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OX-A431 Ozone + Nitrogen Dioxide Sensor (O3 + NO2 Sensor) 4-Electrode
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Product Details
Brand Name: | Alphasense | Place of Origin: | United Kingdom | Model Number: | OX-A431 |
Usage: | Gas Sensor |
Product Description
OX-A431 Oxidising Gas Sensor
Ozone + Nitrogen Dioxide
4-Electrode
Ozone (O3) Sensor Specification
Ozone Sensor PERFORMANCE | ||
Sensitivity | nA/ppm at 1ppm O3 | -200 to -550 |
Response time | t90 (s) from zero to 1ppm O3 | <45 |
Zero current | nA in zero air at 20℃ | -50 to 70 |
Noise* | ±2 standard deviations (ppb equivalent) | 15 |
Range | ppm O3 limit of performance warranty | 20 |
Linearity | ppm error at full scale, linear at zero and 20ppm O3 | <±0.5 |
Overgas limit | maximum ppm for stable response to gas pulse | 50 |
* Tested with Alphasense AFE low noise circuit | ||
Ozone Sensor LIFETIME | ||
Zero drift | ppb equivalent change/year in lab air | 0 to 20 |
Sensitivity drift | % change/year in lab air, monthly test | <-20 to -40 |
Operating life | months until 50% original signal (24 month warranted) | > 24 |
Ozone Sensor ENVIRONMENTAL | ||
Sensitivity @ -20℃ | (% output @ -20℃/output @ 20℃) @ 2ppm O3 | 60 to 80 |
Sensitivity @ 40℃ | (% output @ 40℃/output @ 20℃) @ 2ppm O3 | 80 to 105 |
Zero @ -20℃ | nA | 0 to 25 |
Zero @ 40℃ | nA | 20 to 90 |
Ozone Sensor CROSS SENSITIVITY | ||
H2S | sensitivity % measured gas @ 5ppm H2S | <100 |
NO | sensitivity % measured gas @ 5ppm NO | <5 |
Cl2 | sensitivity % measured gas @ 5ppm Cl2 | <85 |
SO2 | sensitivity % measured gas @ 5ppm SO2 | <-6 |
CO | sensitivity % measured gas @ 5ppm CO | <0.1 |
C2H4 | sensitivity % measured gas @ 100ppm C2H4 | <0.1 |
NH3 | sensitivity % measured gas @ 20ppm NH3 | <0.1 |
H2 | sensitivity % measured gas @ 100ppm H2 | <0.1 |
CO2 | sensitivity % measured gas @ 5% Vol CO2 | 0.1 |
Halothane | sensitivity % measured gas @ 100ppm Halothane | <0.1 |
Ozone Sensor KEY SPECIFICATIONS | ||
Temperature range | ℃ | -30 to 40 |
Pressure range | kPa | 80 to 120 |
Humidity range | % rh continuous | 15 to 85 |
Storage period | months @ 3 to 20℃(stored in sealed pot) | 6 |
Load resistor | Ω (AFE circuit recommended) | 33 to 100 |
Weight | g | <6 |
Nitrogen Dioxide (NO2) Sensor Specification
NO2 Sensor PERFORMANCE | ||
Sensitivity to NO2 | nA/ppm at 2ppm NO2 | -200 to -550 |
Response time | t90 (s) from zero to 1ppm NO2 | <45 |
Zero current | nA in zero air at 20℃ | -50 to 70 |
Noise* | ±2 standard deviations (ppb equivalent) | 15 |
Range | ppm NO2 limit of performance warranty | 20 |
Linearity | ppm error at full scale, linear at zero and 20ppm NO2 | <±0.5 |
Overgas limit | maximum ppm for stable response to gas pulse | 50 |
* Tested with Alphasense AFE low noise circuit | ||
NO2 Sensor LIFETIME | ||
Zero drift | ppb equivalent change/year in lab air | 0 to 20 |
Sensitivity drift | % change/year in lab air, monthly test | <-20 to -40 |
Operating life | months until 50% original signal (24 month warranted) | > 24 |
NO2 Sensor ENVIRONMENTAL | ||
Sensitivity @ -20℃ | (% output @ -20℃/output @ 20℃) @ 2ppm NO2 | 50 to 80 |
Sensitivity @ 40℃ | (% output @ 50℃/output @ 20℃) @ 2ppm NO2 | 115 to 130 |
Zero @ -20℃ | nA | 0 to 25 |
Zero @ 40℃ | nA | 20 to 50 |
NO2 Sensor CROSS SENSITIVITY | ||
H2S | sensitivity % measured gas @ 5ppm H2S | <100 |
NO | sensitivity % measured gas @ 5ppm NO | <5 |
Cl2 | sensitivity % measured gas @ 5ppm Cl2 | <85 |
SO2 | sensitivity % measured gas @ 5ppm SO2 | <-6 |
CO | sensitivity % measured gas @ 5ppm CO | <0.1 |
C2H4 | sensitivity % measured gas @ 100ppm C2H4 | <0.1 |
NH3 | sensitivity % measured gas @ 20ppm NH3 | <0.1 |
H2 | sensitivity % measured gas @ 100ppm H2 | <0.1 |
CO2 | sensitivity % measured gas @ 5% Vol CO2 | 0.1 |
Halothane | sensitivity % measured gas @ 100ppm Halothane | <0.1 |
NO2 Sensor KEY SPECIFICATIONS | ||
Temperature range | ℃ | -30 to 40 |
Pressure range | kPa | 80 to 120 |
Humidity range | % rh continuous | 15 to 85 |
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