{"id":38317,"date":"2024-03-26T16:48:18","date_gmt":"2024-03-26T16:48:18","guid":{"rendered":"https:\/\/www.alicat.com\/?post_type=article&p=38317"},"modified":"2026-07-28T21:41:16","modified_gmt":"2026-07-28T21:41:16","slug":"die-auswahl-des-richtigen-wasserstoff-massenstromreglers","status":"publish","type":"support","link":"https:\/\/www.alicat.com\/de\/support\/selecting-the-right-hydrogen-mass-flow-controller\/","title":{"rendered":"Die Auswahl des richtigen Wasserstoff-Massendurchflussreglers"},"content":{"rendered":"

[et_pb_section fb_built=”1″ _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Selecting the right hydrogen mass flow controller” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n

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Unique requirements<\/h2>\n

Hydrogen is nature\u2019s smallest and simplest element. As a result of these properties, hydrogen gas molecules are extremely small relative to all other types of gas particles. Due to this, compared to other gases, hydrogen gas has unique flow properties such as being more prone to leakage during storage or transportation. Because the diffusivity of hydrogen is higher than ordinary gases, sealing\/gasketing materials for a hydrogen mass flow controller must be selected more cautiously. In order to smoothly transition to a global hydrogen economy, hydrogen systems must be built to be extremely leak resistant.<\/p>\n

Moreover, hydrogen is also highly combustible and has the highest rating on the NFPA 704<\/a> flammability scale since ignition can occur at any volumetric ratio of hydrogen to air exceeding 4%. For example, ignition is often an issue of concern when purging hydrogen gas since too much air present can result in explosions. As a matter of fact, hydrogen-air mixtures ignite with 1\/10 the effort to ignite gasoline-air mixtures. Therefore, hydrogen systems must use special fittings and follow unique regulations which are not specific to other gases.<\/p>\n

Additionally, hydrogen has several more chemical attributes which make it unique from other gases such as high levels of oxidation in ambient environments. Hydrogen embrittlement<\/a> is another intrinsic property of hydrogen which occurs over time due to incompatibility with many common building materials. As a result, hydrogen flow systems must emphasize a high level of material compatibility with hydrogen.<\/p>\n

Due to all these special properties of hydrogen, choosing the optimal hydrogen flow controller for a specific application or industrial process varies depending on operating conditions. As a result, Alicat offers a range of flow controllers which are specialized to accommodate the different operating conditions in specific hydrogen applications and processes within hydrogen production, transportation, storage, and the fuel cell industry. Product features such as custom valve sizing<\/a>, port sizing<\/a>, and PID tuning allow Alicat devices to provide optimal flow control of hydrogen.<\/p>\n

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Using Alicat devices to control hydrogen<\/h2>\n

Alicat mass flow controllers have been used in the fuel cell industry for over 20 years. Compared to other mass flow controller technologies such as thermal, Alicat\u2019s laminar flow and Coriolis-based products offer advantages such as:<\/p>\n