VOC Analyzer Module 0-500ppb
|Sensor Code||AQM VOC L / AQS VOC L|
|Noise (Zero; Span % of reading)||1 ppb, 1%|
|Lower detectable limit||1 ppb|
|Precision||2 % of reading or 1 ppb|
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-ionisation 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 ionised gas and current is proportional to detectable VOCs. 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.
Typical applications include:
- urban and national ambient air quality monitoring
- roadside and near roadside monitoring
- power station perimeter monitoring
- solvent and chemical manufacturing
- oil and gas perimeter monitoring
- checking pollution ‘hotspots’
- air quality research