GB/T 24789-2022General rules for equipping and managing of the water measuring instrument in water-use organization (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB 24789-2009 "General Rules for the Equipping and Management of Water Measuring Instruments for Water Units", compared with GB 24789-2009, except In addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- Changed the scope of application of the standard (see Chapter 1, Chapter 1 of the 2009 edition);

--- Changed the principles of water measuring instruments (see Chapter 4, 4.1 of the 2009 edition);

--- Increased the measurement range and the requirements for the provision rate of measuring instruments in the agricultural and service industries (see 5.1 and 5.3);

1 Scope

This document specifies the general rules for the allocation and management of water measuring instruments for water use units, the measurement scope and the requirements for the allocation rate of measuring instruments, as well as the measurement management requirements.

This document applies to the provision and management of water measuring instruments for agricultural, industrial and service water units.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 778.1 Drinking cold water and hot water meters - Part 1: Measurement requirements and technical requirements

GB/T 21303 Specification for water measurement of irrigation channel system

GB/T 21534 Industrial Water Saving Terms

JJG 1030 Ultrasonic Flowmeter Verification Regulations

JJG 1033 Electromagnetic Flowmeter Verification Regulations

3 Terms and Definitions

GB/T 21534 and the following terms and definitions apply to this document.

4 General

The general principles for the provision of water measuring instruments include.

a) Meet the measurement requirements for water intake from different water sources, including conventional water sources and unconventional water sources;

b) Meet the water metering requirements for different water quality and water prices;

c) Meet the water metering requirements for secondary water use units (functional areas) and main water use equipment (water use systems);

d) Meet the requirements of water volume measurement for the water intake hub of the irrigation area and the water outlet of the main irrigation channel (pipeline);

e) Give priority to meeting the water metering requirements of areas and equipment and facilities with large water consumption;