Flexible Sensors for ThermowellTemperature Assemblies

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Easy,Slide-In

Installation

Data Sheet 3.98August 2004

© 2004 Moore Industries-International, Inc.231-710-01B

In both new and retrofit applications, the WORMFlexible Sensors for Thermowell TemperatureAssemblies replace restrictive straight sensor probeswith a universal sensor strategy that will save youtime and money.

Unique Flexible Design Installs in MinutesWith straight sensors, you have to remove theconnection head, and sometimes thermowellassembly components, to get the sensor into thethermowell. The WORM bends right through the topor face of the enclosure. It slides through theenclosure’s conduit port, and into (or out of) thethermowell without having to remove the enclosure orany assembly components (Figure 1).

Figure 1. The WORM lets you replace a sensor without removingthe enclosure or disassembling the thermowell.

U.S. and Foreign Patents Pending

Features• Universal, trims tothermowell length.There’s no need to stock anexpensive array of differentsensor lengths. With aquick measurement and asimple trim-to-length, theWORM handles nearly everythermowell assembly.

• Ideal for hockey-puck, connection head anddual-sided enclosures. The innovative WORMprovides cost and time advantages for all types oftemperature transmitter enclosures.

• Popular RTD and thermocouples. Availablesensor types include 100 and 1000 ohm, platinumRTDs; plus J- and K-type thermocouples.

• Faster response time. The WORM delivers stepresponse times 13% faster than standard sensors.

Flexible Sensors for ThermowellTemperature Assemblies

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Installs in MinutesEach of the three installation options uses differentparts from the installation kit; expect to have parts leftover after installation. Read through all steps for theenclosure type prior to beginning installation.

Figure 2. The WORM Kit Components

Sensor Probe & Wiring

2-Inch & 1-Inch Spacers–keeps the WORM straight inside the lag

Spring–for pushing the sensor probeagainst the base of the thermowell

Stopper–for use in Generic Installations,holds the WORM assembly inside of the thermowell

Cap–for use in Head-Mount and Field EnclosureInstallations, holds the WORM assembly inside of the thermowell assembly

Clip–in Field EnclosureInstallations, holds the cap in place

Field Enclosure Installation(Including Moore Industries’ DH & BH enclosures)

Installation Components Required: Sensor Probe,Spring, Cap, Clip, and Spacer(s).

1. Determine the length of the thermowell assembly (seethe illustration to the right). Cut the WORM Spring to bebetween 1 and 1½ inches longer than the length of theassembly (this is necessary so that the Spring'scompression securely holds the sensor probe to thebottom of the thermowell).

2. Ensuring that the uncut portion of the Spring faces downtowards the Sensor Probe, slide the Spring over the sensorwires and onto the end of the Sensor Probe.

3. Snap the Clip onto the Cap. Then slide the Cap/Clipcombination over the sensor wires onto the top of theSpring.

4. Remove the instrument from the enclosure (if neces-sary). Insert the WORM sensor into the thermowell. Slidethe appropriate length(s) and number of Spacers to keepthe WORM Spring straight inside the thermowell assemblylag (Spacers may not be required).

5. Using pliers, grasp the Cap/Clip combination by theniche at the top of the Cap, and insert it into theenclosure’s sensor entry port to compress the WORMSpring into the thermowell. Reinstall the instrument intothe enclosure. Connect the sensor wires.

SensorProbe

1-InchSpacer

Spring

Cap & Clip

Field Enclosure(Including Moore Industries’ DH & BH)

2-InchSpacer

1-InchSpacer

Determine the length of the thermowell

assembly and cut the Springto be between

1 and 1½ inches longer.

Flexible Sensors for ThermowellTemperature Assemblies

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SensorProbe

Spring

1-InchSpacer

2-InchSpacer

1-InchSpacer Determine the

length of the thermowell

assembly and cut the Springto be between

1 and 1½ inches longer.

U.S. and Foreign Patents Pending

SensorProbe

Spring

Stopper

Generic Enclosure

1-InchSpacer

2-InchSpacer

1-InchSpacer Determine the

length of the thermowell

assembly and cut the Springto be between

1 and 1½ inches longer.

Head-Mount Enclosure Installation(Including Moore Industries’ LH enclosure)

Installation Components Required: Sensor Probe,Spring, Cap and Spacer(s).

1. Determine the length of the thermowell assembly (seethe illustration to theleft). Cut the WORMSpring to be between1 and 1½ incheslonger than thelength of the assem-bly (this is necessaryso that the Spring’scompressionsecurely holds theSensor Probe to thebottom of thethermowell).

2. Ensuring that theuncut portion of theSpring faces downtowards the SensorProbe, slide theSpring over thesensor wires andonto the end of theSensor Probe.

3. Slide the Cap overthe sensor wires ontothe top of the Spring.

4. Remove theinstrument from theenclosure. Insert theWORM sensor intothe thermowell. Slidethe appropriatelength(s) and numberof Spacers to keepthe WORM Springstraight inside thethermowell assemblylag (Spacers may notbe required).

