Nitrog Dioxide ogen NO2-B43F Nitrogen Dioxide Sensor 4-Electrode 4-Electrode Technical specifications Version 1.0 NO2-B43F Nitrogen Dioxide Sensor – 4-Electrode Figure 1 NO2-B43F Schematic Diagram All dimensions in millimetres (± 0.15mm) Top Top View View Bottom View Bottom View SideSide View View ERFORMANCE Sensitivity nA/ppm at nA/ppm at 2ppm NO -200 to -650 Performance Sensitivity 2ppm NO2 Response time t90 (s) from zero to 2ppm NO < 80 zero to at 20°C Response time current (s) fromnA in zero air2ppm NO2 t90 Zero -80 to +80 Zero current Noise nA in zero air at 20°C ±2 standard deviations (ppb equivalent) 15 Range ppm NO limit of performance warranty 20 Noise* ±2 standard deviations (ppb equivalent) Linearity ppm NO limiterrorperformanceat zero and 20ppm ppb of at full scale, linear warranty < ± 0.5 Range 2 Overgas limit NO maximum ppm for stable response to gas pulse 50 Linearity ppb error at full scale, linear at zero and 20ppm NO2 Tested with Alphasense ISB low noise circuit Overgas limit maximum ppm for stable response to gas pulse 2 Zero drift ppb equivalent change/year in lab air * Tested with Alphasense ISB low noise circuit Sensitivity drift Operating ppb life % change/year in lab air, monthly test months until 50% original signal (24-month equivalent change/year in lab air warranted) Zero drift Sensitivity drift % change/year in lab air, monthly test Sensitivity @ -20°C % 60 to Environmental Operating life months until(output @ -20°C/output @ 20°C) @ 2ppm NO warranted)80 50% original signal (24 month Sensitivity @ 40°C Zero @ -20°C Zero @ 40°C NVIRONMENTAL Sensitivity @ -20°C Cross-sensitivity Sensitivity @ O40°C H S Zero @ -20°C NO Zero @ 40°CCl 3 ROSS ENSITIVITY (% output @ -20°C/output @ 20°C) @ 2ppm NO2 filter capacity @ hrs) @ 0.5ppm O < (% output (ppm 40°C/output @ 20°C) @ 2ppm NO2500 sensitivity % measured gas @ 5ppm H S < -80 nA sensitivity % measured gas @ 5ppm NO <5 nA sensitivity % measured gas @ 5ppm Cl < 100 3 SO2 sensitivity % measured gas @ 5ppm SO2 CO capacity (ppm.hr) sensitivity % measured gas @ 5ppm CO Filter @ 0.5ppm O3 H2 sensitivity % measured gas @ 100ppm H2 sensitivity sensitivity % measured gas @ 100ppm % measured gas @ 5ppm H2H S C2H4 C2 4 sensitivity sensitivity % measured gas @ 20ppm % measured gas @ 5ppm NO NH3 NH3 CO2 CO sensitivity sensitivity % measured gas @ 5% volume Cl22 % measured gas @ 5ppm Halothane % measured gas @ 5ppm sensitivity sensitivity % measured gas @ 100ppm Halothane SO O3 H2S NO Cl2 SO2 2 CO sensitivity % measured gas @ 5ppm CO Temperature range °C Key Specifications H2 sensitivity % measured gas @ 100ppm H2 Pressure range kPa C2H4 sensitivity % measuredcontinuous@ 100ppm C2H4 Humidity range % rh gas Storage period months @ 3 20°C 20ppm pot) NH3 sensitivity % measured gas to @ (stored in sealedNH3 Load resistor � (ISB circuit is recommended) CO2 sensitivity % measured gas @ 5% Vol CO2 Weight g Halothane sensitivity % measured gas @ 100ppm Halothane EY SPECIFICATIONS Temperature range °C T: +44 (0)1376 556700 E: [email protected] W: www.alphasense.com Pressure range kPa For further information on the performance of this sensor, on other sensors in the range or any other subject, please contact Alphasense Ltd. or visit our webs

Technical specifications Version 1.0 Perf erformance Data NO2-B43F Performance Data Figure 1 Sensitivity Temperature Dependence Perf erformance Data NO2-B43F Performance Data Figure 2 Sensitivity Temperature Dependence 120 % output (referenced to 20oC) % output (referenced to 20oC) % output (referenced to 20oC) Figure 2 Sensitivity Temperature Dependence 110 Figure 2 shows the temperature dependence of sensitivity at 2ppm NO2. This data is taken from a typical batch ofshows the sensors. Figure 2 Figure 1 shows the temperature dependence of temperature dependence of sensitivity 2ppm NO . sensitivity...