TSI 9515 VelociCalc Air Velocity Meter

TSI 9515 / 9535 / 9545 VelociCalc Air Velocity Meter

The TSI 9515, 9535 and 9545 VelociCalc® Air Velocity Meters are a range of hotwire anemometers designed to measure air velocity. The 9515 is an economical choice for a digital air velocity meter, without compromising accuracy or precision. Professionals find them to be the ideal tool for face velocity measurements in fume hoods, spray booths, or ventilation system checks. The 9535 and 9545 simultaneously measure and data log several ventilation parameters using a single probe with multiple sensors. Both models measure velocity, temperature and calculate flow. The 9545 also measures relative humidity, and calculates dew point and wet bulb temperature.


  • Velocity Range is 0-30 m/s
  • Temperature range is 0 to 200°F (-18 to 93°C)
  • Accurate air velocity measurement
  • Integrated probe attachment
  • Large, easy to read display
  • Press button to hold reading
  • Calibration certificate included


  • 9515
  • 9535
  • 9535-A
  • 9545
  • 9545-A


  • Optimizing HVAC system performance
  • Commissioning
  • Plant maintenance