Process Safety \ Signaling \ FOS Fibre Optic Rupture Membrane
The fibre optic FOS rupture membrane is used to monitor leakages and the response of rupture discs under highly corrosive conditions and in hazardous areas where electrical connections are not possible.
The signaling element carries no current and consists of a glass fibre with a thickness of < 250 μm. When the rupture disc opens, the optical fibre circuit tears and the circuit is broken.
The downstream evaluation unit transmits a signal, which can be used to trigger visual or acoustic alarms and to shut down the plant.
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