In a tank for liquid fuel, particularly a tank for LPG in a system for supply
of LPG to the internal-combustion engine of a motor vehicle, the level-sensor device
comprises a floating member guided so as to move in a substantially vertical direction
within the tank according to the variations of level, and transducer means consisting
of an aligned series of reed relays that are activated selectively by one or more
permanent magnets carried by the floating member.
