SO2 Analyzer
Technical principle
The optical system of SO2 analyzer is mainly composed of light source, gas chamber, PMT, reference detector and so on. The ultraviolet light source emits 214nm light which passes through the gas cell and arouses SO2 molecule to produce 330nm fluorescence. The intensity of fluorescence is linearly related to SO2 concentration , and the fluorescence intensity is calculated according to the intensity signal of the reference detector and the PMT detector.
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Measurement range |
Min: (0~100) nmol/mol (ppb) Max: (0~20) μmol/mol(ppm) |
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Unit |
nmol/mol (ppb), μmol/mol (ppm), μg/m3, mg/m3(optional) |
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Zero noise |
≤0.2 ppb(RMS) |
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Detection lower limit |
0.4 ppb |
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Zero drift |
≤1 ppb / 24 hours |
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Span drift |
<5 ppb / 24 hours |
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Linearity |
<1%FS |
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Repeatability |
<1% |
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Sampling flow range |
900cm3/min±10% |
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Ambient temperature |
5 ℃ ~ 40 ℃ |
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Dimension |
178 mm×430 mm×635 mm |
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Weight |
<15kg, external pump 5kg |
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Power supply |
200V~240V, 50/60Hz, 400W |
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Analog output |
10V, 5V, 1V, 0.1V (optional) |
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Communication specification |
RS232/RS485 |
Feature
1. Measurement range 0~500ppb~20ppm.
2. High efficiency hydrocarbon remover and unique optical design, strong anti-interference ability.
3. Dark current compensation at fixed time, high stability
4. Self checking function of light intensity attenuation
5. Adaptive signal filtering technology to optimize response time
6. Large capacity memory, automatic storage of historical data
