NB/T 11539-2024General technical requirements for mining level sensors (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 for standardization documents" Drafting.

1 Scope

This document specifies the terms and definitions, product models and classifications, technical requirements, test methods, inspection rules, markings, Packaging, transportation and storage, etc.

This document applies to non-contact mining level sensors (hereinafter referred to as sensors) used in coal mines, non-coal mines and other workplaces.

2 Normative references

The contents of the following documents constitute 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.

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

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 method Test Db Cyclic damp heat (12h 12h cycle)

GB/T 2423.5-2019 Environmental testing Part 2: Test method Test Ea and guidance. Impact

GB/T 2423.10-2019 Environmental testing Part 2: Test methods Test Fc. Vibration (sinusoidal)

GB/T 2829-2002 Periodic inspection sampling procedures and tables (applicable to the inspection of process stability)

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

GB/T 3836.2 Explosive atmospheres Part 2: Equipment protected by flameproof enclosure "d"

GB/T 3836.3 Explosive atmospheres Part 3: Equipment protected by increased safety "e"

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

GB/T 3836.9 Explosive atmospheres Part 9: Equipment protected by encapsulation type "m"

GB/T 4208 Enclosure protection grade (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

GB/T 12173 General electrical equipment for mining

GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test

GB/T 17626.3 Electromagnetic compatibility test and measurement technology Part 3: Radio frequency electromagnetic field radiation immunity test

GB/T 17626.4 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test

GB/T 17626.5 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test

GB/T 18271.2-2017 General performance evaluation methods and procedures for process measurement and control devices Part 2: Under reference conditions Test

AQ1043 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 772-1998 Main performance test methods of coal mine monitoring system

MT/T 899 Information transmission device for coal mines