What do FC, FO, NC, and RO stand for?

2019-06-27View Original

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What do FC, FO, NC, and RO stand for?

Reply #22019-06-27

FC – Fail Close, FO – Fail Open,

Reply #32019-06-28

Common abbreviations used in instrumentation; they do not represent other technical abbreviations. NC – Normally Closed: in its normal state, it is in a closed position and not energized. RO – Restrict Orifice: a flow-limiting orifice plate

Reply #42019-06-28

FC: Fault off; FO: Fault on; NC: Normally closed; NO: Normally open

Reply #52019-06-28

In some places of RO, it is locked on

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