The pressure switch activates when the fluid pressure exceeds or falls below the preset threshold. In adjustable pressure switches, the activation value can be set manually, while in electronic pressure switches, the threshold can be configured digitally. The activation of the pressure switch can turn a device on or off, such as a pump or a compressor, to keep the pressure within safe limits and ensure the proper operation of the system.
There are different types of pressure switches, designed to adapt to specific industrial applications. Mechanical pressure switches activate an electrical contact through a diaphragm or a piston when the pressure reaches the preset value, making them suitable for hydraulic and pneumatic systems. Electronic pressure switches and digital pressure switches use advanced sensors for more precise pressure control and offer a programmable interface for configuring operating parameters, making them ideal for automated applications. Adjustable mechanical pressure switches allow the intervention value to be modified directly on the device using adjustment screws or graduated knobs, adapting to hydraulic systems, water pressure switches, oil pressure switches, and industrial circuits. Differential pressure switches measure the pressure variation between two points and are used for monitoring filters and HVAC systems. Elettrotec is one of the leading manufacturers of mechanical pressure switches and differential pressure switches, providing tailor-made solutions for high-precision systems and complex applications.
If a pressure switch does not function properly, the system may experience malfunctions or damage, depending on the application. In pumping systems, it could lead to pressure overload or system shutdown. In hydraulic or pneumatic circuits, a failure of the pressure switch can compromise safety, preventing intervention in case of excessive or insufficient pressure.
A pressure switch is a device that monitors the pressure of a fluid (liquid or gas) within a system and switches an electrical circuit on or off when a predefined value is reached. It is used to regulate the operation of pumps, compressors and other industrial systems, ensuring safe and efficient pressure control.