General Tools and Instruments DCFM8906 v.1 - Manual (Page 12)

• The minimum air speed recorded since the session
began
• The maximum air speed recorded since the session
began
These three air speed readings can be very helpful for
comparing the effects of different equipment settings during
an HVAC/R system installation or repair.
To initiate recording, place or secure the meter in the
airstream and press the MIN/MAX REC SINGLE-POINT
button. The REC and AVG indications will initially appear on
the upper display to signify that the meter is now 1) recording
air speeds and 2) calculating and displaying a continuous
moving average of the readings (Fig. 4).
Fig. 4. The initial display after entering recording mode
To change the calculations and displays based on the
recorded measurements, use the MIN/MAX REC SINGLE-
POINT button. With AVG showing on the display, pressing the
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