1.范围1。1本标准概述了用于检测空气中有毒气体和/或氧气浓度的便携式电气仪器的构造、标记和测试细节。根据《加拿大电气规范》第一部分和第二部分的规定，这些仪器可用于I类危险场所和气体矿山。1.2本标准适用于具有不充电或充电型电池的电池驱动仪器。1.3本标准适用于旨在提供指示、报警或其他输出功能的单个或多功能便携式气体检测仪器，其目的是尽量减少或防止暴露在富氧或缺氧大气或有毒气体中的可能性。1.4本标准不适用于实验室或科学气体- 仅用于分析或测量的检测仪器，或仅用于过程控制目的的仪器。1.5本标准不适用于气体检测仪器可能连接的中央监控、数据采集或其他类似系统。

1. Scope1.1This Standard outlines the details of construction, marking, and testing of portable electrical instruments for sensing the presence of toxic gas(es) and/or oxygen concentrations in air. These instruments may be used in Class I hazardous locations and gaseous mines in accordance with the Rules of the Canadian Electrical Code, Parts I and II.1.2This Standard applies to battery-operated instruments having a battery of a nonrechargeable or a rechargeable type.1.3This Standard applies to single or multifunction portable gas-detection instruments intended to provide an indication, alarm, or other output function, the purpose of which is to minimize or prevent the possibility of exposure to an oxygen-enrich ed or oxygen-deficient atmosphere, or a toxic gas.1.4This Standard does not apply to laboratory or scientific gas-detection instruments used only for analysis or measurement, or instruments used solely for process control purposes.1.5This Standard does not apply to the central monitoring, data acquisition, or other similar systems to which the gas- detection instrument may be connected.