Valid

NB/T 11449-2023Test method of pipeline gas sensor for mine (English PDF)

矿用管道气体传感器试验方法

Preview PDF

This is a limited preview

Buy now to download the full PDF (15 pages)

Need quotation for your management?

Get a formal quotation for NB/T 11449-2023 in 30 minutes.

Issued by

NEA

Level / Type

Industry · Recommended

Issue date

December 28, 2023

Implementation date

June 28, 2024

Scope

NB/T 11449-2023 is the English-translated version of 矿用管道气体传感器试验方法.

NB/T 11449-2023 is the Chinese energy industry standard that sets out how gas sensors mounted on mine gas extraction pipelines are tested.

It fixes the test conditions and main instruments, then describes each check: appearance and structure, stability and basic error of the displayed value, operating voltage range, transmission distance, response time, alarm function, insulation resistance, dielectric strength, pipeline pressure and working stability, and the influence of dust concentration and wind speed.

Environmental tests cover operating and storage temperature, cyclic damp heat, vibration, impact and drop, followed by anti-interference and explosion-proof tests, with an informative annex on pipeline test equipment.

It covers sensors used in underground and open-pit coal mines and other workplaces. Issued on 28 December 2023, it has applied since 28 June 2024.

Found what you need?

Document preview — NB/T 11449-2023

National Standard of the People's Republic of China

Classification: D 98

Issued by: National Energy Administration of the People's Republic of China

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Test conditions
5 Main test instruments
6 Appearance and structure inspection
7 Stability and basic error of displayed value
8 Operating voltage range test
9 Transmission distance
10 Response time determination
11 Alarm function test
12 Insulation resistance test
13 Dielectric strength test
14 Pipeline pressure test
15 Determination of pipeline working stability
16 Dust concentration impact test
17 Wind speed effect test
18 Operating temperature test
19 Storage temperature test
20 Cyclic damp heat test
21 Vibration test
22 Impact test
23 Drop test
24 Anti-interference test
25 Explosion-proof test
Appendix A (Informative) Test equipment for pipelines

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 test conditions and test methods for mining pipeline gas sensors.

This document is applicable to the test of mining pipeline gas sensors used in underground coal mines, open-pit coal mines and other workplaces.

2 Normative references

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

For documents with no 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. in this document.

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 (12h 12h cycle)

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

GB/T 2423.7-2018 Environmental testing Part 2: Test methods Test Ec. Impact caused by rough operation (mainly used for Equipment type sample)

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

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

GB/T 3836.2-2021 Explosive atmospheres Part 2: Equipment protected by flameproof enclosure "d"

GB/T 3836.3-2021 Explosive atmospheres Part 3: Equipment protected by increased safety "e"

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

GB/T 4208-2017 Enclosure protection degree (IP code)

GB/T 17626.3-2023 Electromagnetic compatibility test and measurement technology Part 3: Radio frequency electromagnetic field radiation immunity test

GB/T 17626.4-2018 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test

GB/T 17626.5-2019 Electromagnetic compatibility test and measurement technology surge (impact) immunity test

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

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Mine pipeline gas sensor

Sensors that continuously monitor gas concentration in mine gas extraction pipelines.

3.2 Pipeline test device

A test device that can simulate gases such as methane, carbon monoxide, and environmental conditions such as pressure and wind speed in the gas extraction pipeline when it is working.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

MT/T 210-1990 · MT/T 772-1998

Similar standards

GB 40881-2021|NB/T 11630-2024|GB/T 50451-2017|NB/T 11637-2024|NB/T 11639-2024|NB/T 11325-2023

How to Download NB/T 11449-2023

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.