根据爆炸性气体/空气混合物的存在或可能性，提供危险区域分类指南。（根据AS 2430.1-1987，并根据新西兰的要求进行了修改）。认可的电气安全标准

Provides guidance for the classification of hazardous areas according to the existence or likelihood of the existence of an explosive gas/air mixture. (Based on AS 2430.1-1987 with amendments to suit New Zealand requirements). Approved electrical safety Standard