ML17158A163

Remote Indication of Spent Fuel Pool Level & Temperature

ML17158A163
Person / Time
Site:	Susquehanna
Issue date:	12/09/1993
From:	PENNSYLVANIA POWER & LIGHT CO.
To:
Shared Package
ML17158A157	List: ML17158A156 ML17158A163 ML18026A436
References
93-3075, 93-3075-R, 93-3075-R00, NUDOCS 9403100140
Download: ML17158A163 (38)

Text

ENCLOSURE 2 SAIZTF EVALUATIONCOVERSIIEET REMOTE INDICATIONOF SPENT FUEL POOL LEVELAND TEMPERATURE No. ~3-3 75 UNIT¹ 1

DCP ¹ 93-3075 PROCEDURE ¹ N/A O'I'HER N/A SUSQUEE&LlVNA STEAM ELECTRIC STATION PENNSYLVANIAPOWER & LIGHTCOMPAlVY 0

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PRH ARED BY/

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Lht/6 This signature of the Responsible Supervisor indicates approval of the safety evaluation and confirms that interfaces with other disciplines, functional groups. etc. have been considered and have been incorporated into

'hc evaluation as necessary.

The Responsible Supervisor must be designated on Form NDAP-QA4726-3.

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s:5646 l3643 SE933075.wp5 9403i00140'i940228 f Da ADOCK0SOOOS87 FORM NDAP-QA4726-1, Rev. 0 Page l of l3

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SER 93-3075 SAFEZY EVALUATION¹g+)~7'i REMOTE INDICATIONOF SPENT FUEL POOL LEVELAND TEMPERATURE I.

System/Procedure/Experiment Identification.

System 136A Spent Fuel Pool DCP No. 93-3075 Remote Indication of Spent Fuel Pool Level and Temperature II.

Description and Implications of Proposed Action.

A. Fully describe the action and its purpose.

1 Raahgaamk The existing spent fuel pool level instrumentation consists of high and low level alarms (LAH-15332; LAL-15332) on local panel OC211 located in the reactor building on the refueling floor elevation 818'.

Existing spent fuel pool temperature instrumentation consists of local analog indication (TI-15333) and a high temperature alarm (TAH-15333) also located on OC211 on the refuel floor.

No spent fuel pool level or temperature indication exists in the main control room, however, the local level and temperature alarms are transmitted to the control room as an OC211 trouble alarm.

The lack of fuel pool level and temperature indication in the control room is a deficiency noted in EDR G20020, Nuclear Technology'eport NE-092-002, NSAG Report 13-84, NSAG Report 1-88, and NRC Unresolved Item 89-21-01.

In the event of a loss of fuel pool cooling, the existing design would limit the operators ability to plan and take appropriate action to mitigate the event since the FORM NDAPQA72&1, Rev. 0 Page 2 of 13

SER 93-3075 existing indication in the fuel pool area may not be accessible for a Regulatory Guide 1.3 accident with airborne radiation.

Off-normal operating procedure ON-135-001, "Loss of Fuel Pool Cooling/Coolant Inventory", requires the operator to manually open the valves in the ESW make-up line to the fuel pool ifall other means of adding water are lost.

The operator enters this procedure upon annunciation of low level in the spent fuel pool or high temperature in the fuel pool cooling system.

2.

The purpose of this modification is to implement the recommended action per PP&L MSR 020673 to provide remote indication in the control room for Spent Fuel Pool level and temperature.

This modification is an enhancement to the plant in that it adds reliable fuel pool level and temperature indication for operator informatioti. The design basis for this modification is described in SEA-ME-418, "Design Requirements for Spent Fuel Pool Level and Temperature Instrumentation for EDR G20020", prepared by Nuclear Technology.

The modification is illustrated in the attached simplified sketch. It installs a non-safety related level probe on a dynamically designed and installed support bracket which is welded to the Spent Fuel Pool liner above the normal water level. The level probe is located near the existing level switch supports.

The signal lead wires exit the probe and are encased in sleeving for insertion into waterproof fiex conduit to an existing junction box near the mounting support.

The field cable from the junction box is routed in existing embedded conduit in the Reactor Building refueling floor and then through existing conduit and raceway to control room panel 1C644 for connection to a non-safety related level transmitter which

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is mounted internal to the panel on structural dynamic supports.

A 4-20 mA output of the level transmitter is an input to Pen 1 of a new non-safety related recorder mounted through the front of panel,lC644 and fastened to structural dynamic supports internal to the panel.

