The VOC module is a continuous sensor-based analyzer used to to detect volatile organic
compounds in ambient air. The module is designed for use in the AQM 65 compact air
monitoring station and the AQS 1 mini air quality station. The VOC analyzer module
incorporates photo-ionization detector (PID) sensor technology. A long-life 10.6 eV deep
UV lamp breaks VOCs down into positive and negative ions. The detector measures the
current of the ionized gas and current is proportional to detectable
In the AQM 65’s super stable environment humidity effects are greatly minimized.
The VOC module is sensitive to a wide range of VOCs, including benzene and toluene,
though not propane, formaldehyde or low molecular weight alcohols.
Just like a traditional analyzer using gas chromatography, this sensor-based VOC module
can be field calibrated using standard calibration equipment and gases. This ensures direct
traceability to USEPA (40 CFR Part 53) and EU (2008/50/EC) certified equivalent method
instruments. In contrast to traditional analyzers using gas chromatography the VOC module is
compact, lightweight and costs 5 x less to own and operate.