Air velocity measurement in ducts and at outlets

Air-conditioning and ventilation systems only truly function efficiently
when air or volume flows in ducts and at outlets meet the specifications.
With the versatile testo 440 kits, you can now take care of both measuring
tasks more conveniently.

  • Intuitive measurement menus
    Clearly structured menus for volume flow in ducts and at outlets,
    K factor and Pitot tube measurement are programmed into the
    measuring instrument.
  • Convenient measurement
    Telescopes with easy-to-read scaling make it really convenient
    to work in ducts. They can also optionally be extended up to 2 m.
  • Versatile accessories
    Use the telescope to reach ceiling outlets with ease. The funnels
    are perfect for plate outlets.Use the air flow straightener to measure
    turbulent flows with precision.
  • Intelligent calibration concept
    Only the probe heads need to be calibrated. You can carry on working
    with the measuring instrument, handle and another probe

Would you welcome some advice?

In the online configurator, you can easily put together your own personal combination of measuring instrument, probes and accessories.

How to contact us.

Do you have any questions?
We're happy to help you.

Phone: +91 20 2592 0000
E-Mail: info@testo.in


Stay in control of any air velocity measurement

  • Measurements in ducts: precision in any cross-section
  • Measurements at outlets: achieve the ideal climate in next to no time
  • Measurement of turbulent air flows: no task is too challenging
     

Kits for carrying out measurements in ducts and at outlets

testo 440 Air Flow
ComboKit 1 with Bluetooth

testo 440 Air Flow ComboKit 1 with Bluetooth
To the kit
  • testo 440 air velocity & IAQ measuring instrument
  • 100 mm vane probe with Bluetooth, including temperature sensor
  • Hot wire probe with telescope including temperature sensor, wired 
  • Menu for volume flow, etc.
  • Combi-case for testo 440 and multiple probes

testo 440 Air Flow
ComboKit 2 with Bluetooth

testo 440 Air Flow ComboKit 2 with Bluetooth
To the kit
  • testo 440 air velocity & IAQ measuring instrument
  • 100 mm vane probe with Bluetooth, including temperature sensor
  • 16 mm vane probe with telescope, wired 
  • Menu for volume flow, etc.
  • Combi-case for testo 440 and multiple probes

testo 440 delta P Air Flow
ComboKit 1 with Bluetooth

testo 440 delta P Air Flow ComboKit 1 with Bluetooth
To the kit
  • testo 440 dP air velocity & IAQ measuring instrument including differential pressure
  • Universal probe handle with Bluetooth
  • Hot wire probe head incl. temperature and humidity sensor
  • 100 mm vane probe head including temperature sensor
  • Telescope and 90° angle compatible with both probes
  • Combi-case for testo 440 dP and multiple probes

 

testo 440 delta P Air Flow
ComboKit 2 with Bluetooth

testo 440 delta P Air Flow ComboKit 2 with Bluetooth
To the kit
  • testo 440 dP air velocity & IAQ measuring instrument including differential pressure
  • Universal probe handle with Bluetooth
  • 16 mm vane probe head
  • 100 mm vane probe head including temperature sensor
  • Humidity probe head including temperature sensor
  • Telescope and 90° angle for both probes
  • Combi-case for testo 440 dP and multiple probes

Other kits and versatile accessories for air velocity measurements

testo 440 Hot Wire Kit

testo 440 Hot Wire Kit
To the kit
  • testo 440 air velocity & IAQ measuring instrument
  • Hot wire probe including temperature sensor, wired and with telescope
  • Menu for volume flow, etc. along with timed and multi-point mean calculation
  • Basic case for testo 440 and 1 probe

testo 440 16 mm Vane Kit

testo 16 mm Vane Kit
To the kit
  • testo 440 air velocity & IAQ measuring instrument
  • Vane probe, wired and with telescope
  • Measurement menu for volume flow, etc. along with timed and multi-point mean calculation
  • Basic case for testo 440 and 1 probe
     

testo 440 100 mm Vane Kit
with Bluetooth

testo 440 100 mm Vane Kit with Bluetooth
To the kit
  • testo 440 air velocity & IAQ measuring instrument
  • 100 mm vane probe with Bluetooth, including temperature sensor
  • Measurement menu for volume flow, etc.
  • Basic case for testo 440 and 1 probe
     

Accessories for outlet measurements

Telescopes, funnels and flow straighteners from Testo

 

Convenient at outlets:

Reliable at plate outlets:

Accurate in turbulent air flows:

The intuitive measurement menus

The menus programmed into the instrument guide you efficiently through volume flow measurements in ducts and at outlets, K factor and Pitot tube measurements.

Flexible: modular probes for every application

A handle can be universally combined with all probe heads and attachments in the testo 440 probe system. So it only takes you seconds to switch from measuring the indoor air quality to determining the volume flow.

All probes for the testo 440

Which probe for which application? Download probe comparison now and find out all about the testo 440 portfolio of probes.

Tips & tricks for carrying out air flow measurements in ducts

For example, find out more about:

  • The most important probes for every application
  • Carrying out acceptance test measurements correctly in accordance with DIN EN 12599
  • Identifying and preventing measurement errors