- Week technology ltd
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Shenzhen, Guangdong, China
- Main products: Gas Sensor, Temperature Sensor, Humidity Sensor, Pressure Sensor, Ultrasonic Sensor, UV Sensor, Wind Speed sensor, Liquid Level Sensor
Home > Products > Gas sensor > NO-A4 Nitric Oxide Sensor (NO Sensor) 4-Electrode
NO-A4 Nitric Oxide Sensor (NO Sensor) 4-Electrode
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Product Details
| Brand Name | Alphasense | Place of Origin | United Kingdom | |
| Model Number | NO-A4 | Usage | Gas Sensor | |
| Theory | Other, Electrochemical Gas Sensor | Output | Analog Sensor |
Product Description
NO-A4 Nitric Oxide Sensor (NO Sensor) Description
Alphasense Nitric Oxide gas sensors operate using proven fuel cell technology.
NO-A4 Nitric Oxide Sensor size:
20mm diameter, the industry standard size for portable gas detectors
The NO 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 200 parts per billion (ppb) whilst giving linear outputs to as high as 250ppm. The sensors are suitable for inclusion in fixed installation sensing heads, portable safety instruments, urban air monitoring and stack gas analysers.
Alphasense NO sensors provide a significant improvement in stability of response to transient relative humidity changes.
The NO 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.
| NO-A4 Nitric Oxide Sensor PERFORMANCE | ||
| Sensitivity | nA/ppm in 2ppm NO | 250 to 425 |
| Response time | t90 (s) from zero to 2ppm NO | <25 |
| Zero current | nA in zero air at 20℃ | 10 to 80 |
| Noise* | ±2 standard deviations (ppb equivalent) | 80 |
| Range | ppm NO limit of performance warranty | 20 |
| Linearity | ppb error at full scale, linear at zero and 5ppm NO | <±1 |
| Overgas limit | maximum ppm for stable response to gas pulse | 50 |
| * Tested with Alphasense AFE low noise circuit | ||
| NO-A4 Nitric Oxide Sensor LIFETIME | ||
| Zero drift | ppb equivalent change/year in lab air | 0 to 50 |
| Sensitivity drift | % change/year in lab air, monthly test | 0 to -20 |
| Operating life | months until 50% original signal (24 month warranted) | > 24 |
| NO-A4 Nitric Oxide Sensor ENVIRONMENTAL | ||
| Sensitivity @ -20℃ | (% output @ -20℃/output @ 20℃) @ 2ppm NO | 35 to 60 |
| Sensitivity @ 50℃ | (% output @ 50℃/output @ 20℃) @ 2ppm NO | 120 to 135 |
| Zero @ -20℃ | nA change from 20℃ | -10 to -50 |
| Zero @ 50℃ | nA change from 20℃ | 200 to 350 |
| NO-A4 Nitric Oxide Sensor CROSS SENSITIVITY | ||
| H2S sensitivity | % measured gas @ 5ppm H2S (after 3 minutes) | <20 |
| NO2 sensitivity | % measured gas @ 5ppm NO2 (after 3 minutes) | <7 |
| Cl2 sensitivity | % measured gas @ 5ppm Cl2 | <4 |
| SO2 sensitivity | % measured gas @ 5ppm SO2 | <4 |
| H2 sensitivity | % measured gas @ 100ppm H2 | <0.1 |
| CO sensitivity | % measured gas @ 5ppm CO | <0.3 |
| NH3 sensitivity | % measured gas @ 5ppm NH3 | <0.1 |
| CO2 sensitivity | % measured gas @ 5% Vol CO2 | <0.1 |
| Halothane sensitivity | @ 100ppm Halothane | <0.1 |
| NO-A4 Nitric Oxide Sensor KEY SPECIFICATIONS | ||
| Bias voltage | mV (working electrode potential is above reference electrode) | +200 |
| Temperature range | ℃ | -30 to 50 |
| 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 is recommended) | 33 to 100 |
| Weight | g | <6 |
Matched Transmitter board for NO-A4 NO Sensor
Analogue Front End (AFE) Alphasense A4 Air Quality Sensors
The family of Analogue Front End (AFE) circuits are designed for use with the A4 air quality sensors. Connect the AFE with A4 sensors to your multtiplexed ADC and you are recording air quality data immediately.
Contact Us
- Week technology ltd
- Contact nameCherry Chat Now
- Phone86-0755-83289036-843
- Address16 Floor, Building #3, Zhongke Mansion, Gaoxin South, Shenzhen, Guangdong
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