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Differential Pressure Switches, some people call it as Differential Pressure Controller, Some People call it as Pressure Differential Switch, some people call it as Differential Pressure Flow Switch. This is a very useful device in the automatic Backwash or backwashing system.
The Backwash system could be the process of thoroughly cleaning a swimming pool's filter by a method of reversing the flow of water to flush out contaminants. Back-flushing filters also could be self-cleaning systems where a cleaning of the filter elements with the filtrate is generated by flow reversal. Depending on the type, a distinction is made between manual (hand-operated) and automatic back-flushing filters This way, you don't have to clean the filter manually, and it usually takes just a few minutes. Continue the process until the water runs clear through the waste line.
If you want to meet the above function of auto back-flushing, you have to install a differential pressure switches in your filter, to detect the differential pressure between inlet and outlet.
Differential Pressure Switches is installed across the filter in order to identify filter dirty condition by the pressure difference so, Differential Pressure Switches positive tube must be installed before the filter or say positive side(when dirty particles get into the filter, pressure will increase here) and negative tube to be installed after the filter say negative side and pressure range selected as 50Kpa for Differential Pressure Switches.
1. Initially when a fluid at the off condition, before the filter and after filter will be same pressure, so there is no differential pressure across before and after the filter. here pressure differential pressure or PD is zero.
PD=0 Kpa and lesser than 50Kpa(set point)
so here still NC and C remain the same.
GE-511A Brass body is Pressure Differential Switch with adjustable setpoint. The adjustable differen...
GE-511C differential pressure switches adopt stainless steel material, dirt resistant, sterile, sani...
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