…an in-house development
The 1000 bar permeation cell is an innovative in-house development from Mecadi that has been specially designed for demanding permeation tests in the field of hydrogen and pressure vessel technology. It not only meets the relevant CSA/ANSI CHMC 2:19 and ISO 11114-5:2022 standards, but also goes beyond them with modified technical details and improvements to characterize plate materials at high pressures and/or high temperatures with regard to permeation.
Why 1000 bar?
Hydrogen technology is becoming increasingly important in the development of sustainable energy sources. Materials for the production of tanks, pipes or seals are the basis for a hydrogen infrastructure. Today’s high-pressure gas storage tanks usually operate at 350 to 700 bar. In development, even more extreme pressures of up to 1000 bar are being sought in order to further increase the storage density. In this context, the tightness and safety of the materials and containers used, especially under extreme conditions, are of crucial importance.
Permeation measurements at > 350 bar, as they occur in modern hydrogen storage and transport technologies, are essential to assess the suitability of materials for handling hydrogen under pressure. Due to its small molecular size and high diffusivity, hydrogen tends to diffuse through many materials, which can lead to safety risks and efficiency losses.
The determination of permeation characteristics at high pressures ensures that materials meet the requirements for tightness and long-term stability. In addition, material selection, design and costs can be optimized to maximize the safety and efficiency of hydrogen storage and transport systems.
Mecadi 1000 bar permeation measuring cell
The advantages of our service
- Representative test conditions: We offer tests under pressure and temperature conditions that correspond to the actual operating conditions in hydrogen storage tanks and vehicles.
- State-of-the-art technology: Our measurement setup ensures that all permeation measurements are performed with the highest possible degree of accuracy and under exact specified conditions.
- Flexibility in test conditions: We offer a high degree of customization to meet your specific requirements (including variable pressure and temperature profiles and different gas mixtures). For high pressure measurements > 350 bar we offer the manometric method (ISO 15105; CSA/ANSI CHMC 2:19) or the carrier gas method.
- Speed and efficiency: By using advanced technology, we can provide you with fast results that are crucial for product development and approval.
- Individual advice: Our team is on hand to advise you on the best test methods for your specific materials and requirements.
Detection limits and recommendations
The detection limits for permeation measurements in the Mecadi high-pressure measuring cell are specified in the relevant standards and depend on the test method, test medium and test material. Please contact us to discuss your specific application.
Requirements for your samples
- To measure in the Mecadi 1000bar cell, we need samples with a diameter of 78-80 mm.
- It is important that the sample is representative of the material and has no faults or defects.
- Thickness variation < 5%, roughness r(a) < 20 μm.
- We are happy to determine the thickness of the sample for you in accordance with ISO 4593.
- We realize sample cuts from larger containers by cutting, punching, laser cutting, water jet cutting (external).
- For tissue-containing samples, we offer additional cut-edge masking to prevent false-to-low false results.
- We recommend sending at least three independent samples per test. We usually measure samples with a thickness of 20 µm to 3 mm. Other thicknesses are also possible on request.
Test media
We offer a wide range of different test gases and liquids in order to be able to react flexibly to your request. These include, for example
Standard: hydrogen, nitrogen, oxygen, helium, argon, krypton, etc.
Specialties: NH3, H2S, Cl2, HCl, SF6, NO, NO2, short-chain alkanes, etc.
Test conditions
The Mecadi high-pressure measuring cell is specially designed for use with hydrogen under extreme conditions. Alternative test media can also be realized. We will be happy to advise you on specific requirements or mixing ratios.
For material use in a specific application, the permeation data should be selected as close as possible to the operating point of the application (pressure, temperature).
Our laboratory enables us to carry out permeation tests at temperatures ranging from -50 °C to +150 °C.
Get in touch with us
Would you like to find out more about our high-pressure measuring cell or do you need a customized offer? Our team of experts is available to answer all your questions. Contact us via our online form or directly by email or phone. We will be happy to advise you on your requirements and find the solution for your material tests.
Related standards
ISO 19881:2018
CSA/ANSI CHMC 2:19 GB/T 42610-2023
ISO 11114-5:2022
By the way: You can find a complete list of our test methods and services here: https://www.mecadi.com/de/permeationsmessungen/ (more on request)
