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recorded over a measurement "session"—the period of time
during which you measure speeds at multiple locations and/or
speeds of multiple devices. The session begins when you power
on the DAF3009; it typically ends 5 minutes after you finish
making measurements with the activation of the APO function.
The value of being able to quickly determine the fastest and
slowest fans of a group, or the average of a group of fans, should
be obvious.
To display the maximum, minimum or average air speed
during a measurement session,
briefly press the DISP button as
many times as necessary until the
label of the desired value (Max,
Min or Avg) appears at the left of
the LCD (Fig. 2, Callout R). The
figure at right shows the three
available session parameters in
their selection sequence relative to
real-time measurement mode.
MEASURING RELATIVE
HUMIDITY (RH)
To enter RH mode, press the SET button with FLOW flashing on
the top line of the LCD. This will change the flashing term to RH.
To stop RH from flashing, press the MODE button.
The DAF3009 will now display real-time RH values on the upper
readout and the current Wind Chill Index or Dew Point or Wet Bulb
temperature on the lower readout. To change the unit of
temperature measurement to or from °F or °C, press the SET
button, followed by the UNIT button to save the selection. To leave
the unit unchanged, press the UNIT button.
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