Hazardous Areas Adjustable Pressure Switch 646V*E* & 646GV*E - Diaphragm Sensor

  • Highly reliable devices utilizing the CCS Dual-Snap® Belleville disc spring principle pioneered by CCS' engineers
  • Engineering based on aerospace technology
  • Rigid, midsize and internally adjustable for convenient field set point adjustment
  • Repeatable and stable set points
  • Vibration and shock resistant
  • High cycle life
  • High over-pressure capability. (System and Proof)
  • Certified explosion proof hermetically sealed electrical assembly for environmental protection
  • Various options for wetted materials and electrical ratings to meet a wide range of application requirements and media capability
  • Suitable for ultra low pressure and vacuum to pressure applications

    • Series - 646V*E* - 646GV*E*

    Adjustable Setpoint Ranges

    Vacuum -
  • 1 to 28.5" Hg
  • 25 to 724 mm Hg

    • Crossover -


  • 20" Hg Vacuum to 12 psig
  • 508 mm Hg to 0.83 bar

    • Operating Temperature

  • Temperature limits change with o-ring selection.
  • -40° to 186°F
  • -40° to 86°C

    • Standard Features

  • Hermetically Sealed Electrical Assembly
  • CE Mark
  • Dual Seal: ANSI/ISA-12.27.01-2003
  • NACE MRO175:2003
  • NEMA: 4, 7, 9,13 / IP66
  • U.L. / CSA Listed

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