BENETECH GT8913 Digital Anemometer Instruction Manual

BENETECH GT8913 Digital Anemometer

Introduction

Digital multifunctional anemometer is a professional instrument for measurement of wind speed, temperature, and humidity. It is designed for wind speed measurement in various environments, such as wind speed measurement engineering, quality control, and health control. It is applied in wind speed measurement for various occasions like factories, schools, offices, transportation routes, families, etc.

Functions

• Measure current wind speed, temperature and humidity.
• Measurement of current air volume, temperature and humidity. 0 Measure wind speed/ MAX wind flow/min wind flow.
• 2/3 wind flow value/ average value.
• Wind speed/flow units and temperature units selection.
• Backlight and data holding(HOLD).
• Low battery indication.
•  Automatic shutdown setting.

Name of parts(Figure 1)

1. button 1: MAX/AVG/MIN

2. button 2: confirm (ENTER), 2/3VMAX wind flow.
   

3. CT) button 3: data holding (HOLD).

4. button 4:switch between wind velocity and wind flow.

5. B button 5: Short press unit switch (UNIT) and long press to open or close key tone.

6. @) button 6: starting up, short press to turn on/off backlight, long press to shutdown.

7. button 7: short press ‘C/’F to switch temperature unit, long press to switch between temperature and humidity.

8. button 8: aera setting {AREA), record time interval  (SAMPLE), read recording number.

9. button 9: enter into read/save/record interface.

10. button O: saving one datum or enter into data recording interface (REC). \

11. button .: enter the data deleting interface.

12. LCD display.

13. Connector (align with joint hole during insertion t ).

14. Connection line.

15. Slip resistant handle.

16. Retractable drag rod.

17. Six wind wheels.

Note: In the setting interface for area, time interval of recording and reading serial number of record, buttons can be used as number button, you can complete the input by long pressing ENTER button to confirm the set value. During input, You can also press “SAMPLE/AREA” button to cancel the current setting operation.

The Note: above is only a brief introduction to button functions. For detailed function and operation description, please refer to “Operation Instruction” section in this manual.

LCD Displays

1. 2/3V :2/3 of max wind flow.
2. MAX :Maximum value.
3. AVG :Average wind velocity/ wind flow.
4.  MIN :Minimum value.
5. REDA :Read recorded data.
6. REC :Record data.
7. DEL :Delete recorded data.
8. Low battery indicator.
9. HOLD :Data holding.
10. l> ltl>D:Wind level.
11. Wind velocity unit :m/s, km/h, ft/min, knots, mph.
12. VEL: wind velocity.
13. X100: wind flow multiplier.

Specifications

• Wind Velocity Range

•  FLOW: wind flow measurement.

| Unit| Range| Resolution| of start value| Accuracy
---|---|---|---|---|---

• Wind velocity/flow value.

| mis| 0. 0-45. 0| 0.01| 0.3| ±3%±0.1

• CFM :wind flow unit (cubic feet/minute).

| Ft/min| 0. 0-8850| 0.01/0.1/1| 60| ±3%±20

• CMM :wind flow unit (cubic meter/minute).

| Knots| 0. 0-87.0| 0.01| 0.6| ±3%±0.2

• Wind temperature value/ vent area value.

| Km/h| 0. 0-160.0| 0.01| | ±3%±0.4

• CM 2 :Indicating duct area in square meter in flow function,” ° C”

| Mph| 0. 0-100| 0.01| 0.7| ±3%±0.2
is used to indicatewind temperature in metric.

• FT 2 :Indicating duct area in square feet when in flow function ;
• F” is used to indicate wind temperature in metric; 20.%RH : humidly unit

NO DATA: no recorded data

| ****

Wind flow range

CFM: 0-999900 ft’/min CMM: 0-999900m’/min

Unit             Range       Resolution           Area CFM/FT 3 /MIN) 0-999900     0.001-100     0.001-9999ft’

CMM(M 3 /MIN)  0-999900     0.001-100     0.001-9999m’

Unit Conversation

| mis| Ft/min| Knots| Km/h| Mph
1m/s| | 196.87| 1.944| 3.60| 2.24
1ft/min| 0.00508| 1| 0.00987| 0.01829| 0.01138
1knots| 0.5144| 101.27| | 1.8519| 1.1523
1km/h| 0.2778| 54.69| 0.54| 1| 0.6222
1mph| 0.4464| 87.89| 0.8679| 1.6071|

• Wind Temperature:

1. Temperature Range

• Humidity range
  

• Operating Current:
  

• Operation Conditions
  

• Storage Conditions
  

• Power supply : AAA 1.5V Alkaline battery *4

• Dimensions:
  Meter :73x38x194mm
  Vane: 74x35x2100mm (After lengthening)

• Product Weight:
  Host: 212.9g (without battery) Attached machine: 180g

Operation manual

Measurement of wind speed, temperature and humidity

• Before measurement: make sure to insert the connector plug of fan auxiliary unit with t mark downwards into host socket. If the direction is wrong, the plug may be damaged.

• Press ON button to turn on the instrument. After 1 s of LCD full screen, wind speed and wind temperature are displayed, and VEL shows up on the screen

• Press the” UNIT” key, the wind flow unit changes among mis , km/h , ft/min, knots, mph,{default unit is mis);

• Press the” °Cl°F”, the temperature changes between °Cl°F mode(defaulted as °C).