The range of level measurement is 0 to 28 inches, which corresponds to elevation 815'9" to elevation 818'" in the Spent Fuel Pool.

FORM NDAP-QA4726-1, Rev. 0 Page 3 of 13

SER 93-3075 The existing RTD mounted in the Spent Fuel Pool is a platinum 100 ohm dual element device.

Leads from both elements are routed through existing conduit to panel OC211 located on the refueling floor of the Reactor Building.

The existing spare element of this 2 element RTD has no function and is only terminated at the OC211 panel.

A new cable is routed to tie this spare RTD element to Pen 2 of the new non-safety related recorder in control room panel 1C644.

The range of the digital readout and chart is 50'F to 220'F to envelope the 212'F pool boiling temperature.

The new level/temperature recorder has both a digital readout and a chart drive.

Non-Class lE power to the level transmitter and recorder is provided from a Class lE panel source (distribution panel 1Y226, breaker 46). Although the level transmitter and recorder circuit does not perform a safety related function, Class 1E instrument power is being used to provide a higher level of reliability. The Class 1E/non-Class 1E isolation devices and wiring configuration is an accepted and approved electrical isolation method per PP&L Specification E-1012 Sections IV.A.2.Hand IV.A.2.Iand FSAR Section 8.1.6.1.q.5 (method iii)to provide the interface between the Class 1E instrument power source and the non-Class 1E instrument loads.

The isolation scheme consists of a qualified Class 1E fuse/fuse block placed in series with a non-Class lE fuse/fuse block which are selected and sized for their application.

The fuses are coordinated with the upstream distribution panel branch circuit breaker so that a fault in the non-safety related circuit will be isolated without affecting the upstream circuit breaker thereby maintaining the integrity of the Class 1E system.

B.

Identify all the components that willbe affected.

The components that are affected or potentially affected by the proposed action are as follows:

FORM NDAPQA4726-1, Rev. 0 Page 4 of 13

SER 93-3075

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~EI v OC211 1C644 1Y226 Spent Fuel Pool Reactor Building Penetration (X-27-4-43)

Fuel Pool Control Panel MSIV Leakage Control System Vertical Board 120 VAC 1E Instrument Power Distribution Panel 27 818 12 729 28 683 27 818 27 719 C.

List Safety Functions of affected components.

Panel OC211 performs no safety function.

V i

Panel 1C644 is the MSIV Leakage Control System (MSIV-LCS)control panel associated with Division II. The cabinet is qualified to meet SSES dynamic requirements and is designed to maintain electrical and physical separation requirements.

This modification has an interface with the physical cabinet enclosure and an electrical interface with the 1E power source.

V Pw Di The safety function of the 120 VAC 1E instrument power is to provide highly reliable power to safety related components and systems required to safely shutdown the plant and mitigate the consequences of an accident.

The Class lE 120 VAC Instrumentation Power Distribution System Panel

1Y226, Breaker 6, distributes Class 1E 120 VAC control power to the Division IIMSIV LCS Control Panel 1C644.

FORM NDAP-QA4726-1, Rev. 0 Page 5 of 13

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SER 93-3075 The Spent Fuel Pool is safety related since it provides storage, shielding and cooling for the spent fuel.

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X-27-4-4 The Reactor Building penetration maintains the Reactor Building integrity. The Reactor Building penetration integrity and the HVAC system prevent uncontrolled release of radioactivity.

D.

Describe potential effects on Safety Functions.

Panel OC211 performs no safe shutdown functions and has no safety functions.

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i There are no potential effects on the safety function of the 1C644 MSIV LCS vertical board resulting from this modification.

r The new Class 1E fuses and fuse blocks to be installed in Panel 1C644 are dynamically qualified; and the new Class lE and non-Class 1E components to be installed in Panel 1C644 are dynamically mounted to maintain the integrity of the panel.

The additional weight added to the panel has no affect on it's dynamic qualification.

Internal panel SIS wire is Class 1E and is selected and sized to support its required load current and overcurrent protection requirements.

This Class lE wiring is routed in accordance with the separation criteria requirements of SSES Specification E-1012 Section IV.A.2.H. Therefore, the new wiring maintains the integrity of the applicable Class 1E electrical systems with which it is associated.

FORM NDAP-QA4726-1, Rev. 0 Page 6 of 13

SER 93-3075 Work within the 1C644 control room panel for recorder and level transmitter installation and to obtain a Class 1E power source occurs during non-outage conditions.

