Product introduction
I. UK Alphasense high-resolution carbon monoxide sensor (CO sensor)CO-B4 CO-B4+Description:
The CO-B4 sensor is a PPB sensordesigned for ambient air quality applications, with excellent baseline stability. This product is available in our standard formatCO-B4 and with our patented integrated smart technology (CO-B4+), the latter integrating an IST board with memory chip and temperature sensor in the sensor.
II. UK Alphasense high-resolution carbon monoxide sensor (CO sensor) CO-B4 CO-B4+ features:
Resolution up to 4ppb
High sensitivity, easy signal processing
Good linearity
III. UK Alphasense high-resolution carbon monoxide sensor (CO sensor) CO-B4 CO-B4+ typical applications:
Air quality trace carbon monoxide monitoring, carbon monoxide gas transmitters
UK Alphasense high-resolution carbon monoxide sensor (CO sensor) CO-B4 CO-B4+ dimensions:
IV. UK Alphasense high-resolution carbon monoxide sensor (CO sensor) CO-B4 CO-B4+ performance:
| Sensitivity | 2ppmCO,nA/ppm |
420~650
|
| Response time | t90 from zero to 10ppm CO (s) | <30 |
| Zero current | In zero air at 20℃ (nA) | -30~-250 |
| Noise* | Average noise (ppb) | 4 |
| Detection limit* | ppb | 4 |
| Range | CO warranty detection range (ppm) | 1000 |
| Linearity |
ppb value of full-scale error, linear from 0 to 500ppm
|
20~35
|
| Overload | ppm for stable response to gas pulses |
2000
|
*Requires low-noise voltage regulator circuit to obtain small interference and good resolution
V. UK Alphasense high-resolution carbon monoxide sensor (CO sensor) CO-B4 lifetime:
| Zero drift | ppb change per year in laboratory air |
< ±100
|
| Sensitivity drift | Percentage change per year in laboratory air | <10 |
| Working life | Time for output to drop to 80% of original signal (months) (24-month warranty) | >36 |
VI. UK Alphasense high-resolution carbon monoxide sensor (CO sensor) CO-B4 environment:
| Sensitivity at -20℃ | At 5ppm CO, (output at -20℃ / output at 20℃) % |
40~70
|
| Sensitivity at 50℃ | At 5ppm CO, (output at 50℃ / output at 20℃) % |
110~`125
|
| Zero at -20℃ |
nA
|
-30~30
|
| Zero at 50℃ |
nA
|
-50~-200
|
VII.UK Alphasensehigh-resolution carbon monoxide sensor (CO sensor) CO-B4 cross sensitivity:
| Filter capacity | ppm*hours H2S | 250,000 |
| Filter capacity | ppm*hours NO2 | 120,000 |
| Filter capacity | ppm*hours NO | 120,000 |
| Filter capacity | ppm*hours SO2 | 160,000 |
| H2S | 5ppmH2Percentage sensitivity to measured gas S | <1 |
| NO2 | 5ppmNO2Percentage sensitivity to measured gas | <1 |
| CL2 | 5ppmCL2Percentage sensitivity to measured gas | <1 |
| NO | 5ppmSO2Percentage sensitivity to measured gas | <-3 |
| SO2 | Percentage sensitivity to measured gas at 5ppm CO | <0.1 |
| H2 | 100ppmH2Percentage sensitivity to measured gas (20℃) | <50 |
| C2H4 | 100ppmC2H4Percentage sensitivity to measured gas | <1 |
| NH3 | 20ppmNH3Percentage sensitivity to measured gas | <0.1 |
VIII.UK AlphasenseHigh-resolution carbon monoxide sensor (CO sensor) CO-B4 key parameters:
| Temperature range | ℃ | -30~50 |
| Pressure range | Kpa | 80-120 |
| Humidity range | %rh | 15-90 |
| Storage life | Sealed storage life at 3-20℃ (months) | 6 |
| Load resistance | Ω (recommended) | 33-100 |
| Weight | grams | <13 |
IST board data
IX.UK AlphasenseHigh-resolution carbon monoxide sensor (CO sensor) CO-B4Matching sensor board:
Unique sensor board (ISB) Alphasense B4 4-electrode gas sensor - ISB
This unique sensor board (ISB) is used for Alphasense B4 series four-electrode gas sensors. The regulator provides dual-channel voltage output.
Low-noise bandgap provides bias voltage to NO sensors, while ISB can measure oxidizing (CO, H2S, SO2, and NO) and reducing (O3 and NO2) gases.
ISB is configured in four versions for specific sensors: NO, NO2, O3, and CO/H2S/SO2.
