Overview
The U-WR2 ultrasonic water meter combines a rugged composite body with high‑performance IoT modules. Its solid‑state design has no moving parts, which prevents wear and maintains long‑term accuracy. With built‑in wireless communication and smart data processing as standard, it delivers reliable performance for up to 12 years. This translates into significant cost savings on both initial purchase and ongoing maintenance for water utilities, engineering firms, and large‑volume buyers.

Main Features
1. IP68 Waterproof & Dustproof, U0/D0 Integrated Design
2. WRAS, OIML & MID B+D Certified with Complete Water Quality Test Report
3. Multiple Communication Interfaces & Flexible Installation in Any Position
4. Flow Partition Metering & Statistics with Minimal Pressure Loss
5. Wide Dynamic Range (R800/R500), Leakage Detection & Non-air Measuring
6. Reliable Data Reissue & Retransmission Mechanism
7. No Moving Parts, Designed Service Life ≥12 Years
8. Compact & Robust Structure with Eco-friendly Durable Composite Material
9. Strong Anti-interference, Immune to Media & External Magnetic Fields

Technical Parameters
| Type | U-WR2 | |||
| Size | DN15 | DN20 | DN25 | |
| Range and Capacities | ||||
| Q3 | 1.6/2.5 m³/h | 2.5/4.0 m³/h | 6.3 m³/h | |
| Q4 | 3.125 m³/h | 5.0 m³/h | 7.875 m³/h | |
| Q2 | 8 L/h | 12.8 L/h | 20.2 L/h | |
| Q1 | 5 L/h | 8 L/h | 12.6 L/h | |
| Qstart | 2L/h | |||
| Dynamic Range | R250/R400/R500/R800 | |||
| Standard | ISO4064:2014/ OIML: R49-2013 | |||
| Electrical | ||||
| Battery | 3.6V, Li-battery | |||
| EMC | E1 | |||
| Mechanical | ||||
| Environmental Classification | Class O | |||
| Protection Class | IP68 | |||
| Medium Temperature | 0.1~50℃(T50) | |||
| Storage Temperature | -25~60℃ | |||
| MAP | 1.6MPa | |||
| Metrological | ||||
| Accuracy |
±5% in range Q1≤Q<Q2 ±2% in range Q2≤Q≤Q4 |
|||
| Head Loss | 0.4bar @ Q3 | 0.25bar @ Q3 | 0.4bar @ Q3 | |
| Communication | ||||
| LoRa RF | LoRaWAN Class A | |||
| NB-IoT | Standard | |||
| Pulse Output | Customized | |||
| M-Bus/wM-Bus | Standard | |||
Dimension

Why Choose Us
1. Extensive Industry Expertise:
VIEWSHINE has built a strong reputation in ultrasonic metering, backed by years of hands‑on experience and a clear view of shifting market demands. This allows us to develop adaptive, application‑focused solutions that perform in real‑world conditions.
2. Skilled Professionals:
Our engineering and quality assurance professionals bring deep technical knowledge and meticulous attention to detail. Every product is subject to rigorous testing and process control - ensuring dependability that consistently meets or exceeds client expectations.
3. Exceptional Customer Care:
We prioritize customer satisfaction and strive to provide exceptional support throughout your journey with us. Our dedicated support team is readily available to address any inquiries or concerns, ensuring a smooth and positive post-purchase experience.
4. Competitive Pricing:
As a factory‑direct supplier, we keep our pricing fair and transparent while upholding strict quality standards. By integrating lean production with efficient workflow management, we deliver cost‑effective metering solutions that offer lasting value without compromise.
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