SEM331 H2 Hydrogen sensor Adopt imported electrochemical sensors of major brands are used, which are stable and durable; Various measurement ranges are available, 0~1000ppm, 0~40000ppm; High measurement accuracy, up to 3% FS, repeatability up to 2%; Wall-mounted waterproof Shell, easy to install, high protection level, can be used in harsh on-site environment.
SEM331 H2 Hydrogen sensor Adopt imported electrochemical sensors of major brands are used, which are stable and durable; Various measurement ranges are available, 0~1000ppm, 0~40000ppm; High measurement accuracy, up to 3% FS, repeatability up to 2%; Wall-mounted waterproof Shell, easy to install, high protection level, can be used in harsh on-site environment.
| Power supply | 10~30V DC | |
| Average power consumption | 0.9W | |
| Output signal | 485 output (standard Modbus protocol) | |
| Range | Temperature | -40℃~+80℃ |
| Humidity | 0~100%RH | |
| Hydrogen | 0~1000ppm、0~40000ppm | |
| Accuracy | Temperature | ±0.5℃（25℃） |
| Humidity | ±3%RH（60%RH,25℃） | |
| Hydrogen | ±3%FS | |
| Working temperature | -20~50℃ | |
| Working humidity | 15~95%RH non-condensing | |
| Working pressure | 90~110Kpa | |
| Stability | ≤2% signal value/year | |
| Repeatability | ≤2% | |
| Response time | 1000ppm：≤70S, 40000ppm：≤60S | |
| Warm-up time | ≥5 minutes | |
| Zero drift | 1000ppm：≤±10ppm, 40000ppm：≤±20ppm | |
| Service life | ≥24 months | |
| Resolution | 1ppm | |
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