Volvo D2-50F :What’s the flow rate spec of the diesel pump

[CaptainRivet]

Hi,
What’s the flow rate of the diesel pump of the Volvo D2-50F. Cannot find it anywhere.
Looking to monitor the diesel consumption and for that I need to know the flow rate spec of the diesel pump on the D2-50F so I can look for the right spec for the flow sensor.
Expect 5 to 30l per hour, correct?
Especially the minimum value at idle is important.
Thank you.