pressostato
A pressostato, or pressure switch, is a device that uses a pressure-sensing element to actuate an electrical switch when process pressure reaches a programmed value. It provides a binary output, turning connected equipment on or off, and is commonly used to control pumps, compressors, boilers, and hydraulic systems.
Construction and operation: A typical pressostato consists of a sensing element—usually a diaphragm, bellows, or piston—connected
Types: Mechanical pressure switches with fixed or adjustable setpoints; differential pressure switches monitor the pressure difference
Applications: Widely used in water supply and irrigation, heating, ventilation and air conditioning, refrigeration, and process
Maintenance and standards: Regular inspection for leaks, corrosion, and contamination is advised. Calibration may be required