General DAF3012M User manual
TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 –3
Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
What’s In the Package . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 –5
Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Activate Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . 6 – 13
Measuring Air/Wind Speed and Temperatures . . 7 –9
Displaying Min/Max/Avg Air and Wind Speeds
. . 9 – 10
Measuring Relative Humidity (RH) . . . . . . . . . . . . . 10
Measuring Barometric Pressure . . . . . . . . . . . . . . . 10
Storing and Recalling Records . . . . . . . . . . . . 11 – 12
Using and Calibrating the Compass . . . . . . . . 12 – 13
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 – 14
Maintenance Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Return for Repair Policy . . . . . . . . . . . . . . . . . . . . . . . . . 16
INT ODUCTION
Thank you for purchasing General Tools & Instruments’
DA 3012M Mini Anemometer-Psychrometer with Compass and
Memory. Please read this user’s manual carefully and thoroughly
before using the product.
2
The DA 3012M is a one-piece vane anemometer-psychrometer
that can measure all parameters needed to monitor environmental
conditions indoors or track weather conditions outdoors.
KEY FEATU ES
• Measures:
Ambient temperature
Dew Point and Wet Bulb temperatures
Wind Chill Index (WCI)
Air/wind speed and direction
Relative humidity (RH)
Barometric pressure
• Stores/recalls 20 pairs of readings
• All temperatures displayable in ° (default) or °C
• ive available air/wind speed units: ft./min, mph, m/sec, km/hr,
knots
• Min, Max and Avg session values for air/wind speed
• Barometric pressure readings available in kPa or mbar
• Large backlit dual readout LCD
• 5-minute Auto Power Off
• Small and light enough for one-handed operation
• Includes vane and sensor cap with wrist strap
• Tripod mount
• CE and RoHS approved
• 1 year limited warranty
3
WHAT’S IN THE PACKAGE
The meter comes in a blister pack with a “CR2032” button cell
pre-installed in the battery compartment. A hard copy of this
user’s manual is inside the blister card.
P ODUCT OVE VIEW
ig. 1 below shows all controls, indicators and physical structures
of the DA 3012M, as well as the location of the battery
compartment. ig. 2 shows all possible indications on the
meter’s LCD.
Fig. 1. The controls,
indic tors nd
physic l structures
of the DAF3012M
A. Vane and sensor
protection cap
B. Vane
C. Temperature-humidity
sensor
D. LCD
E. Keypad
. Battery compartment
G. Wrist strap
H. Threaded tripod
mounting hole
4
A
B
C
D
E
GF
H
A. Air/wind
speed mode
indicator
B. RH mode
indicator
C. Barometric
pressure
mode
indicator
D. Air/wind
speed
session
value
indicators
E. Air/wind
speed units
. Barometric pressure units
G. RH unit
H. Temperature units
I. Lower readout
J. Wind Chill Index, Dew Point and Wet Bulb indicators
K. Measurement HOLD indicator
L. Memory pointer
M. Memory counter
N. Memory recall mode indicator
O. Low battery indicator
P. Compass
Q. Bearing readout
R. Upper readout
5
Fig. 2.
All possible displ y
indic tions
R A
I
KJ
BCD
O
L
E
P
H
G
F
M
N
SETUP INST UCTIONS
ACTIVATE BATTERY
1. Turn the meter over and use your thumbs or a coin to turn the
battery compartment cover ( ig. 1, Callout ) clockwise
30 degrees, in the direction marked OPEN.
2. Pull and discard the tab under the pre-installed battery.
3. Replace the battery compartment cover and turn it
counterclockwise 30 degrees until it snaps shut.
Complete Setup by carefully removing the plastic film protecting
the LCD.
OPE ATING INST UCTIONS
To power on the DA 3012M, press the red button. The LCD
will illuminate with the backlight on and show all possible display
indications for 2 seconds. The unit will then automatically enter
the measurement mode in which it was operating when it
powered off. The backlight will turn off after 15 seconds if no
front-panel button is pressed during that period. Pressing any
button begins another 15 seconds of backlight.
To power off the DA 3012M, press and hold the button for at
least 2 seconds.
To change measurement mode, start by pressing the MODE
button. This will cause the icon of the current mode to begin
flashing on the top line. Then press the SET button once or twice,
until the icon of the mode you want begins flashing on the top line.
The figure below shows the three measurement modes in their
sequence of selection using the SET button.
6
VEL
RH
BP
When the icon of the mode you want appears, flashing, on the top
line, press the MODE button once to stop it from flashing. Doing
this will cause one or more measurement unit icons below to
begin flashing. Press the MODE button again to stop those icons
from flashing. This causes the meter to enter real-time
measurement mode for the chosen parameter (air/wind speed,
RH or barometric pressure).
To hold ny p ir of me surements (“freeze” the readouts), briefly
press (but do not hold) the button (which has HOLD stenciled
above it). To release the hold and resume displaying real-time
values, briefly press the button again. This function is very useful
for making measurements in low light or when the source of air or
wind is above your head, below your knees, or around a corner. You
can make a measurement, hold it, and then read the display up to
5 minutes later after positioning the LCD at eye level.
