Mid-West Instrument”s 220/240 explosion-proof, differential-indicating switches are lightweight and ruggedly compact devices. The switches are CSA, UL, and ATEX certified. As a condition of continuing certification, Mid-West Instrument is subject to unannounced audits by all certifying bodies. This applies to the entire assembly, as mandated by the applicable hazardous locations standards.

Benefits include:

  • Compact, lightweight aluminum (or 316/316L )
  • Weather resistant, 4.5” gauge front
  • ATEX Ex d IIB+H2 ExII 2GD IP65 classification
  • CSA Certified & UL Listed: Class I, Division I Groups B, C, & D
  • 1/2” FNPT cable or conduit entry
  • Over-range protection & 5 year warranty

Model 220-Piston Style

  • Working pressure to 4000 PSI (275 bar)
  • 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)