Employee Service Time Report-Minutes to Service Vehicle

Short answer: transaction start time to transaction end time based on flow unlock (authorization) to flow lock (deauthorization) of the fuel dispensers. 

The clock starts when the employee finishes entering the employee number, vehicle number, any other required prompt response. At that moment, the RIH shows Flow on the display, the relays kick on, and the solenoid valves open so the fuel can flow. The clock is running. 

Now two timers kick in:
Pre flow timer. It waits a settable amount of time looking to see an initial volume of fluid from the pulse meter; usually 0.1 ends that timer. 
However, If the system sees no fuel during the authorized transaction and the pre flow timer expires, it ends the transaction. I don't know if that shows on the report but it would show as transaction start time plus no fuel recorded time plus pre flow timer expiration = minutes to service vehicle. 

In the next scenario we have a servicer initiate a transaction and fuel the bus. Once the fueling stops, such as the bus is full, the second timer kicks in. It's the master timer. After a settable time of no additional fuel flow detected, the RIH times out and ends the transaction. The time would show on the report as transaction start time plus fueling time plus master timer time all combined = minutes to service vehicle. A master timer could add 30-300 seconds to the time depending on how the RIH is configured. 

Another scenario is the transaction begins, fuel is dispensed, and the servicer gets into the bus moments after filling the tank and safely drives the bus out of the fuel lane. That ends the transaction by a vehicle detector reset before the master timer ends. The transaction time would then be transaction start time plus bus being filled plus time it took for servicer to drive the bus out of the lane. 

The goal of the report is to be able to review overall operational efficiency but has those elements to factor in.