UEi Test Instruments DAFM3 - Manual (Page 7)

Basic Measurement (continued)
Parameters Measured will cycle through the following in order
• Air Velocity
• Dry Bulb Temperature
• Dew Point Temperature (DP)
• Wet Bulb Temperature (WB)
• Relative Humidity (RH%)
MIN/MAX/AVG
All modes will capture the average (AVG), minimum (MIN) and
maximum (MAX) value since the meter was powered on. Select AVG/
MIN/MAX by pressing this button. Pressing “MODE” while displaying
“MIN/MAX” or “AVG” will scroll through available readings. Each
mode will also provide a choice of MIN/MAX or AVG.
Velocity with Average
The DAFM3 has the ability to capture up to eight values for velocity,
and then display the minimum, maximum and average of these
readings.
The maximum number of records is 8 points.
1. Store readings while in
the measurement mode by
pressing “RECORD” (up to 8
points of data).
2. Press “AVG Velocity” to view
results.
NOTE: “REC H” will display in
the lower left of the display.
3. Press “MIN/MAX/AVG” to
cycle through the calculated
values.
Measuring Air Flow (volume) with the UEi DAFM3
Air speed is the rate at which the airflow is moving past a specific
point. It is typically measured in feet per minute in our use, but can be
one of many different scales. Aircraft measure in knots, and weather
forecasters will use miles per hour as examples.
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