G4 PHOENIX DH

Accurate and rapid diffusible hydrogen measurements allow you to avoid embrittlement, hydrogen-induced cracking and other costly failures.

Hydrogen-induced damage is a wide-spread and dreaded phenomenon. During welding, hydrogen is generated from the dissociation of water vapor (e.g. humidity) or hydrocarbons in the welding arc, and the molten metal can rapidly pick up hydrogen. Once in the metal, hydrogen atoms can diffuse swiftly inside the microstructure of the metal. Diffusible hydrogen causes hydrogen induced cracking (also known as cold or delayed cracking), where components fail under the influence of mechanical stress - suddenly and without prior indication. Thus, diffusible hydrogen is critical to assess because of embrittlement, hydrogen induced or assisted cracking (HIC/HAC) or hydrogen delayed fracture among other damaging effects.

The G4 PHOENIX DH, utilizing carrier gas warm extraction for a rapid and automatic determination of diffusible hydrogen in a wide variety of matrices.

Key Benefits:

• 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 option
• Automatic and reliable gas calibration with hydrogen or helium over the entire measurement range by the integrated gas dosing unit with 10 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