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| Brand | Annuo |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | DNS-4024 |
| Mixing Method | Dynamic Flow-Based Dilution |
| Instrument Type | Multi-Channel Dynamic Gas Dilutor |
| Dilution Ratio Range | 1:1 to 1000:1 (standard configuration |
| Dilution Accuracy | ±0.5% of reading or ±0.1% of full scale |
| Equilibration Time | 0.1–999 min |
| Input Channels | 2 (standard |
| Output Flow Rate | 0–5000 mL/min |
| Flow Accuracy | ±0.5% of reading or ±0.1% of full scale |
| Analytical Timing Range | 0.1–999 min |
| Max Power Consumption | 20 W |
| Dimensions | 320 × 260 × 150 mm |
| Power Supply | 24 V DC, 1 A |
| Weight | ~2 kg |
| Compatible Carrier Gases | Clean Air, N₂, He |
| Target Analytes | CH₄, CO, CO₂, VOCs (e.g., halogenated hydrocarbons, BTEX), H₂S, other sulfur compounds, NOₓ |
| Concentration Range Supported | 10 ppb – 10,000 ppm |
| 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 |
| Brand | Annuo |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | DNM-4024 |
| Mixing Method | Dynamic Flow-Based Dilution |
| Instrument Type | Constant-Volume Dilutor |
| Dilution Ratio Range | 1:1 to 3000:1 (configurable or custom-expandable) |
| Dilution Accuracy | ±0.5% of reading or ±0.1% of full scale |
| Equilibration Time | 2–30 minutes |
| Operating Temperature | 10–35 °C (recommended at 25 °C) |
| Operating Humidity | 10–90% RH (non-condensing) |
| Input Gas Channels | 2 (standard, expandable) |
| Output Flow Rate | 0–500 mL/min |
| Output Volume Range | 0–999 L |
| Flow Measurement Range | 0–1000 mL |
| Flow Accuracy | ±0.5% of reading or ±0.1% of full scale |
| Power Supply | 24 V DC, 1 A |
| Max Power Consumption | 20 W |
| Dimensions (W×D×H) | 260 × 160 × 90 mm |
| Weight | ~1 kg |
| Applicable Gases | CH₄, CO, CO₂, volatile halogenated hydrocarbons, BTEX, sulfur compounds (e.g., H₂S, methanethiol), NOₓ, and other VOCs |
| Diluent Gases | Clean air, N₂, He |
| Compliance Standards | GB/T 14678–1993, HJ 1078–2019 |
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