LEAK DETECTION SYSTEM FOR PETROL PUMP: DETECTS FLOW WHEN PUMP IS OFF

摘要

A fuel dispensing system includes a fuel reservoir (22) and a pump (24) to pump fuel from the reservoir (22) into a first leg of piping (26). A master dispenser (30) downstream of the first leg of piping has an outlet hose (38), a user-controllable switch activatable to turn on the pump to pump fuel from the reservoir to the master dispenser and a satellite dispenser (70), via a meter (28) arranged to detect the flow of fuel being dispensed through the dispensers. Electronic leak detection means periodically activates the pump when it is in a non dispensing state and monitors the meter's output for detection of flow of motor fuel indicating a leak and outputs a leak detection signal when such flow is detected. In an alternative embodiment the master dispenser can be replaced with a remote metering station for the satellite dispenser. IMAGE