5. Reinstall the instrument into the enclosure, compress-ing the WORM Spring into the thermowell with the bottomof the instrument. Connect the sensor wires.

Generic Enclosure Installation

Installation Components Required: Sensor Probe,Spring, Stopper and Spacer(s).

1. Determine the length ofthe thermowell assembly(see the illustration to theright). Cut the WORMSpring to be between 1and 1½ inches longerthan the length of theassembly (this isnecessary so thatthe Spring’s com-pression securelyholds the SensorProbe to the bottomof the thermowell).

2. Ensuring that theuncut portion of theSpring faces downtowards the SensorProbe, slide theSpring over thesensor wires andonto the end of theSensor Probe.

3. Remove theinstrument from theenclosure (if neces-sary). Insert theWORM sensor intothe thermowell. Slidethe appropriatelength(s) and numberof Spacers to keepthe WORM Springstraight inside thethermowell assemblylag (Spacers may notbe required).

4. Slide the Stopperover the sensor wiresonto the top of theSpring. Push theStopper firmly intothe thermowell entry port to compress the WORM Springinto the thermowell.

5. Reinstall the instrument into the enclosure. Connectthe sensor wires.

Flexible Sensors for ThermowellTemperature Assemblies

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The WORM Sensor Kit

SEN3 Recommended Sensor Kit includes Three Complete "the WORM" Sensor Assemblies plus Spare Assembly PartsSEN1 Sensor Kit includes One Complete "the WORM" Sensor Assembly

Sensor Length (See Page 2 to Determine Total Sensor Insertion Length)

CL24 24-Inch Length (specify for total sensor insertion lengths of 22-inches and under)CL36 36-Inch Length (specify for total sensor insertion lengths of 22-inches to 34-inches)

Sensor Sheath Diameter

D25 Appropriate for 0.25-inch and 6mm diameter applications

Sensor Sheath Material

S316 Stainless Steel 316

Sensor Type (see IMPORTANT NOTE)

RTD SENSORS:WSPT14 Standard Platinum RTD; 4-Wire; 100 ohm; alpha = 0.00385WSPT104 Standard Platinum RTD; 4-Wire; 1000 ohm; alpha = 0.00385

WHPT14 High Temperature Platinum RTD; 4-Wire; 100 ohm; alpha = 0.00385WHPT104 High Temperature Platinum RTD; 4-Wire; 1000 ohm; alpha = 0.00385

THERMOCOUPLE SENSORS:WSTCJG Standard J-Type Thermocouple; GroundedWSTCJU Standard J-Type Thermocouple; Ungrounded

WHTCJG High Temperature J-Type Thermocouple; GroundedWHTCJU High Temperature J-Type Thermocouple; Ungrounded

WSTCKG Standard K-Type Thermocouple; GroundedWSTCKU Standard K-Type Thermocouple; Ungrounded

WHTCKG High Temperature K-Type Thermocouple; GroundedWHTCKU High Temperature K-Type Thermocouple; Ungrounded

Specifications and information subject to change without notice. Printed in U.S.A.

Select one from each category to order a Sensor Kit:

SEN3 CL36 D25 S316 WSPT104 [SEN]

Accessories

Spare Parts Kit includes:Three (3) Spare Springs; Three (3) Clips;Three (3) Caps; Three (3) 1" Spacers; andThree (3) 2" Spacers

Combination Pliers/Wire Stripper facilitatesinstallation of the WORM components andsensor connection

231-849-00

802-179-24

Part Number Description

Sensor SpecificationsLead Wire Materials: Standard (WS) Sensors: Teflon insulated,hermetically sealed; High Temperature (WH) Sensors: BraidedfiberglassSensor Sheath Material: Stainless Steel 316Accuracy: RTD: ±0.12% at 0°C. Consult the factory for thermo-couple tolerancesStability: RTD: 0.2°C after 10,000 hrs. at maximumtemperature (1 year, 51 days, 16 hrs. continuous)Response Time: RTD: <5 seconds to 63.2% temperature change;Thermocouple, 4.5 sec. for ungrounded, typical; 2.0 sec. forgrounded to 63.2% temperature changeHumidity: Standard (WS) sensors: Excellent moisture resistancefor condensing environments; High Temperature (WH) sensors:Specify for non-condensing atmospheresPull Force: Wires will withstand at least 20 lbs. of pull force beforeseparating from sensor head

Model Number Example:SEN3 / CL36 / D25 / S316 / WSPT104 [SEN]

IMPORTANT NOTE

Specify Standard (WSWSWSWSWS)sensors for measurementsup to 205°C (400°F).

Specify High Temperature(WHWHWHWHWH) sensors formeasurements up to 590°C(1100°F).

See "Sensor Specifications"for additional information.

–

Red

Red

Type

J

K

+

White

Yellow

T/C IDENTIFICATION

Wire Color