Weatherproof Differential Pressure Switches

Weatherproof switches are sealed for external use. They are built to stand up to the rigors of the environment and provide long lasting and dependable service. SOR weatherproof differential pressure switches also feature adjustable set points. If your application requires you to monitor differential pressure in a weatherproof environment, look no further.

High Static Operation – Weatherproof Differential Pressure Switch
Models: 102W1, 103W1
Ranges: 7 in wc to 2500 psid, 18 mbar to 175 bar
Certifications: Unit: ATEX, CSA, GOST, INMETRO, RTN, SIL
Warranty: 3 Years
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Low Range – Weatherproof Differential Pressure Switch
Models: 107AL
Ranges: 0 to 40 in wc, 0 to 1000 mm wc
Certifications: Unit: CSA, FM, RTN, SIL
Warranty: 3 Years
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Opposed Piston – Weatherproof Differential Pressure Switch
Models: RB
Ranges: 0.5 to 1000 psid
Certifications: Unit: CSA, INMETRO, RTN, SIL
Warranty: 3 Years
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Single Diaphragm – Weatherproof Differential Pressure Switch
Models: 101NN, 121NN
Ranges: 3 to 500 psid, 0.2 to 35 bar
Certifications: Unit: CE, CSA, INMETRO, RTN, SIL
Warranty: 3 Years
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Single Diaphragm – Weatherproof Differential Pressure Switch with Terminal Block Connections
Models: 101RN, 121RN
Ranges: 3 to 500 psid, 0.2 to 35 bar
Certifications: Unit: ATEX (IS), CSA, INMETRO, RTN, SIL
Warranty: 3 Years
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Weatherproof Low Range Differential Pressure Switch
Models: Series 20
Ranges: 0.25 in. WCD to 75 psid
Certifications: Unit: CSA, SIL
Warranty: 3 Years
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Long lasting and dependable

  • Precise quality standards from raw materials to finished switch
  • Low cost
  • Set point adjustment with calibrated scale

Wide range of standard models

  • SOR has a weatherproof differential pressure switch to fit a wide variety of applications where protection from the elements is vital to your process
  • Extensive range of wetted parts available
  • Several instrument enclosures available including aluminum and stainless steel

Engineered to your specifications

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

Safety certified to IEC 61508 (SIL)

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

Versatile features

  • Draft ranges to high differential set points
  •  High static working pressures
  • Capable of full differential pressure reversal

Simple to use

  • Installs easily without the need for special tools
  • Factory calibration at no charge
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