HDA 4400 Electronic Pressure Transmitters Flush membrane IECEx Intrinsically safe

The pressure transmitter HDA 4400 in IECEx Intrinsically Safe version has been especially developed for use in potentially explosive atmospheres and is based on the HDA 4000 series.

As with the industrial version HDA 4400, the devices with IECEx Intrinsically Safe approval have the field-proven ceramic measuring 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:

Ex ia l Ma
Ex ia llC T6 Ga
Ex ia llC T6 Ga/Gb
Ex ia llC T6 Gb
Ex nA llC T6,T5,T4 Gc
Ex ic llC T6,T5,T4 Gc
Ex ta lllC T80/90/100°C Da
 T500 90/100/110°C Da
Ex tb lllC T80/90/100°C Db
Ex tc lllC T80/90/100°C Dc
Ex ic lllC T80/90/100°C Dc
Ex ia lllC T85°C Da

Special features:

• Accuracy: ≤ ± 0.5 % FS B.F.S.L.
• Certificate: IECEx TSA 09.0041X / IECEx KEM 08.0014X
• Output signal 4 .. 20 mA
• Very small temperature error
• Excellent EMC characteristics
• Excellent durability