What are the advantages and disadvantages of thermocouple temperature sensor

With the advent of the science and technology era, there are more and more places to use the sensor. What we talk about today is that the hotspot sensor is a type of temperature sensor, and it is also the one that uses more in the current sensor. We all know that the thermocouple sensor has advantages, and there are certain disadvantages, so do you know what the advantages and disadvantages of the thermocouple temperature sensor are you? Next, what are the advantages and disadvantages of thermocouple temperature sensor .
Advantages and disadvantages of thermocouple temperature sensor

First, the advantages of using the thermocouple 1. The temperature range is wide: from low temperature to jet engine exhaust gas, thermocouple is suitable for most actual temperature range. The temperature range of thermocouple measurement is between –200 ° C and 2500 ° C, depending on the metal wire used.

2. Strong durability: Thermocouple is a durable device, which has good impact vibration, and is suitable for dangerous and harsh environments. 3. Fast response: Because of their small volume, low thermal capacity, the thermocouples respond fast to temperature changes, especially when the inductive joint point is exposed. They respond to temperature changes in hundreds of milliseconds. 4. No spontaneous heating: Because the thermocouple does not need to motivate power, it is not easy to spontaneously heat, it is safe.

2. Disadvantages of using thermocouple
1. Low accuracy: In addition to the inherent inacular inaccurate internal and inaccurate due to the metal characteristics,

2. The signal conditioning is complicated: converting thermocouple voltage into the available temperature readings must be regulated by a large number of signal conditioning. For a long time, signal conditioning consumes a lot of design time. Improper processing will introduce errors, resulting in a decrease in accuracy.
The measurement accuracy of thermocouple can only achieve the measurement accuracy of the reference joint temperature, generally in 1 ° C to 2 ° C.
3. Poor noise anti -noise: When the millival -level signal changes, the noise generated by the messy electric field and the magnetic field may cause problems.
4. Evil corrosion: Because the thermocouple is composed of two different metals, the corrosion may reduce accuracy over time under some working conditions. Therefore, they may need to be protected; and maintenance and maintenance are essential.