Starting at $1,050.00
Starting at $945.00

TSI Alnor


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  • Air Velocity
    • Range: 0 to 6,000ft/min (0 to 30m/s)
    • Accuracy: ±3% of reading or ±3ft/min (±0.015m/s)
    • Resolution: 1ft/min (0.01m/s)
  • Duct Size: 1 to 250 inches in increments of 0.1 inch
  • Temperature
    • Range: 0 to 200°F (-18 to 93°C)
    • Accuracy: ±0.5°F (±0.3°C)
    • Resolution: 0.1°F (0.1°C)
  • Data logs up to 12,700 samples and 100 test IDs
    • Manual entry logging
  • User selectable time constant
  • Probe Length: 40 inches

What's in the Box

  • Hard carrying case
  • 4 alkaline batteries
  • USB cable
  • LogDat2 software
  • Manual
  • NIST certificate

The TSI Alnor VelociCalc 9535 air velocity meter simultaneously measures and data logs air velocity and temperature using a single probe with multiple sensors. Typically used to measure HVAC system performance as well as critical environment certifications and duct traverses, the 9535 can also calculate volumetric flow and the actual/standard velocity.

TSI Alnor air velocity meters measure across a range of 0 to 6,000 ft/min (0 to 30 m/s) with an accuracy of ±3% of reading or ±3 ft/min (±0.015 m/s). Temperature is measured from 0 to 200°F (-18 to 93°C) with an accuracy of ±0.5°F (±0.3°C). The range of volumetric flow rates is a function of velocity and duct size. The TSI Alnor VelociCalc 9535 displays up to three measurements simultaneously. Additionally, the VelociCalc meter is capable of logging 12,700+ samples and 100 test IDs which can be easily downloaded to a computer with the LogDat2 software that comes standard with the meter.

The VelociCalc 9535 model features a telescoping straight probe, while the 9535-A model has a telescoping articulated probe.

TSI Alnor Thermal Anemometer Carrying Case
Rugged carrying case for basic TSI Alnor thermal anemometers
In Stock
TSI Alnor Thermal Anemometer Carrying Case
Rugged carrying case for TSI Alnor thermal anemometers


This product can be used in the following applications:

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