H-High 高; L-Low 低;
ON 开; OFF 关;
AC-Alternating current 交流电; DC-Direct current 直流电;
FC-Fail closed 故障关; FO-Fail open 故障开;
FI-Fail indeterminate 故障时任意位置;FL-Fail locked 故障时保位;
IA-Instrument air 仪表空气; PA-Plant air 工厂空气;
MAX-Maximum zui大; MIN-Minimum zui小;
RTD-Resistance temperature detector 热电阻;
DCS-Destributed control system 集散控制系统;
ESD-Emergency Shut Down 紧急停车系统;
旋进旋涡流量计,孔板流量计,涡街流量计;
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