technical parameter
| cal | DN15~25 |
| Range ratio=（Q3/Q1） | R80~160 |
| Maximum allowable error | Q3 ±2%, Q2 ±2%, Q1 ±5% |
| Accuracy grade | Class B |
| Working pressure | ≤1.6Mpa |
| Pressure loss | ≤0.1Mpa |
| Level of protection | IP65 |
| Working water temperature | 0~90℃ |
| Communication mode | Lorawan / NB / GPRS / RS485 |
| Power supply 3.0 V | 3.0V |