The existing equipment within this cabinet "Main Steam Isolation Valve Leakage Control System (MSIV LCS)", Division II, is safety equipment and has redundant Division I equipment located within Panel lC645. The MSIV LCS equipment only has a manually actuated post LOCA function.

Only panel 1C644 is used to supply reliable 120 VAC instrument power.

Proper system blocking is required for final tie-in to the Class lE power distribution supply.

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Di There are no adverse effects to the safety function of the 120 VAC 1E Instrument Power System resulting from the proposed action because of the insignificant load added by this modification (>> 70 watts).

The non-Class 1E instrument circuit is protected by an acceptable isolation systerq (i.e., a Class 1E fuse in series with a non-Class 1E fuse) whose components are selected and sized such that a fault in the non-1E circuit willbe isolated without propagating into the 1E circuit due

.to properly coordinated fuses/breaker.

The two isolation system fuses were selected such that the type and time-current characteristics, as well as the manufacturer, are different to preclude the possibility of common mode failure.

FSAR Section 8.1.6.l.q.5 (method iii)documents that electrical isolation is required and provided between Class 1E circuits and non-Class lE circuits in compliance with NRC Regulatory Guide 1.75-1975 and IEEE 384-1974.

This FSAR section, as well as FSAR Table 8.1-2 document that the proposed overcurrent protection is an approved isolation method for providing the Class 1E to non-Class 1E interface.

There are no potential effects on the safety functions of the Spent Fuel Pool since the equipment installed by this DCP only provides a monitoring function of the Fuel Pool level and temperature.

The Spent Fuel Pool liner plate is not adversely affected by the additional load from the level probe/support.

Welding on the liner to install the new level probe mounting bracket occurs above the normal water line. Welding is performed FORM NDAP-QA4726-1, Rev. 0 Page 7 of 13

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SER 93-3075 in accordance with existing procedure AD-QA-923, "Control of Welding".

The Modification Work Package will contain strict controls to ensure that weld spatter or foreign objects do not enter the pool.

Penetration of the P-line wall is through the southern most 2" sleeve of penetration X 4-43.

There are no safety related circuits in this penetration and loss of any existing circuits in the penetration would not prevent safe shutdown of the plant.

Adding cable to this penetration does not affect safe shutdown or the safety function of the penetration.

P-line wall is a Negative Leak Rate Test (NLRT) boundary, therefore, existing procedure MFP-QA-5250 willbe followed to safely breach the penetration.

E.

Describe the bases or assumptions used in supporting documentation for this safety evaluation.

There are no unconfirmed assumptions associated with this modification.

Response

to EDR G20020 is the bases for this modification.

Other supporting documents for DCP 93-3075 and this Safety Evaluation include:

Calculation E-AAA-831, "120 VAC Voltage/Loads" Calculation FGK-PWY-006, "Level Probe Support Bracket Design" Calculation KC-C-PWY-007, for Dynamic Analysis of Panel 1C644 SEA-EE-543, "Appendix R Evaluation for DCP 93-3075" SEA-ME-418, "Design Requirements for Spent Fuel Pool Level and Temperature for EDR G20020" FORM NDAPQA4726-1, Rev. 0 Page 8 of 13

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1 SER 93-3075 III.

Does the proposed action increase the probability of occurrence or the consequences of an accident or malfunction of equipment important to safety, as previously evaluated in the SAR?

(Include specific reference to FSAR sections that are applicable.)

YES NO Provide a discussion of the basis and criteria used in arriving at the above conclusion.

The Spent Fuel Pool is discussed in FSAR Section 9.1.2 and Electrical Class 1E requirements are contained in FSAR Section 8.1.6.1.q,5.

This modification does not increase the probability of occurrence of any accident evaluated in the SAR, including FSAR Sections 6 and 15. The non-safety related remote indication of Spent Fuel Pool level and temperature provides no interlocks with existing plant equipment and is independent of all installed circuits that do provide interlocks with existing plant equipment.

Failure of the new non-safety related instrument loop would result in loss of Spent Fuel Pool level and temperature indication in the control room but could in no way contribute to an increase in the probability of pn accident or become an accident initiating event.

The Class lE components being added by this modification are dynamically qualified for installation in their proposed locations.

The non-Class 1E components are dynamically supported to prevent safety impact (II/I)concerns.

Panel 1C644 dynamic qualification has been addressed for the addition of all components.

The terminations of the internal power wiring and the installation, determination and re-termination of cables is in accordance with an existing approved installation procedure.- The new signal cables for the level probe and RTD are routed in existing conduit and raceway and therefore do not affect any cabling utilized for Appendix R or safe shutdown function (reference SEA-EE-543).

