Our innovative G4 PHOENIX DH hot extraction analyser is the right solution for accurate and rapid diffusible hydrogen measurement to avoid embrittlement, hydrogen-induced cracking, and other costly failures.

The highly sensitive thermal conductivity detector allows analysis down to a sub-ppm range, while the optional mass spectrometer allows detection limits in the low ng/g range. It is suitable to accept large samples such as sheet metal or welding specimens according to AWS A4.3.

Our G4 PHOENIX DH is utilising carrier gas warm extraction for rapid and automatic determination of diffusible hydrogen in a wide range of matrices.

Key Benefits:

  • Reliable, adjustable ranges, drift-free
  • Precise temperature control, flexible heating programmes, accepts large sample
  • Residual hydrogen in multi-phase duplex steels
  • Pre-cleaning using regeneratable molecular sieve
  • Easy, precise gas calibration without standards, traceable to p, T, V
  • Fast cool down, standard tap water compatible, water-saving design with water-stop valve, chiller also possible
  • High-end, long-term stable thermal conductivity detector (TCD) with dedicated reference gas channel, heat exchanger, and ng/g analysis capabilities
  • Unique infrared (IR) furnace with low thermal mass for accurate temperature control, programmable rapid heating (and cooling) up to 900°C accepting large samples
  • Optional thermocouple kit for direct sample temperature readings
  • Additional resistance heated furnace for higher temperatures up to 1100 °C as an option
  • Automatic and reliable gas calibration with hydrogen or helium over the entire measurement range by the integrated gas dosing unit with ten different volumes
  • Optional interface to external sampling canisters to cover the GC method of ISO 3690
  • G4 PHOENIX MS with quadrupole mass spectrometer improves the detection limit by more than one order of magnitude, enabling evaluation of ultra-low diffusible hydrogen concentrations or isotopes and studies of different hydrogen traps in steel

Why do I need diffusible hydrogen analysis?

Hydrogen-induced cracking and embrittlement are dangerous phenomena. Although high-strength steels and oxygenated copper grades are precisely susceptible to hydrogen embrittlement, an uptake of diffusible hydrogen affects many more metals but depending to a large extent on the environmental and process conditions, like ambient moisture. There is always a risk of introducing hydrogen in every mechanical, thermal, and galvanic manufacturing step, especially during welding and soldering.

The rapid method applied by the G4 PHEONIX can deliver results in less than 30 min, whereas traditional methods require several days. Thus, it is the only method allowing feasible pre-welding testing for diffusible hydrogen. It allows users to optimize their processes to avoid costly failures before they occur.

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