Overview
BWM1200 is a smart water meter based on Woltman /tangential dry-type water meter. Its meter reading is transferred via pulse output cable and connected with smart module for wireless remote reading.
Features
· The transmission module and base meter are separately installed for easy replacement. The power supply battery of the Woltman bulk water meter is independently packaged for convenient replacement.
· Using the latest data transmission technology, flexible connectivity options include NB-IoT, Cat1, LoRa, LoRaWAN, RS485, M-Bus and M-Bus wireless.
· The transmission position is 1L.
·The base meter adopts an independent function pointer; after installing the electronic module, it doesn't affect any readings.
· The lifetime is up to 10 years.
Dimensions
| Nominal Diameter |
Length L (mm) |
Height H (mm) |
Flange Diameter |
Bolt Circle Diameter |
Flange Hole |
| DN50 | 200 | 209.5 | 165 | 125 | 4-M16 |
| DN65 | 200 | 219.5 | 185 | 145 | 4-M16 |
| DN80 | 225 | 278.8 | 200 | 160 | 8-M16 |
| DN100 | 250 | 288.8 | 220 | 180 | 8-M16 |
| DN125 | 250 | 298.8 | 250 | 210 | 8-M16 |
| DN150 | 300 | 318.8 | 285 | 240 | 8-M20 |
| DN200 | 350 | 345.8 | 340 | 295 | 8-M20(1.0MPa) 12-M20(1.6MPa) |
| DN250 | 450 | 452.3 | 395(1.0MPa) 405(1.6MPa) |
350(1.0MPa) 355(1.6MPa) |
12-M20(1.0MPa) 12-M24(1.6MPa) |
| DN300 | 500 | 479.8 | 445(1.0MPa) 460(1.6MPa) |
400(1.0MPa) 410(1.6MPa) |
12-M20(1.0MPa) 12-M24(1.6MPa) |
Meter Sizes
| Performance | Parameters | ||||||
| Nominal Diameter |
Q3/Q1 | Minimum Flow Rate Q1 (m³/h) |
Transition Flow Rate Q2 (m³/h) |
Permanent Flow Rate Q3 (m³/h) |
Overload Flow Rate Q4 (m³/h) |
Minimum Reading(m³) |
Maximum Reading(m³) |
| DN50 | R80 | 0.5 | 0.8 | 40 | 50 | 0.0005 | 999999.999 |
| DN65 | R80 | 0.5 | 0.8 | 40 | 50 | 0.0005 | 999999.999 |
| DN80 | R80 | 0.7875 | 1.26 | 63 | 78.75 | 0.001 | 999999.999 |
| DN100 | R80 | 1.25 | 2 | 100 | 125 | 0.001 | 999999.999 |
| DN125 | R80 | 2 | 3.2 | 160 | 200 | 0.001 | 999999.999 |
| DN150 | R80 | 3.125 | 5 | 250 | 312.5 | 0.001 | 999999.999 |
| DN200 | R80 | 5 | 8 | 400 | 500 | 0.001 | 999999.999 |
| DN250 | R80 | 7.875 | 12.6 | 630 | 787.5 | 0.01 | 999999.999 |
| DN300 | R80 | 12.5 | 20 | 1000 | 12500 | 0.01 | 999999.999 |
Meter Sizes
| Type | Woltman |
| Body Material | Ductile Iron |
| Accuracy Class | 2 |
| Q3/Q1 | R80 |
| Communication Port | Pulse/NB-IoT/LoRa/LoRaWAN/M-Bus/RS485 |
| Installation Mode | Horizontal Installation |
| Temperature Class | T30/T50 |
| Pressure Rating | MAP16 |
| Electromagnetic Ambient Condition | E1 |
| Protection Class | IP68 |
| Battery Life | 10 years |
