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Temperature sensor classification and analysis of advantages /disadvantages

2020-06-08

Temperature sensor classification and analysis of advantages /disadvantages 1

Temperature sensor classification and analysis of advantages /disadvantages 2

The temperature sensor is an indispensable and important component when engineers design certain high-precision electronic products. At present, there are three main types of temperature sensor products on the market, which are resistance temperature detector (RTD), thermocouple and thermistor. In the actual application process, these three temperature sensor products have their own advantages and differences. In today's article, we will discuss together-the advantages and disadvantages of each sensor above, let's take a look.

Item	advantage	Disadvantage
Thermocouple	1. Can measure the temperature of a small part 2. Can shorten the lag time 3. Vibration resistance 4. wide measurement range	1. Requires standard contact points 2. There is an error between the standard contact point and the compensation wire 3. At room temperature, it is difficult to obtain higher accuracy without correction
Temperature resistance	1. Suitable for a wide range of average temperature 2. No need for standard contacts 3.Compared with thermocouples, the accuracy is higher at room temperature	1. It is difficult to shorten the lag time 2. Damage may occur in a place with severe vibration 3. Affected by the resistance of the wire, it needs to be corrected
Thermistor	1. Can measure the temperature of a small part 2. Can shorten the lag time 3. High sensitivity 4. Best for measuring tiny temperature differences Simple structure and low price	1. Due to the serious linearity between resistance and temperature, linear treatment is sometimes required 2. Sometimes need to exchange resistance 3.Vibration occasions may cause damage