isweek GM8902 User manual

Version：8902-EN-0
AIR FLOW ANEMOMETER
INSTRUCTION MANUAL
FLOW
CMM
M2

-01-
------------------------------------------------(01)
-------------------------------------------------(02)
------------------------------------(03)
------------------------------------------- (05)
---------------------------------------- - (07)
Check up
Features
Diagram of the unit
LCD Displays
Specifications -
------------------------------------- -(27)
-----------------------------(28)
Trouble Shooting -
Maintenance & Warranty
Measurement of wind velocity and temperature-
Measurement of wind flow
Measurement of 2\3 V max wind flow
Measurement of average wind flow
Measurement of Max/Min wind Flow
Holding/Storing/Reading and Clearing the data
Connection With PC
-(09)
--------------- ----------- (11)
---------- ---- (13)
-------- -------- (14)
---------------(16)
--(17)
-----------------------------------(19)
CONTENTS
1、Before Use
2、Operation
3、Other Items
Thank you for purchasing our Air Flow Anemometer !
Carefully unpack your kit and ensure that you have the
following Items .In case that any item is missing or if
you find any mismatch or damage ,promptly contact
your local dealer .
1、Before Use Notice
Check up
Air Flow Anemometer unit 1pcs
Yellow sticker pockt ---------------------------------- 1pcs
Auxiliary Fan 1pcs
Software Disc For Anemometer 1pcs
USB Computer connecting cable 1pcs
1.5V AAA alkaline battery 4pcs
English Instruction Manual ----------- 1pcs
PP Packing box - 1pcs
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-02- -03-
Air Flow
Anemometer
HOL D
1
MAX/ MIN
2
UNI T
3
LIG HT
5
VEL/ FLOW
4
C/ F
6
REA D
7
RST/ CLR
8
REC
9
START/ NEXT SAM PLE
AREA
0
OPTI ON
ENTE R
Air Flow Anemometer
1
2
15
5
6
7
8
3
9
10
14
13
12
11
16
17
4
Measurement of wind velocity, temperature and flow
Unit conversion of wind velocity, temperature and flow
Measurement of maximum and minimum wind velocity
Measurement of 2/3 Vmax and average wind flow
Data holding, storing and deleting function
Low battery indicating function
Auto power off function (power off automatically if no
further operation for 10 minutes )
Memory of 500 records
Backlight
Connecting to PC with USB cable
Audio key pressing alert
Large LCD display
Features Diagram of the unit

HOLD
1
MAX /MI N
2
UNIT
3
LIGHT
5
VEL /FLO W
4
READ
7
RST /CLR
8
REC
9
SAM PLE
ARE A
0
START /NEXT
OPT ION
ENT ER
C/ F
6
-04- -05-
1. ：Air flow symbol
2. ：No data store symbol
3. Dynamic indicator bar of velocity or air flow
4. ：Enter duct area values symbol
5. ：Air multiplier
6. Wind velocity and air flow display area
7. Duct area display area/Wind temperature display
8. ：Low battery icon
9. ：Indicating duct area in square feet
when in flow function ; ℉ is used to indicate
wind temperature in metric;
FLOW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
19
18
20
21
22
27 26 25 24 23
FT 2
1). USB interface
2). LCD display
3). : ON/ OFF key
4). :Data holding key
5). :Unit transform key
6). :Backlight on/off key
7). :Data read key
8). :Measuring key for average value of wind flow
9). :Reset key in READ mode/clear recorded
10). :Duct area input and sampling time setting key
11). :Wind flow AVG 2/3 MAX and figure input
12). :Data record key
13). :Temperature unit switch
14). :Wind velocity/flow transform key
15). :Max/Min value switch
16). Connecting wire
17). Fan
NOTE:
Aforesaid key function descriptions is brief
introduction.
pls read operation instructions parts for details.
LCD Dis play

