Hydrogen & Helium Mass Spectrometer



The HSense is based on the Electron Impact Ionization (EIMS) Mass Spec principle optimized to measure H2 and He fast and reliably. By using the electron ion source the gas sample ions are energized, focused and separated further on in a magnetic field in order to detect Hydrogen and Helium.

The unique and fully automated gas inlet system compensates for pressure variations in between 500 mbar and 3 bar. The system guarantees the correct measurement and avoids any discrimination of the gas.

Any contamination due to condensation or particulate matters is minimized by the integrated 2 micron fine filter in combination with a cross flow sample conditioning system, which takes care of any potential water content.

Functional Diagram


Typical Applications

  • Hydrogen measurements
  • Development of combustion engines and catalyst research
  • Fuel cell research and development
  • Gas matrix independent measurements on fuel cells
  • Breath analysis

Measureable Compounds

Substance name Molecular formula
Hydrogen H2
Helium He


Technical Data SF-MS Technical Data SF-MS
Mass range 2 – 4 amu Reproducibility ‹ ± 3 %
Resolution ‹ 1 amu Accuracy ‹ ± 2 %
Analysis time ›= 1 msec/amu Ambient temperature 10 °C - 35 °C
Measuring range* 0 -50,000 ppm, 0 – 100 Vol% Humidity max. 80 % (non-condensing)
Response time* T90 ‹ 1 sec Power 230 V/50 Hz or 115 V/60 Hz 500 W
Lower detection Limit* < 1 ppm for H2, He Dimension (WxHxD) 534 x 743 x 639 mm
Concentration drift ‹ ± 3 % over 24 h Weight 65 kg

* depending on the measured components, concentrations, system setup and the settings

Reference Customers (excerpt)


Product flyer