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| Brand | CUBIC INSTRUMENTS |
|---|---|
| Origin | Hubei, China |
| Model | Gasboard-3902 |
| Measurement Principle | Non-Dispersive Infrared (NDIR) |
| Response Time | <30 min |
| Measurement Range | 0–100 ppm |
| Detection Limit | 1 ppm |
| Linearity Error | ≤±2% F.S. |
| Repeatability | ≤±1% |
| Preheat Time | <30 min |
| Operating Temperature | 5–40 °C |
| Relative Humidity | 0–95% RH (non-condensing) |
| Atmospheric Pressure | 86–115 kPa |
| Sample Flow Rate | 2–5 L/min |
| Power Supply | Built-in Li-ion battery |
| Power Consumption | <80 W |
| Communication Interface | RS-485 (Modbus RTU) / RS-232 |
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