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.
关键词
无效报警/响应时间/安全时间/报警抑制/信号过滤器/死区
Key words
invalid alarm/response time/process safety time/alarm suppression/signal filter/dead band
维普
万方数据