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SO2-B4

SO2-B4
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Dioxide SO2-B4 Sulfur Dioxide Sensor Technical specifications Version 1.0 SO2-B4 Sulfur Dioxide Sensor – 4-Electrode Figure 1 SO2-B4 Schematic Diagram All dimensions in millimetres (± 0.15mm) Bottom View Bottom View PERFORMANCE Performance Side View Side Sensitivity nA/ppm at 2ppm SO2 275 to 520 Sensitivity nA/ppm 275 to 520 zero SO < 60 Response time t90 (s) fromat 2ppm to 2ppm SO2 Response time t90 (s) from zero to 2ppm SO < 60 Zero current nA innA in zero airat 20°C zero air at 20°C -100 to +100 Zero current -100 to +100 Noise* Noise ±2 standard deviations (ppb equivalent) 5 ±2 standard deviations (ppb equivalent) 5 100 Range Range ppm ppm limit of performance warranty limit of performance warranty 100 Linearity ppb error 100ppm , linear at zero at zero and 10ppm SO Linearity ppb error at at 100ppm SOSO2, linearand 10ppm SO 0 to -2 0 to -2 2 Overgas limit maximum ppm for stable response to gas pulse 200 OvergasTested with Alphasense ISB low noise circuit stable response to gas pulse limit maximum ppm for 200 2 ENVIRONMENTAL Cross Sensitivity CROSS SENSITIVITY * Tested with Alphasense ISB low noise circuit Zero drift Sensitivity drift drift Operating life ppb equivalent change/year in lab air % change/year in lab air, monthly in equivalent change/yeartest lab air months until 50% original signal (24-month warranted) Zero ppb Sensitivity drift % change/year in lab air, monthly test Operating life @ -20°C months until 50% original signal (24 month warranted) Sensitivity % (output @ -20°C/output @ 20°C) @ 2ppm SO 70 to 90 Sensitivity @ 50°C Sensitivity @ -20°C Zero @ -20°C Zero @ 50°C Sensitivity @ 50°C Zero @ -20°C Zero @ Filter capacity 50°C H2S sensitivity NO2 sensitivity Filter capacity Cl2 sensitivity NO sensitivity H2S sensitivity CO sensitivity NO2 sensitivity H2 sensitivity Cl2 sensitivity C2H4 sensitivity NO sensitivity NH3 sensitivity CO2 sensitivity CO sensitivity O3 sensitivity H sensitivity 2 (% (% nA change from 20°C ppm hrs nA change from 20°C % measured gas @ 5ppm H2S % measured gas @ 5ppm NO2 ppm·hrs % measured gas @ 5ppm Cl2 % measured gas 5ppm NO % measured gas @ @ 5ppm % measured gas @ % measured gas 5ppm CO @ 5ppm % measured gas @ 100ppm H2 % measured gas 100ppm @ 5ppmC H % measured gas @ 2 4 % measured gas 20ppm 5ppmNH3 % measured gas @ @ % measured gas @ @ % measured gas 5% 5ppmCO2 % measured gas @ @ 100ppm O3 % measured gas 0.5ppm C H sensitivity % measured gas @ 100ppm Temperature range °C Key Specifications 2 4 NH3 sensitivity % measured gas @ 20ppm Pressure range kPa CO2 sensitivity % measured gas note below) Humidity range % rh continuous (see @ 5% Storage period months @ 3 gas @ 0.5ppm O3 sensitivity % measured to 20°C (stored in sealed pot) Load resistor Weight KEY Temperature range °C -30 to 50 SPECIFICATIONS Pressure range kPa 80 to 120 Humidity range % rh continuous (see note below) 15 to 90 T: +44 (0)1376 556700 E: sensors@alphasense.com W: www.alphasense.com @ 3 For further information on the performance of this sensor, on other sensors in the range or any other Storage period months to 20°Ccontact Alphasense Ltd. or visit our website at “www.alphasense.com”. (stored in sealed pot) 6 subject, please Load Resistor

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SO2-B4 Perfomance Data Perf erfomance Data Technical specifications Version 1.0 Figure 1 Sensitivity Temperature Dependence Figure 2 Sensitivity Temperature Dependence Perf erfomance Data SO2-B4 Perfomance Data Figure 2 shows the temperature dependence of sensitivity at 2ppm SO2. % output, referenced to referenced to 20oC (nA) to 20oC (nA) % output, 20oC (nA) % output, referenced Figure 2 Sensitivity Temperature Dependence 95 Perf erfomance Data SO2-B4 Perfomance Data This data is taken from a Figurebatch ofshows the 2 typical sensors. Figure 1 shows the temperature dependence of...

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