Has the system been reliable? We had some initial teething problems but Navman was very helpful and worked closely with Landau (Hamble Point) who did an excellent installation. Navman even visited the boat to ensure all was well. It turned out that we had a faulty sensor that was replaced and then all worked as it should. One absolute must is that a very clean fuel line cut is required – any particles will cause problems. We found that one of the read outs fluctuated rapidly whilst underway. This was solved by altering the damping (a function in the display). The system now works very well and helped us to diagnose a prop pitch problem.
We have correlated the amount of fuel put into the tanks with the amount the system says we have used. It seems very accurate. The system gives us valuable cruising data - digital fuel gauges - range of the vessel whilst underway (at that speed and in those conditions) - fuel used (each tank and total, amount remaining) - economy (miles/litre) - accurate rpm for each engine to help make them match
The economy function is useful. You can see how much fuel is being used and can adjust speed to be more economical. For us consumption v rpm is a straight line but we know how much fuel we can save by dropping from say 2500 to 2300 rpm and a couple of knots speed! It is quite a lot.
Don't forget though that any fuel used by a generator or heating system will not be measured by the system so build that into the calculations.
As for compatibility, I think it is best to ask Navman about that.
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Re: Navman fuel flow meter- Any experiences?
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