Featuring a Measurement Specialties 4525DO sensor, with 1 psi measurement range (roughly up to 100 m/s or 360 km/h or 223 mp/h), the Airspeed Sensor Kit enables a resolution of 0.84 Pa, with data delivered at 14 bits buil-in ADC.
Not influenced by the heat of nearby processing components, it is much closer to the air temperature than with previous analog sensor setups.
The MS4525 Airspeed sensor is a differential pressure sensor designed to measure airspeed by detecting the difference between static pressure (ambient atmospheric pressure) and dynamic pressure (pressure generated by airflow).
It features two dedicated inputs:
Static port: Connects to a static pressure source (e.g., a static port on an aircraft or a pitot-static system).
Dynamic port: Connects to a dynamic pressure source (e.g., a pitot tube).
Important: Ensure both inputs are properly connected to their respective pressure sources before operation. Incorrect connections may result in inaccurate airspeed readings or sensor malfunction. Always verify the wiring and pressure line integrity prior to use.
Technical
MS4525DO
Pressure Range
0 to 1 psi differential
Max Speed
~350 km/h
Sensitivity
14-bit ADC
Accuracy
±0.0025 psi
Maximum Output Data Rate (ODR)
~2000 Hz
Peak Supply Current
3 mA
Interface
I2C - JST-GH 1.25mm 4P
Size
33 x 26 x 15 mm
Weight
8 g
Reasons to choose the MS4525 Airspeed
The Siderion MS4525 is a high-performance differential pressure and airspeed sensor built around the proven Measurement Specialties MS4525DO architecture.
It is engineered to give fixed-wing and VTOL UAV builders reliable, accurate air data feedback.
High-Resolution 14-Bit Digital ADC Features an internal 14-bit digital ADC output delivering a fine resolution of 0.84 Pa for precise differential pressure measurements.
Optimized ±1 PSI Dynamic Range Engineered with a ±1 PSI range capable of supporting speeds up to 350 km/h (100 m/s), making it ideal for standard and high-performance unmanned aircraft alike.
Native Autopilot Ecosystem Compatibility Plug-and-play ready for open-source flight controllers running PX4, ArduPilot, and Betaflight, ensuring straightforward setup and reliable telemetry integration.
Direct Pitot-Static Integration Designed with differential ports that pair smoothly with standard Pitot-static tubes to accurately capture total and static pressure differentials.
Independent Ambient Temperature Tracking Measures surrounding air temperature separately from processing heat sources, providing clean data for precise true airspeed (TAS) calculations when paired with compatible static sensors.
Practical uses
✔ Fixed-Wing & Hybrid VTOL UAV Flight Control
✔ High-Precision Drone Surveying & Mapping
✔ Pitot-Static & Air Data Systems (ADS)
✔ Aerodynamic Research & Wind Tunnel Testing
✔ Autonomous Cargo & Inspection Aircraft
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