Piston Style Differential Pressure Gauge With High Overload Protection

The magnetic piston differential pressure gauge is ideal for differential pressure measurement where high overload protection is required. With options of 80mm or 100mm diameter, the gauge can be used on gas or liquid application and is particularly suitable for monitoring filters, pumps, pipe systems and cooling circuits.

The gauge works by having two pressure chambers separated by a magnetic piston. If there are different pressures in the chambers the magnetic piston is displaced against a compression spring. The magnetic piston transmits this displacement to the pointer by means of a ring magnet mounted to the pointer hub. The complete mechanical separation of the pressure chamber and display excludes the possibility of any pressure leak. Maximum static pressure as standard is 100 bar although options for 250 bar and 400 bar are also available.

Optional reed switch electrical contacts are also available. These are single changeover contacts (SPDT) with a maximum switching voltage of 175V AC/DC. Switch hysteresis is approximately 5% and they are adjustable over 35 to 100% of full scale value. Electrical connection is via an ISO 4400 (DIN 43650-A) plug in connector.

The gauge can be optionally panel mounted with a 3-hole front flange. Please note that the 3-hole front flange needs to be fitted behind the panel as per the drawing attached to this data sheet (see left). .