MT/T 531-1995 Coal mining speed sensor

GB 1497 GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 2829-2002 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability) GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres—Part 1:General requirements GB 3836.1-2010 Explosive atmospheres—Part 1:Equipment—General requirements GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements GB 3836.4-2000 Electrical apparatus for explosive gas atmospheres—Part 4:Intrinsic safety“i” GB 3836.4-2010 Explosive atmospheres—Part 4:Equipment protection by intrinsic safety "i" GB/T 3836.4-2021 Explosive atmospheres—art 4:Equipment protection by intrinsic safety “i” GB/T 5080.1-1986 Equipment reliability testing—General requirements GB/T 5080.1-2012 Reliability testing—Part 1:Test conditions and statistical test principles GB/T 5080.7-1986 Equipment reliability testing Compliance test plans for failure rate and mean time between failures assuming constant failure rate GB/T 12173-1990 Mining electrical apparatus for non hazardous area GB/T 12173-2008 Mining electrical apparatus for non hazardous area GB/T 13384-1992 General specifications for packagings of mechanical and electrical products GB/T 13384-2008 General specifications for packing of mechanical and electrical product MT 209-1990 The general technical requirements for electrical products used in coal mine communication, detection, and control MT 210-1990 The basic test methods for electrical products used in coal mine communication, detection, and control MT 286-1992 The method for preparing model numbers and management methods for coal mine communication and automation products MT/T 408-1995 Coal mine DC voltage stabilizer power supply GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 2829-2025 Sampling procedures and tables for periodic inspection by attributes(Apply to inspection of process stability)