气体检测报警仪关乎工业生产过程的生命财产安全,而型式评价是防止不合格产品进入市场的有效手段。选择甲烷测定器(可燃气体检测报警器)、二氧化硫气体检测仪、一氧化碳检测报警器、硫化氢气体检测报警仪这四种最常见的气体检测报警仪作为对象,通过分析实际工作中遇到的部分典型案例,从试验样机、法制管理要求、计量要求和通用技术要求等方面总结了型式评价中需要注意的问题,以期对相关企事业单位提供参考。Gas alarm detectors are related to the safety of life and property in the industrial production process, and pattern evaluation is an effective way to prevent unqualified products from entering the market. In order to provide reference for relevant enterprises and institutions, four most common gas alarm detectors, namely methane detectors (combustible gas alarm detectors), sulfur dioxide gas detectors, carbon monoxide gas alarm detectors, and hydrogen sulfide gas alarm detectors, were selected as objects, some typical cases encountered in practical work were analyzed, and the issues that need to be paid attention to in pattern evaluation were summarized from the aspects of experimental prototype, legal management requirements, metrology requirements, and general technical requirements.