Digital water meter BBUWM-D

ultrasonicresidentialsmart

Product Overview
BBUWM-D is a DN15 transit-time ultrasonic drinking-water meter designed for accurate water-consumption measurement, local display and remote management in potable-water pipelines. It supports NB-IoT/CAT.1 communication, bidirectional (forward and reverse) 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

• Model — BBUWM-D
• Nominal size — DN15
• Measurement method — Transit-time ultrasonic
• Communication — NB-IoT/CAT.1
• Bidirectional measurement — Yes (forward and reverse)
• Accuracy class — Class 1
• Protection rating — IP68
• 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
• 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

Flow Configuration

• DN15 — Permanent Flow Q3: 2.5 m³/h; Overload Flow Q4: 1.25 × Q3; Transitional Flow Q2: 1.6 × Q1; Minimum Flow Q1: Q3/R; Available R values: 125, 160, 200, 250, 315, 400, 500

Maximum Permissible Error

• From Q1 to below Q2: ±5%
• From Q2 to Q4: ±2%

Dimensions and Connections

• Length (L) — 165 mm
• Width (W) — 98 mm
• Height (H) — 84 mm
• Weight — 1 kg
• Meter-body thread — G3/4B (length 12 mm)
• Union — length 43 mm; thread R1/2 (length 15 mm)

Applicable Standards

• GB/T 778-2018
• JG/T 162-2009
• EN 13757 Wireless M-Bus

Characteristics / Technical Data

• Model: BBUWM-D
• Nominal size: DN15
• Measurement: Transit-time ultrasonic
• Communication: NB-IoT/CAT.1
• Bidirectional: Yes
• Accuracy class: Class 1
• Protection: IP68
• Battery life: >6 years
• Display: 8-digit LCD
• Dimensions (L×W×H): 165 mm × 98 mm × 84 mm
• Weight: 1 kg