Hermetically Sealed Pressure Switch

      SOR hermetically sealed pressure switch feature a sealed stainless steel capsule that isolates the switching mechanism from the elements and corrosive, environments or atmospheres. They virtually eliminate problems associated with these types of conditions.

      Long working life

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

      Wide range of standard models

      • SOR has a hermetically sealed switch to fit most any application where protection from the elements or corrosive environments is vital to your process
      • All models are weatherproof and explosion proof

      Safety Certified to IEC 61508 (SIL)

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

      Custom engineered to your specifications

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

      Simple to use

      • Easy to install and calibrate – no special tools required
      • Free factory calibration
      • Self-locking set point adjustmen

      Big Hermet – Explosion Proof, Hermetically Sealed, Pressure Switch

      Big Hermet – Explosion Proof, Hermetically Sealed, Pressure Switch

      Models: Big Hermet
      Ranges: 30 in Hg VAC to 7000 psi, 1 bar VAC to 480 bar
      Certifications: Unit: RTN, SIL, UL/CSA; Snap Switch: UL/CSA, TestSafe (SAA)
      Warranty: 3 Years

      The SOR hermetically sealed Big Hermet explosion proof pressure switch is designed for mounting in a panel or on the wall when easy access is important. The pressure sensing assembly of the Big Hermet is identical to a conventional static o-ring type switch with the exception that the switching element assembly is hermetically sealed in a steel capsule. This versatile pressure snap switch works in a wide variety of environments and industrial applications and is available with the maximum explosion proof rating.

      • Hermetically sealed snap switches
      • Ranges from 30 in Hg vacuum to 7000 psi
      • Set point adjustment without declassification of hazardous area
      • Worldwide agency listings

      Datasheet

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      Dual Hi-Lo – Hermetically Sealed Pressure Switch

      Dual Hi-Lo – Hermetically Sealed Pressure Switch

      Models: V2
      Ranges: 30 in Hg VAC to 4000 psi, 1 bar VAC to 275 bar
      Certifications: Unit: CSA, RTN, SIL; Snap Switch: UL/CSA, ATEX, TestSafe (SAA)
      Warranty: 3 Years

      The SOR V2 pressure switch features two discrete sensing assemblies and 2 separate set points with 2 separate hermetically sealed switches in a single housing. It can be calibrated to the same actuation point or split to the full span of the adjustable range without interaction. It is ideal for use in hostile environments and an explosion proof rating is available.

      The Dual Hi-Lo V2 is popular for use in alarm systems configured to signal at a minimum and/or maximum pressure.

      • Hermetically sealed snap switches
      • Ranges from 30 in Hg vacuum to 4000 psi
      • Set point adjustment with calibrated scale
      • Set point adjustment without declassification of hazardous area

      Datasheet

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      Mini-Hermet – Hermetically Sealed Pressure/Compound Pressure Switch

      Mini-Hermet – Hermetically Sealed Pressure/Compound Pressure Switch

      Models: Mini-Hermet
      Ranges: 30 in Hg VAC to 7000 psi, 1 bar VAC to 480 bar
      Certifications: Unit: ATEX, GOST, INMETRO, RTN, SIL, UL/CSA; Snap Switch: ATEX, TestSafe (SAA), UL/CSA
      Warranty: 3 Years

      Like its big brother the Big Hermet, the sensing assembly of the Mini-Hermet pressure/compound pressure switch is based on the conventional Static “O” Ring® type that SOR pioneered in the industry more than 50 years ago. The pressure switching element assembly is hermetically sealed in a stainless steel capsule and the maximum explosion proof rating is provided.

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

      • Hermetically sealed snap switches
      • Ranges from 30 in Hg vacuum to 7000 psi
      • Set point adjustment without declassification of hazardous area
      • Worldwide agency listings

      Datasheet

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      Pivot Seal – Hermetically Sealed Pressure Switch

      Pivot Seal – Hermetically Sealed Pressure Switch

      Models: Various
      Ranges: 100 to 7000 psi (7 to 480 bar)
      Certifications: Unit: ATEX, UL/CSA, INMETRO, RTN, SIL; Snap Switch: ATEX, TestSafe (SAA), UL/CSA
      Warranty: 3 Years

      The explosion proof SOR hermetically sealed pivot seal pressure switch makes sense when plant conditions contain flammable/combustible gases, vapors or dust that dictate UL, CSA or ATEX certifications. (According to the National Electrical Code, the definition of an explosion proof apparatus is a device enclosed in a case that is capable of withstanding a gas or vapor explosion. This means that, should an explosion occur, it will be contained within an enclosure).

      The pressure-sensing element of the pivot seal pressure switch is a force-balanced, piston-actuated assembly sealed by an o-ring. As with all SOR pressure switches, the actual travel of the piston to actuate the micro switch is only several thousandths of an inch, resulting in minimal o-ring wear. Media pressure on the area of the piston counteracts the force of the range spring (adjustable by the adjusting nut screw) and moves the piston shaft and the force transmitter to directly actuate the electrical snap-action switching element.

      • Designed for fluid power or hydraulic services
      • Long lasting with minimal wear

      Datasheet

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      Sub Mini-Hermet – Hermetically Sealed, Explosion Proof Pressure Switch

      OEM Pressure Switches

      Sub Mini-Hermet – Hermetically Sealed, Explosion Proof Pressure Switch

      Models: Sub Mini-Hermet
      Ranges: 8 to 200 psi, 0.5 to 14 bar
      Certifications: Unit: RTN, SIL; Snap Switch: ATEX, TestSafe (SAA), UL/CSA
      Warranty: 3 Years

      Measuring approximately one-half the size of the standard Mini-Hermet, the Sub Mini-Hermet explosion proof switch is the perfect size for OEM skids and equipment with tight spaces.

      The Sub Mini-Hermet switch is available with adjustable set points or if you prefer to maintain the factory settings and not allow field adjustments, it can be configured for non-adjustable settings. (Field adjustable units may be externally adjusted without disconnecting electrical service). The SOR Sub Mini-Hermet switch is designed for use in hostile environments where space is at a premium.

      • Hermetically sealed snap switches
      • Ranges from 8 to 200 psi
      • Set point adjustment without declassification of hazardous area

      Datasheet

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      Certifying Agencies

      ATEX (certified by Baseefa, DEMKO, or KEMA)

      CE

      CSA

      FM

      GOST

      IECEx (certified by Baseefa or Standards Australia)

      INMETRO

      PESO (CCOE – India)

      TIIS

      KOSHA

      Rostechnadzor (RTN)

      SIL, TestSafe (SAA – Australia)

      SASO

      UL

      Available Listings

      Ordinary Locations and Hazardous Locations
      SIL Level Switch Certificate
      SIL Pressure Switch Certificate

      Available Hazardous Locations Protection Methods

      Explosion Proof/Flameproof (d)
      Intrinsic Safety (ia)
      Encapsulation (m)
      Special Protection (s)
      Combustible Dust (tD)
      Energy Limited (nL)

      Division 1, Division 2
      Class I, Class II, Class III
      Groups A-G

      IECEX
      saso
      INMETRO
      kosha
      gost
      PESO
      Testsafe
      atex-certification
      FM-Approval
      ul certification
      TIIS
      csa