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在工业生产中,为了使机器设备正常工作,或使各个参数(流量、温度、压力、液位等)在规定的数值内,对生产过程中的某些量需要进行极限监视,只能允许它们在规定的范围内,一旦越出极限值时,要求报警系统给出声光信号,引起操作人员注意,从而及时处理或调整控制系统,以免造成事故。这里介绍的无触点信号报警系统的输入信号是电触头信号。它与各种电触点式控制、检测仪表配套使用。当被监视量偏离极限值时,监控仪表(或磁力起动器)触点动作,本系统能即及时发出灯光和音响报警信号,操作人员觉察后,掀一下音响消除按钮2AN后音响停
In industrial production, certain quantities in the production process need to be monitored for limits in order to operate the machine and equipment properly, or to set various parameters (flow, temperature, pressure, liquid level, etc.) Within the specified range, once out of the limit values, the alarm system is required to give the sound and light signals, causing operator attention, so that timely handling or adjustment control system to avoid accidents. The input signal of the contactless signal alarm system described here is the electrical contact signal. It is used with a variety of electrical contact control, instrumentation supporting. When the monitored amount deviates from the limit value, the monitoring instrument (or magnetic starter) contact action, the system can promptly emit light and sound alarm signal, the operator aware, lift the sound after eliminating the button 2AN sound stop