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abd 1 xing wa si bao jing duan dian yi fang zhi kai ji wu bao jing de yan shi dian lu
Author(s): 
Pages: 27
Year: Issue:  1
Journal: Safety in Coal Mines

Keyword:  瓦斯报警断电仪误报警热催化元件延时电路交流信号预热时间继电器动作电桥继电器触点;
Abstract: <正> ABD—1型瓦斯报警断电仪的探头部分,开机预热时间约10秒钟,由于热催化元件特性的差异,引起电桥不平衡产生一微弱交流信号,经放大后易产生误报警。有时能使继电器动作而送不上电,也有时要反复多次才
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