Pressure Switch
A pressure switch turns an electric circuit on or off at a preset pressure. This pressure is referred to as the set point of the switch. A bourdon tube, a diaphragm, or a bellows can actuate the switch . Pressure Switch working:- The contacts in a pressure switch may be normally open or normally closed if the pressure is below the set point. The contacts in a normally open (N.O) switch remain open until the pressure increases above the set point. Then the sensing element makes the contact snap to the closed position. The contacts open again when the p...