1.1 These requirements cover the construction and performance of inferential ultrasonic and magnetic type residential water flowmeters intended for use in dry, indoor atmospheres, and for cold water supplies in a completely wetted pipe section when: a) Connected directly to residential sprinkler fire protection systems; or b) Connected to combined domestic plumbing and residential sprinkler fire protection service (multipurpose fire protection system) when installed as specified in the Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, NFPA 13D.
UL SUBJECT 327B-2010由美国保险商实验所 US-UL 发布于 2010-12-23,并于 2010-12-23 实施。
UL SUBJECT 327B-2010 在中国标准分类中归属于: N12 流量与物位仪表。
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