| Parameter | Specification |
| Measurement Range | SO₂: 0–20/200 μmol/mol; NOx: 0–20/200 μmol/mol (optional); O₂: 0–25% |
| Accuracy | ≤ ±1% F.S |
| Zero Drift | ≤ ±1% F.S / 7d |
| Span Drift | ≤ ±1% F.S / 7d |
| Sample Flow | 1.5 L/min ±0.5 L/min |
| Response Time | T90 ≤20 s |
| Gas Cell Pressure | ≤ 20 KPa |
| Contact Capacity | 120 VAC,1A; 24 VDC,1A |
| Output Signal | 4–20 mA or 0–10 mA DC |
| Preheat Time | ≤30 min |
| Operating Temperature | -5℃ ~ +45℃ |
| Humidity | ≤90% RH |
| Power Supply | 220 VAC ±10%, 50Hz ±5% |
| Pollutant | Measurement Method | Range | Zero Drift | Span Drift | Linearity Error | Output Signal |
| SO₂ | DOAS | 0–20/200 μmol/mol | ±1%FS/7d | ±1%FS/7d | ≤ ±1%FS | RS-232/485, 4–20mA |
| NOx | DOAS | 0–20/200 μmol/mol | ±1%FS/7d | ±1%FS/7d | - | RS-232/485, 4–20mA |
| CO | NDIR | 0–2000 μmol/mol | ±1%FS/7d | ±1%FS/7d | - | RS-232/485, 4–20mA |
| O₂ | Electrochemical / Magnetic Pressure | 0–25% | ±1%FS/7d | ±1%FS/7d | - | RS-232/485, 4–20mA |
| Particulate Matter | Laser Forward Scattering | 0–5/200 mg/m³ | ±2%FS/7d | ±2%FS/7d | ≤ ±3%FS | 4–20 mA |
| Flow | Differential Pressure Sensor | 0–40 m/s | ±5%FS/7d | ±5%FS/7d | ≤ ±1%FS | 4–20 mA |
| Pressure | Differential Pressure Sensor | 60–140 KPa | ±2%FS/7d | ±2%FS/7d | ≤ ±1%FS | 4–20 mA |
| Temperature | Thermocouple | 0–500℃ | ±1%FS/7d | ±1%FS/7d | ≤ ±1%FS | 4–20 mA |
| Humidity | Capacitive | 0–100% | ±2%FS/7d | ±2%FS/7d | ≤ ±1.5%FS | 4–20 mA |
| Feature | TR-9300D | Conventional Systems |
| Measurement Accuracy | High Precision | Moderate |
| Gas Interference Resistance | Excellent | Limited |
| Zero Drift | Minimal | Significant |
| Automation | PLC-Controlled | Manual / Semi-Automatic |
| Maintenance | Low Workload | Higher Workload |
| Detection Limit | Ultra-Low | Higher |
| Data Acquisition | High Precision | Basic |
| System Modularity | Flexible | Fixed |

