Allengra Launces Two Fuel Flow Sensors for UAVs

Allengra announced the introduction of two precision fuel flow sensors for drones. The Micro Flow Sensor (2nd gen) and the PUM Fuel Flow Meter are specifically designed for UAVs to monitor fuel levels closely.

Recognizing that drones rely on battery and fuel sources, efficiently managing both is key to longer flight times. Generally, traditional level sensors have fallen short in accuracy, particularly when fuel levels are low. Allengra says their ultrasonic flow meters “provide real-time, precise measurements with an accuracy of ±0.5%, ensuring operators know exactly when their drone reaches the 'point of no return.'”.

Both sensors can be easily integrated into telemetry platforms to enable in-flight data on fuel consumption, diagnostics, and flow behavior.

Key features of the Micro Flow Sensor (2nd Gen) are:

• Measurement accuracy: ±0.5% of measured value
• Suitable media: Fuel, coolants, water, chemicals
• Flow range: 0.3 to 30 l/min
• Compact dimensions: 85 × 25 × 32 mm
• Outputs: Modbus RTU, I²C, analog (optional)
• Integrated high-speed temperature measurement
• Ideal for irrigation systems, research missions, and water transport monitoring
• Robust Design: Resistant to vibrations, pulsating flows, and extreme temperatures

Key features of the PUM Fuel Flow Meter are:

Versatility: Specifically developed for monitoring fuels (diesel, kerosene, etc.)
• Flow range: 0.05 to 300 L/h (with selectable ranges)
• Durability: No moving parts, maintenance-free operation
• Ideal for: Drone engine monitoring, mobile fuel systems, autonomous vehicles
• Measurement accuracy: ±0.5% of measured value
• Pressure Rating: Up to 25 bar (362 psi) – exceptional accuracy and minimal pressure loss
• Temperature Range: -40°C to +125°C (-40°F to 257°F)

While these sensors are useful in addition to any larger UAV, Allengra predicts their largest adopters will be in heavy-lift logistics, industrial inspections, emergency services, and military operations. 

Source: Allengra