HDA 4700 Electronic Pressure Transmitters Flush membrane ATEX Intrinsically safe

The pressure transmitter HDA 4700 in ATEX version has been specially developed for use in potentially explosive atmospheres and is based on the HDA 4000 series.

Like the standard model, the HDA 4700 in ATEX version has the field proven ceramic measurement cell with thick-film strain gauge.

The pressure connection is achieved with an all-welded stainless steel front membrane filled internally with a pressure transfer fluid. The process pressure is transmitted hydrostatically to the measurement cell via the pressure transfer fluid.

This device is used for applications in which a standard pressure connection could become blocked, clogged or frozen by the particular medium used. Further applications include processes where the medium changes regularly and any residues could cause mixing or contamination of the media. Intended areas of application are, for example, the oil and gas industry, in mines, or in locations with high levels of dust, e.g. in mills.

Protection types and applications:

I M1 Ex ia I Ma
II 1G Ex ia IIC T6 Ga
II 1/2G Ex ia IIC T6 Ga/Gb
II 2G Ex ia IIC T6 Gb
II 3G Ex nA llC T6,T5,T4 Gc
II 3G Ex ic llC T6,T5,T4 Gc
II 1D Ex ia lIIC T85 °C Da
II 1D Ex ta lllC T80/90/100 °C Da
 T500T90/T100/T110 °C Da
II 2D Ex tb lllC T80/90/100 °C Db
II 3D Ex tc lllC T80/T90/T100 °C Dc
II 3D Ex ic lllC T80/T90/T100 °C Dc

Special features:

• Pressure connection has a flush membrane
• Accuracy: ≤ ± 0.25 % FS B.F.S.L.
• Certificates: KEMA 05ATEX1016 X KEMA 05ATEX1021
• Robust design
• Very small temperature error
• Excellent EMC characteristics
• Excellent durability