SCH-Ex-DCM Pressure Switch

The pressure applied in the sensor housing acts on the measuring bellows. Pressure changes lead to movements of the measuring bellows which are transferred through a pressure pin to the switching rocker. 

The switching rocker is supported on hardened pivot points. As the pressure increases the switching rocker moves upwards and operates the micro-switch. The spring, the initial stress of which can be changed by the setting screw, acts as opposing force. 

The travelling nut is moved by turning the set point spindle, and the initial stress of the spring is changed. The screw serves for the internal adjustment of the micro switch. The counterpressure spring ensures stable switching behavior, even for low setting values.