Product advantages:

 Measuring the amount of wind up to 99,990 m3 / h

 Rotating display, easy to read

 300mm telescopic measuring rod

 Suitable for detecting the ventilation ducts

 Product Description

 testo 405 is a thermal anemometer. It can measure wind speed, wind and temperature. testo 405 is suitable for detection of ventilation ducts, vents or sealed windows.

 Technical parameters

 Storage temperature: -20 ... +70 ° C

 Operating temperature: 0 ... +50 ° C

 Battery Type: Section 3 AAA micro batteries (not included package, are unable to pass)

 Battery life: about 20 hours

 Dimensions: 490 x 37 x 36 mm

 NTC

 Technical parameters

 Measuring range: -20 ... +50 ° C

 Accuracy class: ± 0.5 ° C

 Resolution: 0.1 ° C

 Thermal

 Technical parameters

 Measuring range:

 0 ... 5 m / s (-20 ... 0 ° C)

 0 ... 10 m / s (0 ... +50 ° C)

 Accuracy:

 ± (0.1 m / s + 5% measured value) (0 ... +2 m / s)

 ± (0.3 m / s + 5% measured value) (remaining range)

 Resolution: 0.01 m / s

 Technical parameters

 Measuring range: 0 ... +99990 m³ / h

 Measurement of indoor air velocity

 For workers to feel comfortable in their indoor working environments, "thermal comfort" has to prevail. The EN 13779 describes this as a state that prevails when people are satisfied with the air temperature, humidity, air movement and thermal radiation in a room, and require neither hotter, colder, nor drier or more humid indoor air.

 The testo 405 is particularly well suited to measuring indoor flow velocity. Low air velocities, such as at draughty windows, can therefore be precisely located and measured extremely accurately.

   Measurement in ventilation ducts 

   Observance of air flows in the ventilation duct is of utmost importance for the function of the ventilation and air conditioning system. If the air flows are smaller than intended, the removal of room loads (heating, cooling and substance loads) may not be ensured in certain circumstances. Therefore, the most accurate recording of air flows as possible is particularly important. 

   Our thermal anemometer testo 405 allows particularly cost-effective measurement of low air velocities. It enables the accurate and parallel measurement of air flow, volumetric flow and temperature. The extendible telescope allows measurement at a depth of up to 300 mm. 

   The display can be swivelled into various positions, enabling optimum measurement readout.