RTDs

Product and Ordering Information

Terminal Head Connected RTD Assemblies

Table A

Figure 1 RTD Assembly without
Process Fitting
Figure 4 Spring-Loaded RTD
Assembly with 1/2" NPT
Pipe Nipple Extension
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
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

* 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

Industrial
Weatherproof
Screw Cover Head
Cast Aluminum 100 200 300 400 500 600

Epoxy Coated
Weatherproof
Screw Cover Head
Cast Iron 102 202 302 402 502 602

General Purpose
Weatherproof
Screw Cover Head
For Flip Top Style, add sufix “F” to basic order code
Cast Aluminum 104 204 304 404 504 604

Corrosion Resistant
Weatherproof Screw
Cover Head
For Flip Top Style, add sufix “F” to basic order code
Nylon 106 206 306 406 506 606

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
3-Wire Order Code B
4-Wire Order Code C

 

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
Spade Lugs for #8 Screw L
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.
Female Jack F
Watertight connector 1/2" NPT W1
3/4" NPT W3
Watertight connector with lugs for #8 screws 1/2" NPT WL1
3/4" NPT WL3

 

Optional Mounting Fittings
Description NPT Order Code
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

Adjustable Spring
FP 275

1/2" NPT Double threaded adjustable hex bushing
FP 240

1/2" NPT single threaded adjustable hex bushing
SSL