Overview of Mechanical Pressure Switches and Selection Criteria
Mechanical pressure switches are durable and also not that expensive. In the current market, there are a variety of options that can meet a lot of requirements and support a plethora of applications. In a heavy duty mechanical pressure switch , a diaphragm opens/closes a circuit when the pressure in the medium gets above or below a specific value. For when pressure reaches the switch point, the diaphragm transmits the pressure to a micro switch. The micro-switch contact may either snap open (to open a circuit) or snap closed (to close a circuit). The hysteresis of the micro switch indicates the switch-back of the pressure switch. A good thing about mechanical pressure switches is that they do not depend on a power supply. Three major factors to consider when choosing a mechanical pressure switch are: Medium and temperature: The medium and the associated temperature play a crucial role in determining the material for the case, the sensor element and also the wetted parts. Pressure: