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TSI VelociCalc Air Velocity Meter with Straight Probe and Humidity Sensor

TSI  |   Mfr# 9545  |   Item# DO-10271-27

$1,470.00 USD/EACH

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Usually ships in 7 days.

  • Thermoanemometers with fast and accurate airflow measurements
  • Displays up to three measurements simultaneously
  • Available with manual or continuous data logging
  • Logs up to 12,700 samples and 100 test IDs
These meters simultaneously measure and datalog several ventilation parameters using a single probe with multiple sensors. Great for cleanroom filtration airflow measurements — they automatically calculate volumetric flow rate for round, square, and rectangular areas. All models measure velocity, temperature and calculate flow.Model 10271-27 include additional functionality for measuring humidity and calculating dew poitn and wet bulb. Auto shut-off preserves battery life, and a low battery indicator alerts user of battery condition.
What's Included:
Software, probe, USB cable, hard carrying case, four AA batteries, and calibration document supplied by the manufacturer.
Product Type Hot-Wire Anemometer
Temp resolution 0.1°F (0.1°C)
Temp range 14 to 140°F (-10 to 60°C)
Temp accuracy ±0.5°F (±0.3°C)
Qty/ea 1
RH range 0 to 95% RH
RH resolution 0.1% RH
RH accuracy ±3% RH
Manufacturer number 9545
Brand TSI
Air velocity range 0 to 6000 ft/min (0 to 30 m/s)
Air velocity resolution 1 ft/min (0.01 m/s)
Air velocity accuracy ±3% of reading or ±3 ft/min
(±0.015 m/s), whichever is greater
Display 4-digit LCD, 0.6" H
Memory capacity 12,700+ samples and 100 test IDs
Logging intervals 1 second to 1 hour
Velocity range 0 to 6000 ft/min (0 to 30 m/s)
Velocity resolution 1 ft/min (0.01 m/s)
Velocity accuracy ±3% of reading or ±3 ft/min (±0.015 m/s), whichever is greater
Dimensions Meter: 7"L x 3-3/8"W x 2"D
(17.8 x 8.6 x 5.1 cm)
Probe: 40"L x 1/2"dia
(101.6 x 1.3 cm)
Time constant User selectable
Power four AA batteries (included)


at $14.40 USD/PACKAGE of 4

In stock.

at $258.00 USD/EACH
Usually ships in 12 days.

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Questions and Answers

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2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    Does the software included with this product allow for data logging straight to a computer instead of the internal memory, or allow for the internal memory to be downloaded to a computer in spreadsheet format?
    Asked on 9/26/2012 by Brandon from Canada

    1 answer



      The data will need to be stored on the instrument before it can be downloaded -- the meter is not capable of live streaming. When the data is downloaded to the computer, the software will format the information so it can be opened within a Excel spreadsheet.

      Answered on 9/28/2012 by James from Technical Support
  • Q:

    What is the velocity range in ft/min and the accuracy of this instrument. I need an instrument that will measure 1-2 ft/min accurately.
    Asked on 1/13/2012 by DanO from Starke, FL

    1 answer



      The resolution of this meter is only 1 FPM and the accuracy is +/- 3 FPM; this meter is not suitable for your application. You should contact our technical support group to discuss your situation and allow us to offer some direction toward a good selection for your application.

      Answered on 1/13/2012 by Jon from Technical Support
Displaying questions 1-2

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