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12
Digital Anemometer
Operation Manual
Operating guidance
of using the backlight, if the battery voltage ≥ 7V, the battery
voltage drops because of its larger operating current, "
"
symbol may show (when "
" symbol is showing, the
accuracy of the measurement can’t be guaranteed). At this
moment, you needn’t replace battery until the "
" symbol
display again under normal use condition without using
backlight.
4.4 Wind speed measurement
Place the detector (fan) into the test environment,
"VEL" symbol will display on the screen, measurement is
done with the fan surface perpendicularly to the wind
direction.
Note:
1. If the detector (fan) is not aiming at the wind direction,
which will bring the measurement error.
2. For steady wind, the detector (fan) will get maximum
reading when it is aiming at the wind direction.
4.5 Wind speed measurement
When using the meter to measure air volume, you can
press “UNIT” key to select the measurement unit you
required (m/s, km/h, mill/h, ft/m, ft/s, knots).
4.6 Area setting
To measure air volume, you should first determine the
area of air flue to be, area input steps are shown as
following:
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