Differential Pressure Switches meet global standards.

Press Release Summary:




CSA, UL, and ATEX certified, explosion-proof Models 220/240 are made of lightweight aluminum with weather-resistant 4½ in. gauge front. Piston-style Model 220 features working pressure of 4,000 psi and ranges from 0-5 to 0-100 psid, while diaphragm-style Model 240 provides working pressure of 1,500 psi and ranges from 0-20 in. H2O to 0-100 psid. Both IP65-rated indicating switches include over range protection and ½ in. FNPT cable or conduit entry.



Original Press Release:



Mid-West Instrument's New Explosion- Proof Differential Pressure Switches Meet Global Standards



Mid-West Instrument, a 30 year leader in explosion-proof, differential pressure gauge and switch design announces the firm's new line of 220 / 240 Explosion proof, differential indicating switches. These extremely light-weight and ruggedly compact family of indicating switches set a new standard of excellence in Explosion- Proof design.

The new 220 / 240 differential indicating switches are CSA, UL and ATEX certified. As a condition of continuing certification, Mid-West Instrument is subject to un-announced audits by all certifying bodies. This applies to the entire assembly as mandated by the applicable hazardous locations standards.

Benefits of the 220 / 240 Indicating Switches:
  • Compact, Lightweight Aluminum (or 316/316L )
  • Weather resistant, 4 ½" gauge front
  • ATEX Ex d IIB+H2 ExII 2GD IP65 classification
  • CSA Certified & UL Listed: Class I, Division I Groups B, C, & D, classification
  • ½" FNPT Cable or conduit entry
  • Over range protection & 5 year warranty

    Model 220-Piston Style
  • Working pressure to 4000 PSI (275bar)
  • Ranges from 0-5 PSID to 0-100 PSID (0-0.35 bar to 0-7.0 bar)

    Model 240-Diaphragm Style
  • Total separation between high & low side
  • 1500 PSI (103 bar) working pressure
  • Ranges from 0-20"H20 to 0-100 PSID (0-50 mbar to 0-7bar)

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