The SOR Big Hermet Explosion Proof Temperature Switch is a hermetically sealed temperature snap switch designed for temperature sensing and switching in harsh process environments.
It uses a vapor-pressure thermal system to sense temperature changes and activate or deactivate a diaphragm/piston assembly.
Process Controls Corporation supplies SOR Big Hermet temperature switches for industrial customers that need a mechanical temperature switch option with calibrated set point adjustment, hermetically sealed snap switch construction, and temperature ranges from -60° to 1000°F.

Key Characteristics
- Hermetically sealed snap switch construction
- Vapor-pressure thermal system design
- Temperature ranges from -60° to 1000°F (-51° to 540°C)
- Set point adjustment with calibrated scale
- Set point adjustment without declassification of the hazardous area
- Unit SIL2 certification
- Snap Switch certifications include TestSafe (SAA) and UL/CSA
Ideal Applications
- Temperature sensing in harsh process environments
- Applications requiring temperature snap switch operation
- Process media applications requiring a hermetically sealed temperature switch
- Installations where calibrated set point adjustment is needed
- Applications requiring set point adjustment without declassification of the hazardous area
Product Family Includes
- Big Hermet model temperature switches
- Hermetically sealed temperature switch configurations
- Temperature switch options for ranges from -60° to 1000°F
- Temperature switches with calibrated set point adjustment
- Temperature switches with SIL2 unit certification
Industries Served
- Oil & Gas
- Chemical Processing
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