NB/T 11630-2024Pipeline water flow monitor in coal mine (English PDF)

Preface

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

1 Scope

This document specifies the model meaning, explosion-proof type, technical requirements and specifications of pipeline water flow monitors for coal mines (hereinafter referred to as "flow monitors").

Requirements, test methods, inspection rules and markings, packaging, transportation and storage, etc.

This document applies to the design, manufacture and inspection of flow monitoring instruments used to measure pipeline water volume underground in coal mines.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document. document.

GB/T 191 Pictorial markings for packaging, storage and transportation

GB/T 1047 Definition and selection of nominal sizes of piping components

GB/T 2423.1-2008 Environmental testing for electric and electronic products Part 2: Test methods Test A. Low temperature

GB/T 2423.2-2008 Environmental testing for electric and electronic products Part 2: Test methods Test B. High temperature

GB/T 2423.4-2008 Environmental testing for electric and electronic products Part 2: Test methods Test Db. Cyclic damp heat (12 h 12 h cycle)

GB/T 2423.5-2019 Environmental testing for electric and electronic products Part 2: Test method Test Ea and guidance. Shock

GB/T 2423.10-2019 Environmental testing for electric and electronic products Part 2: Test method Test Fc and guidance. Vibration (Sine)

GB/T 3836.1-2021 Explosive atmospheres Part 1: General requirements for equipment

GB/T 3836.4-2021 Explosive atmospheres Part 4: Equipment protected by intrinsic safety type "i"

GB/T 4208-2017 Degrees of protection provided by enclosures (IP Code)

GB/T 9969 General principles for instructions for use of industrial products

GB/T 10111 Generation of random numbers and their application in product quality sampling inspection

AQ 1043 Mining Product Safety Signs and Labels

MT/T 210-1990 Basic test methods for electrical and electronic products used for communication, detection and control in coal mines

MT/T 408-1995 DC regulated power supply for coal mines

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Model meaning and explosion-proof type