This modification does not increase the probability of occurrence of a malfunction of equipment important to safety since:

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no system or component interlocks are provided; FORM NDAP-QA4726-1, Rev. 0 Page 9 of 13

SER 93-3075

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new component design features provide for seismic/dynamic installation for protection of the fuel pool, the lE power source, and the safety related components located in 1C644;

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appropriate electrical isolation per Spec E-1012 has been provided for protection of the 1E power source in the event of a fault in the non-1E portion of the loop.

This modification does not increase the consequences of an accident since failure of any component installed by this DCP will in no way initiate or change the outcome of any accident and, therefore, will not have any affect on the radiation dose to the public.

This modification does not increase the consequences ofa malfunction ofequipment important to safety since design features have been utilized to ensure that no adverse affect on any structure, system, or component could occur due to the failure (mechanically or electrically) of the new equipment.

IV.

Does the proposed action create a possibility for an accident or malfunction of a different type than any evaluated previously in the SAR?

(Include reference to specific FSAR sections applicable.)

X YES NO Provide a discussioa of the basis and criteria used in arriving at the above conclusion.

This modification does not create the possibility of an accident of a different type than any evaluated previously in the SAR since failure of the new components installed by this DCP would result only in loss of control room indication of Spent Fuel Pool level and temperature.

This modification does not create the possibility of a malfunction of equipment of a different type since all potential failure modes (mechanical and electrical) have been considered, and appropriate design features (dynamic mounting, electrical separation, isolation) have been implemented.

These design features eliminate all credible failures that could adversely affect FORM NDAPQA4726-1, Rev. 0 Page 10 of 13

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SER 93-3075 the operation of any structure, system, or component whose failure could potentially result in an unanalysed event.

V.

Does the proposed action reduce the margin ofsafety as defined in the basis for any Technical Specification?

(Include reference to specific Technical Specification sections that are applicable.)

"YES NO Provide a discussion of the basis and criteria used in arriving at the above conclusion.

This modification is an enhancement to the plant to provide control room indication for monitoring Spent Fuel Pool level and temperature.

The instruments provide a monitoring function only and make no change to normal spent fuel pool level or to the minimum level required (22 feet) by Technical Specification 3/4.9.9. There is no change made to any margin of safety by the components added in this DCP.

VI.

Does the proposed action involve a change in a Technical Specification?

YES NO If"YES", NDI+A-3.2.1 "Technical Specification Changes" applies.

A "YES" answer does not preclude activity up to a point Just before it would physically affect the functioning of the plant.

Provide a discussion of the basis and criteria used in arriving at the above conclusion.

Ifappropriate, describe the extent of activity and why it should be allowed to proceed prior to the Technical Specification change.

FORM NDAPQA4726-l, Rev. 0 Page ll of 13

I 4

SER 93-3075 The Spent Fuel Pool level and temperature instrumentation being added by this DCP. are not new Technical Specification devices nor are they required to ensure that plant operation is maintained within the limits of any existing Technical Specification.

VII.

Does the proposed action create the need to make an application for amendment to the license other than to Appendix A?

YES NO Provide a dIscussion of the basis and criteria used in arriving at the above conclusion.

An unreviewed safety question has not been created by this modification and after review of the Operating License including all amendments, the Emergency Plan, Design Assessment Report'and the Safety Evaluation Report (NUREG 0776, including its supplements) it is concluded that this modification does not violate any licensing. commitments and that there is no need to make an application for amendment to the license based on the proposed modification.

FORM NDAPQA4726-1, Rev. 0 Page 12 of 13

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SER 93-3075 SIMPLIFIED SKETCH OF DCP 93-3075 CB RB Fuel Pool New INTRO loprl New Ccats acaullcc lC644 Panel Io0o 0o 0o 0e 0e 0o 0o 0

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FORM NDAP-@A%726-1, Rev. 0 Page 13 of 13

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NUCLEAR DEPARTMENT SUSQUEHANNA STEAM ELECTR(C STATlON PROCURENIENT REQUEST - lNATERIALS PR No.

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Ths material or service specified in the referenced requisitian must bs JrrrrI bought fram or 0 manufactured by the following supplier.

Aw,on Od'7~0 Reason{s):

{NOTE: Check ail reasons that apply)

JK Supplier is the only source known to possess tire design

drawings, specifications, technical capabilities, qualified personnel, equipment or ability to meet PPCLL performance requirements necessary to proyide the required material or services CI There is insufficient infannatldn. to adequately describe the material or service even though itmay be commercially available.