1. Wind Velocity Range ：
2. Wind flow range ：
3
CMM：0-999900m /min
3
CFM：0-999900 ft /min
3. Unit Conversatin ：
-06-
VEL
AV G
MIN
READ
2/3V MAX
m/s
km/h
10. ：Indicating duct area in square meter in flow
function, "℃ " is used to indicate
wind temperature in metric.
11. ：Wind flow unit (cube meter / minute)
12. ：Wind flow unit (cube foot / minute)
13. ：Wind velocity unit (mile / hour)
14. ：Wind velocity unit (sea mile / hour)
15. ：Wind velocity unit (foot / minute)
16. ：Wind velocity unit (kilometer / hour)
17. ：Wind velocity unit (meter / second)
19. ：Windchill symbol
20. ：Velocity sampling rate; Sequential number
display area of average wind flow
21. ： When connecting PC with USB cable, this
symbol appears
22. ：Wind velocity symbol
23. : Recording the using number and signals
24. : Read stored data symbol
25. : 2/3 of maximum value measurement (one of
the wind flow measuring method)
26. : Showing minimum values
27. : When measuring average values （one of the
wind flow measuring Method）this symbol
appears.
18. ：Data hold
ft/min
knots
mph
CFM
CMM
CM 2
-07-
Specifications
Resolution
0.001
0.01/0.1/1
0.01/0.01
0.001
0.001/0.01
Wind Velocity
0.0-45.0
0.0-8800
0.0-88.0
0.0-140.0
0.0-100
Unit
m/s
Ft/min
Knots
Km/h
Mph
Accouracy
±3%±0.1
±3%±20
±3%±0.2
±3%±0.4
±3%±0.2
0.3
60
0.6
1.0
0.7
Lowest Point
of start value
Resolution
0.001-100
0.001-100
Range
0-999900
0-999900
Unit
3
CFM(FT /MIN)
3
CMM(M /MIN)
Area
0.001-9999
0.001-9999
Knots
1.944
0.00987
1
0.54
0.8679
Ft/min
196.87
1
101.27
54.69
87.89
m/s
1
0.00508
0.5144
0.2778
0.4464
1m/s
1ft/min
1knots
1km/h
1mph
Km/h
3.60
0.01829
1.8519
1
1.6071
Mph
2.24
0.01138
1.1523
0.6222
1
Unit
℃
℉
Scale
0.0-45.0
32.0-113.0
Resolution
0.1
0.1
Accuracy
±1.0℃
±1.8℉
4.Air Temperature Range :
Wind Temperature
HO LD

-08- -09-
AAA 1.5V
-+
AAA 1.5V
-+
AAA 1.5V
-+
0-50℃ (32℉~122℉)
0-60℃ (32℉~140℉)
Humidity
≤80% RH
Host
Fan
-40℃~60℃ (-40℉~140℉)
≤80%RH
5. Operation Conditions :
6. Storage Conditions :
7、Power supply : AAA 1.5V Alkaline battery *4
8、Low battery indicating : 4.4V±0.2V
9、Stand by current ≤2uA
10、Operating Current ≤18mA
11、Battery use life :20H (Continuous Use )
12、Dimensions:
Meter :77x36x164mm
Vane: 65x29x172mm
13、Net Weight : 330G (Not Included Battery )
Temperature
Temperature
Humidity
Measurement of Wind Velocity and Temperature
Press The " " key, all the symbols will be shown on
the screen for 1 second, then the unit goes into current
wind velocity and temperature measuring mode, the
LCD screen : as shown in following figure
Open the battery door , and install the batteries
properly as shown in following figure:
Select your desired wind velocity and temperature unit :
1). Press the " UNIT " key, the wind flow unit changes
among m/s 、km/h 、ft/min、knots、mph,(default
unit is m/s);
2). Press the " ℃/℉ " ，the temperature changes
between ℃ / ℉ mode(defaulted as ℃).
2、Operation Instruction

