The DMP 331 hazardous area absolute pressure transmitter has a silicon piezoresistive sensing element with a vacuum reference trapped on the reverse side of the silicon chip which provides an absolute pressure reference. The Silicon is hermetically sealed inside an oil filled capsule with a convoluted isolation membrane to facilitate the transfer of pressure to the sensing element.
The 4 to 20mA output signal of the DMP331 IS absolute pressure transmitter has been ATEX approved for use use in hazardous areas where flammable gases could be present.
The DMP-331 ATEX absolute pressure sensor has a variety of configurations with all welded wetted parts, semi-flush diaphragm, process style electronics housing and IP68 buccaneer connector.
Technical Summary
Pressure Range: from 100mb up to 40bar (1.5 psi - 600 psi) absolute
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: 2 wire 4-20mA current loop
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: 1/4 or 1/2 inch male thread size in BSP or NPT with semi-flush diaphragm (EN837 only) open port style (1/2 BSP only) and M20 x 1.5 male
Media Compatibility: Stainless steel 316Ti pressure port, stainless steel 316L diaphragm with all welded, FKM or EPDM O ring internal seal
Special Features: ATEX IS certification to II 1 G EEx ia IIC T4
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