
RealFlow
On-vehicle Ultrasonic Fuel Flow Meter
The RealFlow is an on-vehicle ultrasonic fuel flow sensor that brings precision lab-grade measurement directly to the engine bay. Compact, lightweight, and orientation-agnostic, it enables real-time, highly accurate fuel consumption data under dynamic conditions in both R&D and regulatory testing environments.
Why Choose RealFlow
Exceptional Precision – Delivers ±0.5% accuracy across a wide dynamic range.
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Motorsport-Caliber Technology – Trusted in FIA Formula 1, WEC, DTM, NASCAR, and beyond.
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On-Vehicle Ready – Compact, robust design withstands vibration and tight engine placements.
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Versatile Outputs – Offers CAN, analog, and TTL pulse interfaces for seamless integration.

Key Advantages of RealFlow
Lab-Grade Measurement Accuracy
Ensures reliable fuel flow readings even at ultra-low volumes with exceptional stability.
Expanded Flow Handling
Accurately captures both delicate micro-flows and peak fuel demands in diverse testing scenarios.
Engine Bay Compatible
Designed to endure harsh thermal and physical conditions without rerouting or impact.
Flexible Data Integration
Delivers test data seamlessly to control systems or logging platforms with multiple interface options.
Technical Specifications of RealFlow
Flow Measurement | |
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Repeatability | +/- 0.15% of reading |
Uncertainty* | +/- 0.5% of reading |
Turndown ratio | 1000:1 |
Operating flow range | +/- 0-4000 ml/min |
Measurement flow range | 4-4000 ml/min |
Measurement rate | 1.1 kHz |
Maximum operating pressure | 20 barg (2000 kPag) |
Pressure drop at maximum flow | < 20 kPa (4000 ml/min for pump petrol @ 20°C) |
Fluid temperature range | -20°C to +120°C |
Ambient temperature range | -40°C to +120°C |
Temperature Measurement | 2 x 1000 Ohm RTD (1/3 DIN standard) |
Mechanical | |
Dry weight | 330 g |
Fluid capacity | 15 ml |
Wetted materials | FPM, anodised aluminium alloy, stainless steel |
Fuel line connection | -6AN fittings 9/16-inch UNF thread |
Deutsch sensor connector | ASDD006-09PC-HE |
Deutsch mating connector | ASDD606-09SC-HE |
Environmental | |
Storage temperature | -40°C to 85°C |
External pressure rating | 300 kPa |
Environmental protection | IP69K (when mated to connector) |
Electrical Supply | |
Voltage | 8V to 30V DC |
Current | < 70 mA @ +12V DC |
Voltage protection | Over-voltage 45V DC, reverse polarity -45V DC |
CAN Communications | |
Design standard | ISO 11898-2 (high-speed applications) |
Message format | 2.0A (11-bit identifier) |
Baud rate | 1 Mbit/sec |
CAN termination resistor | No |
TTL Pulse Output | |
Voltage output range | 0-5V |
Pulses per cc | 3000 (fully configurable) |
Duty cycle | 50% |
Output resistance | 1.0 kOhm |
Analog Output | |
Voltage output range | 0-10V DC |
Resolution | 16-bit |
Output resistance | 47.0 Ohm |
Load resistance | > 1.0 kOhm |
Configuration Interface | 3.3V serial interface |
Fuel Compatibility | Petrol, diesel, bio-diesel,ethanol, methanol please contact us about other fluids |
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