Thermowells

Useful Resources for Thermowells

Here are some useful technical links relating to thermowell design and applications. A seperate vendor’s page is available listing some of the many makers of thermowells around the world.

One of the most significant complications of thermowell design and use is the problem of vibrations and potential damage due to high velocity/high turbulent flow of even common fluids like steam or saturated air.

Our special page on Thermowell Wakes provides an insight into the problem along with some resources and free software downloads.

• What is a Thermowell?
  Principles of Operation.
• How to Select Thermowells
  Temperature Technical Information from Thermo Electric Direct.
• Enercorp’s
  Thermowell comments: thermowells will reduce the possibility of damage to the temperature sensor from corrosion, pressure or the flow of abrasive or viscous media.
• Corrosive Service Guide
  Thermowell Corrosive Service Guide from Tempco Electric-Includes Hydrobromic Acid, Hastalloy C etc.
• Fiber optic sensor application A Fiber optic sensor can be positioned outside the thermowell looking in, rather than being mounted inside the thermowell from Omega Engineering Product Applications.
• HTS Thermolet
  A simplified device developed by HTS engineers specifically for the installation of thermowells, annubars etc., from Team Industrial Services, Inc. – HTS Cross Line Stop
• A forum about Thermowells
  Discussions to share thermowell calculations by a software vendor.
• Thermowell Materials
• Thermowell Strength Calculation
  Downloadable PDF/Adobe Acrobat file from Rosemount.
• Thermowell Strength Calculation
  Downloadable PDF/Adobe Acrobat file
• Thermowell Resonance.
  Thermowells have been known to fail due to induced vibrations from the flow of gases going past it

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