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      Explosion Proof Temperature Switches

      SOR explosion proof temperature switches work on a proven, time-tested vapor pressure thermal system. Changes in fluid vapor pressure may be accurately predicted according to the influence of temperature on the switch’s sensing bulb. When the temperature in the process changes a proportional adjustment in the vapor pressure occurs in the sensing bulb. The change acts on the diaphragm/piston assembly to actuate/de-actuate an electrical, snap-action switching element at discrete process temperatures.

       

      Accurate and Long Lasting

      • Constructed of explosion proof materials
      • The switching capsule isolates switching elements from corrosive, hostile and hazardous environments

      Meets Explosion Proof Requirements

      • All units have earned agency listing approvals

      Engineered to Your Specifications

      • More specific application requirements to fit your needs can be met by customizing your temperature switch with optional components such as housings and electrical switching elements.

      Economical – Simple to Use – Convenient

      • Low cost and low cost of ownership
      • Simple installation – no special tools needed

      Big Hermet – Explosion Proof Temperature Switch

      Big Hermet – Explosion Proof Temperature Switch

      Models: Big Hermet
      Ranges: -50° to 1000°F, -45° to 540°C
      Certifications: Unit: INMETRO, RTN, SIL; Snap Switch: UL/CSA, TestSafe (SAA)
      Warranty: 3 Years

      The design of the SOR explosion proof, Big Hermet temperature switch is based on the time-tested vapor – pressure thermal system. Process temperature changes cause proportional vapor pressure changes in the sensing bulb that act on the diaphragm/piston assembly to actuate/deactuate an electrical switching element. This versatile, adjustable pressure snap switch works in a wide variety of process media and industrial applications.

      • Hermetically sealed snap switches
      • Ranges -500 to 10000F, -450 to 5400C
      • Set point adjustment with calibrated scale
      • Set point adjustment without declassification of hazardous area
      • Worldwide agency listings

      Datasheet

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      Direct or Remote Mount – Explosion Proof Temperature Switch

      Direct or Remote Mount – Explosion Proof Temperature Switch
      TS_L-A-Remote-Explosion-Proof-300x300

      Models: L, S, LC, SC, TA
      Ranges: -50° to 1000°F, -45° to 540°C
      Certifications: Unit: INMETRO, RTN, SIL, UL (as an outlet box)
      Warranty: 3 Years

      The adjustable SOR explosion proof temperature switch may be either direct or remotely mounted making it a versatile, “fits most applications,” instrument. It is designed and built to withstand the punishment of harsh process environments and is constructed of cast iron. It operates on the proven vapor-pressure thermal system and best of all, it’s low cost.

      • Ranges -500 to 10000F, -450 to 5400C
      • Set point adjustment with calibrated scale
      • SIL approved

      Datasheet

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      Direct or Remote Mount – Explosion Proof UL/CSA/ATEX Temperature Switch

      Direct or Remote Mount – Explosion Proof Temperature Switch

      Models: B3
      Ranges: -50° to 1000°F, -45° to 540°C
      Certifications: Unit: ATEX, CSA, GOST, INMETRO, RTN, SIL, UL
      Warranty: 3 Years

      The UL/CSA/ATEX B3 explosion proof, direct or remote mount temperature switch model is just like our L model in construction and design except it comes with the safety certifications required in some process environments. It’s adjustable, may be mounted direct or remotely and is versatile. It is constructed of cast iron and operates on the proven vapor-pressure thermal system and best of all, it’s low cost.

      • Ranges -500 to 10000F, -450 to 5400C
      • Terminal block connections
      • Set point adjustment with calibrated scale
      • Set point adjustment without declassification of hazardous area

      Datasheet

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      Dual Hi-Lo – Explosion Proof Temperature Switch

      Direct or Remote Mount – Explosion Proof Temperature Switch

      Models: V2
      Ranges: -50° to 1000°F, -45° to 540°C
      Certifications: Unit: INMETRO, RTN, SIL; Switch: ATEX, UL/CSA, TestSafe (SAA)
      Warranty: 3 Years

      The explosion proof, SOR V2 Hi-Lo temperature switch operates on a vapor-pressure thermal system. Fluid vapor pressure changes in a predictable manor according to the influence of temperature on a sensing bulb. It actuates/deactuates a snap-action piston assembly at a discrete process temperature.

      The V2 model features two discrete sensing assemblies and two separate set points with two separate hermetically sealed switch outputs all in a single, housing.  The Dual Hi-Lo V2 temperature switch can signal at minimum and maximum temperatures. It is field adjustable and tamper resistant making it a convenient choice for just about any industry. The designation “V2“ indicates special housing to accommodate the hermetically sealed switches. Ranges from -500F to 10000F

      • 316 SS temperature sensing bulbs
      • Remote sensing bulb is optional
      • Minimal ambient temperature influence
      • AC or DC electrical service

      Datasheet

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      Mini-Hermet – Explosion Proof Temperature Switch

      Mini-Hermet – Explosion Proof Temperature Switch

      Models: Mini-Hermet
      Ranges: -50° to 1000°F, -45° to 540°C
      Certifications: Unit: ATEX, GOST, INMETRO, RTN, SIL, UL/CSA; Snap Switch: ATEX, TestSafe (SAA), UL/CSA
      Warranty: 3 Years

      The sensing assembly of the explosion proof Mini-Hermet temperature switch operates on the vapor-pressure thermal system that has been a standard in the industry for many years. The switching element assembly is hermetically sealed in a stainless steel capsule and carries an explosion proof rating. The small, compact size of the SOR Mini-Hermet makes it extremely popular because it fits where other switches don’t and may be direct or remotely mounted.

      • Hermetically sealed snap switch
      • Ranges from -50° to 1000°F
      • Set point adjustment without declassification of hazardous area
      • Worldwide agency listings

      Datasheet

      Ready to find out more?

      Drop us a line today for a free quote!

      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