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在工业生产中为了保障机器设备的正常运转,对生产过程中的某些量(如温度、压力、流量、液位等)需要经常测量,并对其极限值不断进行监视;一旦超越,即应发出声、光警报信号(引起操作人员注意,从而及时调整控制系统);有些则要求在发出警报的同时,瞬时或延时给出跳闸信号,进行自动停车,以避免事故的发生。本装置便是
In industrial production in order to ensure the normal operation of machinery and equipment, some of the production process (such as temperature, pressure, flow, level, etc.) need to be measured regularly, and continue to monitor the limit values; once beyond that should be Send out the sound and light alarm signal (cause the operator to pay attention, so as to adjust the control system in time); while some require to give an alarm at the same time, instantaneous or delayed trip signal is given for automatic parking to prevent accidents. This device is