MT/T 721-1997 Abolished Industry standards-Coal

MT/T 721-1997 Thermal conductivity-based high-concentration methane sensor for gas extraction

Publish Date: 1997-12-30 Implement Date: 1998-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: MT/T 721-1997

Standard Type: Industry standards

Standard Status: Abolished

is_force_gb: no

CCS Name: Special equipment and supplies for coal mines

ICS Name: Electric equipment for use in explosive environments

Publish Date: 1997-12-30

Implement Date: 1998-07-01

Pages: 12 pages

Development Information

Word Count: 15 Thousand words Pages: 12 pages

Referenced Standards

GB 191-1990 GB/T 2423.1-1989 GB/T 2423.2-1989 GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products—Test Db:Damp heat, cyclic GB/T 2423.5-1989 GB/T 2423.8-1989 GB/T 2423.10-1989 GB 3836.1-1983 GB 3836.2-1983 GB 3836.3-1983 GB 3836.4-1983 GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 6388-1986 Transport package shipping mark GB/T 10111-1988 Methods for random sampling by utilizing dices of random number MT/T 408-1995 Coal mine DC voltage stabilizer power supply

Related Standards

GB 5590-1985 Replaced

GB 5590-1985 Mining type flameproof electric magnetic starters

Publish Date: 1985-11-20

GB 3836.9-1990 Replaced

GB 3836.9-1990 Electrical apparatus for explosive atmospheres Encapsulated electrical apparatus "m"

Publish Date: 1990-08-27

GB 3836.11-1991 Replaced

GB 3836.11-1991 Electrical apparatus for explosive atmospheres-Method of test for ascertainment of maximum experimental safe gap

Publish Date: 1991-05-27

GB 3836.12-1991 Replaced

GB 3836.12-1991 Electrical apparatus for explosive atmospheres—Classification of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents

Publish Date: 1991-05-27

GB 3836.13-1997 Replaced

GB 3836.13-1997 Electrical apparatus for explosive gas atmospheres—Part 13:Repair and overhaul for apparatus used in explosive gas atmospheres

Publish Date: 1997-12-30

MT 703-1997 Replaced

MT 703-1997 Technical condition of electro-chemical type carbon monoxide instrumentation for coal mine

Publish Date: 1997-12-30