Tank level sensor for ships Enraf Marine Systems
CT801LB/S-B

The CT801LB/S-B transmitter is designed to be mounted on the top of
the tank. The CT801LB/S-B allows a remote level measurement using a
4-20 mA analog output, while keeping the principle of bubbling.
The lack of (air or neutral gas) supply pressure is not a problem for the
CT801LB/S-B. An automatic valve is activated as soon as the supply
pressure falls below 1 bar. When this valve is closed, the liquid cannot
return back to the bubbling line up to the transmitter.
For pressurized tanks, the level is deduced from the differential
pressure measurement between the bubbling probe and the pressure
of the inert gas above the liquid. The air or neutral gas supply is
protected by means of a filter.

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