We’ve worked with EI for years and love the product and support always received. Quality & dependability.
- Customer
Tammy B. from North Carolina
- Aircraft
Air Tractor AT-802
- EI Instrument
8am–4:30pm PST M–F
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The FL-1 offers pilots an accurate, stable digital fuel level for single tank configurations. Not only does the FL-1 display the tank level digitally, it also provides a 210° graphical arc for immediate, quick reference of the tank fuel level.
The FL-1 can be ordered to work with a resistive probe (FL-1R-12 or FL-1R-24, depending on 12 or 24 volts), a capacitive probe (FL-1CA) or a 0-5 volt output such as with some Skysports probes (FL-1V). Please be sure to specify which model you need when you order your FL-1.
The FL-1 is not STC’d for installation in a certified aircraft.
When in flight, fuel will slosh around in the aircraft fuel tanks, creating irritating readings that constantly jump around. The FL-1 has a Fuel Slosh Stabilization calibration point that averages fuel level readings, creating a much more stable, but still extremely accurate fuel reading. Calibrate between a couple of seconds all the way up to over a minute of fuel slosh averaging.
The FL-1 allows installers to program from as little as two all the way up to nine fuel level calibration points in the fuel tank. This flexibility eliminates inaccuracies due to non-linear fuel tanks.
The FL-1 is a simple instrument to install and program. Clear step-by-step instructions make programming the instrument easy to calibrate to your fuel tank senders.
The pilot can easily select between displaying fuel level in Liters, Gallons or Lbs with a switch on the front of the instrument panel.
FL-1 Single Fuel Level Package
FL-1RA-12, FL-1RA-24, FL-1CA, FL-1V
$600

Dimensions
2.5″ x 2.5″ x 3.65″ Deep, 2 1/4″ Flush Mount
Weight
Instrument: 11 oz
Fuel Flow Transducer: 6 oz
Power Requirements
7.5 to 35 Volts
Typical: 0.1 amps @ 12 Volts
Intensity Control
Independent control lines allow pilots to adjust the intensity of both the Green Indicator Lights and the LCD Backlight during instrument operations. See downloads page for more information.

We’ve worked with EI for years and love the product and support always received. Quality & dependability.
[I chose EI because of its] Reputation and value.
Great product. So easy to read compared to the originals.
Very easy to install and directions were straight-forward.
EI tech support is the best.
Outstanding support. From the friendly demeanor of whoever answers the phone to all the way to [their sales representative]. Your CGR-30 series is superb.
Installation went great. The Fuel Flow is dead on.
I love my new EGT. Very accurate and has ambient air temperature so I know how cold my engine is before I start it. Easy to see lighting.
I have worked with and installed a few of your competitors’ and your systems. EI instruments’ ease of use and installation make these systems my go-to choice and number one recommendation to customers.
Your (customer) service is excellent!
I have heard only great words about EI… Won’t be able to install till at least April but I know you are very helpful when it comes to questions.
Great to have all 6 egt’s, installation was straightforward. [I chose E.I. because of] price and availability.