To begin with, any temperature probe (such as the CHT probe), is a thermocouple type probe.

For the uninitiated, a thermocouple is formed at the joint between two metals. When the joint is heated, a very small voltage measured in millivolts is generated. Higher the temperature, higher the voltage. Also, each metal combination is best suited for a specific temperature range. The type of thermocouple indicates the metal combination. Three types of thermocouple probes are used in aviation EGT, CHT and TIT.

Types of CHT probes:

There are three basic types of CHT probes; J, K and E

J-type CHT Probes are very s ... Read more »