-10-
HOLD
1
MAX/MIN
2
UNIT
3
LIGHT
5
VEL/FLOW
4
C/ F
6
READ
7
RST/CLR
8
REC
9
START/NEXT SAMP LE
AREA
0
OPTION
ENTER
Air Flow Anemometer
Wi nd d irection
-11-
Hold the Anemometer with your hand , place the vane in
the air flow with the air direction matching the direction
of the arrows printed on the inner walls of the vane (
please do not extrude the fan leaf, which may cause the
inaccuracy measurement )
1). Wait for 2 seconds with the unit is ready for use.
2). Place the vane in the same direction of the wind to
capture the accurate data ,temperature within 20℃
3). Press light key to open or close the backlight.
Backlight will turn on if the vane is rotating or
within 7 seconds after a key is pressed.Backlight
will turn off if there is no further operation of
key for 7 seconds.
Wind /Air Temperature Measurement:
1). Small Vanes pattern will showing along with the
display of "TEMP" symbol.
2). Press button ℃/℉(or number 6 key) to Switch ℃/℉ .
Du ct a re a
Measurement of Windflow
(If the area value has
been set before, the
last setting will be shown )
Press the "VEL/FLOW" key to get into "FLOW" mode,
the LCD screen as shown in following figure :
Select your desired unit of wind flow and duct area:
a. Press the "UNIT" key, the wind flow unit will convert
between CMM and CFM (the defaulted unit is CMM)
b. Press the "UNIT" key, the area unit will convert
2 2 2
between M and FT . (the defaulted unit is M )
2 2
c. Area unit: M and FT will convert accordingly with
the conversion of the wind flow unit.
2
If wind flow unit is CMM, the area unit will be M ;
2
If wind flow unit is CFM, the area unit will be FT .
Press the "AREA " key, the 4 digitals on the upper
LCD disappears at this time press numeric
keys to input a new duct area, such as 1.6, then press
the "ENTER" key to confirm. At this time the LCD
screen as shown in following figure:

-12- -13-
D
AREA = 4
HOLD
1
MAX/MIN
2
UNIT
3
LIGHT
5
VEL/FLOW
4
C/ F
6
READ
7
RST/CLR
8
REC
9
START/NEXT SAMP LE
AREA
0
OPTION
ENTER
Air Flow Anemometer
Note:
a. failing to enter the duct area leads to failure of
measurement of the wind flow.
b. If wind flow is larger than 9999, the LCD screen
will show x10 or x100, indicating the measured value
multiplied by x10 or x100.
Wind Flow Calculate Formula : Flow =velocity *(Free Area)
Testing Wind velocity : The bar icon (showing on
the middle of LCD )changes accordingly with wind
Flow/Velocity
Place the vane in the duct area to measure current
wind flow value right away.
As shown in following figure:
Aim the vane of the attached unit at duct area properly,
take measurement of 2/3 V max wind flow right away,
press again the "OPTION" key exit to measurement
of 2/3 max wind flow.
2/3 Max Wind flow calculate formula:
FLOW =2/3*Max wind Velocity *duct Area
Measurement of 2/3 Vmax Wind Flow
Press the "VEL/FLOW" key to enter into "FLOW" mode;
Select your desired unit by pressing the UNIT key,for
example: select CMM for wind flow unit,
2
M for area unit;
Press the "AREA" key,letter on the LCD will disappe-
ared at this time you can input duct area, such as 1.6,
press "ENTER" key to confirm;
Press again the "OPTION" key to select "2/3 Vmax",
here the LCD screen as shown in following figure:

-14- -15-
Measurement Of Average Wind Flow
Press the "VEL/FLOW" key to get into "FLOW" mode;
Once again press the "OPTION" key exit to measure-
ment of average wind flow.
Average Wind flow calculate formula
Flow =1/N∑ (Velocity)*(free Area)
Note
The average vaule only displays by pressing NEXT
key ,if there is wind in the duct Area ,then the LCD
Screen will shows the measured Average Wind flow
Aim the vane at certain point of duct area properly,
press the "NEXT" key, on the right bottom of the LCD
will show serial number, in the meantime you can take
measurement of the first group wind flow values.
As shown in following figure:
Then select another test point, press the NEXT key to
take measurement of the second group average wind
flow values.
Repeat above steps to measure as many as 12 groups
of average wind flow values. As shown in following
figure:
Select your desired unit by pressing the UNIT key,for
example: select CMM for wind flow unit,
2
M for area unit;
Press the "AREA" key, letter on the LCD will disappe-
ared at this time you can input duct area, such as 1.6,
press "ENTER" key confirm;
Press again the "OPTION" key to select "AVG", here the
LCD screen as shown in following figure:

