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Welding purge monitor

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article image Measures oxygen levels accurately to 0.1% (1000ppm).

HUNTINGDON Fusion Techniques, represented in Australia by Perfect Welding Products , has released the MkV version of the Argweld gas measuring equipment for use in monitoring oxygen content during welding.

The weld purge monitor is robust but portable, weighing 200g. It can measure oxygen levels accurately down to 0.1% (1000 ppm) but will indicate down to 0.01% (100 ppm).

It is supplied with its support equipment in a protective carrying case and offers temperature compensation, continuous or sample reading and a self-calibrating function.

Removal of oxygen from the region around the joint is essential if high-quality welds are to be produced. Various techniques are in use for eliminating oxygen and purging using argon is one such possibility.

Whichever method of oxygen removal is used however there remains a need to monitor residual gas levels accurately before and during the welding operation. Some metals are more sensitive to becoming discoloured or contaminated due to the presence of oxygen. Stainless steels and nickel alloys are particularly vulnerable.

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