The testo 440 combines a compact handheld measuring instrument with userfriendly measurement menus and wireless probes for versatile and convenient measurement of air conditioning and ventilation parameters. The new air velocity and IAQ measuring instrument testo 440 combines intuitive operation, precise measurement values, an extensive probe range and wireless convenience. The measurement of air velocity and IAQ parameters often takes place according to standardized procedures and norms. In order to simplify work for the user, clearly structured menus for the following measurements are pre-set in the testo 440: volume flow measurement in ducts and at outlets, k-factor, degree of turbulence according to EN ISO 7730/ ASHREA 55, cooling/heating load, mould indication and long-term measurement (recording of measurement values at set intervals).

The testo 440 probes are available for air velocity, temperature, humidity, degree of turbulence, CO2, CO and light intensity. Customers have the choice between wireless and fixed-cable models. The wireless Bluetooth® probes ensure more freedom of movement in measurement and save space in the measurement case. In addition to this, a probe handle can be universally combined with all corresponding probes and probe attachments. The large display of the testo 440 shows up to 3 measurement values
simultaneously. It also allows easy configuration of the measurements as well as a view of results at a glance. The instrument’s memory can record up to 7500  easurement protocols. The testo 440 multi-function measuring instrument is available in two versions. Model testo 440 dP is technically identical to the regular version; however it has an additional, integrated differential pressure sensor. This makes measurements at filters as well as Pitot tube and k-factor measurements possible. Pre-configured kits consisting of measuring instruments, probes and accessories are available for the most important areas of application including ducts, vents, indoor air quality and ventilation/air conditioning measurements in laboratories.

For more information, visit www.testo.com