Figures & data
Figure 1. Experimental setup with Unisearch Optics mounted, instrument tested, and sample cell with base path of 1.0 m, radiative heater, and white insulation.
Table 1. Results of Unisearch S Series LasIR SM410 for 1.0-m sampling system at 25ºC, 100ºC, and 200ºC, where the uncertainties represent one standard deviation of the measurement average
Figure 2. Graphical representations of system response over the concentration range at 100°C and 200°C.
Figure 3. Graphical representation of the percent difference over the three groupings at each of the sampling levels, Group 1: 100 °C, Group 2: 200 °C, Group 3: 200 °C interference tests.
Table 2. Average percent difference of the measured results obtained with respect to the standard gas values obtained with the following grouping: Group 1: 100ºC, Group 2: 200ºC, Group 3: 200ºC interference testing
Figure 4. Typical gaseous infrared spectra of major flue gas species observed from coal-fired combustion processes.
Figure 5. Graphical representation of system response over the concentration range at 0% moisture at 200°C during the interference tests.
Table 3. Interfering gas test results of Unisearch S Series LasIR SM410 for 1.0-m sampling for NO, CO, CO2, SO2, and NH3 at 0% moisture and 200ºC, with the uncertainties representing one standard deviation of the measurement average
Figure 6. Linear regression of the measured response from the Unisearch S Series LasIR SM410 as compared to the source calibration value. The measured responses are averaged from all 10 tests at each source calibration value that encompassed the range of moistures and temperatures used in this evaluation.
Table 4. Average precision is reported for each of the ppmv-m source calibration values