Home > Products > Gas sensor > OX-B431 Ozone Sensor + Nitrogen Dioxide Sensor (O3 Sensor + NO2 Sensor)
OX-B431 Ozone Sensor + Nitrogen Dioxide Sensor (O3 Sensor + NO2 Sensor)
USD $80 - $100
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Product Details
Brand Name: | Alphasense | Place of Origin: | United Kingdom | Model Number: | OX-B431 |
Usage: | Gas Sensor |
Product Description
OX-B431 Oxidising Gas Sensor
Ozone + Nitrogen Dioxide
4-Electrode
OX-B431 O3 Sensor Specification | ||
OX-B431 O3 Sensor PERFORMANCE | ||
Sensitivity | nA/ppm at 1ppm O3 | -225 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 | ||
OX-B431 O3 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 |
OX-B431 O3 Sensor ENVIRONMENTAL | ||
Sensitivity @ -20℃ | (% output @ -20℃/output @ 20℃) @ 2ppm O3 | 70 to 90 |
Sensitivity @ 40℃ | (% output @ 40℃/output @ 20℃) @ 2ppm O3 | 95 to 125 |
Zero @ -20℃ | nA | 0 to 25 |
Zero @ 40℃ | nA | 5 to 100 |
OX-B431 O3 Sensor CROSS SENSITIVITY | ||
H2S | sensitivity % measured gas @ 5ppm H2S | <170 |
NO | sensitivity % measured gas @ 5ppm NO | <5 |
Cl2 | sensitivity % measured gas @ 5ppm Cl2 | <90 |
SO2 | sensitivity % measured gas @ 5ppm SO2 | <-7 |
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 |
OX-B431 O3 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 |
NO2 Sensor Specification | ||
OX-B431 NO2 Sensor PERFORMANCE | ||
Sensitivity to NO2 | nA/ppm at 2ppm NO2 | -250 to -650 |
Response time | t90 (s) from zero to 2ppm NO2 | <35 |
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 | ||
OX-B431 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 |
OX-B431 NO2 Sensor ENVIRONMENTAL | ||
Sensitivity @ -20℃ | (% output @ -20℃/output @ 20℃) @ 2ppm NO2 | 70 to 90 |
Sensitivity @ 40℃ | (% output @ 50℃/output @ 20℃) @ 2ppm NO2 | 95 to 110 |
Zero @ -20℃ | nA | 0 to 25 |
Zero @ 40℃ | nA | 5 to 50 |
OX-B431 NO2 Sensor CROSS SENSITIVITY | ||
H2S | sensitivity % measured gas @ 5ppm H2S | <170 |
NO | sensitivity % measured gas @ 5ppm NO | < 5 |
Cl2 | sensitivity % measured gas @ 5ppm Cl2 | <90 |
SO2 | sensitivity % measured gas @ 5ppm SO2 | <-7 |
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 |
OX-B431 NO2 Sensor KEY SPECIFICATIONS | ||
Temperature range | ℃ | -30 to 40 |
Pressure range | kPa | 80 to 120 |
Humidity range | % rh continuous | 15 to 85 |
Weight | g | <6 |
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