Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
200PPM SO2 AND NO GAS SPECTRAL DATA
| 271.98nm | 225.94nm | dark noise | |
|---|---|---|---|
| zero gas | 56434 | 43973 | 2900 |
| SO2 100ppm | 52851 | 42754 | 2900 |
| zero gas | 56434 | 43973 | 2900 |
| NO2 100ppm | 56386 | 40749 | 2900 |
SPECTRAL DATA FOR MIXED GAS
| 271.98nm | 225.94nm | dark noise | |
|---|---|---|---|
| zero gas | 56434 | 43973 | 2900 |
| mixed gas | 52050 | 39588 | 2900 |
ANALYSIS OF RESULTS
| gas species | standard value (ppm) | measured value (ppm) | difference value | maximum difference | error |
|---|---|---|---|---|---|
| SO2 | 102 | 104 | 2 | -4 | 0.8% |
| 200 | 196 | -4 | |||
| 499 | 501 | 2 | |||
| NO | 104 | 108 | 4 | -7 | 1.4% |
| 200 | 206 | 6 | |||
| 500 | 493 | -7 | |||
| NO2 | 116 | 112 | -4 | -9.7 | 1.94% |
| 201.5 | 195 | -6.5 | |||
| 501.7 | 493 | -9.7 | |||
| NH3 | 50 | 53 | 3 | 3 | 1.5% |
| 200 | 199 | -1 | |||
| conclusion | Accuracy error is less than 3%, which meets the design standard. | ||||
SPECTRAL TABLES FOR SO2 AND NO2 AT WAVELENGTH 273_33NM AND WAVELENGTH 231_33NM
| Wavelength | 231.33 | 273.33 |
| NO2 absorbance | 0.03003444 | 0.00456189 |
| SO2 absorbance | 0.00482312 | 0.07984884 |