Pressure Switch
A pressure switch is an automated device that operates an electrical contact when a preset fluid pressure is reached. Instead of being manually switched, it automatically closes or opens a circuit to regulate, monitor, or protect a system.
Core Components & Operation
-
Sensing Element/Transducer
This part of the switch comes into contact with the fluid or gas and converts the measured pressure into mechanical or electrical movement.
-
Electrical Switch
The mechanical action from the sensing element triggers an electrical switch, which opens or closes a circuit.
-
Set Point
The specific pressure level at which the switch activates. This can be fixed or adjustable by the user.
Key Features
-
Adjustability
Many switches allow for adjustment of the set point, allowing for application-specific pressure thresholds.
-
Digital Output
Pressure switches provide a simple two-state output: the electrical circuit is either on or off, making them suitable for control systems.
-
Durability
Designed to withstand harsh environments and repetitive use, ensuring long-term, reliable performance.
-
Versatility
Capable of monitoring a wide range of liquids, gases, and vacuum conditions across many industries, from refrigeration to fire sprinklers.
-
Safety
Act as critical safety devices, for example, to trip a compressor in an air conditioning system to prevent overpressure.