The material or service must be purchased from the referenced supplier until sufficient information is obtained so that equivatent material or service can be purchased.

CI The procurement is for trial, proprietary. unique or stst~t-the-art material or service.

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{as defined in POM 220.3 Paragraph 4.5).

8 Other (sxpfafnl nfj~ Q SIC /s rd 47$

No order for this material or service should be placed which deviates from the instructions given above without the concurrence of the requisitioning department.

Signature (Person with Oelegation of Authority for Sole Source)

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Attachment to Procurement Request - Materials P

Page 3

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~g National Technical Systems shall reviev the Gems XM800 level transmitter and RE36562 receiver for installation and use at Susquehanna Steam Electric Station (SSES).

The reviev shall entail comparison of the Gems Commercial Grade components to previously qualified environmental and seismic units for similarity in construction and material.

The attached SSES environment and SSES seismic curves for 1 OBE 6 24 dampening shall be bounded.

The level transmitter vill be located on elevation 818 in the Reactor Building.

The level receiver vill be mounted inside a

panel in the Main Control Room in the Control Building.

Equipment per Gems data sheets shorn on pages 10 - 12 shall be supplied.

PPtL procurement shall send the Gems data sheet (pages 10 -12) to NTS for their use in procuring the transmitters and receivers from Gems.

Susquehanna unique transmitter and receiver dravings shall be supplied for reviev and comment.'nstruction Manuals for each device shall, also be supplied.

10CFR50-21 is not applicable.

IEEE 323 and 344 are not applicable.

A Certification of Compliance to the requirements of the Purchase Order shall be provided.

This shall include certification of operability under the environmental and seismic conditions contained herein.

Attachment to Procurement Request - Materials P

Page ~ of ~9 LEVEL TRANSMITTER EQUIPMENT REACTOR BUILDING FUEL HANDLING FLOOR I>>

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Quantity ofUnits Required Purchase Order No.

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To Specie aui Oahr a Syei5c~ of GSaelXM4008 I ~U~

Cbeck oem enter the pmpose value foreach item in the "StandaxCUnit CbeckLiet",aexeqaired foryourap-plicathn. %zeta oat addithnal aygRicathn deecnpthn

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Attachment to Procurement Request - Materials g

Page l& of ~~

APPLICATION DESCRIPTION/OTHER REQUIREMENT 1.

Ad)ustable stem required.

2.

Twenty foot polyoleiin lead wires.

3.

Special length dimensions per attached sketch.

Caution:

Any change in dimensions must be promptly transmitted to PPQL since the dimensions may affect mounting support and loop accuracy.

V 4.

Gems receiver RE36562 with no alarms, no meter, and one 4-20 ma output shall be supplied.

5.

A Certificate of Conformance from Gems to NTS shall be supplied to certify that the probe's:resistive value has been matched to the receivers resistor for a 4-20 ma output corresponding to the 0 to 28 inch float displacement.

This COC shall be attached to the NTS COC supplied to PPCL under the requirements of this purchase order.

6.

A drawing of the probe's internal components and their radiation resistance shall be supplied.

7.

A certified drawing (similar to that shown on page

12) shall be supplied for the as-shipped transmitter that includes all dimensions.

8.

Drawings of the receiver outline and electrical schematic shall be supplied.

9.

Ten Instruction Manuals shall be supplied.

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ENCLOSURE 4 Continuous Liquid Level Indicators Transmitters General Operating Principle GEMS basic transmitters, the level sensing unit of the XM-or Roll Series, is vertically mounted in the tank and cable-connected (3 viire) to a remote receiver. A voltage divider extends the fullindicating distance within the sealed transmitter stem, viith magnetic reed switches tapped in at regular intervals (see Typical System Schematic). These switches are, in turn, connected to the indicating meter in the receiver.

A regulated 24 VOC from the receiver is applied across the voltage divider..-'e it moves with liquid level, the float magnetically closes a series of reed switches in sequence that varies the tapped-off portion of the divider voltage which is applied to the indicating meter.

RECKNER TO 24 VOC.

I IS VAC OA aaovAc powER TAP SWITCHES TRANSMITTER PERMANENT MAGNET Signal Conditioned Transmitters GEMS XT-Series Transmitters, equipped with built-in signal conditioning, provide regulated 0-5 VOC, 0-t2 VOC or 4.20 mA outputs. These signal conditioned transmitters can be directly interfaced with GEMS digital receivers shown in this catalog or user's instrumentation such as process controllers, recorders or microprocessors.

