NO2-A43F Nitrogen Dioxide Sensor Description
Alphasense Nitrogen Dioxide gas sensors operate using proven fuel cell technology.
NO2-A43F Nitrogen Dioxide Sensor sizes:
20mm diameter, the industry standard size for portable gas detectors
The NO2 range provides OEMs with reliable sensors for use in a number of high volume applications. Strong signal levels combined with low zero current allows resolution to 50 parts per billion (ppb) and an operating range to 20ppm. The sensors are suitable for use in fixed installation sensing heads, portable safety instruments, urban air monitoring and stack gas analysers.
The NO2 sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leakproof housing is moulded with a colour coded top for ease of identification.
NO2-A43F Nitrogen Dioxide Sensor PERFORMANCE | ||
Sensitivity | nA/ppm at 2ppm NO2 | -175 to -450 |
Response time | t90 (s) from zero to 2ppm NO2 | <60 |
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-A43F Nitrogen Dioxide 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-A43F Nitrogen Dioxide Sensor ENVIRONMENTAL | ||
Sensitivity @ -20℃ | (% output @ -20℃/output @ 20℃) @ 2ppm NO2 | 40 to 80 |
Sensitivity @ 40℃ | (% output @ 50℃/output @ 20℃) @ 2ppm NO2 | 95 to 115 |
Zero @ -20℃ | nA | 0 to +25 |
Zero @ 40℃ | nA | 20 to 60 |
NO2-A43F Nitrogen Dioxide Sensor CROSS SENSITIVITY | ||
O3 | Filter capacity (ppm hrs) @ 2ppm O3 | > 500 |
H2S | sensitivity % measured gas @ 5ppm H2S | <-80 |
NO | sensitivity % measured gas @ 5ppm NO | <5 |
Cl2 | sensitivity % measured gas @ 5ppm Cl2 | <75 |
SO2 | sensitivity % measured gas @ 5ppm SO2 | <-5 |
CO | sensitivity % measured gas @ 5ppm CO | <-5 |
C2H4 | sensitivity % measured gas @ 100ppm C2H4 | <1 |
NH3 | sensitivity % measured gas @ 20ppm NH3 | <0.2 |
H2 | sensitivity % measured gas @ 100ppm H2 | <0.1 |
CO2 | sensitivity % measured gas @ 5% Vol CO2 | 0.1 |
Halothane | sensitivity % measured gas @ 100ppm Halothane | nd |
NO2-A43F Nitrogen Dioxide 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 |