一、适用范围本标准适用于热线型可燃气体警报器(以下简称警报器)。这种警报器属于防爆型设备,主要用在矿山、工厂、船舶等有沼气的地方。该仪器能自动检测沼气浓度,当沼气浓度所达指定值时,能够自动发出警报。其他可燃气体,本标准原则上也适用。二、种类警报器按原理分为热传导式和燃烧式两种。其类型列于表1。 First, the scope of application This standard applies to hotline combustible gas siren (hereinafter referred to as alarm). This alarm belongs to the explosion-proof equipment, mainly used in mines, factories, ships and other biogas places. The instrument can automatically detect the concentration of biogas, when the biogas concentration reaches the specified value, it can automatically give an alarm. Other combustible gases, this standard is also applicable in principle. Second, the type of alarm according to the principle is divided into two types of heat conduction and combustion. The types are listed in Table 1.