What are the differences between thermocouples, temperature gauges, temperature measurements, and thermal resistance measurements?
First of all, the basic principle is different, thermocouple and thermal resistance, temperature instruments are temperature measurement in contact type temperature measurement, although the same role is to measure the temperature of the object, but their principles and characteristics are not the same
Thermocouple: the main characteristic is wide measuring range, stable performance, simple structure, good dynamic response, more capable of remote transmission of 4-20mA electrical signals, easy to automatic control and centralized control
The thermocouple is based on the thermoelectric effectThe electric signal of a thermocouple requires a special wire to carry it. This wire is called a compensating wireHeat resistance: the main characteristics of the measuring range of his application is subject to certain restrictions, but can remote signal, high sensitivity, strong stability, accuracy and interchangeability are better, but the need for power motivation, can not change the instantaneous temperature measurement.The principle of temperature measurement of thermal resistance is based on the change of resistance value of conductor or semiconductor with the change of temperatureI hope I can help you!
