Standard Transmitters Hydrogen for Pressure Measurement

  Enquiry / contact me

Customers can define a sensor for measuring the pressure in hydrogen that is tailored to their application requirements

Test & Measurement

Standard Transmitters Hydrogen for Pressure Measurement
Standard Transmitters Hydrogen for Pressure Measurement

Sensor-Technik Wiedemann GmbH is extending its M01 pressure transmitter range with hydrogen resistant components.

Energy sources with opportunities and issues

Hydrogen: This is the lightest and first element in the periodic table. When hydrogen combusts or explodes, energy and water are generated - and nothing else. When compressed, hydrogen possesses a high energy density, which can also be converted directly into electrical power with the aid of fuel cells. These properties make it a popular energy source, in particular for vehicles.

However, the production and storage of this pure element can be problematic. Hydrogen is so volatile that it can even diffuse through steel. This represents a problem when measuring pressure in hydrogen. Many pressure measurement devices feature thin membranes, through which the hydrogen can penetrate. Even worse: due to the deposition of hydrogen on the membranes, the material changes so that the pressure measurement no longer functions, or the membrane tears.


The solution

STW has been producing a modular system, the M01 pressure transmitter series, with 1.5 million versions. Now the new Hx measurement elements and pressure connections can be manufactured from a stainless steel in the 316L group. This stainless steel has passed the complex endurance and load cycle test in hydrogen with excellent results. The existing standards also confirm the material 316L to be hydrogen-resistant. Transfer fluids or mediator mediums are not required. The customer can now assemble an appropriate transmitter for hydrogen within a pressure range from 3.5 to 900 bar. Amongst other things, 20 pressure connections, 10 electric connectors and 9 electric interfaces are available. Qualifications acc. UL, CE, E1, ASIL, SIL, PL, calibrated, (ATEX in preparation) are available.


Measures hydrogen yet remains robust

The overpressure strength also remains at a very high level with the hydrogen-resistant version. For example, the 3.5 bar version can be overloaded up to 20 bar without being damaged. The M01 can also withstand temperatures from -40 ... 125°C. Because both the measurement cell and the pressure channel are made of 316L stainless steel, the medium does not come into contact with any other material. No seals can have an adverse effect on the outstanding media resistance. The burst pressure, accuracy (1%), environmental characteristics, load cycle strength and EMC characteristics also accord with the other products in the M01 series.

Posted on April 18, 2016 - (3293 views)
Sensor-Technik Wiedemann GmbH
Am Bärenwald 6
87600 Kaufbeuren - Germany
View full company profile

Standard Transmitters Hydrogen for Pressure Measurement

Customers can define a sensor for measuring the pressure in hydrogen that is tailored to their application requirements

Related articles
Spetec Moves to a Larger Building and Gets Ready for the Expansion
Measuring Flow of Corrosive Fluids
Specialist Optical Systems
Top 10 Tips for Flowmeter Selection
Flowmeter for Industrial Process & Control
Easy-to-clean Laboratory Flowmeter
Automotive flow measurement
Precise Metering of Viscous Liquids
Measuring Flow of Low Viscosity Liquids
Flowmeters Help Reduce Drug Production Costs
Thermostats and Hygrometers
Non-contact Temperature Measurement
Thermocouple Cables
SIKO Measuring Technology
Micro-Epsilon Thermal Cameras
Ultrasonic Flowmeter ATZTA TRX
Innovative Encoders & Actuators
Sensing Innovation for Process & Control
Sensors & Instrumentation Live from 25 to 26 September 2019
Ultrasonic Air Flowmeter for Compression Applications
Floor-standing or Table-top Clean Room Station
Compact Cameras for Thermal Imaging
BRIO Portable and Affordable EC/ECA
Continuous Monitoring System
Non-invasive Ultrasonic Flowmeter
Device for Copper Cable Testing and Certification
Endress+Hauser To Showcase Self-Monitoring Measurement Technologies
Images and Height Profiles Analysis
Laser Triangulation Measurement Sensors
Ultrasonic Flowmeter for Corrosive Fluids