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The QWM11 integrated prepaid smart water meter is available in DN15, DN20, and DN25 sizes. Designed with low power consumption for extended service life, this all-in-one wireless meter offers stable remote data transmission and great compatibility for residential water supply management.
Certified Metrology Standards: Fully compliant with ISO 4064:2005 and IEC 62055 international metering protocols, delivering highly stable Class B measurement accuracy across wide working pressures (0.03MPa to 1.0MPa).
Active Valve Self-Preservation: Programmed with an integrated hardware maintenance algorithm that automatically triggers a full open/close valve sequence every 15 days to eliminate calcification lockups.
Low-Power Battery Logistics: Equipped with internal low-power circuits that constantly monitor battery voltage levels; the integrated valve isolates immediately if the system detects energy drops (≤3.0V) to secure final billing states.
1. Prepayment function: purchase first, water consumption next.
2. Multi-tariff function (optional): two optional multi-tariff billing modes, by the unit of water amount or monetary currency.
3. Checking function: the status and historical consumption information can be read.
4. Alarming function: alarm users to purchase water in time, as the valve will be closed when the residual water is insufficient.
5. Hoarding limit function: program the hoarding limit to prevent malicious hoarding.
6. Valve self-maintenance function: the meter will open and close the valve automatically once every 15 days.
7. Battery self-maintenance function: the battery will be activated at least once every 7 days.
8. Battery low voltage detection: low voltage detection device is fixed inside; if low power <= 3.0V, then close the valve, and the battery symbol will display on the LCD.
9. Low power consumption circuit, long battery life with battery voltage measurable.
10. Long-distance wireless transmission, high rate of success.
11. Remote auto valve control for meters with value control function.
12. Networking and data repeater function on each meter, expands the wireless reading range.
13. Monthly and accumulated water consumption data can be read to meet various management requirements.
14. Wireless parameters, meter address, and base register can be registered and programmed through special equipment; easy installation, configuration and management.
15. Flexible and efficient hand-held wireless reading modes: single reading mode and batch reading mode.
| Specifications | QWM11 |
| Standards | ISO 4064:2005,IEC62055 |
| Dimesion (mm ) | 165X90X128 or 195X90X128 or 225X90X128 |
| Minmium Flow(Q1)(Lh) | 30 or 50 or 70 |
| Transitional Flow(O2)(L/h | 50 or 80 or 120 |
| Permanent Flow(Q3)m /h | 2.5 or 4.0 or 6.3 |
| Basic Current(lb) | 3X5A,3X10A |
| Maximum Current(lmax) | 3X40A,3X60A,3X80A |
| Overload Flow(Q4)m /h | 3 or 5 or 7 |
| DN(mm) | 15 or20 or25 |
| Connection Thread | G3/4B or G1B or G11/4B |
| Accuracy | Class B |
| Installation Method | Horizontal |
| Display | Horizontal |
| Working Pressure | 0.03MPa...1.0MPa，P63 |
| WORKING CONDITIONS | Normal clear water 0.1C.....30C |
| Weight | 1.63kg/1.73kg |
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