Xi'an Kacise Optronics Co.,Ltd.
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KQT-H₂S Electrochemical Hydrogen Sulfide Sensor
The KQT-H₂S hydrogen sulfide gas detection sensor is a constant - potential electrolysis type sensor. Hydrogen sulfide and oxygen undergo corresponding oxidation - reduction reactions on the working electrode and the counter - electrode respectively, and release charges to form an electric current. The magnitude of the generated current is proportional to the concentration of hydrogen sulfide. The concentration of hydrogen sulfide can be determined by measuring the magnitude of the current.
1.Hydrogen sulfide alarm
2.Hydrogen sulfide gas detection in industrial sites
3.Hydrogen sulfide detection in mines
4.Hydrogen sulfide detection in the atmospheric environment
1.High precision and long service life
2.Fast response speed and quick return to zero
3.Low power consumption and high sensitivity
4.Wide linear range
5.Strong anti - interference ability
6.Excellent repeatability and stability
| Project | Parameter |
| Model | KQT-H₂S |
| Detection Principle | Electrochemical three - electrode |
| Detected Gas | H₂S |
| Detection Range | 0 - 100PPM |
| Maximum Load Concentration | 500PPM |
| Sensitivity | 650±200nA/PPM |
| Zero - point Drift | ±2PPM |
| Resolution | 1PPM |
| Response Time | T90< 30s |
| 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 | Linear, regression coefficient R² = 0.999 |
| Working Pressure | 90 to 110 kPa |
| Shelf Life | 12 months after delivery |
| Service Life | 3 years |