• A measuring instrument for all climate-related parameters
• Intuitive: clearly structured measurement menu for volume flow and determination of air velocity in ventilation ducts
• Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements
• Extendible with a wide range of probes
• Analytical software for creating professional reports and measurement data management
• Digital probes eliminate any additional measurement uncertainty of the measuring instrument

The testo 440 air velocity and IAQ meter combines all the benefits of a compact handheld device with intuitive measurement menus and a comprehensive selection of air velocity & IAQ probes. This means you have all measuring tasks on air conditioning and ventilation systems reliably under control.

You can connect the testo 440 to a large selection of digital probes, the testo Smart Probes, or even numerous Testo temperature probes, allowing for numerous configurations to meet your needs. The clearly structured menus for measuring volume flow in ducts and at outlets, cooling/heating load, K-factor, turbulence, mold indication and even a data logging mode are stored on the instrument for additional convenience. These menus enable you to accomplish the relevant measuring task more quickly, more efficiently and more reliably than ever before. Reports can also be exported as excel files via the USB interface or printed out directly on site.

The testo 440 air velocity & IAQ meter is available in two versions. The standard testo 440 and the testo 440 dP model version, which includes an integrated differential pressure sensor. This makes measurements at filters as well as Pitot tube and K-factor measurements possible.