GAOTek Anemometer with Flow Velocity Measuring (Auto Off)

This Anemometer with Flow Velocity Measuring (Auto Off), temperature measurement, chill temperature and airspeed at air outlet measuring auto off after 10 minutes in idle state.




GAOTek Anemometer with Flow Velocity Measuring (Auto Off), temperature measurement, chill temperature and airspeed at air outlet measuring auto off after 10 minutes in idle state. It holds the current reading with various measuring units. It has user friendly display with different indicators.  The indicators show Max and Min measured values. The Plastic impellor NTC Temperature Sensor measures the temperature. It has backlight which helps the user to view and read the measurement reading even in dark places.

Key Features

  • It has hold button to freeze the readings
  • It has backlight to help to operate the meter even at dark
  • Built in Ф 65 mm vane
  • Auto off function

Technical Specifications

Range 0.4 m/s ~ 30 m/s
Measuring Units ft/min, m/s, km/h, mph, knots, Bft
Resolution 0.1 m/s, 0.1 °C/0.1 °F
Accuracy + (3% reading + 0.2 m/s)
Sampling Rate 0.5 s
Display 4 digits LCD
Power Supply 1 X 9 V, 6F22 battery
Battery Life 70 hours with backlight off
Operating Humidity 10 % ~ 90 % RH Relative Humidity
Storage Humidity 10 % ~ 75 % RH
Sensor Cable Length 6.56 ft. (2 m) after Stretched
Size 2.87 in x 6.10 in x 1.41 in  (73 mm x 155 mm x 36 mm)
Weight 11.64 oz. (330 g) – battery Included
Storage Temperature 14 °F ~ 140 °F (-10 °C ~ +60 °C)
Operating Temperature 32 °C ~  122 °F (0 °C ~ + 50 °C)

Additional Information




b.Protective Cover



e.Battery Compartment


a.Air Velocity

b.Air Velocity Units

c.Max, Min Value

d.Hold the current reading

e.Battery indication


  •  [] Switch on or off

Switch on : Put in battery, press the button, it displays fully and it immediately ready for the measurement

Switch off: Automatically goes off in 10mins of idle time or by pressing the button[]

  • Switch on or off the backlight

Press this button to switch the backlight on or off. It goes off automatically after 10 secs of idle time. If backlight is used less then the battery power stay longer

  • [UNITS]Choose air Velocity units

Press this button to choose the desired unit. The available units are m/s, ft/min, km/h, mph and knots. The current unit will be reserved for the next measurement even after switching off the meter

Note: The Bft value will be displayed on the screen directly. The max value is 12. Please refer the maintenance table for the comparison of Bft and air velocity

  • [Max/Min] Displays the Max and Min Value

Press this button once to see the Max value. Press this button twice to see the Min value. Press it again to go to measurement mode.

  • [HOLD]: Hold the current reading

Press this button to freeze the current reading on the screen. Press again to go to measurement mode.

Operations Guide

Air Velocity Measurment

  • Switch on the device by pressing[] button
  • Choose the desired air velocity unit using [UNITS] button
  • Make sure the axle of the impellor is parallel with wind direction

Note : To avoid measuring error  keep the probe,  which has yellow stick,  against the air flow

Be sure that the angle between the axle and the wind direction  is no more than 20 oC

Battery Replacement

To maintain the measurement accuracy, please replace the battery when the low battery indicator  starts flashing on the display

  • Take off the protective cover carefully
  • Unscrew the battery cover from the back of the meter
  • Replace the new 9V, 6F22 battery after checking positive and negative poles
  • Put back the battery cover and protective cover

Note: If the device won’t be used for a long time please take the battery out. In case leakage it might cause the damage the device.

Take the used batteries to the collection point.

Send the unusable devices back to the manufacturer or dispose it in environmentally friendly way


Clean the surface of the device with a wet cloth or household cleaner.

Do not use any corrosive liquid on the device.

Force Wind (Knots) WMO Classification Appearance of Wind Effects
On the water On land
0 < 1 Calm Sea surface smooth and mirror-like appearance Calm, smoke rises vertically
1 1-3 Light Air Scaly ripples, no foam crests Smoke drift indicates wind direction, still wind wanes
2 4-6 Light Breeze Small wavelets, crests glassy, no breaking Wind felt on face, leaves rustle, vanes begin to move
3 7-10 Gentle Breeze Large wavelets, crests begin to break, scattered whitecaps Leaves and small twigs constantly moving light flags extended
4 11-16 Moderate Breeze small waves 1-4 ft. becoming longer, numerous whitecaps Dust, leaves, and loose paper lifted, Small tree branches Small trees in leaf begin to sway
5 17-21 Fresh Breeze Moderate waves

4-8 ft taking longer form, many whitecaps, some spray

Small trees in leaf begin to sway


6 22-27 Strong Breeze Larger waves 8-13 ft, whitecaps common more spray Larger trees branches moving, whistling in Whole trees moving, resistance felt walking against wind.
7 28-33 Near Gale Sea heaps up, waves 13-20ft, white foam streaks off breakers All trees are moving, resistance felt walking against the wind
8 34-40 Gale Moderately high (13-20 ft) waves of greater length, edges of crests begin to break into spindrift, foam blown in treaks Whole trees in motion, resistance felt walking against the wind


9 41-47 Strong Gale High waves (20 ft), sea begins to roll, dense streaks of foam, spray may reduce visibility Slight structural damage occurs, slate blows off roofs


10 48-55 Storm Very high waves (20-30 ft) with overhanging crests sea white with densely blown foam, heavy rolling lowered visibility Seldom experienced on land, trees broken or uprooted, “considerable Structural damage”


11 56-63 Violent Storm Exceptionally high (30-45 ft) waves, foam patches cover sea, visibility more reduced


Widespread damage to vegetation. Many roofing surfaces are damaged; asphalt tiles that have curled up and/or fractured due to age may break away completely
12 64+ Hurricane Air filled with foam, waves over 45ft, sea completely white with driving spray, visibility greatly reduced


Very widespread damage to vegetation. Some windows may break, mobile homes and poorly constructed sheds and barns are damaged. Debris may be hurled about

Learn About New Products, Deals & Specials

Subscribe To Our Monthly Newsletter

Stay up to date with new products and sale products on all our test equipment.