Appropriate thermocouple in measuring superheated steam

[onlynishant16]

i want to know which type of thermocouple is used in measuring superheated steam temperature coming out of boiler? this temp sensor is used in accordance with desuperheater to reduce the temperature of excessive superheated steam...

can u provide with its range, accuracy, and resolution

 

[dlgoff]

You might want to check this site to see if they have the specs you need.

http://www.omega.com/toc_asp/sectionSC.asp?book=temperature&section=h

 

[ravenprp]

There are a few different types of thermocouples that can be used for measuring the temperature of superheated steam. The most common types are Type K, Type N, and Type R. Each type has its own specific range, accuracy, and resolution, so the choice will depend on the specific application and requirements.

Type K thermocouples are the most commonly used for measuring superheated steam, as they have a wide temperature range of -200 °C to 1260 °C and high accuracy of ±1.5 °C or ±0.4%. They also have a high resolution of 0.1 °C.

Type N thermocouples have a slightly narrower temperature range of -270 °C to 1300 °C, but offer better accuracy of ±1.1 °C or ±0.4%. They also have a resolution of 0.1 °C.

Type R thermocouples have the narrowest temperature range of all three types, from 0 °C to 1600 °C, but offer the highest accuracy of ±0.25 °C or ±0.25%. They also have a resolution of 0.1 °C.

In terms of using the thermocouple with a desuperheater, it is important to ensure that the thermocouple is able to withstand the high temperatures and steam pressure. It is also important to regularly calibrate the thermocouple to maintain accuracy. Overall, the specific type of thermocouple used will depend on the specific requirements of the application.