Mechanical flow switches are used in many industrial contexts e.g. as pump protection to secure bearings and gaskets against overheating. At Klinger we can offer several different types, e.g. paddelswitche.
The paddle switch is a device in which the sensor element is designed as a tab that is mechanically affected by the liquid that passes. The movement that the influence results in activates a switch whose signal can be used for monitoring / event control.