background image

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HOLD

1

MAX/MIN

2

UNIT

3

LIGHT

5

VEL/FLOW

4

C/  F

6

READ

7

RST/CLR

8

REC

9

START/NEXT

SAMPLE

AREA

0

OPTION
ENTER

Air Flow Anemometer

Wind direction

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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 

/

 .

Duct area

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:

Summary of Contents for GM8902

Page 1: ...Version 8902 EN 0 AIR FLOW ANEMOMETER INSTRUCTION MANUAL FLOW CMM M 2...

Page 2: ...ith 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 c...

Page 3: ...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 bat...

Page 4: ...rature 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...

Page 5: ...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 appe...

Page 6: ...y 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...

Page 7: ...e Measurement 1 Small Vanes pattern will showing along with the display of TEMP symbol 2 Press button or number 6 key to Switch Duct area Measurement of Windflow If the area value has been set before...

Page 8: ...t 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...

Page 9: ...ill 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 o...

Page 10: ...r 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 un...

Page 11: ...ry 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 followi...

Page 12: ...ction 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...

Page 13: ...l 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 Exc...

Page 14: ...ack 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 C...

Page 15: ...f 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 po...

Page 16: ...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...

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