• Rotating vane anemometer

Rotating vane anemometer

  • TSI - VelociCalc 5725

View Quote

Can we help you?

Features and benefits

Model 5725
  • 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
Data Logging Features
  • Logs 12,700+ samples with a time and date stamp
  • Recall, review, store data
  • LogDat2™ downloading software included

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.

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


Range50 to 6,000 ft/min (0.25 to 30 m/s)
Accuracy ±1.0% of reading or ±4 ft/min (±0.02 m/s),whichever is greater
Duct Size
Range0 to 173.6 ft2 (0 to 16 m2)
Volumetric Flow Rate
RangeActual range is a function of velocity and duct area
Range 32 to 140°F (0 to 60°C)
Accuracy±2°F (±0.5°C)
Resolution0.1°F (0.1°C)
Instrument Temperature Range
Operating (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 Capabilities
Range12,700+ samples and 100 test IDs
Logging Interval
1 second to 1 hour
Time Constant
User selectable
External Meter Dimensions
3.3 in. x 7.0 in. x 1.8 in. (8.4 cm x 17.8 cm x 4.4 cm)
Meter Weight with Batteries
9.6 oz. (270 g)
Power Requirements
One 9-volt alkaline or NiCad battery

Aircone Flow Hoods

Features and Benefits

Aircone Flow Hoods are a fast and accurate method of maximizing the usefulness of your 4-inch (100-mm) rotating vane anemometers. For a modest investment, you can enhance the capability of your rotating vane, turning it into an air volume flow balancing tool.
  • Rectangular and circular cones available
  • Measures volumetric flow at grilles, diffusers, and linears
  • Reads air volume quickly and accurately
  • Excellent choice for small grilles
TSI Aircone Flow Kit (p/n 801749) includes one each:
Rectangular 11.2 in. x 9.2 in. (285 mm x 235 mm)
Round 7.1 in. (180 mm) diameter