40 to S2 C) 0.1 F (0.1 C)

Capacitive thin-film polymer 0-100%

+/- 3%@ 0-90%RH; +/- S%@ 90-1000/oRH 0.1%

Capacitive Silicon 17.72-32.48 inHg (60-110 kPa)

.OlS inHg @+32 to +86 F (+-.OS kPa @0-32 C)

.03 inHg @-60 to + 140 F ( +-.1 kPa @-S2 to +60 C)

Silicon pyranometer 300 to 1100 nm

+/-2%

.2 mV per W/m"2 Oto 1000 W/m"2

-40 to 130 F (-40 to +SSC)

Piezoelectric 9.3 in"2 (60 cm"2)

Oto 7.87 in/hr (0 to 200 mm/hr)

<S% (weather dependant)

.001 in (.01 mm)

Ultrasonic 0-360 deg 2SO ms

+- 2 deg 1 deg Ultrasonic 0-134 mph (0-60 m/s)

.2S s

+-.67 mph ( +- 0.3m/s) or +-2% which ever is greater

.22 mph (0.1 m/s)

WeatherHawk, 185 West 1800 North, Logan, UT International: 435-750-1802 TOLL FREE USA: 866-670-5982 FAX: 435-750-1749 http://www.weatherhawk.com sales@weatherhawk.com

WeatherHawk Series 500 General

Description:

The WeatherHawk Series 500 family of weather stations measure and record wind speed and direction, air temperature and relative humidity, barometric pressure, solar radiation, and rain. In addition, the system calculates and exports an evapotranspiration (ET) value that can be used by third party systems for irrigation control. They are designed for applications where a minimal visual impact, high reliability, and a long interval between routine servicing are significant factors in the decision to purchase. The standard Series 500 system incorporates an integral 3 AHr battery pack and can be interfaced with an optional solar panel for high reliability applications.

The Series 500 family is fully compatible with all versions of software, data management, input power and mounting accessories designed for the WeatherHawk Signature Series. It is also backwards compatible with all third party certified software drivers.

The Series 500 WeatherHawk systems utilize solid state sensors, with no moving parts. Solid state sensors enable a low profile design better suited to high visibility locations where a traditional weather station would be visually objectionable; they have higher reliability and a longer interval between routine service and inspection requirements; they are more robust and less susceptible to damage from wind carried debris; and they are not impaired by heavy snowfall or freezing conditions that produce rime ice (NOTE: Heated sensor versions, Models 511/521, must be used in snow or freeze zone applications).

Models 510/511 These versions of the Series 500 weather station are directly connected to a host device (PC or server) through an RS232 serial data I/O located on the bottom of the weather station. The Model 511 incorporates a thermostatically controlled heater element in the sensor head that keeps the ultrasonic wind sensor elements and the piezometric precipitation sensor surface free of snow and ice to -52° C.

Models 520/521 These versions of the Series 500 weather station are wireless to a host device (PC or server) using fully integrated industrial grade 916 MHz spread spectrum RF communications technology. They also have an RS232 serial data I/O located on the bottom of the weather station, which can be used as a second serial communications port, or for programming and testing the system, or for direct data downloads using a PC or PDA. The Model 521 also incorporates a thermostatically controlled heater element in the sensor head that keeps the ultrasonic wind sensor elements and the piezometric precipitation sensor surface free of snow and ice to -52° C. Optional configurations of both units enable replacement of the 916 MHz RF components with 922 MHz and 2.4 GHz RF components to comply with local, regional or national radio frequency licensing requirements.

WeatherHawk, 185 West 1800 North, Logan, UT International: 435-750-1802 TOLL FREE USA: 866-670-5982 FAX: 435-750-1749 http://www.weatherhawk.com sales@weatherhawk.com

Sensor Technologies Series 500 WeatherHawk weather stations employ the latest in weather measurement sensors. Wind speed and direction use acoustic techniques formerly available on only the most expensive professional wind velocity measurement systems. Rain is measured using an impact surface that literally counts the raindrops and measures their acoustic signature, integrating that information to provide a near real-time value for rainfall amount and rate. Barometric pressure, relative humidity, air temperature and solar radiation measurements are made by calibrated scientific grade sensors typically installed in the finest professional weather measurement and monitoring systems.

