ShenzhenYijiajie Electronic Co., Ltd.
The company advocates the corporate culture of "integrity and dedication, pragmatic innovation, unity and cooperation, diligence and progress", pays attention to standardized management, advocates
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SO2-B4 Electrochemical Sulfur Dioxide Gas Sensor For Air Quality Monitoring Flue Gas Analysis
Technical Features:
Application Scenarios:
It is suitable for fixed - installation sensing heads, portable safety instruments, urban/indoor air monitoring and stack gas analyzers, etc., and can provide reliable data support for air quality monitoring and industrial emission detection.
| Measuring Range | 100 ppm |
| Sensitivity | 275 - 475 nA/ppm (at 2 ppm SO2) |
| Response Time (t90) | < 30 s (from zero to 2 ppm SO2) |
| Zero Current in Zero Air at 20℃ | - |
| Noise (±2 standard deviations, ppb equivalent) | 5 |
| Resolution | < 1 ppm |
| Linearity | 0 - 2 ppb error at 100 ppm SO2, linear at 0 and 10 ppm SO2 |
| Over - gas Limit | 200 ppm |
| Zero Drift (ppb equivalent change/year in lab air) | < ±20 |
| Sensitivity Drift (% change/year in lab air, monthly test) | < ±15 |
| Operating Life | > 36 months (until 50% of the original signal) |
| Sensitivity at - 20℃ | 70 - 82% (output at - 20℃ / output at 20℃ @ 2 ppm SO2) |
| Sensitivity at 50℃ | 95 - 110% (output at 50℃ / output at 20℃ @ 2 ppm SO2) |
| Zero at - 20℃ (nA change from 20℃) | 0 - 10 |
| Zero at 50℃ (nA change from 20℃) | 10 - 30 |
| Filter Capacity | 450 ppm·hrs |
| H2S Sensitivity (% measured gas @ 5 ppm H2S) | < 2 |
| NO2 Sensitivity (% measured gas @ 5 ppm NO2) | < - 160 |
| Cl2 Sensitivity (% measured gas @ 5 ppm Cl2) | < - 40 |
| NO Sensitivity (% measured gas @ 5 ppm NO) | < - 2 |
| CO Sensitivity (% measured gas @ 5 ppm CO) | < 2 |
| H2 Sensitivity (% measured gas @ 100 ppm H2) | < 0.5 |
| C2H4 Sensitivity (% measured gas @ 100 ppm C2H4) | < 1 |
| NH3 Sensitivity (% measured gas @ 20 ppm NH3) | < 0.1 |
| CO2 Sensitivity (% measured gas @ 5% CO2) | < 0.1 |
| Temperature Range | - 30 to 50℃ |
| Pressure Range | 80 - 120 kPa |
| Humidity Range | 15 - 90% RH (continuous) |
| Storage Period | 6 months (@3 - 20℃, stored in sealed pot) |
| Load Resistor | 33 - 100 Ω |
| Weight | < 13 g |
