FL256 Six Tank Fuel Level Instrument
The FL256 instrument is an advanced, next generation airborne fuel level reporting instrument that supports six fuel tanks, used specifically with fuel senders that have a DC level output.
Fuel level functionality is TSO’d and meets the repeatable accuracy requirements of SAE AS405C, +/- 1US Gallon.
Functional displays include:
- Graphical indication of fuel level in each tank
- Selectable digital fuel quantity for each tank
- Fully programmable color indication to meet all aircraft marking requirements
- Graphical fuel level indication, starting at power on
The FL256 instrument is TSO’d and STC’d as a primary replacement instrument under all flight conditions (day/night VFR and IFR). It is a requirement of the STC that this be the only fuel level indicator, when installed.
The FL256 instrument utilizes the existing fuel senders.
Certification / Compliance
Certified as primary replacement
DC Power Source
Input voltage 6 to 36 VDC
Power consumption 100mA
Load dump tolerance +60V
Direct spike tolerance +/- 60V
Cable spike tolerance > +/- 1KV
Constant operating -15ºC to +55ºC
Short term operating (1hr) -40ºC to +70ºC
Storage -55ºC to +85ºC
DC Voltage 0v to 5.0v
User selectable, proportional or inversely proportional to fuel quantity
AS405C +/- 1 USG
US Gallons or Litres, user selectable
0 to 120 USG (defined by fuel sender/tank size)
Sunlight readable LCD
80º Viewing angle from all directions
Internal and external intensity control
100mA sink with reverse EMF protection
Primary Display: Fuel level in all tanks
Trend Graph: Graphic display of level vs time
2.45” X 2.45” X 0.9”
Weight (excluding harness)
Black anodized 6061 aluminum
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