Thanks so much!
This is of great help.
Now, except for the transducers themselves, what else did you need
to get a read-out? I have an EIS engine monitor with 4 auxiliary inputs
which reads everything from zero to 5.5 volts.
Christoph #223
Hello Christoph,
David DeFord and I used two pressure transducers, one under each
seat, to
measure the fuel tank head pressures, left and right. We also have a
3-axis
accelerometer and a temperature sensor mounted with the starboard
side
pressure transducer. A micro processor samples the transducers and
displays
fuel quantity on an LCD display in the panel. We calibrated the system
by
filling the tank in 1 gallon increments, deriving formulas that
compensate
for tank shape and attitude. Although initial accuracy seemed in the +-
0.2
gallon range, we found that the pressure transducers are not very well
compensated for temperature, causing errors of up to 3 gallons at
various
temperatures. We intend to remove the unit soon and place it in an
environmental chamber to allow us to better compensate for
temperature in
software.
Note: Because our pressure transducers are located in front of the
tank, we
need the pitch accelerometer to compensate for pitch attitude. If the
pressure transducers were located near the center of the tank, fore
and aft,
this would not be needed.
Terry Seaver
A135/N135TD
Pleasanton, CA
CHRISTOPH BOTH wrote:
> Hello:
>
> I am looking for an address to contact Europa builder Dave DeFord,
> A135?
>
> In particular, I like to find out about the experience and part source for
> the Honeywell 26PCAFA6D pressure transducer to use to measure
> the head pressure of fule in the tank.
>
> Anyone out there who can point me to the right address or part
> source? Has anyone been suuccessful using this method or part to
> accurately meansure fuel content? Is it reliable in the readings, and
> impervious to fuel? How much does the part cost?
>
> Christoph Both
> #223
> Wolfville, Nova Scotia, Canada
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