AQ Guard Smart 2000

AQ Guard Smart 2000

Air quality analyzer for monitoring nanoparticles (UFP number concentration, LDSA-“Lung-deposited surface area”) for demanding environmental conditions


The AQ Guard Smart 2000 is a measuring device designed to measure particle concentrations in the ultrafine range, which typically cannot be detected by optical aerosol photometers or spectrometers due to their small size, but which have a significant impact on health according to the WHO.

Currently, no legal regulations or limits have been established for ultra-fine particle concentrations and masses. Mass limits like PM2.5 and PM10 can be measured well with gravimetric methods, at the latest for smaller PM1 fractions of ultrafine fractions are difficult to estimate and can be evaluated meaningfully only by the determination of the particle concentration.

In this case, valuable and maintenance-intensive condensation particle counters are usually used, which in combination with a size-classifying system (Scanning Mobility Particle Sizer) provide information about the particle size distribution and concentration.

Operating principle

AQ Guard Smart 2000 for ultrafine particles closes the gap between classical condensation particle counters and optical systems. Long-term measurements for the evaluation of number concentrations in indoor and outdoor areas, e.g. at highly polluted places like airports, main roads, forwarding agencies or also e.g. toll stations are easily and reliably possible and can already be used for the definition of avoidance and reduction measures in a meaningful and targeted way.

The cloud application MyAtmosphere created for this purpose enables both private and governmental operators to retrieve current measured values directly, to compare them with other devices without delay and further processing or to integrate them into their own systems/environments via an optional programming interface (API).


AQ Guard Smart 2000 has an optional mast or tripod mount and can be expanded to include a weather station, sunshade, and LoRa modem if needed.


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