UK Alphasense Carbon Monoxide Sensor (CO Sensor) - CO-A4
High Resolution
High Accuracy
Good Linearity
Product Introduction
1. Typical Applications of Carbon Monoxide Sensor (CO Sensor) CO-A4
Trace carbon monoxide monitoring in air quality, carbon monoxide gas transmitters.
2. Performance of High-Resolution Carbon Monoxide Sensor (CO Sensor) CO-A4
| Sensitivity |
2ppmCO，nA/ppm |
220~410 |
| Response Timet90 |
From Zero to10ppmCO(s) |
<30 |
| Zero Current |
20℃In Zero Air (nA） |
-100~+10 |
| Noise* |
Average Noise (ppb） |
20 |
| Detection Limit* |
ppb |
20 |
| Range |
Guaranteed PerformanceCOMeasurement Limit (ppm） |
500 |
| Linearity |
Full ScaleppmError,0-15ppmLinearity at |
<±1 |
| Overload |
Stable Response to Gas PulseszuiLargeppm |
2000 |
*Requires low-noise voltage regulator circuit to achieve relatively small interference and better resolution
3. Lifespan of High-Resolution Carbon Monoxide Sensor (CO Sensor) CO-A4
| Zero Drift | ppb change per year in laboratory air | <±100 |
| Sensitivity Drift | Percentage change per year in laboratory air | <10 |
| Operating Life | Time until output drops to 80% of original signal (months) (warranty 24 months) | >36 |
4. Environment of High-Resolution Carbon Monoxide Sensor (CO Sensor) CO-A4
| Sensitivity at -20°C | At 5ppm CO, (output at -20°C / output at 20°C) % | 50~85 |
| Sensitivity at 50°C | At 5ppm CO, (output at 50°C / output at 20°C) % | 110-125 |
| Zero at -20°C | Reference ppm change from 20°C | 10~40 |
| Zero at 50°C | Reference ppm change from 20°C | -120~-200 |
5. Key Parameters of High-Resolution Carbon Monoxide Sensor (CO Sensor) CO-A4
| Temperature Range | ℃ | -30~50 |
| Pressure Range | Kpa | 80-120 |
| Humidity Range | %rh | 15-90 |
| Storage Life | Sealed storage life at 3-20°C (months) | 6 |
| Load Resistor | Ω (recommended) | 33-100 |
| Weight | grams | <6 |
6. Companion Sensor Circuit Board for High-Resolution Carbon Monoxide Sensor (CO Sensor) CO-A4:
Analog Front End Circuit (AFE) A4Series Air Quality Sensors -AFE
Based on product design, A4 series air quality sensors need to be used with an analog front end circuit (AFE): Since portable monitoring devices require compact size, we designed the circuit board with high component density, saving valuable space for your monitoring device. Based on product design, A4 series air quality sensors need to be used with an analog front end circuit (AFE): Since portable monitoring devices require compact size, we designed the circuit board with high component density, saving valuable space for your monitoring device. Now simply connect the AFE and A4 sensor to a multiplexed ADC to quickly record air quality data.
