Description
Comparing airflow at two locations
Compare the air near an open doorway with a sheltered spot. Hold the impeller in the airflow and keep your hand clear of it. Give the sensor time to adjust when moving between indoors and outdoors. Record the location, time, and units with each reading.
What to check before buying
A reading represents conditions at the meter. Wind at a doorway can change with the door position or an HVAC cycle, so repeat the measurement under the same conditions before comparing results.
For field technique, read the HauntGears daylight investigation guide. See the manufacturer’s specifications and instructions.
Product photograph by Hanzys, via Wikimedia Commons. CC BY-SA 4.0. Resized and padded for square display.
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