How is the differential value of a pressure switch determined?
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The differential value of a pressure switch is also known as the dead zone of the pressure switch. After the pressure switch operates, the pressure must be slightly lower than the operating value for the microswitch to return to its normal state. The difference between this operating value and the reset value is known as the differential value of the pressure switch. I wonder if there are any requirements regarding what value this differential amount (dead zone) should be set to Is it based on regulatory requirements or requirements imposed by the manufacturing process?
It is not recommended to use a \"switching difference\" for interlocking purposes; for example, starting the pump at 3KG, stopping it at 5KG, with a switching difference of 2KG. The differential switching setting has a relatively large deviation, and is used in applications where measurement/control accuracy is not highly critical. For example, in terms of air-conditioning temperature control, since it takes some time for the temperature to rise, this prevents the equipment from having to be turned on and off frequently. You send a 3KG trigger signal to the electrical system, which then locks it in place, keeping the motor running continuously. To shut down the equipment, it’s better to rely on manual effort. @jiaguoyun