Jump to content
  • Industries
  • Energy
  • Hydrogen
 
@copyright

malp - www.stock.adobe.com | Branche - Energie - H2
picture credits / copyright

Hydrogen – The Energy Revolution

With our two locations in Beierfeld and Wesel, we are in the immediate vicinity of the two hydrogen competence centres in Chemnitz and Duisburg and are in close contact with customers from the hydrogen industry.

For several years, our instruments have been installed in hydrogen research projects – such as the Hydrogen Testfield of the Hydrogen and Fuel Cell Center (ZBT GmbH). This allowed us to gain experience with various hydrogen processes at an early stage.

Selected products

for the use in hydrogen applications

Bourdon Tube Safety Pressure Gauge

RSCh 100 – 3

Featuresstainless steel 316L
safety version S3
degree of protection IP65
ATEX
Pressure range0 – 0.6 bar to 0 – 1000 bar
Accuracyclass 1.0

Diaphragm Safety Pressure Gauge

PSCh 100 – 3

Featuresstainless steel 316L / Inconel 718
safety version S3
degree of protection IP65
ATEX
Pressure range0 – 10 mbar to 0 – 40 bar
Accuracyclass 1.6

Chemical Seal Mounting with Gold Coating

Diaphragm Seal MDM

Featureschemical seal stainless steel 316L with gold coating

Process Transmitter Differential Pressure

PTDi

Featuresgold-plated membrane
Pressure range−7 / +7 mbar to 0 – 70 bar
Accuracy≤0.075 %

Process Transmitter Pressure

PTPi

Featuresgold-plated membrane
Pressure range0 – 70 bar to 0 – 1000 bar
Accuracy≤0.075 %

Pressure Transmitter

DTMH

Features

thin film sensor, placed inside,welded membrane and process connection made of 316L (1.4404 / 1.4435)

Pressure range0 – 4 bar to 0 – 600 bar
Accuracy≤0.5 %

Pressure Transmitter

PTMFB

Featuresgold-plated membrane
Pressure range0 – 160 bar to 0 – 1000 bar
Accuracy≤0.2 %

Resistance Thermometer with Process Display

TPtPAXd

Featureshydrogen-resistant with appropriate thermowell e.g. stainless steel 316L

Temperature range

−200 °C to +600 °C
Accuracy≤0.05 %

Application fields

► Research & development of components for hydrogen technology
► Generation – electrolysers
► Transport – pressure monitoring
► Storage – hydrogen compressor system
► Distribution – storage tanks
► Utilisation – fuel cells, gas engines, natural gas admixtures

Application Example

Hydrogen compression

Hydrogen can be produced and stored with the help of an electrolyser.

In order to make the storage more efficient, it is compressed using hydrogen compressor systems. The materials used for this and also the measurement technology must therefore meet the high requirements of hydrogen under high pressure.

Hydrogen – The Requirements

Both atoms of the hydrogen molecule are very small. Due to this, the hydrogen molecule is able to penetrate solid materials, also called permeation. The hydrogen molecules permeate the lattice structure of the material, increase the internal pressure at atomic level and thus gradually change the material properties, unfortunately for the worse. This is referred to as hydrogen embrittlement of the material.
By selecting a suitable material for all surfaces in contact with the medium, the effects of this problem can be minimised. Hydrogen applications are often safety-relevant systems that require high standards in terms of leak tightness and explosion protection.

Our Instruments in Detail

Wetted parts

We primarily use materials such as 316L, Inconel or Hastelloy for our devices – materials which are tried and tested in various hydrogen applications.

Safety version

In accordance with DIN EN 837-1, our devices are equipped with a break-proof solid front and a blow-out back to protect the personnel working on the device in case of a burst.

Restrictor screw

In case of leakage, the restrictor screw reduces the exhaust velocity of the hydrogen and prevents flashback.

Helium leak detection

Our devices are leak-tested to prevent leaks and unintentional release of hydrogen. Any problem areas are thus already detected in advance.

Gold coating of thin membranes

The gold coating minimises the diffusion processes and prevents embrittlement of the wetted parts on the one hand and the ingress of hydrogen into the filling liquid of chemical seals and pressure transmitters on the other hand.

Free of grease and oil

To meet increased requirements, our devices are cleaned and adjusted separately.

Suitable for outdoor applications

Our devices comply with the degree of protection IP65 and are suitable for outdoor use.

ATEX version

We have ATEX certificates for many of our devices, especially for group IIC (hydrogen applications).