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Introduction
Our photoacoustic system is ideal in applications where a well defined pollutant has to be measured with high selectivity, sensitivity and fast response time. The table below is a partial list of those components measurable with our photoacoustic systems, together with the corresponding minimum detectable concentrations.
| Gas component |
Carrier gas |
Minimum detectable concentration (ppm) |
| H2O |
natural gas |
0.2 |
| H2O |
ambient air |
0.2 |
| NH3 |
ambient air |
0.05 |
| H2S |
natural gas |
1 |
| CH4 |
biogas |
0.5 |
| O3 |
ambient air |
0.003 |
| CO2 |
biogas |
10 |
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Our multi-wavelength photo- acoustic aerosol system was successfully tested in a measurement campaign at the Research Center Karlsruhe (18-28 April 2006).
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