Palas AQ Guard

The AQ Guard is an air quality analyzer for indoor air monitoring, fine dust (particle size from 0.175 µm), PM 2.5, temperature, humidity, pressure, PM 1, PM 4, PM 10, CO2 measurement, TVOC, calculation of air quality index and contamination risk index (with the package Indoor Air Hygiene Professional=I.A.H.P.).


The AQ Guard, currently the most advanced compact indoor air quality analyzer, continuously and reliably analyzes suspended fine dust particles in the 0.175 – 20 µm range (with the IAHP package, starts at 0.15 µm). A newly developed mass conversion algorithm calculates PM values based on single-particle optical light scattering, considering the duration and shape of the signal.

AQ Guard simultaneously calculates and stores PM1, PM2.5, PM4 and PM10, total dust load, CN particle number concentration and particle size distribution. Thus, it provides comprehensive, accurate information about indoor particles. This is only possible in this form with a single particle counting method.

The technology it uses is based on the approved Fidas® 200 series (EN16450 and MCERTS), for simultaneous measurement of CN, PM1, PM2.5, PM4, PM10.

The purpose-built MyAtmosphere cloud application allows both private and public bodies to directly retrieve current measurement values, compare them with other devices without delay and further processing, or integrate them into their own systems via an optional interface programming language (API ). Common protocols such as ASCII, MODBUS over TCP or UDP are also integrated.


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