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Example:
* You start your flight with full tank(s) and go fly.
* You land and pull up to the pumps, taking on 30.0 gallons of fuel.
* The FP-5L indicates you used 26.9 gallons since fill up, indicating a 3.1 gallon error.
* You enter the "Auto Calibrate Mode" (see below) & change display from 26.9 to 30.0 (pump reading).
* When you exit the "Auto Calibrate Mode" the New K Factor is displayed for 3 seconds.
Note: If you want the FP-5L to automatically calibrate the K Factor, you must enter the "Auto Calibrate Mode"
before entering the "Add Fuel Mode." When you exit the "Add Fuel Mode" the "Fuel Used Since Fill Up" will be
cleared and the FP-5L will not be able to calculate the new K Factor.
Note: When calibrating the K Factor it is important to fill the tank(s) to same level each time (which is not always
easy). Some variables are: 1. How level the wings are during refueling. 2. The affects of any crossover tubes.
3. The ability of the line attendant to fill the tank to the same mark. 4. The shape of the tank and the dihedral of
the wings.
Normally you will only need to calibrate the K Factor during the first three or four tanks
of fuel after the initial installation. The FP-5L uses a progressive algorithm to calibrate the K Factor and to keep
the instrument from hunting for the correct K Factor. To enter the "Auto Calibrate Mode", perform the following
steps:
A. Select the “REM” display mode.
B. Momentarily push both the
"F. to DES" and "F. RES" buttons
at the same time.
The display will blink “Add."
C. While pushing and holding the "F.
to DES" button, push the "STEP"
Switch right or left to display
"Auto."
D. Tap either one of the buttons and
the FP-5L will display the "Fuel
Used Since Fill Up" according to
its current calibration. The blinking
left digit indicates that you may
program this digit.
E. Program the display to show the fuel you
actually used as indicated by the fuel pump as follows:
a)
Select a Digit - The Right and Left "F. to DES" and "F. RES" buttons move the blinking digit to
the right or to the left.
b) Advance a Digits Count - Moving the "STEP Switch" to the right will increase the blinking digits
count by one and moving the "STEP Switch" to the left will decrease the blinking digits count by
one. After the blinking digit reaches 9 it will reset to 0.
26.9
Gal
Blinking Digit
Blinking
Display
Step Switch
Toggles the
Display
between
"Add"
and "Auto."
AUto
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