Fuel Level Sensor
Fly Henry Capacitive Fuel Level Sensor (Trimmable)
Engineered specifically for Paramotors (PPG), Microlights, Trikes, and Ultralight (ULL) aircraft, this solid-state capacitive fuel level probe provides continuous, slosh-damped fuel measurement without mechanical floats. Available in standard lengths of 29 cm or 45 cm, both versions can be easily cut down to size to match the exact internal depth of any custom fuel tank.
Choosing Your Base Length
Select the model closest to (or slightly taller than) your fuel cell internal depth:
| Model Option | Probe Length & Trimming | Recommended Aircraft Fitment |
|---|---|---|
| 29 cm Probe | 290 mm factory length • Trimmable down to any shallow depth | Compact paramotor tanks, low-slung teardrop fuel cells, under-seat paramotor tanks |
| 45 cm Probe | 450 mm factory length • Trimmable down to any intermediate depth | Deep tandem paramotor tanks, trike saddle tanks, and upright ultralight fuselage cells |
29 cm Probe (Shallow Tanks)
The standard choice for most modern foot-launch paramotors. Perfectly matches 10L to 14L poly tanks from Vittorazi, Airfer, Parajet, Scout, and PAP. If your tank internal clearance is 22 cm, simply trim 7 cm off the probe for a tailored installation.
45 cm Probe (Deep / Trike Tanks)
Engineered for higher-capacity tanks found on tandem trikes, cross-country paramotors, and light ultralights. Provides continuous sensing through deep vertical sumps, ensuring accurate readings right down to the final reserve litres.
Engineering & Reliability Advantages
Why capacitive solid-state technology outperforms traditional mechanical floats:
Zero Moving Parts
Mechanical float arms frequently bounce, stick on internal tank seams, or suffer broken pivot potentiometers from motor vibration. Capacitive sensing uses solid metal tubes that will never wear out or jam.
Field Trimmable
Easily shortened with a standard pipe cutter or fine hacksaw. Simply cut the outer aluminium tube and inner rod to leave approximately 10 mm of bottom tank clearance, deburr the cut, and re-fit the bottom spacer.
Fly Meter Integration
Outputs a stable 0–5 V analogue signal that connects directly to the Fly Henry Fly Meter. Calibrate in three simple steps (0% Empty, 50% Half, 100% Full) to compensate for irregular tank geometries.
Slosh Damped Telemetry
The tubular column acts as an internal baffle, preventing rapid fuel movement during turns, spiral dives, or wing oscillations from causing false low-fuel warning flashes on your instrument.
Technical Specifications
| Sensor Architecture | Solid-state capacitive liquid level probe (no moving parts) |
| Standard Length Options | 29 cm (290 mm) or 45 cm (450 mm) |
| Length Customisation | Can be cut down to any custom length with a tube cutter or fine hacksaw |
| Output Signal | 0 – 5 V DC analogue linear voltage output |
| Compatible Liquid Media | Aviation petrol (AvGas), Mogas (E5 / E10), 2-stroke petrol/oil pre-mix |
| Instrument Compatibility | Fly Henry Fly Meter (Fuel Level Input) & universal 0–5 V EIS displays |
| Target Aircraft | Paramotors (PPG), Microlights, Trikes, and Ultralight (ULL) aircraft |
| Manufacturer / Brand | Fly Henry |
|---|---|
| Part Number / SKU | FLS29 |
| Fitment Type | Aviation Standard Fitment |
Technical Inquiry for Fuel Level Sensor
Confirm wiring loom compatibility, panel depths, or kit lead times with our engineering team.