Air quality parameter monitoring

Campbell Scientific systems for unattended, long-term monitoring of air quality parameters provide unmatched reliability and versatility, adding in required meteorological measurements

Campbell Scientific systems for unattended, long-term monitoring of air quality parameters provide unmatched reliability and versatility.

These systems measure ambient gas and particulate concentrations, stack emissions, and visibility.

Meteorological parameters can also be monitored for use in determining air stability or for use in air quality and dispersion modeling.

Campbell Scientific equipment is in use at smelters, refineries, tailings, mines, landfills, construction sites, manufacturing and processing plants, and industrial and hazardous waste sites.

Systems can be customised using a wide selection of dataloggers, sensors, analysers, and communications devices.

Almost any meteorological sensor can be measured by our dataloggers, allowing stations to be customised for each site.

Typical sensors used on our stations include, but are not limited to: wind speed and direction, solar radiation, delta temperature (SRDT), temperature (air, water, soil), relative humidity, precipitation, and barometric pressure.

In some locations, hydrological sensors provide additional measurements, such as water quality of a nearby stream.

A wide range of gas analysers can be used with these systems.

Many gas analysers output a user selectable 1, 5, or 10 Vdc signal proportional to the concentration of the gas being measured.

The datalogger measures the voltage directly and then scales the voltage into the appropriate concentrations, in ppm or ppb.

Control ports on the datalogger are programmed to open and close solenoids to complete the daily self-calibration.

Commerically available gas analysers measure concentrations of SO2, H2S, O3, NOX NO, NO2, CO, CO2, CH4, and THC (total hydrocarbon).

The beta-gauge type of particle sampler (PM10 or PM2.5) typically has a voltage output that our dataloggers can measure directly.

Our dataloggers can also measure most flow sensors and opacity meters.

On-board processing instructions use concentration and flow data to compute stack emissions.

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