GB 20936.2-2009
Electrical apparatus for the detection and measurement of flammable gases.Part 2:Performance requirements for group I apparatus indicating a volume fraction up to 5% methane in air (English Version)

Standard No.

GB 20936.2-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2018-07

Replace By

GB/T 20936.1-2017

GB/T 20936.2-2017

Latest

GB/T 20936.2-2024

Scope

This part specifies portable, mobile and fixed type I detectors for detecting methane concentration in the air in mines. Therefore, these detectors or their components can be used in coal mines prone to gas production. The requirements and test methods applicable to the detectors included in this part are specified in Part 1. This section is limited to detectors used to detect methane in air from 0% to 5% by volume, but not exceeding 5% by volume.

GB 20936.2-2009 Referenced Document

• GB 20936.1-2007 Electrical apparatus for the detection and measurement of flammable gases- Part 1: General requirement and test methods
• GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres-Part 1: General requirements
• GB 3836.2-2000 Electrical apparatus for explosive gas atmospheres-Part 2: Flameproof enclosure "d"
• GB 3836.4-2000 Electrical apparatus for explosive gas atmospheres. Part 4: Intrinsic safety“i”

GB 20936.2-2009 history

• 2024 GB/T 20936.2-2024 Gas detectors for explosive atmospheres Part 2: Selection, installation, use and maintenance of flammable gas and oxygen detectors
• 2022 GB/T 20936.1-2022 Gas detectors for explosive atmospheres Part 1: Performance requirements for combustible gas detectors
• 2017 GB/T 20936.1-2017 Gas detectors for explosive atmospheres—Part 1: Performance requirements of detectors for flammable gases
• 2009 GB 20936.2-2009 Electrical apparatus for the detection and measurement of flammable gases.Part 2:Performance requirements for group I apparatus indicating a volume fraction up to 5% methane in air

GB 20936.2-2009 Electrical apparatus for the detection and measurement of flammable gases.Part 2:Performance requirements for group I apparatus indicating a volume fraction up to 5% methane in air was changed to GB/T 20936.1-2017 Gas detectors for explosive atmospheres—Part 1: Performance requirements of detectors for flammable gases.

GB 20936.2-2009 -All Parts