Product Overview
BBUWM-I is a flanged multi-path ultrasonic water meter for large pipelines and demanding environments. Its transit-time measurement system has no mechanical measuring element. The meter displays accumulated flow, instantaneous flow, pressure, flow direction, and operating status, and supports remote meter reading and data management.
Sizes from DN50 to DN500 are available. The standard body material is SS304, with SS316 and SS316L options. Communication interfaces include RS485/Modbus, M-Bus, NB-IoT/CAT.1, pulse, 4–20 mA, GPRS, and BACnet.
Key Features
- Multi-path ultrasonic measurement
- DN50 to DN500 flanged construction
- R500 measuring range
- Bidirectional measurement
- IP68 protection
- Low pressure loss
- Accuracy Class 2 with Class 1 option
- Battery life up to 10 years
- 750-day and 72-month data records
- Multiple wired and wireless communication options
Technical Specifications
| Parameter | Specification |
|---|---|
| Nominal size | DN50 to DN500 |
| Maximum operating pressure | 1.6 MPa |
| Temperature class | T30, T50; T70 and T90 high-temperature versions |
| Accuracy class | Class 2; Class 1 optional |
| Material | SS304; optional SS316 or SS316L |
| Battery life | 10 years |
| Protection rating | IP68 |
| Ambient temperature | -40 to +70 °C |
| Ambient humidity | ≤100% RH |
| Pressure-loss class | Δp0, Δp16, Δp25 |
| Climatic and mechanical class | Class C |
| Electromagnetic environment | E2 |
| Flow-profile sensitivity | U5/D3 or U0/D0 |
| Measurement frequency | Adaptive, 1–4 measurements/s |
| Connection | Flanged, GB/T 9119-2010 |
| Display | 9-digit dual-line LCD with status indicators |
Outputs and Communication
- RS485 / Modbus-RTU
- M-Bus
- NB-IoT/CAT.1
- Pulse output
- 4–20 mA
- GPRS
- BACnet
- EN 13757 optical interface at 2400 bps
RS485 baud rates of 2400, 4800, and 9600 bps are available; the default is 2400 bps.
Flow Specifications
| DN | Starting Flow Qstart | Minimum Flow Q1 | Transitional Flow Q2 | Permanent Flow Q3 | Overload Flow Q4 | R |
|---|---|---|---|---|---|---|
| 50 | 13 L/h | 0.08 m³/h | 0.13 m³/h | 40 m³/h | 50 m³/h | 500 |
| 65 | 23 L/h | 0.126 m³/h | 0.20 m³/h | 63 m³/h | 78.75 m³/h | 500 |
| 80 | 34 L/h | 0.126 m³/h | 0.20 m³/h | 63 m³/h | 78.75 m³/h | 500 |
| 100 | 54 L/h | 0.20 m³/h | 0.32 m³/h | 100 m³/h | 125 m³/h | 500 |
| 125 | 84 L/h | 0.32 m³/h | 0.51 m³/h | 160 m³/h | 200 m³/h | 500 |
| 150 | 121 L/h | 0.50 m³/h | 0.80 m³/h | 250 m³/h | 312.5 m³/h | 500 |
| 200 | 215 L/h | 0.80 m³/h | 1.28 m³/h | 400 m³/h | 500 m³/h | 500 |
| 250 | 336 L/h | 2.00 m³/h | 3.20 m³/h | 1000 m³/h | 1250 m³/h | 500 |
| 300 | 483 L/h | 2.00 m³/h | 3.20 m³/h | 1000 m³/h | 1250 m³/h | 500 |
| 400 | 859 L/h | 3.20 m³/h | 5.12 m³/h | 1600 m³/h | 2000 m³/h | 500 |
| 500 | 1343 L/h | 5.00 m³/h | 8.00 m³/h | 2500 m³/h | 3125 m³/h | 500 |
Dimensions and Weight
| DN | L | B | H | Bolt Holes | K | Pressure | SS Weight |
|---|---|---|---|---|---|---|---|
| 50 | 200 mm | 165 mm | 257 mm | 18 × 4 | 125 mm | 1.6 MPa | 9.52 kg |
| 65 | 200 mm | 177 mm | 277 mm | 18 × 4 | 145 mm | 1.6 MPa | 11.6 kg |
| 80 | 225 mm | 200 mm | 297 mm | 18 × 8 | 160 mm | 1.6 MPa | 14.1 kg |
| 100 | 250 mm | 220 mm | 314 mm | 18 × 8 | 180 mm | 1.6 MPa | 17.1 kg |
| 150 | 300 mm | 285 mm | 373 mm | 22 × 8 | 240 mm | 1.6 MPa | 26.98 kg |
| 200 | 350 mm | 340 mm | 431 mm | 22 × 8 | 295 mm | 1.6 MPa | 37.9 kg |
| 250 | 450 mm | 395 mm | 500 mm | 22 × 12 | 350 mm | 1.6 MPa | 41.7 kg |
| 300 | 500 mm | 445 mm | 552 mm | 22 × 12 | 400 mm | 1.6 MPa | 49.7 kg |
Data Storage
- Latest 7 × 24 hours
- 750 daily records
- 72 monthly records
- Permanent retention after power loss
Applicable Standards
- GB/T 778-2018
- ISO 4064
- OIML R49
- AWWA C750-10