Multifunctional Measurement in Ducts and At Outlets with Testo Measuring Instruments

Record multiple VAC parameters – not just flow velocity. 

With our multi function measuring instruments, you measure with the highest level of flexibility on air conditioning and ventilation systems. Because at Testo, you find the right probe for every measurement task. Use the maximum freedom of combination, and connect widely differing probes to your testo 480 or testo 435: e.g. thermal anemometers, vane anemometers or Pitot tubes. In addition to flow velocity, volume flow, temperature and humidity, with our multifunction instruments you can measure absolute and differential pressure, light intensity, radiated heat, degree of turbulence and CO2 concentration with a single instrument.

The multi-function VACmeasuring instrument testo 435-4

The testo 435-4 works efficiently and reliably, without needing any complicated prior programming:

• Fast duct measurement with at the touch of only one button

• Integrated differential pressure measurement for monitoring filters or for flow velocity measurement with a Pitot tube

• Flexibility thanks to wireless probes for temperature and humidity

• Includes PC software for analyzing and documenting the readings

Combine the testo 435-4 with these probes:

Vaneprobe Ø 16 mm (0635 9535) (0.6 to 40 m/s)

With 890 mm telescope, also suitable for measurements on larger ventilation ducts. Automatic calculation of volume flow.

Hot wire probe Ø 12 mm(0635 1535) (0 to 20 m/s)

Measures flow velocity, temperature and humidity in ducts and at outlets. With 745 mm telescope.

Vane/temperature probe, Ø 100 mm (0635 9435) (0.3 to 20 m/s)

Ideal for the determination of volume flow and flow velocities at outlets. For measurement at plate outlets and ventilation grilles, we recommend the funnel set testovent 417. 

Funnelset testovent 417 (0563 4170)

In combination with the vane probes 0635 9435 and 0635 9542, it allows accurate and convenient measurement at ventilation grilles and plate outlets.

The multi-function VAC measuring instrument testo 480

The testo 480 supports you in your work and in guaranteeing optimum indoor air quality, thanks to integrated guided measurement programs and practical additional functions:

• Stored programs for the measurement of volume flow, degree of turbulence and comfort (PMV/PPD)

• Norm-compliant adjustment of VAC systems thanks to automatic error calculation according to EN 12599

• Convenient duct measurement: Immersion depth of the probe is automatically calculated and displayed.

• Reliable work thanks to easily visible length markings on the telescope

• Quick storage of the measurement values with the "Save" button built into the probe

Combine the testo 480 with these probes:

Vane probe Ø 16 mm(0635 9542) (0.6 to 50 m/s)

Ideal for the measurement of medium flow velocities in ducts. Also records volume flow and temperatures up to +70 °C. Comfortable working even at larger ducts thanks to 960 mm telescope.

Bendable hot wire probe (0635 1543) (0 to 20 m/s)

4 functions in one probe: Measures flow velocity, temperature, humidity and absolute pressure in ducts and at outlets with laminar flow. With a stable telescope up to 1100 mm for working on walls and ceilings.

Vane/temperature probeØ 100 mm (0635 9343) (0.3 to 20 m/s)

Measures flow velocity, volume flow and temperatures up to +60 °C at outlets. With testovent 417, also suitable for measurements at plate outlets.

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

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

All flow velocities under control with Testo measuring instruments

 Ventilation and air conditioning measuring instruments from Testo. All outlets, All flow velocities - One expert.

Test air conditioning and ventilation systems – in ducts, at outlets, and with multifunction instruments.

The correct and efficient adjustment of ventilation and air conditioning systems makes very high demands of measurement technology, due to the various measurement locations and the differing flow velocities. 

Whether the precise determination of volume flow, quick spot measurements in ducts or the recording of turbulent flows at outlets: without suitable measuring instruments, it is impossible to ensure optimum indoor air in residential and non-residential buildings.

The most accurate measurement results can be achieved by measuring directly in a duct. However, since ventilation ducts are in practice frequently hidden or inaccessible, it is often necessary to resort to outlet measurements. In addition to this, turbulence in ducts and at outlets can often falsify measurements. 

As you can see, carrying out precise flow velocity measurements is not easy. For this reason, Testo offers the optimum solution for every measurement task and measurement range: thermal probes, vane anemometers, differential pressure measuring instruments, funnel measuring instruments and multifunction measuring instruments. With the patented flow straighteners from Testo, even turbulent flows can be measured accurately. Here you can find information on how to measure flow velocity more efficiently. 

Innovative App solutions

Writing mails, checking the weather, planning routes: Many things are easier with a smartphone. With our free Apps for the volume flow measurement hood testo 420, and the Testo Smart Probes, ventilation measurement is now also more convenient and less stressful.

• Measurement site-independent operation: Your smartphone becomes the remote control • Convenient measurement value display: Readings are always available when you need them • Clever documentation: Create protocols and reports easily, and send them immediately by e-mail

Patented flow straightener technology

The correct recording of volume flow at ventilation and swirl outlets is often hampered by turbulence. In order for you to be able to obtain precise results even in turbulent flows, Testo has developed patented flow straighteners for testo 417 and testo 420. The flow straighteners convert turbulent air into an almost uniform flow, which can then be reliably recorded with the measuring instrument. This reduces measurement inaccuracies at swirl outlets and in turbulent air by up to 50 %. 

Fast worldwide calibration service

For us, measurement precision does not stop at the delivery of the instruments. Regular calibration is indispensable for constant, reliable results. This is why our subsidiary, Testo Industrial Services (TIS) has a worldwide network of their own calibration laboratories. This allows you quick access to our accredited calibration services – so you can continue to work efficiently.

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