Lots of invalid alarms seriously disturb normal process operation,and lead to frequent spurious shutdown,or cause danger occuring.Serious economic loss will be involved,even to be developed to potential safety hazard.The root cause of all kinds of invalid alarm are discussed comprehensively.The optimized solutions and implementation details are provided including reasonable designing alarm setting,static and dynamic alarm suppression,signal filter and de-bounce function,instrument accuracy and range.To eliminate all kinds of invalid alarms can improve the automatic management of enterprises greatly,and achieve the intrinsic safety.
invalid alarmresponse timeprocess safety timealarm suppressionsignal filterdead band
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维普
