Negative gauge reference pressure sensor for measuring vacuum pressures relative to atmospheric pressure. Suction pressure ranges from -40mbar down to -1 bar gauge.
The DMP 331 suction pressure transducer has a silicon piezoresistive sensing element with a vent to atmospheric pressure on the reverse side of the silicon diaphragm which provides a gauge pressure reference. The Silicon chip is protected from the process media by sealing it inside an silicone oil filled capsule with a convoluted isolation diaphragm to allow the transfer of pressure to the semiconductor sensing element.
There is an ATEX approved 4 to 20mA output electronics option for the DMP-331 negative gauge pressure transmitter for intrinsically safe use in hazardous zones where flammable gases could be present.
The DMP331 suction pressure transducer has a variety of configurations with all welded media exposed parts, semi-flush diaphragm, field housing and IP68 buccaneer water-proof connector.
Technical Summary
Pressure Range: -40mb down to -1000mb (-1.5 psi down to -15psi) gauge
Accuracy: 0.175% > 0.4 bar, 0.25% <= 0.4 bar as standard with options for 0.125%, 0.1% and 0.05% FS BSL NLHR
Output Signal: 0/4 to 20mA current loop or 0-10V voltage
Electrical Connections: Field housing with M16 cable entry, DIN43650, binder, buccaneer or M12 sockets plus integral cable glands with ingress protection to IP67 or IP68
Pressure Connectors: G1/4, G1/2, 1/4 or 1/2 inch NPT male thread plus G1/2 open pressure port design, plus M20 x 1.5 male
Media Compatibility: Stainless steel 316 Ti pressure port, stainless steel 316L diaphragm with all welded, FKM or EPDM O ring internal seal
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