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Full Description

BS EN ISO 21904-3:2018 defines a laboratory method for measuring the welding fume capture efficiency of ontorch extraction systems. The procedure only prescribes a methodology, leaving selection of the test parameters to the user, so that the effect of different variables can be evaluated.

It is applicable to integrated on-torch systems and to systems where a discrete extraction system is attached to the welding torch close to the arc area. The methodology is suitable for use with all continuous wire welding processes, all material types and all welding parameters.

The method can be used to evaluate the effects of variables such as extraction flow rate, extract nozzle position, shielding gas flow rate, welding geometry, welding torch angle, fume emission rate, etc., on capture efficiency.


Cross References:
ISO 15767
ISO/IEC Guide 98 (all parts)
ISO 6947
ISO 15011 (all parts)
ISO 5167-1
ISO 3966
CEN/TR 16013-1


All current amendments available at time of purchase are included with the purchase of this document.