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| Brand | Annuo |
|---|---|
| Origin | Henan, China |
| Model | THB-8021 |
| Instrument Type | Portable |
| Detection Principle | Gas Chromatography with Flame Ionization Detection (GC-FID) |
| Measurement Range | 1.0–50,000 ppm (as methane or propane equivalent) |
| Detection Limit | 0.5 ppm (FID, ethane |
| Repeatability | ±2% at 100 ppm methane (FID) |
| Accuracy | ±10% of reading or ±1.0 ppm (FID, whichever is greater) |
| Response Time (FID) | ≤3.5 s to 90% of final value (10,000 ppm CH₄) |
| Recovery Time (FID) | ≤4.5 s to within 10% of baseline (10,000 ppm CH₄) |
| Dynamic & Linear Range (FID) | 1.0–50,000 ppm |
| Detector Lifetime (FID) | >5,000 h (with routine maintenance) |
| Power Supply | Internal rechargeable battery (10 h operation, 4 h charge) |
| Dimensions | 219 × 260 × 70 mm |
| Weight | 4.1 kg |
| Operating Temperature | −10 to +50 °C |
| Data Output | USB (TXT format), Bluetooth, optional 4G/GPS |
| Intrinsic Safety | Certified for Class I, Division 1 hazardous areas (per IECEx/ATEX standards) |
| Compliance | Designed to support LDAR (Leak Detection and Repair) programs per US EPA Method 21, ASTM D6420, and ISO 16000-29 |
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