How to choose the correct RTD sensor?


When choosing an RTD, you must consider the following:

• What are you measuring the temperature of (a surface or immersed in solid,liquid or gas)?

• If it is essential to have a fast response time or not, to learn the various factors of choosing a response time read more on our RTD technical page.

• The specific sizes required to fit your application e.g probe diameter, probe length, compression fittings, type of connector required etc.

• Do you require a specific sheath material?

• Do you need your sensor calibrated?

• Will the sensor need to be resistant to chemicals/abrasion/vibration or any other environmental considerations?

• Is there high emf (electromagnetic interference) potential from power switching, rectification, or radio waves?

• Any other installation considerations? (e.g does the sensor need to be bent in to shape before installation)

• Distance between the sensing area and the instrumentation

• Temperature in the sensing environment across the length of the sensor

• Connection preferences

• Current wiring configuration e.g. a 4 wire sensor won’t be compatible with a 3 wire configuration