This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transport and storage of speed sensor for coal mine.
It is applicable to speed sensor for coal mine (hereinafter referred to as speed sensor).
2 Normative references
GB 191 Packaging - Pictorial marking for handling of goods
GB 1497 The basic standard for low-voltage apparatus
GB 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of stability for productive process)
GB 3836.1 Electrical apparatus for explosive atmospheres - General requirements
GB 3836.4 Electrical apparatus for explosive atmospheres - Intrinsically safe circuits and electrical apparatus i
GB 5080.1 Equipment reliability testing - General requirements
GB 5080.7 Equipment reliability testing - Compliance test plans for failure rate and mean time between failures assuming constant failure rate
GB 12173 Mining electrical apparatus for non hazardous area
GB/T 13384 General specifications for packing of mechanical and electrical product
MT 209 General technical requirements of electric and electronic products used for communication, detection and control in coal mine
MT 210 Basic testing methods for electric and electronic products used for communication, detection and control of coal mine
MT 286 Compilation methods and management measures for models of communication and automation products for coal mine
MT 408 Stabilized DC power supply for coal mine
3 Product classification
3.1 Model
In accordance with MT 286.
3.2 Type
3.2.1 Classified according to the type for mine;
a. intrinsically safe type for mine, marked as “ibI”;
