Precise measurement at outlets with Testo measuring instruments

Testo measurement technology provides reliable results even at swirl outlets.

The quality of the indoor air depends crucially on whether the air input or output volume flows are optimally adjusted. For this reason, the measurement is taken directly at the outlet during adjustment work. However, inaccessible ventilation ducts also make measurements at outlets necessary.

At swirl and plate outlets or ventilation grilles however, turbulence is created, which can falsify the measurement results.

In order to be able to measure these non-uniform flow profiles, it is essential that a funnel measuring instrument with a flow straightener is used. Patented volume flow straighteners from Testo guarantee the greatest level of accuracy, even in strong air turbulence.

Highest accuracy even in turbulence

Volume flow measurement hood testo 420 (40 to 4000 m 3 /h)

Measures air input and output. Ideally suitable for outlets from 360 mm in non-residential buildings. Easy documentation and convenient working with the testo 420 App. Can be combined with exchangea - ble hoods in different sizes: 360 x 360 mm / 915 x 915 / 1220 x 305 mm / 1220 x 610 mm.

Vaneanemometer testo 417 set 2 (0 to 440 m 3 /h)

With 2 measurement funnels (Ø 200 mm for plate outlets and 330 x 330 mm for ventilation grilles) and volume flow straight- ener. Measures air input and out- put in residential buildings. Ideal for outlets up to 330 mm. With flow straightener measurement up to 200 m 3 /h.

Vaneanemometer testo 417 (0.3 to 20 m/s)

Faster measurements with 100 mm vane. Easy mean value function.

Vaneanemometer testo 410i (0.4 to 30 m/s)

Operated by your smartphone. Documentation easily created and reports sent via testo Smart Probes App.

Vaneanemometer testo 410-2 (0.4 to 20 m/s)

With 40 mm vane and integrated humidity measurement.

Volumeflow funnel testovent 410

For convenient measurement on extractor systems in combination with thermal probes.

For more details please visit our website www.testo.com/en-IN or contact us on bellow address:

Testo India Pvt. Ltd.
Plot No. 23, Sind Society, Baner Road, Aundh, Pune – 411007 Maharashtra, India
Phone: +91 20 6560 0203
E-Mail: info@testoindia.com
Fax: +91 20 2585 0080

Accurate and convenient measurement in ducts with Testo measuring instruments

The easy way to optimum measurement results in all flow velocity ranges.

In order for air conditioning and ventilation systems to run smoothly and efficiently, the flow velocity in the ventilation duct must be regularly checked. Only when the flows in the duct correspond to the requirement are the room loads (heat, cold and substance load) reliably transported away – and the indoor air quality is right.

If the ventilation duct is accessible, duct measurement is then the best solution. This is because air flows are measured most accurately directly in the duct. However, it must be taken into account that the flows in the duct are usually non-homogenous and turbulent.

In order to obtain reliable results in spite of this, measurements should always be taken at several points over the duct cross-section. In these grid measurements, the mean flow velocity is calculated from the individual measurement values.

Ventilation measuring instruments from Testo support you in grid measurement just as reliably as in the automatic calculation of volume flow.

Which instrument suits your application depends on the flow velocity range you wish to measure.

Lower flow velocity range up to 5 m/s

Thermalanemometer testo 425 (0 to 20 m/s)

Our accuracy champion in the flow velocity range from 1 to 5 m/s. With fixed telescopic flow velocity probe up to 820 mm length for duct measurement.

Thermalanemometer testo 405i (0 to 30 m/s)

Work comfortably thanks to operation completely via testo Smart Probes App. Easy report creation and data dispatch by e-mail.

Thermalanemometer testo 405 (0 to 10 m/s)

Particularly accurate in the range between 0 and 2 m/s Equipped with 300 mm telescopic probe. Automatically calculates the volume flow.

Medium flow velocity range from 5 m/s

Vaneanemometer testo 416 (0.6 to 40 m/s)

Our accuracy champion in the flow velocity range from 5 m/s. Telescope length up to 890.

Differentialpressure measuring instrument testo 420 (-120 to +120 Pa)

Measures flow velocities up to 14 m/s in combination with a Pitot tube or a flow velocity matrix.

Medium to high flow velocity range from 40 to 100 m/s, as well as highly contaminated flows

Differential pressuremeasuring instrument testo 510 (-100 to +100 hPa)

Compact and with integrated display.

Differentialpressure measuring instrument testo 510i (-150 to +150 hPa)

Controlled by your smartphone. Reports easily created and sent via testo Smart Probes App.

For more details please visit our website www.testo.com/en-IN or contact us on bellow address:

Testo India Pvt. Ltd.
Plot No. 23, Sind Society, Baner Road, Aundh, Pune – 411007 Maharashtra, India
Phone: +91 20 6560 0203
E-Mail: info@testoindia.com
Fax: +91 20 2585 0080