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CO2, CO, light, sound, and rpm

Regular measurement of indoor air quality and comfort levels in workplaces enables the exact setting of the indoor climate and reduces the risk of staff shortages due to illness. Indoor air quality and comfort level measurement therefore also leads to fostering better staff performance.

  • The CO₂ content of the area is used as a measure of the air quality.

  • The indoor climate is also determined by the prevailing light conditions in the area. Monitoring these light conditions and measuring the lux level are therefore an important part of comfort level measurement in the workplace.

  • Almost everybody has come across this: background noises which easily prevent you from working and from concentrating on something. If the noise level is high at work, staff efficiency is reduced - no matter whether the noise pollution is caused by equipment or colleagues.

  • Applications for speed meters are multi-faceted. In addition to rpm measurement of rotating objects, the speed or length of conveyor belts and goods sold by the metre can also be measured using contact measurement via a measuring wheel. There is also the possibility of determining the rpm of rotating objects without contact using a reflection mark and a light beam emitted by the instrument.

Multifunctional measuring instruments: Online product advisor

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Measurement of indoor air quality and comfort levels in workplaces

Practical guide

Indoor air quality and comfort level in the workplace

Download the exclusive practical guide for free now.

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What does indoor air quality mean?

Monitoring indoor air quality in practice

What is thermal comfort level?

Reasons for using measuring technology

Actions taken by a measuring technology technician in the event of a complaint

And much more ...

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CO2 meter

Our CO₂ measuring instruments and probes reliably measure the carbon dioxide concentration, which means they are ideal for monitoring the indoor air quality.


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CO meters

Testo's CO measuring instruments and probes are ideally equipped for the detection of carbon monoxide in indoor areas.


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Testo offers lux measuring instruments which can be used to measure the luminous intensity of natural or artificial light.


testo 816-1

Sound level meters

Our portable sound level meters are ideally suited for volume measurement.


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A large selection of rev counters & strobes.


testo 400

air velocity & IAQ measuring instrument

For all air conditioning and ventilation measurements.

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The testo Smart App guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems.

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Direct report dispatch by e-mail


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PRO measuring programs