Thermowells are used to provide an isolation between a temperature sensor and the environment, either liquid, gas or slurry. A thermowell allows the temperature sensor to be removed and replaced without compromising either the ambient region or the process.

Care must be taken in determining the material used for the thermowell as well as other factors.Thermo Sensors offers design assistance that includes pressure, temperature and or corrosion as well as vibration effects of the fluids. This vibration can cause well stem failure.

Thermo Sensors thermowell materials include:

  • Carbon Steel
  • 304 & 316 Stainless Steel
  • Monel
  • Brass

Please refer to our order guide to assist in determining your needs. We can also provide technical design assistance and application suggestions. Give us a call.


How to Select Thermowells
Velocity Ratings of Thermowells
Pressure/Temperature Ratings
Design Procedure
Thermowell Material Guide
Threaded Thermowells - Straight/Stepped
Threaded Thermowells - Tapered
Flanged Thermowells
Socket Weld Thermowells
Van Stone Thermowells
Limited Space / Weld-In Thermowells
Plug and Chain Options
Thermowell Material Ordering Codes
Ceramic Protecting Tubes
Metal Protecting Tube w/ Flange /
Cast Iron Protecting Tube
Metal Protecting Tubes /
Tubes with Bushings
Ceramic Protecting Tube Characteristics

Product and Ordering Information