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.

      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

      Big Hermet – Hermetically Sealed Differential Pressure Switch

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      Models: Big Hermet
      Ranges: 3 to 500 psid
      Certifications: Unit: INMETRO, SIL, UL/CSA; Snap Switch: UL/CSA, TestSafe (SAA)
      Warranty: 3 Years

      The SOR hermetically sealed, Big Hermet differential pressure switch is designed for mounting in a panel or on the wall when easy access is critical or you don’t want the switch right at the source of the pressure. This versatile differential pressure switch uses a switching element that is hermetically sealed in a steel capsule, making it perfect for a wide variety of applications.

      • Hermetically sealed snap switches
      • Ranges from 3 to 500 psid
      • Set point adjustment without declassification of hazardous area
      • Worldwide agency certifications

      Datasheet

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      High Static Operation – Hermetically Sealed Differential Pressure Switch

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      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

      These two models are well-suited for low-to-high differential pressure process or fluid power applications where high and varying static pressures, high overrange, proof, shock pressure or cycle rates are expected. They may be field-mounted and can be configured for use in non-hazardous as well as hazardous locations.

      • Negligible temperature and/or static influence
      • Hermetically sealed snap switches
      • Ranges from 7 in wc to 2500 psid
      • Set point adjustment without declassification of hazardous area
      • SPDT or DPDT switching elements

      Datasheet

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      Low Range – Hermetically Sealed Differential Pressure Switch

      DPS_107EL_1-300x300

      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

      Designed primarily for air and clean gas applications for low pressures, the hermetically sealed low range differential pressure switch accurately reads very low pressures in hazardous locations requiring protection. The 107EL employs a diaphragm with a large sensing area and is the perfect choice for pressurized (clean) room applications because it measures the difference between one room and another (air ducts) and lets you know if an air filter is clogged. An external set point adjustment with visual indication is standard, allowing for simplified calibration of the switch.

      • Hermetically sealed snap switches
      • Ranges from 0 to 40 in wcd
      • Set point adjustment without declassification of hazardous area
      • SPDT or DPDT switching element

      Datasheet

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      Mini-Hermet – Hermetically Sealed Differential Pressure Switch

      Mini-Hermet – Explosion Proof 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

      Versatile in a variety of locations where space is limited and a stainless steel enclosure is required to protect against moisture and/or corrosive damage, the hermetically sealed Mini-Hermet differential pressure switch is the product of choice. The sensing assembly of this differential pressure switch is based on the conventional Static “O” Ring type that SOR pioneered in the industry more than 5 decades ago. The switching element assembly is hermetically sealed in a stainless steel capsule and a maximum explosion proof rating is standard.

      The small, compact size of the SOR Mini-Hermet makes it extremely popular in offshore oil and gas fields because it doesn’t require much space on the skids.

      • Hermetically sealed snap switches
      • Ranges from 3 to 500 psid
      • Set point adjustment without declassification of hazardous area
      • Worldwide agency listings

      Datasheet

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      Drop us a line today for a free quote!