| Measure method | potassium dichromateHigh temperature digestion method |
| Monitoring element | CODcr |
| Measure range | 0~2000mg/L |
| Value error | ±5% |
| repeatability | ±5% |
| Zero drift | ±3mg/L |
| Measure range drift | ±5% |
| Minimum measurement period | 30min |
| MTBF | ≥1440hours/time |
| Output port | RS-232, RS-485, 4-20mA |
| Power supply | AC220V±10%, 50Hz±10%, 1A |
| Working temperature | 4℃~45℃ |