No intermediate receiver is needed.

GEMS signal conditioned transmitters can operate on an unregulated OC input voltage, since regulation is provided by discriminator circuitry in the signal conditioning. Tap switch operation and external configurations are the same as transmitters.

Voltage Divider Design Ensures Consistent Accuracy GEMS voltage divider uses a staggered series of reed switches tapped in a "2-3-2 at-a-time" sequence (see diagram below). When two adjacent switches are closed, the effective electricaf tap point is midway between the two. When the float closes the next switch, while holding the first two closed, the effective tap point is at the middle switch of the three, and distance "E" from the first tap point Since voltage drops are read at the meter for each distance "E" of fioat travel, any inaccuracy would be limited to this distance plus meter and other circuit tolerances.

FLOAT Typical System Schematic USAGE A float moves wrth rxtuid level along a tubutv ifvisfnlttcf contafmng a voltage dNidcr.

The linet magna!lesly taps olfa voltage.whichis read by an indicating meter in a fcccfYcf...vid fs 4lcclly protectional to liquid levcL TANK OC POWER SUPPLY INOCATING METKA EFFECTIVE VOLTAGE TAP PONT T'

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FLOAT I

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[JU 44 SWITCHES SWITCHES SWITCHES A a S CLOSEO 8 a c cLosEo "E-= 1/4'r t/2'; dfstance the float travels to tap otf the next higher for lower) voltage. dcpcfxhng on uansmntcr series. Therefore. the level indicated fs within 1/4'f t/2'f the true level over the total indicating distance. rcgvdless of tank depth.

Monitoring Levels of Dissimilar Liquids By design or otherwise, dissimilar liquids often reside in the same tank-one floating atop another. Most tank gauging methods are limited in these cases, and can only indicate the level of the uppermost surface. But, with GEMS Transmitters, you can easily monitor the interface between liquids...gcluding the emuf9ons and slurries that sometimes form between them.

By adjusting the specific gravity of the magnetic float, GEMS can adapt the transmitter to monitor the interface of a broad range of media. This principle applies to oil and water, slurry and solids, acids and bilge, and other dissimilar liquids.

In conjunction with low level alarms, or automatic controllers, GEMS Transmitters willhelp assure that only the 'correct'iquid is taken from a tank, or introduced into a processl system.

LOWSPECIFIC GRAVITYUOUIO ICGH SPEOFIC GRAWIYLIOUIO INTERFACE CI TRANSMITTER INTKRFACE ea TRANSMATEA

'BSOLUTE LEVELTNSMITTEA Multiple GEMS Transmitters can accurately monitor proporhons of dos mear fktukts and cmulakNS wnhin a single tank.

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'I 1/4 Resolution Transmitters... Lengths to 70 For use in small tanks and vessels, GEMS Compact Transmitters are accurate to 2 1/4; regardless of tank de pth. They are suitable for use in a wide range of commercial and industrial liquid monitoring applications. The broad scope of designs and materials allows you to configure the appropriate unit to meet your project needs.

XM-800 Series and XM-820 Series General Purpose Use These versatile transmitters, in brass or stainless steel, are suitable for general purpose use.

The XM.800 units mount inside tanks; the XM-820 units are used for external mounting.

Both series can be supplied with maximum overall lengths to 70'.

XMP-800 Series Plastic Construction Plastic construction makes this series particularly suitable for chemical processing applications.

XM-850 Series-For Low Specific Gravities Designed for use in fiuids with specific gravities as low as 0.40, these transmitters, in brass or stainless steel, are available with a choice of mounting types. Adjustable versions are also available.

XT-800 Series and XT420 Series-Signal Conditioned Transmitters Transmitters with the "XT'refixfeature signal conditioned outputs to permit direct connection into a wide range of process control and other instrumentation. Transmitter outputs are compatible with I

most control circuitry. These units are appropriate for large multi-tank'complexes using a variety of panel instrumentation.

See Pages 24 and 25 for signal conditioned modules to provide 0.5 and 0-12 VDC or 4 to 20mA outputs. Versions are also available with high and low alarms which are actuated by the output signal.

Receivers i

Alato0 Mattt tttcchtat statKNI Lawl Oiytal 4.20 mA tatatal 4-20 mA Acccner m tottmean Etctoaota Anyof these receivers shovm, detailed on Pages 17 through 23, canbe used with any XM-or XT-Series Transmitter in this section.

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