The differential pressure switch is a kind of mechanical switch. There is a diaphragm or bellows in a pressure chamber to divide the pressure chamber into two chambers for low port and high port. The two chambers have high and low pressure end interfaces respectively. The high-pressure port is connected with the high-pressure pipe, and the low-pressure port is connected with the low-pressure pipe (it can't be connected reversely, otherwise the diaphragm or bellows will be broken) to transmit pressure at the same time. At this time, the high and low pressure offset each other to form a pressure difference value, It changes elastically through the mechanical pressure sensing element and gives the on or off signal by setting to a certain extent. It is just a signal generator. When the normally open and normally closed contacts of the differential pressure switch are connected to the relay or PLC, they can enter the control system.
3. The differential pressure switch can also be used on the differential pressure filter and dust remover of the water treatment system
A.YITE Brand 101NN type Mechanical Dfferential Pressure Switches
Higher static Pressure, Large adjustable range
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