Wind Speed & Direction is measured by a sensor consisting of three equally spaced ultrasonic transducers in a horizontal plane. The sensor measures the bi-directional transit time along the three paths established by the transducer array. This transit time is dependent on the wind velocity across the ultrasonic path. For zero wind velocity, both the forward and reverse transit times are identical; with wind, the upwind transit time increases and the downwind time decreases. The values of any two array paths will enable computation of both wind speed and direction, and a signal processing technique enables the measurement to be calculated using the two array paths of the best quality. If the system is used in a high accuracy application a factory revalidation is recommended every five years.

Rainfall is measured with a stainless steel piezometric surface on top of the weather station. As individual raindrops (or hailstones) impact on the surface they each provide an acoustic signature that is measured and processed in real-time to give a value for their volume. The volume is then processed with respect to time to provide a rainfall rate. This measurement technique eliminates all of the traditional problems with tipping bucket type rainfall measurement devices, including worn or damaged bearings, clogged funnels and drip orifices, and damage from wind blown debris.

Air temperature and relative humidity CRH) sensors are combined In an integrated, user replaceable unit that requires no calibration. The RH sensor is a thin polymer, capacitive type sensor that degrades with exposure due to age and airborne contaminates. It should be user replaced every three years to maintain accuracy, and at a shorter interval if the location is subject to high levels of air pollution or is subject to airborne chemical spraying. The air temperature sensor is a capacitive ceramic sensor that is typically not subject to environmental degradation.

Barometric pressure is measured with a capacitive silicon temperature corrected strain gauge device that is typically not degraded by environmental exposure and does not require calibration after manufacture.

Solar Radiation is measured by a silicon pyranometer with a cut filter limiting the spectral exposure to the 300-1100 nm wavelength. This device typically degrades at a rate of 2% of the full scale value each year and should be recalibrated, or replaced every 3-5 years, depending on the application.

Data Transfer Protocols, Software and Data Interface Hardware All WeatherHawk systems communicate using a proprietary Pakbus protocol. Any qualified software developer may request a software development kit, at no charge, to assist in the development of software drivers for third party devices or software.

WeatherHawk, 185 West 1800 North, Logan, UT International: 435-750-1802 TOLL FREE USA: 866-670-5982 FAX: 435-750-1749 http://www.weatherhawk.com sales@weatherh awk. com

Software WeatherHawk offers the following software applications for weather station management, data acquisition and logging, report generation and data display.

> Visual Weather Station - a single host, multi-site professional application that will communicate with any WeatherHawk weather station, as well as CR200 Series data loggers from Campbell Scientific, Inc. Visual Weather Station adapts to any data telemetry scheme including direct connection, wireless short haul RF (spread spectrum radio), wireless long-haul RF (VHF/UHF radio), satellite modem, IP modem/server module, or landline and cellular modems. The application also offers a variety of standard and user defined reports and export file formats, and it will support the generation, export and update of a weather data GUI for a website. This application runs on PC-XP computers.

WeatherHawk-XPI X - a single host, single site consumer application that will communicate with any WeatherHawk weather station. WeatherHawk-XP/X connects using a directly to the serial port on the WeatherHawk, or by wireless short haul RF (spread spectrum radio), or IP modem/server module, or landline and cellular modems. The application also offers a three export file formats, and it will support the generation, export and update of a weather data GUI for a website. This application runs on PC-XP and Macintosh OS-X computers. This software application will also interface with the NOAA/NWS CAMEO application for First Responder applications requiring plume modeling.

> Virtual Weather Station - a single host, single site consumer application that will communicate with any WeatherHawk weather station. Virtual Weather Station connects directly through the serial port on the WeatherHawk, or by wireless short haul RF (spread spectrum radio). The application also offers a two export file formats, and it will support the generation, export and update of a weather data GUI for a website. This application runs on IBM compatible computers.

