How to test a Thermocouple

 

Thermocouples have different lifespans dependant on many factors including: operating temperature, exposure to gas/liquid/chemicals, vibration, type/construction of the Thermocouple. You can easily test a Thermocouple yourself, all you need is a Thermocouple and a multimeter.

The below table shows temperature ranges for the different types of thermocouples, it is also useful for identifying the type of thermocouple you have, based off the colour.

Thermocouple Colour Chart

 

Step 1 

Remove the Thermocouple from the instrumentation

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