Thermal resistance can be mainly divided into ordinary type thermal resistance,sheathed thermal resistance, face thermal resistance, and flameproof thermal resistance.
According to the measuring principle of thermal resistance, the change of the measured temperature will be directly shown by the change of the thermoelectric resistance, and the temperature variation of thermal resistance body’s leading wire and other wire resistance will make difference on the measurement. The common type of heat resistance is usually used for general measurement. Andsheathed thermal resistanceis composed of a temperature sensing element (resistor), leading wire, insulation material, and the stainless steel sleeve. Its outer diameter is generally around Phi 2-- phi 8mm. The temperature sensor of thermal resistance is composed of a kind of resistor wire with special treatment, which is close to the thermometer in the end. So it can more correctly and quickly reflect the actual measured temperature of the end face, suitable for measurement of bearing and other parts. Explosion isolation type thermal resistance can be used for temperature measurement with explosion hazardous areas zone of Bla--B3c grade.