Electronics International FL-2 - Manual (Page 6)

Note: Note: Note: Note: Note: To acknowledge a blinking LED (i.e., to stop the blinking), change the position of the Tank Selector
Switch. Once a blinking warning is acknowledged it will not occur again until the FL-2's power has been
turned off and back on. Although these blinking warnings are valuable, they can be annoying. For this
reason we provide a way of shutting them off.
During night operation the analog LED's may be too bright. If so, turn the panel light rheostat up and the
analog lights (LED's) will dim. If you wish to control the intensity of the LED's independent of the panel light
rheostat, a LED Intensity Control Pot is available from Electronics International. The red LED's will always be
displayed at full intensity.
Digital Display: Digital Display: Digital Display: Digital Display: Digital Display:
With the Tank Selector Switch in the left or right position the digital display will show the fuel level in the
appropriate tank. With the Tank Selector in the center position the total fuel (left + right) will be displayed. Fuel
levels below 2 gallons will be displayed as "0" in the left, right and total position.
If the digital display backlight has been permanently powered up (as recommended), the digital display will
be easier to see during low ambient light conditions and at night.
On power-up the FL-2 performs the following tests in sequence:
1. The left tank's calibration data is check for errors. A table of error codes is provided in the calibration
section of this manual. If an error is found, the appropriate error code is displayed and the FL-2 operation
is stopped.
2. The right tank's calibration data is check for errors. If an error is found, the appropriate error code is
displayed and the FL-2 operation is stopped.
3. A self test is performed, all the LED's are sequenced and "8888" is shown on the digital display.
***** MUST READ ***** ***** MUST READ ***** ***** MUST READ ***** ***** MUST READ ***** ***** MUST READ *****
Accuracy Limitations: Accuracy Limitations: Accuracy Limitations: Accuracy Limitations: Accuracy Limitations:
The accuracy limitations of the FL-2 are listed below. It is the pilot/owner's obligation to make anyone It is the pilot/owner's obligation to make anyone It is the pilot/owner's obligation to make anyone It is the pilot/owner's obligation to make anyone It is the pilot/owner's obligation to make anyone
flying the aircraft aware of these limitations. flying the aircraft aware of these limitations. flying the aircraft aware of these limitations. flying the aircraft aware of these limitations. flying the aircraft aware of these limitations.
1. Angle of Attack - 1. Angle of Attack - 1. Angle of Attack - 1. Angle of Attack - 1. Angle of Attack - The FL-2 must be calibrated with the aircraft in a cruise angle of attack. If the aircraft
is in a condition other than cruise, depending on the mounting location and type of sensor used, the FL-2
may display inaccurate fuel levels. If your aircraft does not sit at a cruise angle of attack when on the
ground, it may not display accurate fuel levels. Test your aircraft at different angles of attack and see
Test your aircraft at different angles of attack and see Test your aircraft at different angles of attack and see Test your aircraft at different angles of attack and see Test your aircraft at different angles of attack and see
what the effects are on the fuel level readings for the FL-2. what the effects are on the fuel level readings for the FL-2. what the effects are on the fuel level readings for the FL-2. what the effects are on the fuel level readings for the FL-2. what the effects are on the fuel level readings for the FL-2.
2. Full Fuel Readings - Full Fuel Readings - Full Fuel Readings - Full Fuel Readings - Full Fuel Readings - As a tank is filled the fuel sensor may not be able to detect the fuel entering the
upper corners of the fuel tank. If this is the case with your sensor, the FL-2 will display lower fuel levels
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