-16- -17-
In wind flow and velocity measuring process, press the
"MAX/MIN" key to obtain the maximum and minimum
values, press again to exit. For example:
1).When measuring maximum value of wind velocity, a
"MAX" will be shown on the upper LCD screen, as
shown in following figure:
2). When measuring minimum value of wind velocity, a
"MIN" will be shown on the upper LCD screen, as
shown in following figure:
Note:
Operation of Max/Min wind flow measurement is the
same as wind velocity.
Max and min measurement
Data holding:
When taking measurement of wind velocity and flow, press
the "HOLD" key to freeze the Data , press the "HOLD" key
again return to normal operation.
Data storage:
1). Instantaneous (one-shot) data storage: under "VEL" state,
set the sampling rate=0 by pressing "SAMPLE" key and
in put a "0" sampling time and then press "ENTER".
Now, each time "REC" is pressed, the present reading
will be stored.
2). Automatic data storage: under "VEL" state, press the "
SAMPLE" key and input sampling rate, (the sampling
rate from 1~99 seconds using the numeric keys to enter
your desire rate,) then press the "ENTER" key to confirm.
Press the "REC" key to begin storing readings in every
sampling rate. The "REC" icon will appear on the LCD
indicating the data storage function being activated. Press
again the "REC"key to finish data storage.
3). Press "REC" Key to stop recording.
Reading data stored sequentially:
1). Press the "READ" key, you can read the stored data
in memory sequentially, the LCD will first shows serial
number then shows the data.
2). Press "RST" key to return normal operation.
As shown in following figure:
Date holding /Storeage/Reading and clearing

NEXT
-18- -19-
Reading Data stored In memory Ramdomly:
On read Status ,Press the "SAMPLE" Key and enter the
number of the record in questions and press "ENTER"
Key then the desired data will be displayed Press "
RESET" Key to exit As shown in following figure:
.In instantaneous data storage mode, you should
first press "SAMPLE" Key and input "0" second ,
then press "ENTER" to finish the rate set up.
b.Press the "REC" Key to finish the recording,
otherwise the recording will be invalid.
c.The maximum number of readings can be stored 500.
d.If your reading number is bigger than the total
quantity of data stored in memory ,the LCD will
shows the last stored.
Note :
a
Clearing the Stored data:
Press down the "CLEAR" Key for 5 seconds then
CRL appears on the LCDindicating , all the stored
data being Cleared. As shown in following figure:
Connection With Pc
1). Requirement of computer configuration:
CPU : Pentium 600MHZ Or above ;
One free available USB Connecting Interface;
The lowest screen resolution of monitor is 800*600 (
or much higher ),color mode;
At least 8MB available memory;
At least 50MB available disk memory;
Operation system : MICROSOFT WINDOWS 98/ME/
2000/XP HOME/XP PROFESSIONAL 32BIT
2). Install the software from the disc:
Place the attached Disc in your disc driver open the
disc driver plate symbol , double click the "
Anemometer setup .exe " .To enter into Program
installation window, click "NEXT" , as show in
following figure:

Please follow the install shield wizard and click on
"NEXT"，and select " Create a desktop icon" .
Until "Finish" is shown，select "Run Anemometer"
to complet software installation, as figure below：
FINISH
Menu introduction as shown in following figure：
File menu bar： Option menu bar： Helpmenu bar：
3). Software interface:
Menu
Bar
-20- -21-
NOTE:
1).Double click the software shortcut on the desktop
( to start from menu, the route is Start /Programme /
Anemometer ) ;
2). If you want to delete this software ,please open "
Controlling Panel " then double click "add/delete
program" Choose "Anemometer" on the list then
click the "delete" button.
Tool
Bar

Order
Real time measure
Open
Save
Import
Export
Printe
Print Setup
Remark：
Language in : English / Traditional Chinese/
Simplified Chinese.The default setting is in English,
from English into Simplified Chinese or Traditional
Chinese can be setting directly; If change Simplified
Chinese or Traditional Chinese into English, you need
to re-start running the software.
-22- -23-
Order function
Real time data measurement, the measured
data will be real time as shown on the computer.
Open measurement data file that is saved as
the LAB format
Save real time measurement data
Import data stored in the anemometer to
computer
Export the saved data to Excel.
Printer setup
Print data sheet
Real time data measurement, the measured
data will be real time as shown on the computer.
Import data stored in the anemometer to computer
Open measurement data file that is saved as the
LAB format
Save real time measurement data
Export the saved data to Excel.
Print the recorded data
System setup
System information
Close the software
Button Function
Tool bar introduction shown in following figure:as

