Contact Us Locate Us
linkedin youtube
  • Skip to primary navigation
  • Skip to main content
Tsc Logo Rgb - Thermo Sensors Corporation

Thermo Sensors Corporation

  • Products
    • Mega Menu Wrap
      • Column 1
        • Thermocouples
          • MGO Thermocouples
          • Industrial Thermocouples
            • Ceramic Protection Tube Assemblies
            • Metal Protection Tube Assemblies
            • Standard Industrial Thermocouples
          • Tube Skin Thermocouples
          • Multipoint Thermocouples
      • Column 2
        • Resistance Temperature Detectors (RTDs)
          • Introduction to RTDs
          • Standard RTD Assemblies
          • RTDs For The Plastics Industry
      • Column 3
        • Thermowells
          • Introduction to Thermowells
          • Thermowell Types
          • Thermowell Sizing Support
      • Column 4
        • Accessories
        • Wiring
  • Resources
    • Case Studies
    • Reliatemp Brochure
    • Furnace Solutions
  • Field Service
    • Tube Skin Installation Services
  • About Us
    • Gallery
  • Contact
Home/Resistance Temperature Detectors (RTDs)/Direct Immersion/Replacement RTD Assemblies

Direct Immersion/Replacement RTD Assemblies

Table A (cont.)

Figure 14 Figure 15 Figure 16
Figure 17 Figure 18
Basic Order Code
Fig. 14 Fig. 15 Fig. 16 Fig. 17 Fig. 18
M

w/o mating female

MF

w/ mating female

B SB BS(A) SBS

How to Order

Pgs. 6-8  – Page 9  –  – Page 10
Basic
Order CodeSBTable A
Sensor
Diameter4Table B
Element

A

Table C

Tolerance

1

Table D

Temp. Range

A

Table E

Sheath
Material1Table F
Lead
Conn.BTable G
“L”
Length6Table H
Options

L

Table I

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

RTDs

    General

  • Introduction to RTDs
  • Application and Technical Data
  • Resistance vs. Temperature Tables
  • Detector Tolerance Chart
  • Product and Ordering Information

Standard RTD Assemblies

  • Terminal Head Connected RTD Assemblies
  • Extended Lead RTD Assemblies
  • Direct Immersion/Replacement RTD Assemblies

RTDs for Plastics Industry

  • RTDs For The Plastics Industry
  • Bayonet Assemblies
  • Nozzle and Immersion Bolt Assemblies
  • Extension Assemblies
Request a Quote Request Help
Tsc Logo Rgb - Thermo Sensors Corporation
  • Contact
  • About Us
  • Resources
  • Products

Copyright © 2026 Thermo Sensors Corporation|
Privacy Policy
|
Website & Marketing by RWM