VOC Analyzer Module (Low Range) 0-500 PPB

VOC Analyzer Module (Low Range) 0-500 PPB

The VOC analyzer module is a continuous sensor-based analyzer used 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 the 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

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

Sensor specifications

Sensor Code

AQM VOC / AQS VOC

Range

0-500 ppb

Sensor Type

PID

Noise/ppm

1 ppb, 1%

Lower detectable limit/ppm

1 ppb

Precision

< 2% of reading or 1 ppm