Air Flow
The Kestrel 4100 will display the volume air flow, based on the
instantaneous air velocity and cross-sectional area of the
opening through which the air is passing.
To set the dimensions of the duct or
opening, press the button while viewing
the AIR FLOW screen. The DIMENSIONAL
SETTING screen will appear with the word
SHAPE highlighted.
The shape of the opening can be selected by pressing the or
button. The options are round or rectangular openings. Press the
button to highlight the dimensional settings. For round
openings, simply set the correct diameter of the opening. Use
the and buttons to increase and decrease the value. Holding
these buttons will increase and decrease the value quickly. For
rectangular openings, set both the length and the width of the
opening.
When the dimensional settings are correct, press the button to
exit the DIMENSIONAL SETTING screen and return to AIR FLOW
screen. Place the Kestrel 4100 in the duct air flow. The displayed
air flow value will be the result of multiplying the instantaneous
air velocity measured by the Kestrel 4100 by the area of the
programmed opening.
You may change the dimension setting and airflow units in the
Main Setup Menu.
When the Chart Screen is displayed, press to view the details of
the chart data. A cursor will appear on the most recent data
point. The date and time of storage will be displayed below
the chart, and the data value will be displayed above the chart.
If there is no stored data, only the cursor and the axis will
appear.
Press or to review the data points.
Hold or to quickly scroll through
the data.
Press or to view the data for the other measurements at the
same date and time.
Press to return to the normal Chart Screen.
Press to illuminate the backlight for one minute.
Press to manually store data.
Press to enter the Main Setup Menu.
Hold for 2 seconds to turn the unit off.
Value
Cursor
Chart
Date &
Time