Explosion proof Differential Pressure Switch – Air, Clean gas

Explosion proof differential pressure switch for differential pressure, over pressure and vacuum pressure monitoring of air, clean gases, dry vapour for HVAC applications in building, commercial and industrial area. With its adjustable knob, you can set any switching point within the range. With its intrinsically safe certification, it can be installed in Zone 1 and Zone 2 hazardous area.


Explosion Proof Differential Pressure Switchpdf-image

For air, clean gases, dry vapour
Model: 930.8x Ex (For Hazardous area Zone 1, Zone 2)

Beck Air differential pressure switch - 930
Air differential pressure switch – 930 Ex

930.8x Ex is explosion proof differential pressure switch for hazardous area or flammeproof classifed area installation. These DP switch can be used for monitoring over-pressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases.

where x is:

  • 0 = 20-300 Pa with switch differential of 10Pa (0.2 to 3 mbar)
  • 3 = 50-500 Pa with switch differential of 20Pa (0.5 to 5 mbar)
  • 5 = 200 – 1000 Pa with switch differential of 100Pa (2 to 10 mbar)

Differential pressure Switch 930 Ex comes with adjustable knob which can be rotated, thus it can set at required threshhold differential pressure to switch changeover contacts, for pressure control & automation.

Key Features:

  • Explosion proof Zones 1 and 2 with ATEX certification
  • Adjustable knob to set switch at any desired switching pressure
  • Transparent enclosure for ease to monitor switch point
  • Squeezing cable gland to dust and moisture protection
  • Robust performance over the life
  • Easy installation
  • IP54 protected
  • Maximum operating pressure: 10 kPa
  • Operating temperature: -20 deg cel to + 80 deg cel
  • Silicone diaphragm, tempered at 200 deg cel
  • Switch rating: max. 1.0A / 250 VAC
  • Certification: Low Voltage Directive 2006/95/EC; RoHS Directive 2011/65/EC

Some suggested fields of application include:

  • Monitoring air filters and ventilators
  • Monitoring industrial cooling-air circuits
  • Overheating protection for fan heaters
  • Monitoring flows in ventilation ducts
  • Controlling air and fire-protection flaps
  • Frost protection for heat exchangers
  • Air flow switch