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, 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 your measuring tasks 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.
• Measure CO2 concentration, humidity, and air temperature, and calculate dew point, wet bulb temperature, and absolute humidity
• Measuring range: 0 to 10,000 ppm, 14 to 122 °F, and 5 to 95% RH
• Determine the degree of turbulence and draft risk according to EN ISO 7730 / ASHRAE 55
• Accurate measurements from 0 to 984.3 fpm within the temperature range 0 to 122 °F
• Accurate measurement results, thanks to air density compensation via integrated absolute pressure measurement
• The Bluetooth handle makes it more convenient to carry out your measurements and guarantees less cable clutter in your case – it transmits readings to the testo 440, from up to 65 feet away
• Conveniently placed handle button stores individual readings for multi-point mean calculations, or to start and stop measurement series for mean calculations over time
• Carry out measurements at air/ceiling outlets effortlessly, without using a ladder – fit the vane probe with the extendable telescope and 90° angle (both sold separately)
• Use the vane probes in conjunction with the testovent measurement funnels and flow straighteners to test incoming / outgoing air at plate outlets, ventilation grills, and swirl outlets
• Intelligent calibration concept – the testo 440 remains in continuous use and only the individual probes need calibration

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