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Thermocouple with Connector Thermocouple with Connector

A thermocouple is a sensor for measuring temperature. It consists of two dissimilar metals joined together at one end. There are many types of thermocouples, type J, K, T, & E are the most common types (Base Metal), and type R, S, and B thermocouples are used in high temperature applications (Nobal Metal).

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  • Options
  • Thermocouple Types
  • Thermocouple Extension Wires
  • Features & Selection Guide
  • More Possibilitys


SHEATH MATERIAL

SUS304 

SUS316 - Excellent pitting corrosion resistance & crevice corrosion resistance, widely used in the chemical industry.

Inconel600 - Heat & corrosion resistant steel with strong stress and corrosion resistance, widely used in various heating components and petrochemical industry.


MOUNTING & FIXING 

A variety of mounting options including fixed or movable flange, fixed or movable thread, or without mounting fixing. 


JUNCTION STYLES & DETAILS

Grounded

  1. Good heat transfer from the outside to the thermocouple junction 

  2. Rapid response

  3. No suitable in case with electrical noise

Ungrounded

  1. Response time is slower than the grounded style

  2. Long service life

  3. Resistance to electrical noise

Exposed

  1. Rapid response

  2. Suitable to measure the temperature of gas

  3. Poor mechanical strength in contact with other measuring structures



Thermocouple Types and Temperature Range

Type

Wire Material

Temp. Range

Accuracy

+

-

K

Nickel-Chromium

Nickel-Alumel

-200~1000°C

+/- 2.2°C or +/- .75%

J

Iron

Constantan

0~600°C

+/- 2.2°C or +/- .75%

T

Copper

Constantan

-200~300°C

+/- 1.0°C or +/- .75%

E

Nickel-Chromium

Constantan

-200~700°C

+/- 1.7°C or +/- 0.5%

N

Nicrosil

Nisil

-200~1200°C

+/- 2.2°C or +/- .75%

R

Platinum Rhodium – 13%

Platinum

0~1400°C

+/- 1.5°C or +/- .25%

S

Platinum Rhodium – 10%

Platinum

0~1400°C

+/- 1.5°C or +/- .25%

B

Platinum Rhodium – 30%

Platinum Rhodium – 6%

0~1500°C

+/- 0.5%


What is thermocouple extension wire?


Thermocouple extension wire is used to extend from the thermocouple probe to the control system or digital display especially when long distance involved. It is less expensive and lower grade than thermocouple wire.


Thermocouple 

Type

Extension Wire 

Type

Wire Material

 Temp. Rang

(℃)

Tolerance (µV)
+- Class 1  Class 2 
KKX Nickel-chrome  Nickel-silicon -25~200±60±100
KCANickel-chromeNickel-silicon0~150-±100
KCBIronCopper-nickel0~150±100
KCCCopperCopper-nickel0~100±100
EEXNickel-chromeCopper-nickel-25~200±120±200
JJXIronCopper-nickel-25~200±85±140
TTXCopperCopper-nickel-25~100±30±60
NNXNickel-chromeNickel-silicon-25~200±60±100
NCCopper-nickelCopper-nickel0~150±100
RRCACopperCopper-nickel0~100±30
RCBCopperCopper-nickel0~200±60
BBCCopperCopper0~100
SSCACopperCopper-nickel0~100±30
SCBCopperCopper-nickel0~200±60



Features

1. Cost effective 

2. Small in size

3. Robust

4. Wide range of operation

5. Accurate for large temperature changes

6. Fast response

7. Wide temperature capabilities            

How to choose 

Please provide the following information:

1. What’s the application

2. Type of the thermocouple (K/J/T/E/N/R/S/B)

3. Diameter and length of probe

4. Installation requirements (thread or flange size)

5. Temperature range

6. Chemical resistance of the thermocouple or sheath material




Reheatek thermocouple


Reheatek thermocouple


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