The difference of thermal resistance and thermal resistor1

Thermistors and thermocouples are a kind of temperature sensor, is a kind of measuring instrument. Thermocouple is composed of two different metal strings of closed circuit, thermal resistor is a kind of using semiconductor sensitive elements. Two as temperature sensor but also there is a certain difference between them, engineering today is for everyone to introduce what is the difference between thermal resistance and thermal resistance.

1, the signal of the nature of the

thermistor itself is resistance, resistance changes with the change of temperature ( Produce positive or negative resistance changes) 。 The thermocouple is with different temperature, the induced voltage is different also.

2, two different kinds of sensors to detect temperature range

thermistor general testing temperature range for the - 50 ℃ ~ 150 ℃ temperature range, so the thermistor only as a general low temperature detection; Detection of thermocouple temperature range of 0 ℃ ~ 2400 ℃, so the thermocouple is generally used in high temperature detection.

3, the difference of the material

thermistor is a kind of metal material, A temperature sensitive metal materials) 。 The thermocouple is double metal materials ( The two dissimilar metals) 。

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor