How to choose the right thermocouple based on temperature?

Thermocouple is a commonly used temperature measuring element in temperature measuring instruments. It directly measures the temperature and converts the temperature signal into a thermoelectromotive force signal. They are a widely used temperature sensor for measurement and control, and can also be used to convert temperature gradients into electrical energy.

 

So how to choose a suitable thermocouple from the measurement accuracy and temperature range? Check it out today.

 

1. The working temperature is 1300~1800℃. When the precision is higher, the B-type thermocouple is generally used.

 

2. The accuracy is not high, and the atmosphere allows the use of tungsten-rhenium thermocouples. Above 1800°C, tungsten-rhenium thermocouples are generally used.

 

3. The operating temperature is 1000~1300℃, and high precision is required. The available S-type thermocouple and N-type thermocouple are relatively high.

 

4. K-type thermocouples and N-type thermocouples are generally used below 1000 °C.

5. E-type thermocouples are generally used below 400°C.

 

6. The T-type galvanic couple is generally used for measurement at a negative temperature of 250 °C. T-type thermocouples are stable at low temperatures and have high precision.