Single Diaphragm – Weatherproof Differential Pressure Detector with Terminal Block Connections

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Single Diaphragm - Weatherproof Differential Pressure Switch with Terminal Block Connections


101RN, 121RN


3 to 500 psid, 0.2 to 35 bar



SOR 101/121 weatherproof differential pressure detectors are suited for low-to-high differential pressure, fluid power or process applications where high and varying static pressures, high over-range, proof, shock pressure, or cycle rates are expected. They are one of the best-performing differential tops in repeatability and are designed for use in non-corrosive process media. Optional components may be added for corrosive environments.

The 101RN and 121RN are low-cost, rugged, field-mounted instruments incorporating a flexible modular design that provides cost-effective sensing solutions. The two-piece piston design allows for complete differential pressure reversal without damage.

  • Low Cost
  • Ranges from 3 to 500 psid
  • Set point adjustment with calibrated scale
  • Versatile – several housing, detectors, and diaphragm options
  • Worldwide agency listings

Power Plant 101

Safety Integrity Level (SIL) Short Training

INMETRO Certification