矿井生产中渗出CH4 和生活中使用天燃气的泄漏可引起爆炸。事前报警尤为重要,报警器能否及时报警和其报警阈值的可靠性就更为重要, 这与保护人民生命财产密切有关。本文自行研制出配气设备、测试箱和用气相色谱分析对某厂家生产的报警器报警阈值进行了测试与研究。结果表明, 动态配气的CH4 浓度稳定。报警器在不同气象条件下, 在国家允许浓度范围内均能及时报警, 报警阈值可靠 Leakage of CH4 from production in mines and the use of natural gas in life can cause explosions. It is particularly important to report the alarm in advance. It is even more important if the alarm can be alarmed in time and the reliability of its alarm threshold, which is closely related to the protection of people’s life and property. This paper developed a gas distribution equipment, test boxes and gas chromatographic analysis of a manufacturer alarm threshold alarm were tested and studied. The results show that the CH4 concentration of dynamic gas distribution is stable. Alarm in different weather conditions, the concentration of the country can allow timely alarm, the alarm threshold is reliable