Siemens Differential Pressure Switch for HVAC

A simple electro mechanical device that operates on the basic priciples of leevrs and opposing forces. Use to sense the difference between two points in a system - the high and low pressure.
When a change occurs in the differential pressure between the two sides of the diaphragm, the spring loaded diaphragm moves, transmitting a force to a snap switch.

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[kcomfortsystemshvac]

Hi, ,,very whant try to understand have example, , , , if I have supply 5000 cfm, , what setting the sensor, do I need it ? Can you explain that please, ,,I whant learn thanks

[hp]

I am going to use it in 30mbar pressure. Whenever my suction pump gets off the DPS should be able to provide a signal.
Meaning from 30mbar when the pump is off the pressure will tend to increase and I want to generate a signal. How can we do with this?