| 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 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 |
| 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 |
