- Can this fuel consumption meter can use on diesel bus?
- are there any limits to the kinds of cars/vehicles that this meter can be used with?

We are a company in HK that is in need of a solution to measure vehicle fuel consumption accurately. We need the solution to take into account or use a return line measurement. We prefer the solution to be relatively portable and with easy/straightforward installation - we plan to use such a device on multiple vehicles on multiple occasions.

Also, we would appreciate some kind of ballpark figure for a solution as we need so we can have an idea of what the possible costs will be.

Any and all information you provide on some possible solutions would be greatly appreciated.

Thank you in advance,
-Kenji