The S4VOC gas detection sensor is a constant potential electrolytic type sensor. VOC gas and oxygen undergo corresponding oxidation-reduction reactions on the working electrode and counter electrode, respectively, releasing charges and forming a current. The magnitude of the generated current is proportional to the VOC gas concentration. By measuring the magnitude of the current, the concentration of VOC gas can be determined.
| Item | Parameter |
| model | S4-VOC |
| Detection principle | Electrochemical Three electrodes |
| Detection gas | VOC |
| Detection range | 0-200PPM |
| Maximum load concentration | 500PPM |
| Sensitivity | 55±15 nA/ppm |
| Resolution | 1PPM |
| Response time | ≤60s |
| Bias voltage | 0mV |
| Load resistance | 100Ω |
| Working Temperature | -30℃-50℃ |
| Working Humidity | 15%RH to 90%RH（no condensation） |
| Repeatability | 2% output signal |
| Long-term stability | ＜2% signal/month |
| Linearity | Linearity |
| Work pressure | 90 to 110 kPa |
| Shelf life | 12 months after delivery |
| Service life | 2 years |
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