The 4000 Series Capsuhelic liquid differential pressure gauge can quickly and accurately indicate differential pressure. It can be used to show the differential pressure across liquid filters, the liquid level in tanks, or any other situation that requires positive pressure, negative pressure, or differential pressure measurement.  

It uses the reliable and durable design concept of the Magnehelic & micro-differential pressure gauges, with a simple and dependable structure. The movement is wear-free and can provide precise readings as low as 0.5 inches of water. With a sealed capsule, it can measure differential pressures below 0.1 inches of water even when the static pressure reaches 500 psig.  

The precision capsule measuring element doesn’t need to be filled with liquid and is suitable for outdoor use. The zero point and range can be adjusted externally, so calibration or maintenance doesn’t require removing the gauge.  

Note: It can be used with hydrogen, but you need to choose a Buna-N nitrile rubber diaphragm when ordering, with a working pressure of 35 psi.

● The sealed diaphragm box allows for high-pressure use with very little pressure difference

● You can adjust the zero point and range externally without opening the pressure gauge

● Simplified, friction-free moving parts let the full-scale reading go as low as 0.5 inches of water

● Diaphragm drive with filled liquid makes the differential pressure gauge suitable for outdoor use