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Fenwal Thermoswitch Controllers
Protective Thermo Wells
Fenwal 34-011100-002 Aluminum Surface Mounting Thermowell
The Fenwal Thermoswitch Protective Thermowells are for use with Series 17000 Thermoswitch Controllers. In many applications involving the control of liquids and gases, the use of a well is recommended.

When the removal of a Hex or Coupling Head Thermoswitch controller would require draining of the container in which it is inserted, the use of a well assembly permits removal of the controller without other disturbances.

When surrounding ambients are subject to extreme changes thus affecting Thermoswitch control, the well makes it possible to insert the Thermoswitch controller completely into the medium being controlled thereby eliminating these ambient temperature effects or "head effect."

A well also offers protection in applications where fluids have a corrosive effect on the brass shell of the Thermoswitch controller. Certain gases or liquids (including water at elevated temperatures) could be corrosive and/or cause electrolytic action, which could severely shorten the life of the controller. Where corrosion or electrolysis is suspect, the use of stainless steel heliarc welded thermowells or various platings or coatings may increase controller life.

In addition, use a thermowell to protect the Thermoswitch from external forces or blows which could damage it or affect its operation.

Specifications & Options:
  • Shell dimensions: Use with a 5/8" diameter Thermoswitch Controller
  • Pressure Ratings:
    • 100 p.s.i. at -100ºF to +250ºF
    • 60 p.s.i. at +600ºF
  • Approximate Weight: 4 to 5 ounces

Download Fenwal Thermowell Datasheet (pdf )

Part No. Specifications Description Applicable
Well & Head
Price Order Quantity
34-011201-000 Fenwal Hex Head Thermowell Series 170XX 321SS $245.00   Enter qty:  
34-011204-000 Fenwal Coupling Head Thermowell Series 170XX 321SS $358.00   Enter qty:  
34-011100-002 Fenwal Aluminum Surface Mounting Thermowell Series 170XX Aluminum $196.00   Enter qty:  
(Explosion Proof)

Fenwal Hazardous Location Thermowell Series 170XX 321SS $917.00   Enter qty:  
Items ship in 2-4 weeks, FOB: Inglewood, CA.
This page last modified on 12/29/2016
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