Gas Fireplace Thermocouple Vs Thermopile

It does this by generating a small electric current on the order of.

Gas fireplace thermocouple vs thermopile.

It generates about 750 mv that turns on the main gas valve to the fireplace. A thermocouple is heated by the pilot light but it. As the heat reaches the second junction of the thermocouple it generates electrical voltage. A thermopile generates electricity from the heat of a pilot light.

A thermocouple is a device consisting of two different metals joined together usually by welding or brazing the voltage between the metals is dependent on the temperature. The thermocouple on your gas fireplace is a heat sensitive device that keeps the pilot gas tube open while the pilot is lit. A thermopile is a series of thermocouples and are used typically when the difference in heat is hard to measure. It is typically more sensitive than a single thermocouple.

When turned on the pilot in a gas stove generates heat which travels through a thermocouple.