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VelociCalc – Rotating Vane Anemometer

VelociCalc – Rotating Vane Anemometer



The VELOCICALC® 5725 is a high performance, yet simple to use, rotating vane anemometer. High accuracy and reliability make the VELOCICALC® 5725 the professional’s ideal tool for measuring unevenly distributed or fluctuating flows through heating and cooling coils, diffusers, grilles, and filters. It accurately measures air velocity and temperature, calculates flow rate, performs averaging, and can determine minimum and maximum readings.

Using sweep mode you can quickly provide one averaged reading of velocity or volume over a large measurement area. The large vane head automatically averages velocity and volume readings. The VELOCICALC® 5725 includes variable time constant, sampling and statistics functions and data logging capability.

Features & Benefits

  • Reversible 4-inch (100 mm) head to read supply and exhaust flows
  • Calculates volumetric flow rate when user inputs duct shape and size, or area
  • Sampling function records multiple point measurements
  • Automatic averaging of air velocity
  • Simultaneously displays velocity and temperature
  • Sweep mode for one overall measurement
  • Optional 36-inch telescopic probe available
  • Compatible with optional Aircone flow hoods
  • Logs 12,700+ samples with a time and date stamp
  • Recall, review, store data
  • LogDat2™ downloading software included


  • Heating and cooling coil analysis
  • Diffuser and grille measurements
  • Fume hood face velocity tests
  • Indoor air quality tests
  • Filter face velocity measurements

Technical Specifications

Product Specifications Description
VelocityRange: 50 to 6,000 ft/min (0.25 to 30 m/s)
Accuracy: ±1.0% of reading ±4 ft/min (±0.02 m/s)
Duct SizeRange: 0 to 173.6 ft2 (0 to 16 m2)
Volumetric Flow RateRange Actual range is a function of velocity and duct area
TemperatureRange: 32 to 140°F (0 to 60°C)
Accuracy: ±2.0°F (±1.0°C)
Resolution: 0.1°F (0.1°C)
Instrument Temperature RangeOperating (Electronics): 40 to 113°F (5 to 45°C)
Operating (Vane Head): 32 to 140°F (0 to 60°C)
Storage: -4 to 140°F (-20 to 60°C)
Data Storage CapabilitiesRange 12,700+ samples and 100 test IDs
Logging Interval1 second to 1 hour
Time ConstantUser selectable
External Meter Dimensions3.3 in. x 7.0 in. x 1.8 in. (8.4 cm x 17.8 cm x 4.4 cm)
Meter Weight with Batteries0.6 lbs (0.27 kg)
Power RequirementsFour AA-size batteries or optional AC adapter