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An instrument bubble tagged as a flow controller.
Also known as: FIC instrument symbol, Flow controller symbol
On a piping and instrumentation diagram a bubble tagged FIC denotes a flow indicating controller: it displays the flow and acts on it, usually by driving a control valve.
Denotes a controller displaying flow and adjusting a final element to hold it at a set point.
Contexts: Technical drawing
Completes a control loop with a transmitter and a control valve, the three symbols together forming the smallest unit of automatic control on a drawing.
Contexts: Technical drawing
An instrument circle containing the letters F, I and C above a loop number, with a signal line leaving it.