User manual for the Winsen ME2-H2 hydrogen gas sensor, covering specifications, wiring, and safety guidelines.
The Winsen ME2-H2 is a fuel‑cell type electrochemical sensor that generates a current proportional to hydrogen concentration. This manual provides the sensor’s technical specifications, recommended circuit, and performance characteristics.
Safety and handling instructions are included, such as proper installation, aging time, and restrictions on exposure to solvents, corrosive gases, and mechanical shock. Contact information for Winsen is provided for further support. This manual is written in Chinese.
| Detection Gas | Hydrogen (H2) |
|---|---|
| Range | 0–30000 ppm |
| Maximum Measurement Limit | 40000 ppm |
| Sensitivity | 2 ± 1 nA/ppm |
| Resolution | 50 ppm |
| Response Time (T90) | <30 s |
| Recommended Load Resistance | 200 Ω |
| Stability (per year) | <10 % |
| Linearity | Linear |
| Zero‑point Drift (‑40 °C~90 °C) | ≤100 ppm |
| Temperature Range | -20 °C to 50 °C |
| Humidity Range | 15 %–90 % RH |
| Pressure Range | Standard atmospheric pressure ±10 % |
| Service Life | 3 years |
The manual recommends a load resistance of 200 Ω.
The sensor must be aged for at least 48 hours before use.
The response time is less than 30 seconds.
It operates from –20 °C to 50 °C.