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SIT Thermocouple  - Mendota Thermocouple and Robertshaw Thermocouple 
To determine which thermocouple would be used in your Gas stove you would need to get the manufacture's name and model number off the gas stove or log set. Another way that you might be able to determine the thermocouple replacement is on the copper section toward the silver end that goes into the pilot assembly, there is a press down section that sometimes has the manufacturer's replacement number. For example SIT puts their number on their thermocouple, we would need the last seven digits. (See picture below)

The basic thermocouple principle is a thermocouple consists of two different metals, such as copper and steel, welded together at one end. The point at which the two metals are welded is called the hot junction, and the other end of the two metals is called the cold junction. When a flame is applied to the hot junction area, and it is heated to a higher temperature than the cold junction, a small electrical charge is generated. This charge, generated by heating the two dissimilar metals, is expressed in millivolts.


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Mendota ThermocouplesSIT ThermocouplesRobertshaw Thermocouples 
Mendota Thermocouples SIT Thermocouples Robertshaw Thermocouples  
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