Pressure relays for large air separation units
Jun 22, 2022
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DEAR AST
A pressure relay is also known as a pressure switch. Its function is to cut off or switch on the current when the pressure is above or below a specified value to provide an alarm. The structural principle is that an elastic element (such as a bellows) works with a spring, and when the pressure increases (or decreases) to a specified value, it is transmitted to the micro switch through a lever mechanism, which turns the switch on or off to provide an alarm.
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