5). Real time measurement：
Click on "File/Real Time Measure" or tool bar
button to entre real time measurement mode; Press
"Start to Measure" button to start measurement and
record data, shown as follow figure:
To stop real time measurement, click on "Stop Measure".
-24- -25-
4). Insert one end of the connecting cable into the USB
interface of the top anemometer host;
Insert other end of the connecting cable into free
interface port of on the computer back,
If the unit connect with PC LCD will display
symbol
If the unit dis-connect with PC symbol will not
shown.
:
；
:
Button Function
Click to start real time measurement
Click to stop real time measurement
Click to clear out real time measured data
Button introduction:
Click it to print riqht wind velocity and
temperature wave graphic
Click to display all wind velocity and
temperature wave graphic
Click to store real time measured data,
input file name in pop-up window, click to
save, then also may click FILE\SAVE.
(Saved as LAB format)
Click to move Wind Velocity and Temperture
left side
Click to move Wind Velocity and Temperture
riqht side

Start to
Import
-26- -27-
BUTTON
Button introduction:
Function
Click to download data from anemometer.
In download process, please don't switch
over the picture in order to avoid appearing
over time mistake "Over Time".
Click to save the downloaded data, input
file name in pop-up window, click to save
then. (Saved as LAB format)
6). Download of measurement data:
Click the 'Import Data" in "File" menu bar or Import
Data button on tool bar will enter download
contact interface of measured data, click the start to
Import button on bottom to import the stored data into
computer, as shown in following figure:
F a m i l i a r t r o u b l e s h o o t i n g
The following is a list of actions to be taken if the unit is
not working properly:
1). Screen is blank
Check the battery is inserted correctly. Open the bat-
tery door on the bottom rear of the unit. The “+ ” “
-” symbols on the battery should match the corres-
ponding “+ ”“-”symbols on the inside of the
battery compartment.
2). If the unit can not connect to PC normally, please
check the USB cable is OK, if the cable can not be
used formally, please replace for a new one.
3). If the unit can not read the wind flow value properly,
please check if the vane is block or not.
4). If the unit can not read the wind temperature value
properly, please check if the heat resistor is fall off or
damaged by manual.
5). If the unit can not read data properly, please check it
is operated under the rule temperature and humidity
situation.
Note:
When not connecting to PC, the unit will power off
automatically after 10 minutes if no any operation
after power on.
3. Other Items

-28- -29-
M a i n t e n a n c e & W a r r a n t y
1). Maintenance:
Replacing the battery and product maintenance:
a. Remove the battery from the unit if it is not required
for extended periods of time in order to avoid
damage to the battery compartment and the electrode
resulting from a leaking battery.
b. After power on, if a symbol “ ”appears on the
LCD, indicating that you should replace the battery
in order to avoid inaccurate measuring reading.
Otherwise the battery is very possible leak that will
seriously damage the unit life.
The battery compartment is on the down rear of the
unit, open the battery door, replace the old battery
for new battery (notice the battery polarity), close
the battery door.
Cleaning the casing：
Never use alcohol or thinner to clean the unit casing,
which will especially erode the LCD surface; just clean
the unit lightly as needed with little clean water.
Never impact the unit or use on humidity condition.
Do not store or use the unit in following locations where
the unit may be subject to:
a. Splashes of water or high levels of dust.
b. Air with high salt or sulphur content.
c. Air with other gases or chemical materials.
d. High temperature or humidity (above50℃, 90%,) or
direct sunlight.
2). Warranty:
About relative warranties please read provided
warranty card.
We disclaim any liability due to: transportation
damages; incorrect use or operation; manipulation,
alterations or repair attempts; without warranty card,
invoice.
3). Specific Declarations:
a. The product design and the manual updating,
repairing by technician authorized by us, do not try
any alternations or repair attempts.
b. Disposal of battery should in accordance with local
laws and regulations.