Product Overview
BBUWM-D uses transit-time ultrasonic measurement for water-consumption measurement, display, and remote management in DN15 drinking-water pipelines. It supports NB-IoT/CAT.1 communication, bidirectional measurement, low-power operation, and IP68 protection.
Key Features
- DN15 drinking-water metering
- Transit-time ultrasonic measurement
- NB-IoT/CAT.1 remote communication
- Forward and reverse flow measurement
- Accuracy Class 1
- IP68 protection
- Horizontal or vertical installation
- Optional leakage, burst-pipe, and scaling alarms
Technical Specifications
| Parameter | Specification |
|---|---|
| Nominal size | DN15 |
| Accumulated-volume resolution | 0.001 m³ |
| Current-flow resolution | 0.001 m³/h |
| Static operating current | ≤20 µA |
| Battery life | >6 years |
| Display | 8-digit LCD |
| Temperature class | T30 |
| Pressure class | MAP16 |
| Pressure-loss class | Δp40 |
| Protection rating | IP68 |
| Accuracy class | Class 1 |
| Electromagnetic environment | E2 |
| Environmental severity class | Class B, Class C |
| Installation | Horizontal or vertical |
| Flow-profile sensitivity | U5/D3 or U0/D0 |
| Reverse flow | Supported |
| Communication | NB-IoT/CAT.1 |
Flow Configuration
| Size | Permanent Flow Q3 | Overload Flow Q4 | Transitional Flow Q2 | Minimum Flow Q1 | Available R Values |
|---|---|---|---|---|---|
| DN15 | 2.5 m³/h | 1.25 × Q3 | 1.6 × Q1 | Q3/R | 125, 160, 200, 250, 315, 400, 500 |
Maximum Permissible Error
- Q1 to below Q2: ±5%
- Q2 to Q4: ±2%
Dimensions and Connections
| Parameter | Value |
|---|---|
| Length L | 165 mm |
| Width W | 98 mm |
| Height H | 84 mm |
| Weight | 1 kg |
| Meter-body thread | G3/4B |
| Meter-body thread length | 12 mm |
| Union length | 43 mm |
| Union thread | R1/2 |
| Union thread length | 15 mm |
Applicable Standards
- GB/T 778-2018
- JG/T 162-2009
- EN 13757 Wireless M-Bus