Amprobe TMA40-A Datalogging Anemometer

(4 customer reviews)

  • Three measurements in one meter
  • Air velocity (FPM) or air volume (CFM), RH, Temperature
  • Large digital display with backlight
  • Flexible measurement vane for accessing difficult areas
  • RS232 Output for data result usage
  • Measure multiple points up to 99
  • Data Logging of Measurements, 2400 data points
  • Set display results for Metric or Imperial
SKU: 3477287 Category:


The Amprobe TMA40-A provides three measurements in one: air velocity or volume, relative humidity and temperature. With three ways to view your measurement results, choose between single point measurement, multiple points up to 99, or the added feature of data logging up to 2400 data points. User sets the measurement interval time from 1 to 200 seconds. The TMA40-A has a flexible cord to position vane where you need to measure. For accurate CFM results, the user simply inputs the area of the air source.

For measuring indoor air quality, and for HVAC/R technicians measuring heating, ventilation, air-conditioning, refrigeration, wind flow and temperature in residential, commercial and industrial air conditioning systems.


Function Range Resolution Accuracy
Air velocity 0.4 m/s → 32 m/s 0.1 m/s +/- 3 %
Air volume .0 → 99999 (cfm/cmm) 0.1 CMM – 1 CFM +/- 3 %
Temperature -4 °F → 158 °F (-20 °C → 70 °C) 0.1 °F (0.1 °C) +/- 0.6 %
Relative humidity 0 → 100 % 0.1 % +/- 3 % @ 77 °F (25 °C)


What’s Included

  • TMA40-A
  • Carrying case
  • Battery (installed)
  • Optional PC interface for charting or analysis


Datasheet »
Product Manual »

4 reviews for Amprobe TMA40-A Datalogging Anemometer

  1. Ray84

    Good tool for testing air flow

    The unit is easy to use and functions easily. Downloading the data is a little difficult. Overall I am happy with the tool and it has been a good addition to my inspection business.

    ✔ Yes, I recommend this product.

  2. edwabr

    Air Flow Measurement

    The Amprobe TMA40-A is a great tool for air flow measurement. It does Dew point, wet bulb, dry bulb, air speed, and air velocity. This is a great tool for troubleshooting duct problems..

    ✔ Yes, I recommend this product.

  3. GLT8208

    Easy operation,Feature rich

    I use this for HVAC air balanceing and system verication.

    ✔ Yes, I recommend this product.

  4. Javier Muñoz

    I bought this product this month, it´s excellent. Where can I find the calibration certificate?

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