• Long press °Cl°F button to switch to display of humidity

• 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 2o·c
3. The dynamic indicator bar of wind speed will increase gradually as wind speed increases.

Wind volume measurement

• Press VEL/FLOW button to switch to FLOW mode and display wind volume.

• Press UNIT button to switch wind volume unit, and area unit will also change with wind volume unit as CMM—M2 , CFM—FT2.

• Press AREA button to enter into area setting interface. ” _ ” is displayed at the bottom left of the screen, and the spot for input flashes. At this time, the area of the tyre can be input. You can complete the input by pressing ENTER button; for example, input 1.60, then long press ENTER button and the area value is set as 1.600. In the process of inputting area value, long pressure button to cancel the current area setting.
  

• Place the probe in the duct area to measure current wind flow value right away.As shown in following figure:

• Testing Wind velocity: The bar icon (showing on the middle of LCD )changes accordingly with wind Flow/Velocity.

NOTE

• failing to enter the duct area leads to failure of measurement of the wind flow.
• If wind flow is larger than 9999, the LCD screen will show x10 or x100, indicating the measured value multiplied by x10 or x100.

lWind volume 2/3V MAX value measurement

• `In wind volume measurement interface, short press ENTER button to display 2/3 times of maximum wind volume value. At the same time, the screen will display 2/3VMAX icon, short press ENTER to exit.

• Calculation formula of 2/3MAX wind volume: FLOW=2/3MAX wind speed tuyere area.

[Measurement of maximum/average/minimum value

• When measuring wind speed and volume, press the MAX/AVG/ MIN button to measure the maximum, average and minimum values of wind speed and volume. At the same time, the screen will display MAX, AVG and MIN.

• MAX: The displayed wind speed or volume value is the maxim­ um value measured since the wind speed or volume value is set as MAX.

• AVG: The displayed wind speed or volume value is the average value in the last 1 Os.

• MIN: The displayed wind speed or volume value is the minimum value measured since the wind speed or volume value is set as MIN.

Data holding

• During measurement of wind speed and volume, press “HOLD” button to lock the data, and then press “HOLD” button to release.

[Data storage (TB: 960 data)

• Record single datum:

• Under “VEL” state, press the “SAMPLE” button, input “O”, and press “ENTER” button to confirm.

• Each time you press “REC” button, the data can be stored at a time. If data is full, the screen will display “FULL”.

• Continuously record data:

• Under “VEL” state, press “SAMPLE” button ,input recording interval (0-9999 seconds), and long press “ENTER” button to confirm.

• Press “REC” button to enter into recording interface and start recording a sum of data continuously at the set recording int­erval. At this time, each time “ENTER” button is pressed, the recording interval and measured data will be displayed at the lower left of the screen; if the data is full, the screen will display “FULL” and then return to the normal measurement interface.

• Long press “REC” button to exit recording interface and stop recording; “REC” is no longer displayed.

[Data reading

• Under normal measurement interface, press “READ” button to enter reading interface of recorded data. The bottom left side will display the serial number of recorded data first and then me assured data. Every time you press “ENTER” button, the bottom left of the screen will display the serial number first and then the recorded value.
• Press “READ” button to view the record data of next serial number.
• Press “SAMPLE” button to input the serial number of recorded  data to be viewed. After finishing input, long press “ENTER” to confirm, when the input serial number is bigger than the serial number of stored record, the recorded data with the largest serial number will be displayed.
• Long press “READ” button to exit data reading interface. The icon “READ” will no longer be displayed.

Data clearing

• After pressing “DEL” button for 2s, “DEL” will be displayed on the upper right corner of the screen. When “CLR” is displayed on the center of the screen, the data of the instrument will be cleared.

Automatic shutdown

• The instrument has automatic shutdown function, which will  automatically shut down after 5 minutes of no button operation.
• 0 No automatic shutdown can also be set. Long press “Enter” button to start, the screen displays “no”, and the instrument will not automatically shut down, so you need to manually turn it down. No automatic shutdown is only for the current time, and the instrument will return to automatic shutdown in the next time.

Others

Familiar trouble shooting

• The following is a list of actions to be taken if the unit is not working properly:
• Screen is blank: Check the battery is inserted correctly. Open
• the battery door on the bottom rear of the unit. The”+””-” symbols on the battery should match the corresponding”+ “”-” symbols on the inside of the battery compartment.
• 0 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.
• 0 If the unit can not read the wind flow value properly ,please check  if the vane is block or not.
• When the instrument cannot read the temperature or humidity data correctly, please check if the connection wire between blade handle and the instrument is loose.
• If the unit can not read data properly, please check if it is operated under the rule temperature and humidity situation.

Maintenance & Warranty

• Maintenance:
• Replacing the battery and product maintenance:
• Remove the battery from the unit if ii 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.
• 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:

• Splashes of water or high levels of dust.
• Air with high salt or Sulphur content.
• Air with other gases or chemical materials.
• High temperature or humidity or direct sunlight.

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 .

Special Statement:

• Disposal of battery should be handled in accordance with local laws and regulations.
• Our company shall hold no any responsibility  resulting fr­omusing output from this product as an direct or indirect evidence.
• This company reserves the right of changing the product design and contents of instruction if changed the separate notice isn’t given.

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