S4-VOC gas detection sensor is a constant potential electrolytic type sensor. VOC and oxygen will undergo corresponding oxidation-reduction reaction on the working electrode and the counter electrode respectively and release charge to form a current. The generated current is proportional to the TVOC concentration. The TVOC concentration can be determined by measuring the current.
| Item | Parameter |
| model | S4-VOC |
| Detection principle | Electrochemical Three electrodes |
| Detection gas | VOC |
| Detection range | 0-100PPM |
| Maximum load concentration | 200PPM |
| output signal | 55±15 nA/ppm |
| Zero drift | 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,regression coefficient R²=0.999 |
| Work pressure | 90 to 110 kPa |
| Shelf life | 12 months after delivery |
| Service life | 2 years |
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