The H4CO carbon monoxide gas detection sensor is a constant potential electrolytic sensor. Carbon monoxide and oxygen undergo corresponding redox reactions on the working electrode and counter electrode, respectively, releasing charges and forming a current. The magnitude of the generated current is directly proportional to the carbon monoxide concentration. By measuring the magnitude of the current, the carbon monoxide concentration can be determined.
| Item | Parameter |
| Model number | H4CO-1000 |
| Detection principle | Electrochemical three electrodes |
| Detection gas | CO |
| Detection range | 0-1000PPM |
| Maximum load concentration | 2000PPM |
| Sensitivity | 75±15nA/PPM |
| Zero drift | ＜2PPM |
| Resolution | ＜1PPM |
| Response time | ＜20s |
| Bias | 0 |
| Load resistance | 5~30Ω |
| Temperature range | -30℃-50℃ |
| Humidity range | 15%RH to 90%RH (no condensation) |
| Repeatability | 1% output signal |
| Long-term stability | ＜2% signal/month |
| Linearity | Linearity,The regression coefficient R²=0.999 |
| Work pressure | 90 to 110 kPa |
| Shelf life | 24 months after delivery |
| Service life | 2 years |
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