testo 440 Air Velocity and IAQ Measuring Instrument

Use the testo 440 air velocity and IAQ measuring instrument in combination with high quality probes to measure and store all air velocity and IAQ parameters. Up to 3 probes can be connected simultaneously – a Bluetooth probe, a wired probe, and a temperature probe with a type K thermocouple connector (probes sold separately). Automatic probe detection and clearly structured measurement menus guarantee simple operation and will make your day-to-day work easier.

Carry out your measurements quickly and easily. This multifunction instrument automatically detects each connected probe, which means you won't need to manually reset measurement parameters when changing probes. Clearly structured measurement menus for measuring the volume flow in ducts and at outlets, funnel measurement, measuring the degree of turbulence, determining heating/cooling output, mold detection, and long-term measurement provide you with the optimal support for quick and efficient work.

Endlessly versatile – the universal probe handle can be connected to all probe heads, so you can measure everything you need, while saving money and space.

The Bluetooth probe handle makes it more convenient to carry out your measurements, and guarantees less cable clutter in your case. It makes it possible to carry out measurements without any bothersome cable connections, and it transfers readings up to a distance of 65 feet. If using a wireless connection is not possible, use the cable probe handle as a practical alternative.

Long-term monitoring of indoor air quality

• The right probe for your requirements: Probes for CO₂, CO, and air temperature and humidity are available as wired or Bluetooth variants
• Easy to use: Enter the measurement period and interval for long-term measurement, and track it over the course of the day
• Internal memory for up to 7,500 measurement protocols

Turbulence measurement in accordance with EN ISO 7730 / ASHRAE 55

• Attain a high level of accuracy, even at low air velocities, with a turbulence probe
• Automatic calculation of draft risk and degree of turbulence in accordance with EN ISO 7730 / ASHRAE 55
• For convenient measurements at varying heights, we recommend using our measuring tripod for comfort level measurement – this makes it easy to position turbulence probes in compliance with testing standards

Wide range of probes for laboratories and cleanrooms

• Fume hood probe for high precision air velocity measurements
• Thanks to its low startup speed of 0.1 m/s, the available vane probe (Ø 4") is ideal for laminar flow measurements in cleanrooms, available as a wired or Bluetooth variant
• High precision temperature / humidity probe (0636 9771 or 0636 9772) with an accuracy of ±0.6% RH + 0.7% of m.v. in the 0-90% RH range for measuring the humidity in cleanrooms