The S4-CO carbon monoxide gas detection sensor is a constant-potential electrolysis sensor. The carbon monoxide and oxygen undergo corresponding oxidation-reduction reactions on the working electrode and the counter electrode and release charges to form a current. The current generated is proportional to the concentration of carbon monoxide, and the test current is passed. The size can determine the level of carbon monoxide concentration.
| Item | Parameter |
| Model number | S4-CO |
| 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 | ＜25s |
| Bias voltage | 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, regression coefficient R²=0.999 |
| Work pressure | 90 to 110 kPa |
| Shelf life | 12 months after delivery |
| Service life | 3 years |
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