testo 405 Low Cost Thermal Anemometer

$192.50 inc. GST

Key Features:

3 in 1 Air Temperature,  Air velocity  &  Volumetric Air flow

Telescopic handle to 300 mm

Illuminated display

Volume flow calculation up to 99,990 m3/h


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Use the Testo 405 low cost thermal anemometer to measure air velocity, volumetric flow and air temperature. It is suitable for carrying out quick check measurements in ventilation ducts and for measuring the air velocity in rooms.

If, in your capacity as an HVAC engineer / technician, you carry out fast check measurements in ventilation ducts or in rooms, then the Testo 405 thermal anemometer is a must-have. The anemometer features a permanently mounted telescope and enables you to measure air flow, volumetric flow and air temperature. The measuring range for flow is between 0 to 10 m/s, volumetric flows are calculated up to 99,990 m3/h.

 The extendable telescope (up to 300 mm) makes the thermal anemometer particularly suitable for flow measurements in ventilation ducts. The illuminated display can be swivelled into various positions, ensuring that the readings can be read off comfortably. The duct bracket (included in the delivery) offers key practical advantages. You can use this to optimally position the telescope in the ventilation duct and obtain precise measurement results.

The testo 405 thermal anemometer measures particularly accurately in the range between 0 and 2 m/s, you can also use it to measure the air velocity in rooms. Low air velocities, are quickly located and accurately measured using the anemometer.

Integrated sensor protection: when you are not using the testo 405 thermal anemometer, the rotating protective cap protects the sensors from dust.


Technical Data

Storage Temperature -20 to +70 °C 
Operating temperature  --10 to +50 °C 
Battery type 2 AAA micro batteries
Dimensions  490 x 37 x 36 mm 


Instrument Sensor 

Measuring range  Temperature   -20 to +50 °C 
  Air Velocity 0 to 5 m/s (-20 to 0 °C) | 0 to 10 m/s (0 to +50 °C) 
  Volume Flow 0 to +99990 m³/h  
Accuracy Temperature  ±0.5 °C 
  Air Velocity ±(0.1 m/s + 5% of mv) (0 to +2 m/s) | ±(0.3 m/s + 5% of mv) (remaining range)
Resolution  Temperature  0.1 °C | 0.01 m/s 
  Air Velocity 


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