Proster Digital Anemometer with Wind Temperature Measurement Small Data Hold Function Wind Power Display Backlight

Q: Is it water resistant?

The cover protects it from rain but if you drop in water no.

Q: how big is it? the add says 1.6 inches high

In the case it’s just over 4” tall. 1.6” is the width.

Q: Can i use this to measure how strong the wind from a fan is

Absolutely, you'll even get the wind chill! If you combine this with using a Kill-o-Watt meter to see how much current it it is using, you'll find out that sometime a lower speed doesn't save much electricity due to inefficiencies in the fan's motor. Best of luck.

Q: Can i use this to measure hvac duct airflow?

Yes. Or any fan. You'll need to multiply the ft/min result by the sensor's cross-sectional area (in sqft). Best to average the value over many points. Even better to concentrate the entire airflow to only the device by blocking any side-air escaping from the sensor.

3.9/5

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Proster Portable Digital LCD Anemometer with Max/Min/AVG Digital Anemometer Wind Speed Measurement Air Flow Thermometer with Backlight – Orange

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