Product and Ordering Information

Table A

Figure 1

RTD Assembly without

Process Fitting

Figure 4

Spring-Loaded RTD

Assembly with 1/2″ NPT

Pipe Nipple Extension

Terminal Head Connected RTD Assemblies 1 | Thermo Sensors Terminal Head Connected RTD Assemblies 2 | Thermo Sensors
Figure 2

RTD Assembly with

1/2″ NPT Process Fitting

Figure 5

Spring-Loaded RTD

Assembly with 1/2″ NPT

Hex Fitting/Union

Nipple Extension

Terminal Head Connected RTD Assemblies 3 | Thermo Sensors Terminal Head Connected RTD Assemblies 4 | Thermo Sensors
Figure 3

Spring-Loaded RTD

Assembly with 1/2″ NPT

Process Fitting

Figure 6

Spring-Loaded RTD

Assembly with 1/2″ NPT

Nipple/Union/Nipple Extension

Terminal Head Connected RTD Assemblies 5 | Thermo Sensors Terminal Head Connected RTD Assemblies 6 | Thermo Sensors

* For custom extension length, add desired length as suffix to basic order code. Variable lengths only available in figure 4, 5 and 6

Example: 5046, for 6″ long extension.

** Fitting/Extension shown in figures 1, 2, 3, & 5 only available in stainless steel.

– If connection head is not required, simply insert figure number as basic order code Example: 3

How to Order

Pgs. 6-8    Page 9         Page 10    TW Section
Basic
Order Code

104

Table A

Sensor
Diameter

4

Table B

Element

A

Table C

Tolerance

1

Table D

Temp.
Range

B

Table E

Sheath
Mate

1

Table F

Lead
Conn.

C

Table G

“L”
Length

12

Table H

Options

2AS

Table I

Order Code for
Thermowell

If required
(see Thermowell
section)

Type of Head Head Material Basic Order Code
Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Terminal Head Connected RTD Assemblies 7 | Thermo Sensors

Industrial

Weatherproof

Screw Cover Head

Cast Aluminum 100 200 300 400 500 600

Terminal Head Connected RTD Assemblies 8 | Thermo Sensors

Epoxy Coated

Weatherproof

Screw Cover Head

Cast Iron 102 202 302 402 502 602

Terminal Head Connected RTD Assemblies 9 | Thermo Sensors

General Purpose

Weatherproof

Screw Cover Head

For Flip Top Style, add suffix “F” to basic order code

Cast Aluminum 104 204 304 404 504 604

Terminal Head Connected RTD Assemblies 10 | Thermo Sensors

Corrosion Resistant

Weatherproof Screw

Cover Head

For Flip Top Style, add suffix “F” to basic order code

Nylon 106 206 306 406 506 606

Terminal Head Connected RTD Assemblies 11 | Thermo Sensors

CSA / ATEX / FM Approved Explosion Proof

Head meets NEC Class I

Div I Groups B, C, D

Class II Div I, Groups E, F, G

NEMA 4X, 7, 9,

II2G, Ex d, IIC, Gb,

II2 D, Ex tb, IIIC Db, IECEx

Cast Aluminum 108 208 308 408 508 608
316 Stainless Steel 110 210 310 410 510 610

RTD Assembly Specifications

Table B (sensor diameter)

Sensor Diameter Order Code
1/8″ (.125″) 2
3/16″ (.188″) 3
1/4″ (.250″)STD 4
5/16″ (.312″) 5
3/8″ (.375″) 6

 

Table C (element)

Resistance

0°C

Material Temperature Coefficient/Alpha (a) Order Code
Single Element Dual Element
100Ω Platinum .00385Ω/Ω°C A 2A
100Ω Platinum .003916Ω/Ω°C B 2B
100Ω Platinum .003902Ω/Ω°C C 2C

98.129Ω

(100Ωnom-)

Platinum

Sama Standard

RC21-4-1966

.00392Ω/Ω°C D 2D
120Ω Nickel .00672Ω/Ω°C E 2E
9.035Ω Copper .00427Ω/Ω°C F 2F

 

Table D (tolerance)

Accuracy at 0°C Order Code
± .12% Class B 1
± .06% Class A 2
± .03% Lab Grade 3
± .02% Lab Grade 4
± .01% Lab Grade 5

 

Table E (temperature range)

Temperature Range Order Code

-50 to +250 Deg. C

-58 to +482 Deg. F

A

-50 to +400 Deg. C

-58 to +752 Deg. F

B

-50 to +660 Deg. C

-58 to +1220 Deg. F

C

 

Table F (sheath material)

Sheath Material Order Code
316 SS 1
Alloy 600 2
Alloy C-276 3

 

Table G (lead connection)

2-Wire Order Code A
Terminal Head Connected RTD Assemblies 12 | Thermo Sensors
3-Wire Order Code B
Terminal Head Connected RTD Assemblies 13 | Thermo Sensors
4-Wire Order Code C
Terminal Head Connected RTD Assemblies 14 | Thermo Sensors

 

Table H (length)

Specify “L” in Inches

Length Not required when Thermowell is used.

 

Optional Connections

(For extended lead types)

Table I (options)

  Description Order Code
Terminal Head Connected RTD Assemblies 15 | Thermo Sensors Spade Lugs for #8 Screw L
Terminal Head Connected RTD Assemblies 16 | Thermo Sensors Male Plug M

The connectors shown are for 3-wire single element assemblies.

Two – 2 Pin connectors mounted in tandem will be furnished for both styles of 4-wire single element assemblies.

Dual element assemblies will have the same connector arrangements except Doubled.

Terminal Head Connected RTD Assemblies 17 | Thermo Sensors
Female Jack F
Terminal Head Connected RTD Assemblies 18 | Thermo Sensors Watertight connector 1/2″ NPT W1
3/4″ NPT W3
Terminal Head Connected RTD Assemblies 19 | Thermo Sensors Watertight connector with lugs for #8 screws 1/2″ NPT WL1
3/4″ NPT WL3

 

Optional Mounting Fittings
Description NPT Order Code
Terminal Head Connected RTD Assemblies 20 | Thermo Sensors 1/8″ 1AS
1/4″ 2AS
3/8″ 3AS
1/2″ 4AS
3/4″ 6AS

For FEP readjustable insert, replace “A” with “R”

Example: 4RS

   

 

Optional Spring-Loaded Devices
Description Order Code

Terminal Head Connected RTD Assemblies 21 | Thermo Sensors

Adjustable Spring

FP 275

Terminal Head Connected RTD Assemblies 22 | Thermo Sensors

1/2″ NPT Double threaded adjustable hex bushing

FP 240

Terminal Head Connected RTD Assemblies 23 | Thermo Sensors

1/2″ NPT single threaded adjustable hex bushing

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