testo 405 thermal anemometer
- Measurement of air velocity, volumetric flow and air temperature
- For measurements in ventilation ducts and in rooms
- Particularly precise in the range between 0 and 2 m/s
- Telescope extendible to 300 mm
Use the testo 405 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.
Internal Reference :
0560 4053Description
If, in your capacity as an HVAC engineer, you carry out fast check measurements in ventilation ducts or in rooms, then our testo 405 thermal anemometer is a must-have. This versatile thermal 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, while volumetric flows are calculated up to 99,990 m^3/h using the instrument's built-in volumetric flow meter functions.
The extendible telescope (up to 300 mm) makes the testo 405 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 included duct bracket offers key practical advantages for this HVAC airflow meter, allowing you to optimally position the telescope in the ventilation duct to obtain precise measurement results.
Since 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, such as those found at draughty windows, are quickly located and accurately measured using this compact thermal anemometer. It is the ideal tool for ensuring indoor comfort and system efficiency.
Integrated sensor protection is a key feature of the testo 405. When you are not using the device, a rotating protective cap protects the thermal flow sensor from mechanical stress and dust. This ensures that your testo 405 anemometer remains an accurate and reliable HVAC airflow meter for long-term use in the field.
Delivery Scope
testo 405 thermal anemometer with permanently mounted telescope, including duct bracket, attachment clip and batteries.
Frequently Asked Questions
The testo 405 anemometer features an integrated calculation function. By entering the duct cross-sectional area directly into the device, it automatically converts air velocity readings into a volume flow result, acting as a highly portable volumetric flow meter for residential and commercial ducts.
Unlike vane anemometers that require a minimum speed to spin the blades, this thermal anemometer uses hot-wire technology. This allows the testo 405 to measure extremely low air velocities (down to 0 m/s), making it perfect for detecting subtle drafts.
While the testo 405 is a powerful HVAC airflow meter, its telescope extends to 300 mm. It is ideal for standard residential and commercial ventilation ducts. For much larger industrial ducts, we recommend the Testo 440 or 400 series with longer telescopic probes.
The sensor at the tip of a thermal anemometer is very delicate. The testo 405 includes a unique rotating cap that mechanically shields the sensor when not in use, preventing dust buildup and physical damage during storage in your tool bag.
Yes. In addition to being a precise HVAC airflow meter, the device includes an NTC thermistor sensor, allowing it to measure air temperature simultaneously with air velocity and volumetric flow.