There are some advantages of thermocouple which are given below.
- The thermocouple is less expensive than RTD.
- It has wide temperature ranges.
- It has good reproducibility.
- The temperature range is 270 to 2700 degree Celsius.
- It has rugged construction.
- It does not required bridge circuit.
- It has good accuracy.
- It has high speed of response.
There are some disadvantages of thermocouple which are given below.
- The stray voltage pick up is possible.
- As output voltage is very small, it needs amplification.
- The cold junction and lead compensation is essential.
- It shows non linearity.