إجراء مقترح من الصين: آلات وأجهزة لفرز أو غربلة أو فصل أو غسل أو جرش أو طحن أو…

This document specifies the terms and definitions, general requirements, and technical requirements for instruments and meters used in coal mines, describes the corresponding test methods, and specifies the inspection rules, on-site operation and maintenance management, and marking requirements. This document applies to the manufacture of self-powered coal mine instruments and meters for observing, measuring, calculating and detecting various physical quantities, material compositions, and physical property parameters.