Lorawan/ Lora/ M-Bus Smart Ultrasonic Water Meter R250
Smart ultrasonic water meter measurement of water consumption in households, apartment buildings and small commercial properties.
Specification
| Meter Type | Ultrasonic Water Meter |
| Nominal Diameter (mm) | DN15~DN20 |
| Q3/Q1 | R250 |
| Measured medium | Water, homogeneous liquid, and filled with measured pipes. |
| Accuracy class | Class 2 |
| Water pressure class | 1.6MAP (16 bar) |
| Pressure-loss class | Δρ40 |
| Temperature class | T50 |
| Installation position | H/V |
| The installation sensitivity class | U10/D5 |
| Electromagnetic class | E1 |
| Environmental class | C |
| Key-press | Magnetic induction key |
| Types of Indicating device | LCD:9-digits, 099999.9999m² |
| Menu Contents | Instantaneous flow (m3/h), cumulative flow (m3), screen detection, table address, cumulative working time (h), date (year/month/day), caliber, software version |
| Communication Interface | Photoelectric |
| Power Source | Lithium battery ER26500 (replaceable) |
| Battery Voltage &Capacity | 3.6V, 8500mAh |
| Life span | 10 years. |
| IP code | IP68 |
| Storage Temperature | -25°C~+55°C |
| Cable length | 1.0 m |
| Water temperature | 0~50ºC |
| Water pressure | ≤16 Bar |
Flow Rate
| Parameter | Data value – DN15 | Data value – DN20 |
| Nominal Diameter | DN15 | DN20 |
| Start flow rate | 0.003 | 0.005 |
| Qmin (Q1) | 0.010 | 0.016 |
| QTransitional (Q2) (m3/h) | 0.016 | 0.0256 |
| Qmax/ permanent (Q3) | 2.5 | 4.0 |
| Qoverload (Q4) | 3.125 | 5.0 |
| Range ratio = Q3/Q1 | 250 | 250 |
| Temperature | T50 | T50 |
| Battery life (Year) | >10 | >10 |
Dimension
| Nominal Diameter (mm) | DN15 | DN20 |
| Thread | G3/4B | G1B |
| L (mm) | 110 | 130 |
| H (mm) | 80 | 80 |
| W (mm) | 85 | 85 |
