DANSK DS/ENV 50184+CORR. PDF

This Standard recommends validation grades and validation methods for the following two classes of arc welding power sources, equipment and accessories: a) equipment constructed, calibrated and used to the accuracy specified in BS 638:Part 10:1990; this equipment classification is called grade 1 (standard grade); b) equipment constructed in accordance with BS 638:Part 10:1990 but calibrated to a higher standard of accuracy than required by BS 638:Part 10:1990 and applied to tasks requiring greater precision of operation; it is called grade 2 (precision grade).