HDA 4400 Electronic Pressure Transmitters Hydrogen, Ex applications ATEX, IECEx, dual approval Intrinsically safe, Non-sparking

The pressure transmitter series HDA 4400 has been specially developed for measuring tasks with hydrogen. The transmitters are based on a robust, long-life sensor cell with a thin-film strain gauge on a stainless steel membrane. The sensor cell is welded to the process connection, there are no internal seals. The compatibility with hydrogen is ensured by using a particular material. All hydrogen-wetted parts are made of stainless steel 1.4435 with a Ni content of ≥ 13 %.

The pressure transmitters are applicable in potentially explosive atmospheres, and for this purpose, they are approved for the ignition protection types "intrinsically safe" and "non-sparking" according to ATEX and IECEx.

The applications can be found throughout the hydrogen cycle, with systems for hydrogen production through to systems for hydrogen fueling stations, but also in test stands for hydrogen system components etc.

Protection types and applications:

ATEX

I M2 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 1D Ex ia IIIC T85 °C Da
II 3G Ex nA IIC T6, T5, T4 Gc
II 3G Ex ic IIC T6, T5, T4 Gc
II 3D Ex ic IIIC T80 °C, T90 °C, T100 °C Dc

IECEx

Ex ia I Ma
Ex ia IIC T6 Ga
Ex ia IIC T6 Ga/Gb
Ex ia IIC T6 Gb
Ex ia IIIC T85 °C Da
Ex nA IIC T6, T5, T4 Gc
Ex ic IIC T6, T5, T4 Gc
Ex ic IIIC T80 °C, T90 °C, T100 °C Dc

Special features:

• Specially designed for the measurement of hydrogen
• Parts in contact with the fluid: 1.4435 with a Ni content ≥ 13 % (316L)
• ATEX, IECEx, dual approval
• Ignition protection type: Intrinsically safe, Non-sparking