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S401报警给定器系西安仪表厂DDZ—S系列仪表之一,其输入信号为1～5VDC,与给定值进行比较,越限时进行1点(上限或下限)或二点(上下限、上上限、下下限)的报警动作,前面装有继电器工作指示灯,以确认工作情况。
S401 alarm setter is one of the DDZ-S series instruments in Xi’an Instrument Factory. The input signal is 1 ~ 5VDC, compared with the given value, 1 point (upper or lower limit) or 2 points Upper limit, lower limit) alarm action, in front of the relay work indicator to confirm the work.