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NO2-AE Nitrogen Dioxide Sensor (NO2 Sensor) Description
Alphasense Nitrogen Dioxide gas sensors operate using proven fuel cell technology.
NO2-AE Nitrogen Dioxide Sensor size:
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-AE Nitrogen Dioxide Sensor (NO2 Sensor) PERFORMANCE | ||
| Sensitivity | nA/ppm @ 20℃ in 10ppm NO2 (33Ω Load Resistor) | -100 to -170 |
| Response time | t90 (s) from zero to 10ppm NO2 (33Ω Load Resistor) | <40 |
| Zero current | ppm equivalent in zero air | <± 1.5 |
| Resolution | RMS noise (ppm equivalent) (33Ω) | <0.1 |
| Range | ppm limit of performance warranty | 200 |
| Linearity | ppm error at 200ppm, linear at 30 and 100ppm NO2 | <2 to 11 |
| Overgas limit | maximum ppm for stable response to 10 minute gas pulse | > 1000 |
| NO2-AE Nitrogen Dioxide Sensor (NO2 Sensor) LIFETIME | ||
| Zero drift | ppm equivalent change/year in lab air | nd |
| Sensitivity drift | % change/month in lab air, twice monthly gassing | <2 |
| Operating life | months until 80% original signal (24 month warranted) | > 24 |
| NO2-AE Nitrogen Dioxide Sensor (NO2 Sensor) ENVIRONMENTAL | ||
| Sensitivity @ -20°C | % (output @ -20°C/output @ 20°C) @10ppm NO2 | 75 to 95 |
| Sensitivity @ 50°C | % (output @ 40°C/output @ 20°C) @ 10ppm NO2 | 98 to 110 |
| Zero @ -20°C | ppm equivalent | <± 0.5 |
| Zero @ 50°C | ppm equivalent | <0 to -5 |
| NO2-AE Nitrogen Dioxide Sensor (NO2 Sensor) CROSS SENSITIVITY | ||
| CO sensitivity | % measured gas @ 400ppm CO | <3.5 |
| NO sensitivity | % measured gas @ 50ppm NO | <1 |
| SO2 sensitivity | % measured gas @ 20ppm SO2 | <-10 |
| Cl2 sensitivity | % measured gas @ 5ppm Cl2 | <90 |
| H2 sensitivity | % measured gas @ 400ppm H2 | <-0.8 |
| H2S sensitivity | % measured gas @ 200ppm H2S | <-220 |
| C2H4 sensitivity | % measured gas @ 400ppm C2H4 | < 0.1 |
| NH3 sensitivity | % measured gas @ 20ppm NH3 | <-1 |
| CO2 sensitivity | % measured gas @ 5% volume CO2 | 0 |
| O3 sensitivity | % measured gas @ 100ppb O3 | <60 |
| NO2-AE Nitrogen Dioxide Sensor (NO2 Sensor) KEY SPECIFICATIONS | ||
| Temperature range | °C | -20 to 50 |
| Pressure range | kPa | 80 to 120 |
| Humidity range | % rh continuous | 15 to 90 |
| Storage period | months @ 3 to 20°C (stored in sealed pot) | 6 |
| Load resistor | Ω (for optimum performance) | 33 |
| Weight | g | <6 |
Matched Transmitter board for NO2-AE NO2 Sensor
4-20mA Digital Transmitter Board
• Factory calibration, custom-set for immediate use
• Digital zero, sensitivity and temperature compensation
• Digital and 4-20mA output
• Biased or unbiased operation
• Calibration and range change
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