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| Brand | Kechuang |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GC9800N/TFH |
| Detection Targets | Trace impurities in high-purity helium (Ne, O₂, N₂, H₂, CO₂, CH₄), hydrogen, nitrogen, and carbon dioxide |
| Detectors | TCD (TC-1H) + FID + Ni methanizer |
| Minimum Detectable Concentration | Ne: 0.18 ppb v/v, O₂: 0.09 ppb v/v, N₂: 0.08 ppb v/v |
| Temperature Range | 8 °C above ambient to 400 °C |
| Temperature Control Accuracy | ±0.5% |
| Programmable Temperature Ramping | 8-step, 0–39 °C/min (0.1 °C/min increment) |
| Baseline Noise | ≤0.01 mV |
| Baseline Drift | ≤0.1 mV/30 min |
| Linear Range | 10⁵ |
| Column Oven | Motorized auto-back-opening, near-ambient operation (≥8 °C above ambient) |
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