General Tools WDCFM8912 User Manual
WDCFM8912
USER’S MANUAL
DIGITAL AIR FLOW METER WITH
CFM, BTU, TEMP, HUMIDITY, DP, FPM,
MPH, KPH, MPS, KNOTS & WET BULB
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INTRODUCTION
Thank you for purchasing this digital Anemo-Psychrometer.
This unique meter is designed with 7 H.V.A.C &R that must have
parameters in 1. The meter is designed as battery operated for
Humidity,Air Temp., Dew Point, Wet Bulb, Air Velocity, Air Volume
and BTU.
The sensor is built in the remote fan and is specially protected by
tunable cap. While in operation, please turn on the cap to get
accurate temperature and humidity readings.
The psychrometer is a micro processor based design. A must
device for HVAC engineers use. No need to whirl the meter or refer
to charts. Easy to get wet bulb, dew point and BTU measurements
quickly!
FEATURES:
• Tunable cap to protect sensor
• Big LCD digit display
• Professional remote vane
• Metric & Imperial selectable
• Handheld size, easy to carry
• Low battery indication
• Fast response & Accurate reading
• Tripod mountable for long time use
• Dew Point calculated in seconds
• Wet Bulb calculated in seconds
• Microprocessor circuitry for reliability
• Sleep and non-sleep selectable
• Powered by 4 “AAA” batteries or 9VDC adaptor
• Back light for dark places
MATERIAL SUPPLIED
THIS PACKAGE CONTAINS:
• The meter
• Remote vane
• Battery 4 “AAA”
• Operation manual
• Hard carry case
OPTIONAL ACCESSORY:
• ASFT KIT includes RS232 cable & CD
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REMINDER
IMPORTANT:
1. Rotate the cover before measurement to
ensure the measured data is correct.
2. The fan and meter are sold as a kit and
are calibrated together.
When you need to replace the fan,
please see page 11 for details on
fan replacement.
CONTROLS AND INDICATORS LCD DISPLAY
LCD DISPLAY
KEY PAD
1. Power: O
- Turn on the meter with auto-sleep mode.
- Turn off the meter at any mode.
- When the meter is off, pressing
O more than two sec. to
enter units selection.
2. MODE:
- Pressing to select different modes.
Temp. DP WB RH Velocity.
- Pressing longer to select VOL and CAP.
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3. ENTER:
- To confirm the setting & calibration.
4. Mx/Mn/Up
L
Mx/Mn
:
- Pressing to view MAX/MIN/AVG value.
- Press to select the value of each digit in cycle.
5. REC/START:
- To start measuring volume or capacity without waiting.
6. HOLD/Down
L
HOLD
:
- In basic modes pressing this key to hold the current reading,
then pressing this key again to unlock the holding.
- Pressing to select the setting digit.
7. Power +
L
Mx/Mn
:
- When the meter is off, pressing more than two sec. to enter
non-sleep mode.
8. Power +
L
Mx/Mn
+
M
HOLD
:
- Pressing more than two seconds to enter RH calibration mode.
9. ENTER +
L
HOLD
:
- Pressing to turn on/off the backlight.
POWER ON/OFF & UNIT SELECTION
Press O to turn on the meter with auto-sleep mode. Press again
to turn off the meter at any mode.
When the meter is off, pressing
O more than two seconds to enter
units selection mode.
When in unit selection mode, press
L
Mx/Mn
or
M
HOLD
to select the
unit then, press
ENTER
to save and meter will be powered on
automatically.
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BASIC MEASUREMENT
Basic measured parameters of this model:
BASIC MEASUREMENTS
• Air temp.
• Humidity
• Dew Point
• Wet Bulb
• Air Velocity
EXTENDED MEASUREMENTS
• Air Volume
• Sum of Volume
• Capacity
• Sum of Capacity
When powered on, the air temperature is the default value to show
on the LCD. To review the other basic parameters, just press the
MODE
key then each parameter will be displayed in turn.
While in basic mode, press
MODE
for over 2 seconds to enter extend
measurement mode. You can also press mode key to switch
between volume and capacity.
MAX, MIN & AVG.
When the meter is powered on, air temp., dew-point, WBT, humidity
& velocity is temporarily saved in meter, so, to press
L
Mx/Mn
could
view the average value minimum value and maximum value in
turns. Press
L
Mx/Mn
again to back to normal mode. The data will be
re-counted once the meter is powered off and turned on again.
When in Max/Min/Avg
MODE
, press the
MODE
key to display the
parameters you need. (Fig. A, Fig. B)
(Fig. A) (Fig. B)
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