多点巡回检测报警仪,能够自动巡回检测生产过程各种参数,并能作越限自动报警,因此,自问世以来,它在各工业部门中,逐渐得到较广泛的应用。但是,过去生产的多点巡回检测报警仪,往往结构复杂,体积庞大,价格较贵,同时,由于线路复杂,因之也降低了可靠性,而且,一出故障,只好停机,使全部检测点停检。由于它上述缺点,使其应用范围受到限制。另一方面,由于复杂和昂贵,也难于普通应用于中小型企业之中。 Multi-point circuit detection alarm, can automatically detect various parameters of the production process, and can be more automatic alarm limit, therefore, since its inception, it has gradually been widely used in various industrial sectors. However, in the past, the multi-point tour detection alarm was often complicated in structure, large in size and expensive in price. At the same time, the reliability of the circuit was also reduced because of the complicated circuit. Moreover, once a fault occurred, Suspension. Due to its disadvantages, its application is limited. On the other hand, due to its complexity and cost, it is difficult to apply it to small and medium-sized enterprises in general.