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Electrical Switches

Supplier: Birkett Controls

The pressure to be controlled is applied to a sensor (diaphragm, bellows, manometric tube).

Price Guide: POA

Whenever there is a change of pressure, the sensor is distorted and acts on a force balance connected to a microswitch. Opposite this sensitive element, an adjustable spring enables the working point to be adjusted : whenever the pressure on the sensor is sufficient to counter the spring pressure, the force balance changes position.

Adding a second adjustable spring permits greater or lesser increase of the hysteresis (dead-band) or to act on dislocation between the two contacts if the instruments is thus equipped.

Electrical Switches

  • F Series - Compact industrial mode
  • P Series - Industrial model
  • U Series - Low cost model
  • AIRGAS Series - Specific application
  • G Series - Small size model
  • J Series - Small size model