Differential Pressure Gauge Structure

  • 24, 10, 2020

1. Differential pressure gauge structure

A differential pressure gauge is comprised of: 

  • Sensing element
  • Drive bar
  • Magnet
  • Pointer
  • High-pressure connection
  • Low-pressure connection
  • Bezel with magnets

VCR differential pressure gauge

2. Differential pressure gauge operation principles 

When the pressure at HP port (Arrow 1) is higher than the pressure at LP port (Arrow 2), the rubber will move in the direction of Arrow 3, pass the drive bar. The magnet will go in the direction of Arrow 4. Through bezel with magnets, clockwise will rotate in Arrow 6 direction. 

VCR differential pressure gauge


The pressure of cleanroom is low, from 10 - 15 Pa, so the sensing element and the clockwise are very sensitive 

The gauge will have the exact value when it is mounted vertically 

After installation, if the clockwise are not at 0 Pa, you could fix it by Zero reset screw 

Find out the details of differential pressure gauge below 



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