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than when it was tested at the factory. To ensure accuracy, which is essential, the FP-5L provides a pilot-
programmable K Factor to correct for these differences. Initially, the FP-5L's K Factor is set to a value which is
marked on a tag supplied with the flow transducer. At each fill-up the K factor may be changed using the "Auto
Calibrate Mode" or the K Factor may be manually changed in the Power-up Programming.
5. “USED” Display Mode:
In the “USED” Display Mode, the FP-5L will display the "Fuel Used Since Fill Up." By tapping either "PRG"
button the display will toggle between "Fuel Used Since Fill Up" and "Fuel Used for the Flight" (displayed with a
"F" in the front of the value). The Fuel Used for the Flight is measured from the time the aircraft's electrical
power was turned on. If the electrical power is turned off, the Fuel Used for the Flight will reset to "000." The
"Fuel Used Since Fill Up" is held in permanent memory and reset to "000" when you enter the "Add Fuel" or "Auto
Calibrate" modes.
22.8
F 8.7
"Fuel Used Since Fill Up" Displayed
Note: Tap either the "F. to DES" or the "F. RES" button to toggle between the two displays.
"Fuel Used for the Flight" Displayed
Gal
Gal
The "Fuel Used Since Fill Up" and the "Fuel Used for the Flight" is displayed as follows:
A. When set to display in Gallons the display will read in .1 Gal increments up to 199.9 Gals and 1 Gal
increments up to 1999 Gals.
B. When set to display in Imperial Gallons the display will read in .1 Gal increments up to 199.9 Gals and
1 Gal increments up to 1999 Gals.
C. When set to display in Pounds the display will read in 1 Lb increments up to 1999 Lbs.
D. When set to display in Liters the display will read in 1 Ltr increments up to 1999 Ltrs.
The K Factor programmed into the FP-5L will affect the fuel used. See the “Pilot-Programmable Modes”
section in this manual for further details.
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