Meters for cold and heated drinking and non-drinking water supplies, Part 4: In-service compliance testing
冷热饮用水和非饮用水供水仪表第4部分:在用符合性试验
发布日期:
2007-03-08
规定了水表和单个水表(限于20 mm水表)总体在用合规性的及时采样、测试和评估要求。
Specifies requirements for the timely sampling, testing, and assessment of in-service compliance of populations of water meters and individual meters, limited to 20 mm water meters.