The ATS Family of Companies (FoC) provides air velocity meter calibration for critical instruments and equipment. Pilots rely on air velocity meters, or anemometers, for accurate readings. Aging or damaged instruments can give pilots inaccurate measurements with dire results. To keep your equipment within specifications and maintain the safety of your aircraft and occupants, ATS calibrates a wide array of avionic instruments.
Wind Tunnel Calibrations of Anemometers
ATS calibrates a wide range of anemometers for accurate air velocity and wind speed measurements:
- Hot wire
- Vane/propeller
- Pitot-static tubes
- Ultrasonic
Our custom-made Eiffel-type wind tunnel can reach a wind velocity between 2.5 m/s and 35 m/s in multiple directions. For maximum accuracy, we compare the flow rate with our reference wind anemometers that can achieve up to ±0.6% accuracy. We compare all measurements against ISO 17025 calibrated anemometers, manufacturer tolerances, and client specifications.
To account for hysteresis effects, we test each unit under dynamic speed directions. Hysteresis and other errors cause the flight instrumentation to lag, such as when the aircraft experiences a sudden change in angle and wind pressure.
In addition to calibrating equipment for accurate measurements, ATS offers wind vane inspections to confirm the blades are free from physical defects, such as cracks and chips, that will negatively impact performance.
Pitot-Static System Test Sets
ATS calibrates pitot-static system test sets. Pitot-static systems measure air pressure to determine the aircraft’s airspeed, as displayed on an airspeed indicator (ASI). However, pitot-static systems are vulnerable to position error, blockage, and miscalculations at high altitudes and lower air density. To compensate for reading errors, aircraft include multiple airspeed indicators that determine Calibrated Air Speed (CAS) and True Air Speed (TAS).
Pitot-static systems may also connect to other digital and analog devices, such as flight data recorders. Flight equipment and instruments should undergo regular calibrations from qualified and certified labs to maintain reliability and avoid reading errors.
Calibrations with ATS
ATS is an eminent provider of consulting engineering, calibration, testing, and inspection services. Known for our quick turn-around rate and thorough documentation, we operate one of the largest calibration labs in North America. Now at the head of an expanding Family of Companies, we can send experienced and qualified experts to your location for on-site services or take shipments for laboratory calibrations using innovative technology and procedures.
Standards
As an FAA-approved repair station, we regularly evaluate aircraft for damage and equipment flaws. Our FoC follows calibration practices outlined by industry authorities:
- ASTM D5741 – Characterizing Surface Wind Using a Wind Vane and Rotating Anemometer
- ASTM D5096 –Determining the Performance of a Cup or Propeller Anemometer
- NIST-traceable calibrations
- ISO/IEC 17025:2017 calibrations
ATS is also A2LA-accredited to perform ISO/IEC 17025:2017 mechanical, electrical, nondestructive, and chemistry tests. For more information on our certifications and quality standards, click here.
Contact Us
Inaccurate and damaged aviation instruments endanger all lives aboard an aircraft. Avoid costly and fatal mistakes by calibrating anemometers and their related instruments before a flight. Call +1 (888) 287-5227 or complete the request form on this page to take advantage of the expert calibration services from the ATS Family of Companies.
