What types of primary elements are used to measure the compressor bearing temperature? Give example with the equipment name

Instrumentation Temperature
1

At lower range of temperature ‘RTD’ (resistance temperature detector)is preferred to thermo-couples.

On dresser gas compressors: PT 100-RTD is used for measuring the journal and thrust bearing temperature.

On solar gas compressors: ‘k’ type thermo-couple is used for measuring the journal and thrust bearing temperature.