Why do you have only 5 minutes? To extend battery life, the
DA 3012M automatically powers itself off following any 5-minute
period in which no front-panel button is pressed.
MEASURING AIR/WIND SPEED AND
TEMPERATURES
To m ke n ir/wind speed me surement, unsnap the vane
and sensor protection cap ( ig. 1, Callout A) and let it hang from
the unit by the wrist strap. Turn the vane at the top of the unit
perpendicular to the source of air or wind. It makes no difference
whether the front of back of the vane faces the flow. The
measured air/wind speed value will appear on the upper readout.
Allow a few seconds for the reading to stabilize.
The DA 3012M’s factory default air/wind speed measurement unit
is feet/minute (ft/m). To ch nge the ir speed unit, begin by
pressing the UNIT button. This will cause ft/m to begin flashing on
the right side of the upper readout ( ig. 2, Callout E). Then, within
15 seconds (before the backlight extinguishes), press the SET
7
button. This will change the flashing ft/m term to mph, also
flashing. Press the SET button again and mph will turn to knots.
Press it again to change knots to m/s.
Press the SET button as many times as
necessary until the air/wind speed unit
you prefer appears, flashing, at the
right of the upper readout. To save this
unit, press the UNIT button. The figure
at right shows the five available
air/wind speed units in their selection
sequence.
When you press the UNIT button to
save your preferred air/wind speed unit, °F—the DA 3012M’s
factory default temperature measurement unit—will begin
flashing in the lower right corner of the LCD. To keep °F as the
temperature measurement unit, begin by pressing the UNIT
button. This will cause °F to stop flashing and the meter to
resume displaying real-time air/wind speed and temperature
measurements. To change the temperature unit to °C, press the
SET button, followed by the UNIT button to save the selection.
The DA 3012M will “remember” the air/wind speed and
temperature units (as well as its operating mode and other
selected units and parameters) in use each time it powers off and
will resume operating in that mode and with those units upon
restart. So if you always use ft/m and ° for air/wind speed and
temperature measurements, you need not perform any of the
above steps. And if you always use the same air/wind speed and
temperature units (other than ft/m and ° ), you need only perform
the above procedure once. Unlike many instruments, changing the
battery does not reset all units to their factory default.
As mentioned earlier, the DA 3012M automatically begins
measuring and displaying ambient temperature upon startup. To
displ y other temper tures whose c lcul tion includes the
8
effect of wind speed or humidity (Wind Chill Index, or Wet Bulb
and Dew Point temperatures, respectively), begin by pressing the
MODE button with the meter operating in air/wind speed mode
(with VEL appearing on the top line of the LCD). This will cause
VEL to begin flashing. Then press the MODE button again. On
meters that have come fresh from the factory, this will cause the
three terms WCI, DEW and WET to appear, flashing, above the
lower readout ( ig. 2, Callout J). Within 15 seconds (before the
backlight turns off), press the SET button as many times as
necessary until the temperature you want appears by itself,
flashing, above the lower readout. Note that the temperature
below changes with each press of the SET button. To save the
temperature you want, press the MODE button while its
abbreviated term (WCI, DEW or WET) is flashing.
As with air/wind speed units, the type of temperature you select
and save becomes the display default until you change it.
When operating in Wind Chill Index mode, make sure the vane is
perpendicular to the wind direction.
DISPLAYING MIN/MAX/AVG AIR
AND WIND SPEEDS
The DA 3012M keeps track of the maximum and minimum
(fastest and slowest) and average air speed values 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 DA 3012M;
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, for example, the
fastest and slowest fans of a group should be obvious.
To displ y the m ximum, minimum or ver ge ir/wind speed
during a measurement session, press the DISP button as many
times as necessary until the label of the desired value (M x, Min
9
or Avg) appears above the upper
readout ( ig. 2, Callout D). 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 VEL 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 DA 3012M 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 ° or °C, press the SET
button, followed by the UNIT button to save the selection. To leave
the unit unchanged, press the UNIT button.
MEASURING BAROMETRIC PRESSURE
To enter barometric pressure mode, press the SET button with RH
flashing on the top line of the LCD. This will change the flashing
term to BP. To stop BP from flashing, press the MODE button.
You can now enter your preference for using the metric or Imperial
unit for barometric pressure—the kilopascal (kP ) or millibar
(mBAR), respectively. To change kPa to mBAR, begin by pressing
the UNIT button. This will cause kP to begin flashing between
the upper and lower readouts ( ig. 2, Callout ). Then press the
SET button, followed by the UNIT button to save the selection.
Saving the selected barometric pressure unit will cause the
default temperature unit at the right of the lower readout to begin
flashing. To change the unit, press the SET button, followed by the
UNIT button to save the selection. To leave the unit unchanged,
press the UNIT button.
10
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