> LoqqerNet - a single host, multi-site professional application that will communicate with any WeatherHawk weather station, as well as any data loggers from Campbell Scientific, Inc. LoggerNet adapts to any data telemetry scheme including direct connection, wireless short haul RF (spread spectrum radio), wireless long-haul RF (VHF/UHF radio), satellite modem, IP modem/server module, or landline and cellular modems. The application also offers a variety of standard and user defined reports and export file formats, and with the RTMC module it will support the generation, export and update of a weather data GUI for a website. This application runs on IBM compatible computers.

> PConnect - a single host, single site professional application that will communicate with any WeatherHawk weather station, as well as a range of Campbell Scientific data loggers. PConnect is used for direct download and storage of data through the serial port on either the weather station or its companion RF4xx receiver (if wireless). The software is typically utilized for field data acquisition with later export to a PC for post-processing, display and long-term archiving. It also enables on-site reprogramming of the weather station by uploading pre-configured program files. It is not designed for long haul or automated data collection protocols. This application runs on a range of PDA devices, check with Campbell Scientific, or WeatherHawk for a list of compatible units.

WeatherHawk, 185 West 1800 North, Logan, UT International: 435-750-1802 TOLL FREE USA: 866-670-5982 FAX: 435-750-1749 htto://www.weatherhawk.com sales@weatherhawk.com

~ Weather Display - a single host, single site consumer application that will communicate with any WeatherHawk weather station. Weather Display connects directly through to the serial port on the WeatherHawk, or by wireless short haul RF (spread spectrum), or IP modem/server module.

The application also offers a range of export file formats, and it will support the generation, export and update of a weather data GUI for a website. This application runs on PC-XP computers.

Data Interface Hardware Weatherproof serial cables are available in 25, 50 and 75 foot lengths for permanent direct connection to the RS232 I/O on any WeatherHawk weather station. These cables feature nickel plated brass DB-9 connectors for corrosion resistance and have a Sanoprene jacket which is suitable for both high UV and direct burial environments.

An RF4xx spread spectrum RF transceiver is supplied as standard equipment with every wireless WeatherHawk weather station. The unit comes with an AC power supply (120 VAC/60 Hz), a 6 foot serial cable and an antenna. Additional RF4xx kits can be purchased for simultaneous communication with any WeatherHawk wireless weather station, enabling multiple host computers to use the data from a single weather station. Typical applications for multiple receiver units are in home automation where a single weather station may support a whole house control unit, with touch panel data display units; and a discrete PC, which may act as the server for a local intranet or internet weather data display website.

WeatherHawk IP server modules are a proprietary web server that is designed to interface the serial output of any WeatherHawk weather station, or companion RF4xx transceiver with an Ethernet. Output formats from the IP server module are HTML, XML and CSV (with headers).

Mounting Systems All WeatherHawk weather stations will interface with the full range of mounting systems supplied by WeatherHawk. They consist of:

TP-1 Tripod - The tripod, with its range of accessories is the most rugged and adaptive weather station mounting system. It supports both rooftop (sloped and flat) and ground mounts, with mast heights to 10 feet. Accessories consist of a weather station alignment kit (optional), ground stakes (optional), a rooftop sealing kit (standard), grounding rod kit (optional), mast length extensions (optional), and a guy-wire kit (optional).

HM Series - The HM Series house mount kits are adapted satellite dish mounts that will support attachment to sloped and flat roofs, and to the vertical facia and reinforced trim boards around the roofline of a home. The accessories consist of mast extensions, a Retro-deck base assembly that offers additional stability and support on composite roof coverings; and a Comm-deck mount that offers a weatherproof penetration through a roof for a directly connected weather station.

Various additional specialized mounting tripods are available for high environmental abuse environments, or quick deployment temporary applications.

WeatherHawk, 185 West 1800 North, Logan, UT International: 435-750-1802 TOLL FREE USA: 866-670-5982 FAX: 435-750-1749 http://www.weatherhawk.com sales@weatherhawk.com