Measuring In-Duct Airflow with the Testo 405i
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- Опубликовано: 26 авг 2024
- Bryan with HVAC School shows how techs should be measuring in-duct airflow with the Testo 405i from the new expanded Testo Smart Probes Case. We use the Testo 405i hot wire anemometer and the Testo Smart Probes mobile app to measure airflow inside the duct.
Typically, the easiest way to measure in-duct airflow in residential and light-commercial HVAC is by doing a timed average traverse. In this case, we made five equidistant holes in the ductwork to do a traverse. We go into the Smart Probes app and set up the timed average traverse with the proper length and width dimensions of the duct.
Make sure that the probe tip is open. Then, place the probe fully into the duct and press the button on the handle to start measuring in-duct airflow. Hold the probe flat and pull it out slowly. Repeat those steps for the remaining ports/holes. Complete the average by pressing the button at the bottom, and you will see the in-duct airflow results. We measured 755.3 CFM and 388 feet per minute (air velocity).
Testo: www.testo.com/en/
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Awesome! Now if only all my customer's plenums had 5 equidistant holes in them and the inside diameter written on the outside.
What app are you using? The Testo Smart Probes app I downloaded includes none of the options shown in your demonstration. There are zero options on the ‘Edit view’ tab - just a blank screen.
i have the entire testo smart probe set except their anemometer, vane anemometer and ir gun. I'm gonna go by the servicefacts airflow chart and give a btu output range. I have 7 years residential hvac experience and I havent seen a justification for the price tag of their anemometers.
The fieldpiece hot wire looks awesome. But that price kills me lol. $380 for a anemometor. If i had the $ i would definitely choose that one
Would you happen to know, if the 405i works in my measure quick?
Full log what?