CONTINUOUS OPERATION
The timebase for sampling and analysis is adjustable from 20 minutes to 24 hours.

NO GAS, NO GLASS
Ambient air is used as the analytical carrier gas at a very low flow rate.  This eliminates the need for specialized gas supplies.

The analytical chambers are made of stainless steel: the instrument contains no fragile glass components.

OC/EC DETERMINATION
The Total Carbon Analyzer provides the result for TC.

Since {TC = OC + EC}, it follows that {OC = TC – EC}.

The Total Carbon Analyzer may be connected to a Model AE33 Aethalometer, which provides real-time data for BC, closely related to ‘EC’.  The Aethalometer data is automatically combined with the TCA data to provide a full characterization of the carbonaceous component of the aerosol in near-real-time:  TC, OC, BC (or ‘EC’).

CONTINUOUS OPERATION
One channel collects the sample, while the second parallel channel is being analyzed.  Ball valves automatically switch between the two, every timebase period, to provide continuous operation.

QUICK INSTALLATION, AUTOMATIC OPERATION
The instrument can be installed quickly with no specialized resources required.  It operates automatically and recovers from power interruptions.

Carbonaceous matter {TC = OC + EC} is often the largest contributor to PM2.5 mass.  The Total Carbon Analyzer provides the result for TC.

Since {TC = OC + EC}, it follows that {OC = TC – EC}.

The Magee Scientific Total Carbon Analyzer may be connected to a Model AE33 Aethalometer, which provides real-time data for BC, closely related to ‘EC’.  The Aethalometer data is automatically combined with the TCA data to provide a full characterization of the carbonaceous component of the aerosol in near-real-time:  TC, OC, BC (or ‘EC’).

This is accomplished in a rugged, reliable instrument package that is suitable for laboratory, fieldwork, and routine Air Quality monitoring applications.

The Magee Scientific Total Carbon Analyzer Model TCA08 is constructed in a rugged instrument package suitable for laboratory, field-work and routine Air Quality monitoring applications.

• The Magee Scientific Total Carbon Analyzer collects a sample of atmospheric aerosols on a quartz fiber filter enclosed in a small stainless-steel chamber, at a controlled sampling flow rate of 16.7 LPM. The default sampling time is 60 minutes, but may be set from 20 minutes to 24 hours depending on the ambient aerosol concentrations.
• The instrument has two identical parallel channels, with the air flows being controlled by ball valves and solenoids. While one channel is collecting its sample, the other channel is analyzing the sample collected during the previous period.  At the end of the period, the valves switch over to provide continuous operation and continuous data.
• After collection on the filter, two flash-heating elements combust the sample instantaneously in a small ‘analytic’ flow of filtered ambient air. This converts all the carbonaceous compounds into CO2, and creates a short but large-amplitude pulse of CO2 in the analytic flow passed to the NDIR CO2 detector. The background level of CO2 in ambient air during the heating cycle is determined before and after the heating cycle, the provide the baselines against which the combustion pulse is measured. The CO2 concentration over the baseline is integrated to give the Total Carbon content of the sample.
• The chamber and combustion elements are cooled after analysis. At the end of the timebase period the flow system of ball valves and solenoids switches over.  The first channel collects the next period’s sample, while the second channel is analyzing the previously collected sample.