摘要
流量仪表中的小信号切除,是为了克服各种原因引起的小信号所导致的不良后果。各种不同原理的流量计,产生小信号现象的机理也不同。同一种原理的流量计,由于其精确度、仪表品质、被测介质、现场环境以及安装情况的差异,所以零点不确定性也有很大差异。调试人员应根据具体要求和具体条件合理设定切除点。
The purpose of elimination of small signals in flowmeters is to overcome the bad results caused by ＂fictitious＂ because of various reasons. Different flowmeter built by different principle has different mechanism forming ＂fictitious＂. Even in flowmeters with the same principle, it is still possible to get undetermined zero indication because of the different accuracy, quality, measured media, environment and installation condition. The test engineers should reasonably setup the elimination point based on specific requirement and situation.
出处
《自动化仪表》
CAS
2007年第10期51-54,共4页
Process Automation Instrumentation
关键词
流量测量
零点漂移
小信号切除
切除模式
最优化
Flow measurement Zero drift Small signal elimination Elimination mode Optimization
