Protective-gas annealing

As the name calls for, protective gas is for protecting products which are heat-treated. Normally this protection refers to undesired oxidationProtective gases may be nitrogenargon or mixtures of nitrogen and hydrogen. The desired oxidation potentials are in the range of ppm to 10E-30 bar oxygen partial pressure.

With classical neutral annealing, the required oxygen partial pressure of the protective gas has to be lower than the equilibrium partial pressure of the treated metal. With it, that alloy element is considered which is most sensitive to oxygen.


Oxygen Measurement | Compact measuring device

The compact laboratory GSM-touch as table variant


Combination version

The measuring device GSM as installation variant with connection to an external sensor. According to the case of practical use, there has to be connected an extractive sensor or an inline sensor.