| Parameter | Specification |
| Model | QCD-3000P |
| Sampling Type | Toxic Gas / Dust |
| Flow Range (optional) | 0.1–1.5 L/min (QCD-1500P) |
| Flow Range (optional) | 0.1–3.0 L/min (JP-3000) |
| Flow Accuracy | ±5% of reading |
| Timing Range | 1 min – 99 h 59 min |
| Timer Accuracy | ±1‰ |
| Max Negative Pressure | 26,000 Pa |
| Charging Current | 300 mA |
| Battery Type | NiMH Rechargeable |
| Continuous Operation | ~12 hours |
| Power Supply | DC 8.4V / AC 220V 50Hz |
| Operating Temperature | -25°C to 45°C |
| Relative Humidity | ≤85% RH |
| Noise | ≤55 dB |
| Housing | ABS Plastic |
| Dimensions | 100 × 50 × 110 mm |
| Feature | QCD-3000P | Standard Air Sampler |
| Sampling Function | Gas + Dust | Single Function |
| Control | Microcomputer | Mechanical |
| Timer | Up to 99h59min | Shorter |
| Time-Weighted Sampling | Supported | Often Not Supported |
| Battery Life | ~12 hours | 4–8 hours |
| Anti-Backflow | Yes | No / Simple Design |
| Power Supply | AC/DC Dual | Single Power |
| Noise Level | ≤55 dB | Higher |
| Portability | High | Moderate |
| Applicable Fields | Occupational health, environment, research | Basic sampling |
