Primarily used in residential complexes, commercial buildings, and aging pipeline upgrades, it replaces clog-prone mechanical water meters, adapts to complex water quality (including sediment and rust), and demonstrates superior long-term stability compared to conventional meters. Featuring an 11-digit, multi-line LCD display for clear visualization of total volume and instantaneous flow, it supports automatic meter reading and is compatible with infrared, NFC, wM-Bus, NB-IoT and LoRaWAN communication technologies, enabling remote monitoring and management .
Dimension
| Parameter | DN15 | DN20 | DN25 |
| Nominal Diameter (mm) | DN15 | DN20 | DN25 |
| Length (L1, mm) | 150 | 150 | 150 |
| Length (L, mm) | 165 | 190 | 225 |
| Height (H, mm) | 94 | 98 | 103 |
| Width (W, mm) | 94 | 94 | 94 |
| Connection thread on meter | G3/4B | G1B | G1 1/4B |
| Connection thread of coupling | R1/2B | R3/4B | R1B |
Technical Specifications
| Item | Specification | |||||
| Product Name | Wide Range Valve-controlled Ultrasonic Water Meter | |||||
| Accuracy Class | Class 2 | |||||
| Nominal Diameter (mm) | 15 | 20 | 25 | |||
| Dynamic Range | 600 | 800 | 600 | 800 | 600 | 800 |
| Overload Flowrate Q4 (m³/h) | 3.125 | 5 | 7.875 | |||
| Permanent Flowrate Q3 (m³/h) | 2.5 | 4 | 6.3 | |||
| Transitional Flowrate Q2 (m³/h) | 0.0067 | 0.005 | 0.01 | 0.008 | 0.0168 | 0.0126 |
| Minimum Flowrate Q1 (m³/h) | 0.0042 | 0.0031 | 0.0067 | 0.005 | 0.0105 | 0.07875 |
| Maximum Working Pressure (MPa) | 1.6 MPa | |||||
| Pressure Loss (KPa) | △P63 △P40 | |||||
| Data Communication | NFC / NB-IoT / wM-BUS / LoRaWAN | |||||
| Protection Class | IP68 | |||||
| Temperature Class | T70 | |||||
| Category of Climate & Mechanical Environment Conditions | Class O | |||||
| Class of Electromagnetic Compatibility | E2 | |||||
| Installation Position | Any orientation, U0D0 | |||||
| Display Indication | LCD, 11 digits + prompting characters | |||||
| Display Range | −999999.999 m³ to 999999.999 m³ | |||||
| Display Resolution | Cumulative flowrate: 0.001 m³; Instantaneous flowrate: 0.001 m³/h; Water temperature: 0.01 ℃ | |||||
| Battery Life | 15 years | |||||
| Valve Controllable Physical Angles | 0° / 25° / 50° / 75° / 100° | |||||
| Data Records | Hourly freeze, daily freeze, monthly freeze, yearly freeze, real-time data | |||||
| Alarm Records | Cover opening alarm, overcurrent alarm, empty pipe alarm, leakage alarm, battery low voltage alarm | |||||
Wide Range Valve-controlled Ultrasonic Water Meter Technical Advantages
- Ultra-Wide Dynamic Range: R800 flow range ratio achieves droplevel measurement accuracy, with ≤±2% error in low-flow detection.
- Dual-Power Supply Design: Separate power modules for metering and functional circuits ensure dual protection for measurement precision and system stability, effectively suppressing common-mode interference to guarantee long-term data reliability.
- Intelligent Sensing System: Built-in high-precision pressure sensors monitor pipeline pressure in real time, paired with a patented temperature compensation algorithm for dynamic calibration without additional sensors.
- Precise Valve Control: Supports remote adjustment of physical valve opening (5 adjustable positions: 0°, 25°, 50°, 75°, 100°).
- Omni-Directional Installation: U0D0 design eliminates straight pipe requirements, allowing horizontal/vertical installation without compromising accuracy.
- Data Storage Security: Power-cut protection ensures storage of hourly/daily/monthly/annual records, with data retention >15 years.
- Bidirectional Flow Measurement: Independently measures forward/reverse flow, with real-time flow direction display.
- Military-Grade Protection: IP68 rating with triple rubber sealing + full potting technology, ensuring zero leakage.
- Long-Life Design: No moving mechanical parts; built-in lithium-manganese battery reduces self-discharge (<1%/year), with theoretical lifespan ≥15 years.
- High-Temperature Adaptability: T70 rating guarantees stable operation at 70°C
- Alarms: Covering open cover alarm, Overcurrent alarm, Empty pipe alarm, Leakage alarm, Battery low voltage alarm, Overtemperature alarm, Overvoltage alarm.
- Errors: Including magnetic tampering, Physical tampering, Network tampering, Valve failure.
- Display: Water flow direction, Date and time, Signal value, GPS location, NFC enablement status,Storage mode/Verification mode/Factory mode,Valve opening degree, Battery level, Temperature,Pressure value.
- wM-Bus：433 or 868 MHz OMS T1;
- NB loT;
- LoRaWAN ：EU863-870, AS923, AU915-928,US902-928, IN865-867 channel plans;
- Instrumentation Parameterization：Direct acquisition of meter end information via NFC or infrared interface
- M ID(2014/32/EU)
- OIML R49
- OMS compliance certificate
- WRAS(UK)
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