Product Introduction
I. Description of High Resolution Nitric Oxide Sensor NO-A4
NO-A4 is a high-resolutionnitric oxide sensorin 4-series size, ideal for environmental air quality monitoring systems and instruments.
II. Main Parameters of High Resolution Nitric Oxide Sensor NO-A4
Sensitivity: 250-425 nA/ppm
Response Time: < 25s
Dimensions: Φ20.2×16.5
Zero Current: 10-80nA
Range: 20ppm
Overload: 50ppm
III. Typical Applications of Nitric Oxide Sensor NO-A4
Trace nitric oxide monitoring in air quality, nitric oxide gas transmitters.
IV. Performance of High Resolution Nitric OxideSensor(NOSensor)NO-A4
| Sensitivity | nA/ppm@2ppmNO | 250~425 |
| Response Time | t90 from zero to 1ppm NO (s) | <25 |
| Zero Current | In zero air at 20°C (nA) | 10~80 |
| Noise | Average noise (ppb) | 80 |
| Detection Limit | ppb | 80 |
| Range | NO warranty detection range (ppm) | 20 |
| Linearity | Error in ppm over full range, linear from 0-5ppm | <±1 |
| Overload | Maximum ppm for stable response to gas pulses | 50 |
A low-noise voltage regulator circuit is required to minimize interference and achieve better resolution.
V.High Resolution Nitric OxideSensor(NOSensor)NO-A4Lifetime
| Zero Drift | Annual change in ppb in laboratory air | 0~50 |
| Sensitivity Drift | Annual percentage change in laboratory air | 0~-20 |
| Operating Life | Time until output drops to 80% of original signal (months) (warranty 24 months) | >24 |
VI.High Resolution Nitric OxideSensor(NOSensor)NO-A4Environment
| Sensitivity at -20°C | At 2ppm NO, (output at -20°C / output at 20°C) % | 35~60 |
| Sensitivity at 50°C | At 2ppm NO, (output at 50°C / output at 20°C) % | 120~135 |
| Zero at -20°C | Change in ppm relative to 20°C | -10~-50 |
| Zero at 50°C | Change in ppm relative to 20°C | 200~350 |
VII.High Resolution Nitric OxideSensor(NOSensor)NO-A4Cross Sensitivity
| H2S | Percentage sensitivity to 20ppm H2S | <30 |
| Cl2 | Percentage sensitivity to 10ppm Cl2 | <5 |
| NO2 | Percentage sensitivity to 10ppm NO2 (after 3 minutes) | <3 |
| SO2 | Percentage sensitivity to 20ppm SO2 | <4 |
| CO | Percentage sensitivity to 10ppm CO | <0.3 |
| H2 | Percentage sensitivity to 400ppm H2 | <0.1 |
| NH3 | Percentage sensitivity to 20ppm NH3 | <0.1 |
| CO2 | Percentage sensitivity to 5% CO2 | <0.1 |
| Halothane | Percentage sensitivity to 100ppm halothane | <0.1 |
VIII.High Resolution Nitric OxideSensor(NOSensor)NO-A4Key Parameters
| Bias Voltage | mV (working electrode potential relative to reference electrode) | 200 |
| Temperature Range | ℃ | -30~50 |
| Pressure Range | Kpa | 80-120 |
| Humidity Range | %rh | 15~85 |
| Storage Life | Sealed storage life at 3-20°C (months) | 6 |
| Load Resistor | Ω (recommended) | 33-100 |
| Weight | grams | <6 |
IX.High Resolution Nitric OxideSensor(NOSensor)NO-A4Companion Sensor Circuit Board:
Analog Front End Circuit(AFE) A4Series Air Quality Sensors -AFE
Based on product design, A4 series air quality sensors require an analog front-end circuit (AFE): Since portable monitoring devices require compact size, we designed the circuit board with high component density to save valuable space for your monitoring device. Based on product design, A4 series air quality sensors require an analog front-end circuit (AFE): Since portable monitoring devices require compact size, we designed the circuit board with high component density to save valuable space for your monitoring device. Now simply connect the AFE and A4 sensor to a multiplexed ADC to quickly record air quality data.
