Electronics International FL-1 - Manual (Page 14)

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Calibrate the F Calibrate the F Calibrate the F Calibrate the F Calibrate the Fuel T uel T uel T uel T uel Tank: ank: ank: ank: ank:
1. Use the chart at the back of this section and select the fuel levels for each calibration point. You
can use any number of cal points between 2 and 9. If you are not sure what the full fuel level will
be for your tank, you can record this level at the last step of this procedure when you have an
accurate measurement of the fuel required to fill the tank.
2. Drain the Left Tank with a normal aircraft angle of attack (nose up or down) such that the most
amount of fuel is left in the tank. This fuel in the tank is considered unusable and the FL-1 should
read “0” (Empty) for this fuel level.
Note: Note: Note: Note: Note: Gasoline is explosive and can be very dangerous. It should be handled in a well venti- Gasoline is explosive and can be very dangerous. It should be handled in a well venti- Gasoline is explosive and can be very dangerous. It should be handled in a well venti- Gasoline is explosive and can be very dangerous. It should be handled in a well venti- Gasoline is explosive and can be very dangerous. It should be handled in a well venti-
lated hangar or outdoors. Keep it away from any flames, heat sources or electrical equipment. lated hangar or outdoors. Keep it away from any flames, heat sources or electrical equipment. lated hangar or outdoors. Keep it away from any flames, heat sources or electrical equipment. lated hangar or outdoors. Keep it away from any flames, heat sources or electrical equipment. lated hangar or outdoors. Keep it away from any flames, heat sources or electrical equipment.
Always store gasoline in a closed container. If you are not familiar with all of the issues of
Always store gasoline in a closed container. If you are not familiar with all of the issues of Always store gasoline in a closed container. If you are not familiar with all of the issues of Always store gasoline in a closed container. If you are not familiar with all of the issues of Always store gasoline in a closed container. If you are not familiar with all of the issues of
working with gasoline, contact your local fire department for important safety advice.
working with gasoline, contact your local fire department for important safety advice. working with gasoline, contact your local fire department for important safety advice. working with gasoline, contact your local fire department for important safety advice. working with gasoline, contact your local fire department for important safety advice.
3. Set the aircraft angle of attack for cruise flight.
4. Turn the power to the FL-1 off. Set the Tank Selector Switch to the left position.
5. Push and hold the Enter Button on the back of the unit. Turn on the
power. Wait 3 seconds and release the Enter Button. Only the
Empty LED should be lit and the digital display should read “Cal 1”.
This is your first calibration point.
Note: If you are recalibrating the FL-1 and wanted to advance to a
specific calibration point, push and hold the Enter Button on the
back of the FL-1 until you get to the calibration point of interest.
The calibration points will advance every 3 seconds. If you acciden-
tally advance past the full fuel calibration point, the FL-1 will check for errors, go through the
power-up sequence and then into the normal operating mode. You
will have to start over.
6. Place the Selector Switch into the center position. The FL-1 will
display “E000”. The “E” indicates you are calibrating the Empty
Fuel Level. The “000” indicates the fuel level for this calibration
point is 0 gallons.
7. Place the Selector Switch into the right position. The FL-1 will
display the last programmed Sensor Counts for this cal point.
Tap the Enter Button on the back of the FL-1, the display will start
blinking and the Sensor Counts for the current fuel level in the tank
will be displayed. Wait for the display to stabilize and tap the Enter
Button to lock the current Sensor Counts into the display and stop
the blinking.
8. Record the Sensor Counts for calibration point 1 in the calibration
chart at the back of this section.
CAL 1
E000
0297