Cal 1 – Electronics International FL-2 User Manual

Page 14

Calibrate the Left F

Calibrate the Left Fuel T

uel T

uel Tank:

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-2 should read “0”
(Empty) for this fuel level.

Note:

Note: Gasoline is explosive and can be very dangerous. It should be handled in a well ventilated

Gasoline is explosive and can be very dangerous. It should be handled in a well ventilated

hangar or outdoors. Keep it away from any flames, heat sources or electrical equipment. Always

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 working with

store gasoline in a closed container. If you are not familiar with all of the issues of working with

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.

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-2 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 Left
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-2 and wanted to advance to a

specific calibration point, push and hold the Enter Button on the back
of the FL-2 until you get to the calibration point of interest. The
calibration points will advance every 3 seconds. If you accidentally
advance past the full fuel calibration point, the FL-2 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-2 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-2 will display

the last programmed Sensor Counts for this cal point.

Tap the Enter Button on the back of the FL-2, 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