Leak testing of fuel cells and electrolysers

SAFETY AND EFFICIENCY FOR HYDROGEN TECHNOLOGIES

Hydrogen technology plays a significant role in the energy transition. The leak tightness of fuel cells and electrolyzers is a crucial success factor for their safety and efficiency. As a leading provider of leak testing technology and a long-standing development partner of numerous automotive manufacturers, we offer innovative testing systems for bipolar plates, fuel cell stacks, fuel cell systems, and electrolyzers.

Leak testing with a passion for cutting-edge technology: ZELTWANGER develops advanced testing solutions using air and trace gases at any level of automation.

Application examples

Bipolar plates

Small volumes, minimal leakage rates to be detected and a large number of cavities to be tested are among the challenges in leak testing of bipolar plates. By incorporating sophisticated techniques such as the use of the relative pressure method in conjunction with an external valve block or integrated vacuum testing with tracer gases, we are able to ensure reliable test results.

We also offer Testing as a Service for bipolar plates.

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Fuel cell stacks

Fuel cell stacks have to be highly leak-proof. In order to reliably test these complex systems, various testing methods such as air mass flow are used. To locate leaks with pinpoint accuracy and to ensure a high degree of reproducibility, precisely guided sniffer tests using tracer gases like Helium are applied. Furthermore, we can implement additional steps such as compressing the stacks and marking detected leaks.

Leak testing of fuel cell systems

In fuel cell systems, the leak testing of components such as hydrogen supply lines, air and oxygen supply lines, and cooling and heat exchangers is crucial. Ensuring the tightness of these components is of essential importance to guarantee the safety, efficiency, and performance of the fuel cell system.

Leak testing as a service for bipolar plates

Our bipolar plate testing service offers expert leak testing for prototypes and small runs, using advanced testing methods to ensure the reliability and performance of your components.

Key Advantages:

Streamlined launch: No large upfront investment needed.
Fast results: Keep your project on track with efficient testing.
Expert support: Focus on development while we handle the testing.

Technical Specifications:

Testing methods: Latest methods; simulate real operating conditions.
Leak rates: Down to 1 x 10-6 mbar · l/s.
Component sizes: Test objects up to 650 x 750 mm.

German Fuel Cell Cooperation

We are a member of the German Fuel Cell Cooperation, your partners for manufacturing equipment – from metal strip to fuel cell or electrolyzer stack.

How do you efficiently produce the fuel cell or electrolyzer of the future? VON ARDENNE, Weil Technology and ZELTWANGER have asked themselves this question together. Benefit from the knowledge and expertise of the three companies at every step in the process chain.

Visit the GFC Website

Discover professional leak testing

Are you working on a leak testing project?
Contact us for expertise on testing procedures, technologies and equipment.

What makes us your ideal partner:

Holistic

Testing technology, accessories, automation, knowledge transfer and support: We provide you with the complete range of leak testing from a single source, also as a turnkey solution on request.

Scalable

From pre-testing to series production: with our scalable solutions and services, we support you on your way into the future, true to the motto “From Lab to Fab”.

Customizable

Leakage rate, geometry, test pressure, environmental factors – every test item has individual requirements. The same applies to your processes. Together we develop the optimum solution.