Differential Pressure

Mid-West Instrument differential pressure gauges are designed to measure the difference in pressure between two points in a system and display the resulting differential pressure measurement on the gauge dial. The magnetic movement allows the simultaneous sensing of both pressures while completely isolating the differential pressure gauge function from the pressure chamber without the use of mechanical seals. Unlike ordinary pressure gauges, differential pressure gauges will indicate small values of differential pressure even when used with high line working pressures.

Mid-West Instrument differential pressure switches are supplied with reed switches or relays to initiate alarms, activate other equipment, or shut the system down. Two switch units are installed when high and low alarms required.

Mid-West Instrument has engineered a series of differential pressure transmitters with the ability to transmit data signals. The microprocessor based instruments are equipped with proprietary magnetic sensors that convert the differential pressure gauges’ normal magnetic movements into electric signals. After processing, the DP gauge units provide 4-20 mA output for remote location monitoring. Since the usual pointer-and-dial gauges continue to operate, local station readout is always available.

Mid-West Instrument manufactures our differential pressure gauges, switches and transmitters to meet customer requirements.