HDA 8400 Electronic Pressure Transmitters for Hydrogen, mobile applications EC 79/2009 type approval

The pressure transmitter series HDA 8400 has been specially developed for measuring tasks with hydrogen in mobile applications. 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 transmitters are certified according to the regulations EC 79/2009, the type approval for hydrogen-driven vehicles. For optimum adaptation to the respective application, a variety of hydrogen-suited process connections have been implied into the certification.

For integration into modern controls, standard analogue output signals are available, e.g. 4..20 mA, 0.5 .. 4.5 V or 1 .. 5 V. Ratio metric output signals are also available. Various mobile suited, integrated connectors and cable solutions are available for the electrical connection.

Application fields

The applications can be found in all hydrogen-driven vehicles, placed on the market in accordance with the regulations EC 79/2009. In fuel cell electric vehicles (FCEV’s) such as cars, buses, trucks, etc., pressures are monitored and regulated, starting with the high-pressure storage system up to the entrance of the fuel cell.

Special Features:

• Specially designed for the measurement of hydrogen
• Parts in contact with the fluid: stainless steel 1.4435 with a Ni content ≥ 13 % (316L)
• EC 79/2009 type approval