Standard No.:	GB/T 778.1-2007
Chinese Name:	封闭满管道中水流量的测量饮用冷水水表和热水水表 第1部分:规范
English Name:	Measurement of water flow in fully charged closed conduits—Meters for cold potable water and hot water—Part 1:Specifications
Professional Classification:	N12 Flow capacity and material level instrument
Professional Classification:	GB National Standard
ICS Classification:	91.140.60 Water supply systems
Issued by:
Issued on:	1996-01-01
Implemented on:	2008-05-01
Status:	ABOLISHED
Replace:	GB/T778.1-1996 Measurement of water flow in closed conduits--Meters for cold potable water--Part 1:Specifications
Replace By:	GB/T778.1-2018 Meters for cold potable water and hot water—Part 1:Metrological requirements and technical requirements
Replace By Date:	2019-01-01
Language:	English
File Format:	PDF
Word Count:	18000 words
Price(USD):	540 (USD)
Delivery:	via email in 1-5 business day

前言Ⅲ
1 范围1
2 规范性引用文件1
3 术语和定义1
4 技术特性7
4.1 管道式水表7
4.2 同轴水表9
4.3 压力损失10
5 计量要求10
5.1 计量特性10
5.2 最大允许误差11
5.3 零流量积算读数12
5.4 额定工作条件(ROC) 12
5.5 流动剖面敏感度等级13
5.6 电子水表和带电子装置水表的要求14
6 技术要求15
6.1 水表的材料和结构要求15
6.2 耐久性15
6.3 水表的调整15
6.4 检定标记和防护装置15
6.5 电子封印15
6.6 指示装置15
6.7 带电子装置的水表17
6.8 说明性标志22
附录A (资料性附录) 同轴水表集合管23
附录B (资料性附录) 水表的结构特点和实际流量25
附录C (规范性附录) 检验装置26
附录NA (资料性附录) 本部分流量参数与GB/T778.1-1996的对照29
参考文献31