Intuitive climate measurement
The testo 440 combines versatility with maximum ease of use.
Versatility in a compact design
Welcome to a new era: the testo 440 combines a compact hand-held measuring instrument with intuitive measurement menus and a comprehensive selection of air velocity & IAQ probes. Use it to keep all your air conditioning and ventilation measurements in one device.
Intuitive measurement menus
Clearly structured menus for volume flow, K factor, degree of turbulence, heating/cooling output, mold detection and long-term measurement are programmed into the instrument.Wireless convenience
All the testo 440 probes are also available as wireless Bluetooth versions. This makes for less cable clutter.Clear display
Measurement configuration and display of values at a glance.Particularly economical
The testo 440 saves you money:
the meter does not need to be calibrated, it measures all air velocity & IAQ parameters and the probes can be easily adapted for different measurements.
Multifunction measuring instruments: online product configurator
To the product consultant
The measuring instrument for any air conditioning application:
Flow measurement in ducts and at outlets
Intuitive menus – clearly structured for volume flow, K factor, and pitot tube measurements
Convenient measurement – extendable probes with Bluetooth
With a differential pressure sensor: the testo 440 dP for Pitot tube and filter measurements
Measuring comfort level and indoor air quality
Intuitive menus: turbulence measurement in accordance with ISO EN 7730/ASHRAE 55
Integrated long-term measurement: monitor specified locations at adjustable measuring intervals
A comprehensive selection of probes: turbulence, CO2, temperature, humidity, CO, lux
Measurements in laboratories and cleanrooms
Intuitive menus – clearly structured for volume flow measurement
Special applications – high-precision probes with an unrivaled level of accuracy
Versatility – Bluetooth or cable, the right probes for any measuring location
4 reasons why the testo 440 will make your work even easier
Clearly structured menus, large display
Menus for measuring volume flow, K factor, and degree of turbulence in accordance with EN ISO 7730 / ASHRAE 55, heating/cooling output, mold detection, and long-term measurement are programmed into the instrument, and guarantee reliable measurement results.
Measurements are easily configured via the large display; readings and results are available at a glance.
What do you need to measure?
Free downloads to help you measure more effectively:
Measurement menus
The intuitive measurement menus
The menus programmed in the instrument efficiently guide you through volume flow measurements in ducts and at outlets, and with K factor and pitot tube measurements.
Probe comparison
All probes for the testo 440
Which probe for which application? Download the probe comparison and learn about the testo 440 portfolio of probes.
Laboratories/Cleanrooms
The comprehensive testo 440 brochure
A wealth of information relating to the testo 440:
All probes and accessories
Special kits for any application
Details on instrument navigation