Furness Controls Differential Pressure Purge Transmitter Accuracy 0.25% of reading Ultra low pressure measurement 2-wire mA, 3-wire or 4-wire voltage output Integrated user keypad IP65 Polycarbonate enclosure Purge pressure up to 10 Bar Furness Controls’ Differential Pressure Purge Transmitters overcome the long standing problem of blocked impulse lines. The units are for use with Pitot tubes, flow grids or static pressures and ensure that the holes & impulse lines do not become blocked during use where there is debris or particles in the flow. The purge units consist of a well proven differential pressure transmitter with additional software and electrically operated valves. At a timed intervals the output of the transmitter and the local display are held whilst the impulse lines are reverse purged to clear them of any potential blockage of the holes and as an added bonus during this time the transmitter is equalized and automatically zero adjusted. The units offer high accuracy of 0.25% of reading plus the option of square root extraction and two st

Features Models/Ranges Output Options Display Adjustable Damping Furness Controls Purge Timers Square Root function Trip Level Relays Zero Control Pneumatic Ports Model1: ±50Pa Model4: ±2500Pa Model2: ±150Pa Model5: ±10kPa Model3: ±500Pa Model6: ±20kPa 2 wire 4-20mA 3 wire voltage: 0-1 VDC to 0-10VDC full scale 4 wire voltage: 0-1 VDC to 0-10VDC full scale 4 wire voltage: ±1 VDC to ±10 VDC full scale 4 wire isolated: any of the mA or voltages above Most common differential pressure, volumetric flow, mass flow, and velocity units 0.0 to 60.0 seconds Purge time presetable from 0.9 seconds to 11...