DE13

Typical Applications

• Monitoring filter condition

• Flow control

• Monitoring ∆ p at valves

• Pump control

Construction and Operation

The pressures to be compared each act on an outer flexible stainless steel isolating diaphragm. They are transferred to the sensing diaphragm by the pressure transfer fluid. When pressures are equal on both sides of the sensing diaphragm, it is at zero position. Pressure difference across the sensing diaphragm causes it to deflect away from the higher-pressure side, resulting in linear displacement of the LVDT core. This displacement is sensed by the LVDT’s coils, and converted by an electronic module to an output signal proportional to the differential pressure. Inward deflection of each isolating diaphragm is limited by the intermediate plate behind it. This also limits the pressure that can be transferred to the sensing diaphragm. Thus, all three diaphragms are fully protected against excess differential pressure in either direction, and also against high static pressures.

Main Features

• highly corrosion resistant

• rugged, wear resistant sensor design

• low hysteresis

• easy to rinse pressure chambers

• unaffected by fouling