UEi UEi DAFM3B Manual
DAFM3B
Digital Air Flow Meter
INSTRUCTION MANUAL
ENGLISH
DAFM3B
VOL
CFM
LW
MODE
HOLD
START
STOP
EXIT
LW-D-AREA
ON / OFF
(SET)
MAX / MIN
AVG
[HOLD TO EXIT
AVG MODE]
O
P
C
E
N
L
O
S
E
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
TABLE OF CONTENTS
Introduction ................................................................................................3
Safety ..........................................................................................................3
Controls and Indicators ..............................................................................4
Figures and Components ............................................................................5
Operating Instructions
Disable Auto Power Off ....................................................................5
Selecting Units..................................................................................5
Basic Measurement ...................................................................... 5-6
Measuring Air Volume (CFM or CMM)
Entering Duct Information ................................................................6
Timed Average Air Volume ...............................................................7
Estimating FREE AREA (Effective area) of a Grill ......................................8
Maintenance
Low Battery ......................................................................................9
Cleaning ............................................................................................9
Battery Replacement ........................................................................9
Specifications
Warranty and Service Information ..........................................................11
...........................................................................................10
INTRODUCTION
The DAFM3B Anemometer/Psychrometer is designed with 6 HVAC/R
parameters in one instrument. These are included in a portable, batteryoperated instrument for measuring humidity, air temperature, dew point,
wet bulb, air velocity and air volume. The vane probe includes
sensors for velocity, temperature and humidity.
FEATURES
• Measures Air Velocity, Temperature, and Relative Humidity (RH%)
• Calculates Wet-bulb temperature, dew point, and air volume
(CFM, CMM)
• 3” diameter air vane
• Timed accumulative average for air volume with one hour maximum
• Min/Max and Hold
• English/Metric Scales
• Fast response
• Auto-power off (can be disabled)
• Low battery indicator
INCLUDED
• DAFM3B Meter
• Air vane probe
• Battery (1 x 9V)
• User manual
• Hard carrying case
SAFETY NOTES
Before using this meter, read all safety information carefully. In this
manual the word “WARNING” is used to indicate conditions or actions
that may pose physical hazards to the user. The word “CAUTION” is
used to indicate conditions or actions that may damage the instrument.
CAUTION! Do not strike the fan portion of the probe.
3
CONTROLS AND INDICATORS
2
5
3
HOLDMODE
4
EXIT LW-D-AREA
[HOLD TO EXIT
AVG MODE]
START/
STOP
MAX / MIN
AVG
6
7
1
ON / OFF
(SET)
1. On/Off (Setup): Press briefly to power meter on. Press and hold
to turn the meter off.
• Note: When the meter is OFF, press more than two seconds
to enter SETUP mode.
2. HOLD: Freezes display reading for current parameter
3. MODE: Press to scroll through available measurements of
velocity, air flow, ambient temperature, relative humidity,
wet-bulb temperature, and dew point temperature.
4. EXIT: Use to exit setup.
• Note: Press and hold to exit timed average display
5. START/STOP: Press to begin air volume timed average. Press a
second time to pause timed average.
6. LW-D-AREA: Press when setting up area for calculation of air
volume. Pressing repeatedly scrolls through the three options.
(LW-Length/Width, D-Diameter, A – Area)
7. MIN/MAX AVG ( ): Press to display minimum or maximum
values for any measurement. Press when in timed average air
volume to display average, minimum or maximum air volume.
4
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