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
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, e.g. at draughty windows.
testo 405 thermal anemometer with permanently mounted telescope, including duct bracket, attachment clip and batteries.
| Temperature - NTC | |
|---|---|
Measuring range | -20 to +50 °C |
Accuracy | ±0.5 °C |
Resolution | 0.1 °C |
| Velocity -Thermal anemometer | |
|---|---|
Measuring range | 0 to 5 m/s (-20 to 0 °C) 0 to 10 m/s (0 to +50 °C) 0 to 99990 m³/h |
Accuracy | ±(0.1 m/s + 5 % of mv) (0 to 2 m/s) ±(0.3 m/s + 5 % of mv) (Remaining Range) |
Resolution | 0.01 m/s |
| General technical data | |
|---|---|
Weight | 115 g (with batteries, without packaging) |
Dimensions | 490 x 37 x 36 mm |
Operating temperature | 0 to +50 °C |
Battery type | 3 AAA micro batteries |
Battery life | Approx. 20 h |
Display type | LCD (Liquid Crystal Display) |
Length probe shaft | 300 mm |
Diameter probe shaft | 16 mm |
Diameter probe shaft tip | 12 mm |
Storage temperature | -20 to +70 °C |
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.
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.
