Tanks for liquefied gas must be equipped with a manual top level monitoring device and an automatic, component-tested overfill safety device according to VdTÜV Code of Practice 100 part 1.During filling, the overfill safety device is connected to the meter amplifier at the tank truck via a line by means of a shrouded-contacts plug, and a voltage is applied to the limit indicator. In accordance with the resistance of the probe, a current occurs. |
