Standard No.:	GB/T 778.1-2007
English Name:	Measurement of water flow in fully charged closed conduits—Meters for cold potable water and hot water—Part 1:Specifications
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
Chinese Classification:	N12    Flow capacity and material level instrument
Professional Classification:	GB    National Standard
ICS Classification:	91.140.60 91.140.60    Water supply systems 91.140.60
Source Content Issued by:	AQSIQ; SAC
Issued on:	1996-1-1
Implemented on:	2008-5-1
Status:	superseded
Superseded by:	GB/T 778.1-2018 Meters for cold potable water and hot water—Part 1:Metrological requirements and technical requirements
Superseded on:	2019-1-1
Superseding:	GB/T 778.1-1996 Measurement of water flow in closed conduits--Meters for cold potable water--Part 1:Specifications
Target Language:	English
File Format:	PDF
Word Count:	16500 words
Translation Price(USD):	420.0
Delivery:	via email in 1~5 business day

GB/T778的本部分规定了饮用冷水水表和热水水表的术语和定义、技术特性、计量特性和压力损失要求。
本部分适用于最高允许工作压力(MAP)大于等于1MPa1)(管道公称通径DN≥500mm的水表为0.6 MPa)、最高允许工作温度(MAT)饮用冷水水表为30℃、热水水表按等级最高可达到180℃的各种水表。
GB/T778的本部分也适用于基于电或电子原理以及基于机械原理带电子装置、用于计量饮用冷水和热水实际体积流量的水表。本部分同样适用于通常作为选装件的电子辅助装置。
GB/T778的本部分的技术条件适用于被定义为积算计量仪表、采用任何技术连续测定流过的水体积的水表。