May I ask?
Thread Content
May I ask what kind of thermometer is used to measure the temperature of the liquid flowing inside the pipeline (which is at high temperature and pressure), and what is the principle behind it?
The temperature element is inserted into the pipeline; or some differential pressure flowmeters are equipped with an integrated temperature element for temperature measurement
Generally, they are thermocouples, thermal resistors, and bimetallic thermometers. Answer completed, please leave a positive review.
It depends on the temperature and pressure; generally, when it’s above 500 degrees, a thermocouple is the better choice for measurement
Thermocouples, thermal resistors – both are fine
For surface use, bimetallic thermometers are more common; for remote monitoring, thermocouples and thermal resistors are used. Of course, the appropriate type must be chosen depending on the temperature level~~
In special cases, surface thermocouples may also be considered, fixed to the wall so that the pipes do not develop openings. @jiaguoyun
This refers to the thermocouples and thermal resistors mentioned in the previous replies; in practice, bimetallic elements are used. These are the commonly adopted options. Thermocouples come in types such as K, S, E, etc., each suited for different optimal measurement ranges. Thermal resistors include types like PT100 and CU50, and the choice depends on the temperature range you need to measure. As for pressure, it doesn’t matter as long as the sleeve of the thermometer is standard enough