Hermetically Sealed Differential Pressure Switches

SOR hermetically sealed differential pressure switch models feature weatherproof and explosion proof protection. The switching capsule isolates the contacts from moisture and corrosive environments and virtually eliminates problems associated with these conditions. They are ideal for a variety of applications because the electrical switching elements are hermetically sealed in a steel capsule that is certified through global agency listings as an explosion proof snap switch. The highest level of explosion proof rating is standard.

Big Hermet – Hermetically Sealed Differential Pressure Switch
Models: Big Hermet
Ranges: 3 to 500 psid
Certifications: Unit: INMETRO, SIL, UL/CSA; Snap Switch: UL/CSA, TestSafe (SAA)
Warranty: 3 Years
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High Static Operation – Hermetically Sealed Differential Pressure Switch
Models: 102AD, 103AD
Ranges: 7 in wcd to 2500 psid, 18 mbar to 175 bar
Certifications: Unit: ATEX, GOST, INMETRO, RTN, SIL; Snap Switch: ATEX, UL/CSA, TestSafe (SAA)
Warranty: 3 Years
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Low Range – Hermetically Sealed Differential Pressure Switch
Models: 107EL
Ranges: 0 to 40 in wcd, 0 to 1000 mm wcd
Certifications: Unit: FM, RTN, SIL;
Snap Switch: ATEX, TestSafe (SAA), UL/CSA
Warranty: 3 Years
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Mini-Hermet – Hermetically Sealed Differential Pressure Switch
Models: Mini-Hermet
Ranges: 3 to 500 psid
Certifications: Unit: ATEX, GOST, SIL, UL/CSA;
Snap Switch: ATEX, TestSafe (SAA), UL/CSA
Warranty: 3 Years
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Built tough for a long working life

  • Stainless steel switch capsule standard
  • Aluminum, stainless steel and cast iron housings available
  • Precise quality standards from raw materials to finished switch

Wide range of standard models

  • SOR has a hermetically sealed differential pressure switch to fit a wide variety of applications where protection from the elements or corrosive environments is vital to your process

Safety certified to IEC 61508 (SIL)

  • Most models meet requirements for non-redundant use in SIL1 and SIL2  Safety Instrumented Systems

Engineered to your specifications

  • Every SOR hermetically sealed pressure switch can be custom made to your exact specifications – talk to a factory Sales Engineer or your local Representative

Simple to use and economical

  • Installs easily without the need for special tools
  • Switch does not need to be decommissioned to calibrate set points
  • Calibration adjustment is self-locking
  • No charge for factory calibration
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