A mechanical pressure switch is a device that activates or deactivates an electrical circuit when a certain pressure threshold is reached.
| Operating Principle | It operates through a mechanical element, such as a diaphragm or bellows, that moves in response to pressure changes, triggering the switch. |
| Types | – Diaphragm-Type: Features a flexible diaphragm that bends with pressure variations. – Piston-Type: Utilizes a piston mechanism that responds to pressure levels. – Bellows-Type: Employs bellows to detect changes in pressure. |
| Applications | Commonly found in HVAC systems, water pumps, industrial equipment, and both pneumatic and hydraulic systems. |
| Pressure Range | Designed for a wide range of pressures, typically from low levels (a few psi) to very high pressures (thousands of psi). |
| Adjustment | Many mechanical pressure switches allow for manual setting of the pressure threshold for tailored operation. |
| Advantages | – Simple design requiring no external power. – Known for their reliability and durability with low maintenance needs. – Quick response to changes in pressure. |
| Challenges | – Mechanical response times may be slower compared to electronic alternatives. – Sensitivity to shock and vibration can impact accuracy. |
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