Some of them do the math for you.
The marine ones do the math for you.....and yes Towcat... we do fuel by the hour.
They are expensive calculators, but boy are they accurate.
You only need one system. The metering devices are installed after the FSV and at the return line.
They also have a total gallons burned, resetable like an ODO, or you can keep the total burn going, for like a real long trip.
Also, you can rig a system to read two systems with a switch and single gauge. Just have to install a second transducer pair if you want to separate out the tanks v. total burn. Also, also, many of these systems will give you appx. range to go calcs based on fuel consumption and tankage.
I know, not more complicated than a $30.00 HP, but, their value is knowing how far we can go offshore and make it back safely.
Depending on the model purchased, depends on how much calculatin' you want it to do.
But yeah, I agree.... even at $500.00, it's a bit steep, especially when we can buy aftermarket tranny controllers, which does far more than just reading, for $400.00.
Oh! And they come with a SPEC/DATA sheet in case you find a pump willing to cooperate with it!
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