Hydrogen Sensor


Technology abstract

The hydrogen sensor is a development based on a miniaturized sensor system which flow on the International Space Station ISS.

Technology Description

The hydrogen sensor is a system originally dedicated for space applications particularly suitable for measurements below 1.000 ppm H2. The working principle of the sensor system is the solid state electrolysis in the Non-Nernst version. This allows H2-measurements starting from even 1 ppm e.g. for leak detection or for monitoring the lower explosive limit of fuel cells. To do justice to the high demands regarding quality and quantity are used a multi-layer procedure which uses screen printing, sensors for various configurations are constructed so that they can be reproduced.
Technical Data

  • principle of measurement: solid state electrolysis (Non-Nernst)
  • sensor dimensions: (w x l x t) 3,5 x 20,0 x 0,6 mm
  • measurement range: 0... 20.000 ppm H2 (50% of the lower explosive limit)
  • sensor temperature: approx. 580 °C
  • response time: < 1 s
  • required power supply: approx. 3 W
  • temperature range in application: 200 °C (dependent on housing)
  • output: analog 0... 10 V
  • housing, electronics: customized

Innovations & Advantages

The exceptional advantages of this hydrogen sensor are:

  • High resolution
  • Fast response
  • Mechanical, chemical and thermal robust
  • Small dimensions
  • Wide range of application

Further Information

Current and Potential Domains of Application

The sensor is applicable for measurement and monitoring duties in a wide range of hydrogen applications.