Vane Anemometer

RVA 501

The Alnor Rotating Vane RVA501 is a handheld digital rotating vane anemometer that measures air velocity, air volume, and temperature in imperial or metric units. The four-inch (100mm) head automatically averages velocity and volume readings, making the RVA501 an essential tool for measuring unevenly distributed or fluctuating flows through heating and cooling coils, diffusers, grilles, and filters.


Sweep mode quickly and reliably provides one averaged reading of velocity or volume over a large measurement area. The detachable head is ideal for taking measurements in tight spaces. Its optional telescoping probe provides safe access to hard-to-reach locations and its data logging capability allows storage of more than 12,700 readings.

Ideal applications include heating and cooling coil analysis, diffuser and grille measurements, indoor air quality tests and filter face velocity measurements.


  • Instrument
  • Carrying case
  • Alkaline batteries
  • USB cable and downloading software
  • Operation and service manual
  • NIST calibration certificate

Features and benefits

  • Measures velocity and temperature
  • Sweep mode for one overall measurement of large areas
  • Log, store, and recall data
  • Download data to a PC using LogDat2™ downloading software
  • Measurement range: 50–6000 ft/min (0.25–30 m/s)
  • Optional telescopic probe available
  • Compatible with Aircone Flow Hoods

The LogDat2 software allows you to record and track important measurement data from a variety of USB enabled TSI instruments.

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