Willfar Information Technology Co. Ltd.
Stock Code: 688100.SH The Pioneer in Smart Utility Service and IoT Solutions
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STS Prepaid Wireless Smart Cold Water Meter WMFK-P300 with Valve Control Unit
Company Profile
Willfar Information Technology Co., Ltd.
- Established in 2004;
- Listed on the STAR Market of the Shanghai Stock Exchange in December 2019;
- Leading supplier of meter reading (AMI) equipment and operation service;
- The first company to develop "One DCU Reading Multi-meter" solution in China;
- The first company to have large-scale application of technologies and systems like "CPU smart-card Charge and Control", "One DCU Reading Multi-meter", LoRa-based RF Communication and "District Metering Area (DMA)”
Introduction
1. The WMFK-P300 which consists of User Interface Unit (UIU) , wireless valve control unit(VCU) and water meter.
2. The water meter is a rotary piston water meter designed for measuring flows of cold potable water. It is a high reliable measurement instrument, which is comply with OIMLR49/ISO4064/EN14154 standards. It is an ideal product that can be used in residential area.
3. Accuracy class of water meter exceeds Class C(R160), Material of body is engineering plastic .
4. The UIU acts as a remote display and keypad for water meter, and it could be connected with meter by RF interface .
5. The prepayment module of VCU conform to the STS standard IEC62055-41
Technical Parameters
| Item | Parameter | |||
| Meter Type | Volumetric | |||
| Nominal diameter(mm) | 15 | 20 | ||
| Valve length(mm) | 80 | |||
| Meter length(mm) | 110 | 130 | ||
| Permanent flowrate Q3(m3/h) | 2.5 | 2.5 | 4 | |
| Q3/Q1 | R160 | |||
| Accuracy class | Class 2 | |||
| Error | Q1≤Q＜Q2 | 5% | ||
| Q2≤Q≤Q4 | 2% | |||
| Types of Indicating device | combination of analogue and digital devices | |||
| Indicating range | 0~99999.99995 | |||
| Temperature class | T30 | |||
| Water pressure class | MAP10(10bar),MAP 16(16bar) | |||
| Pressure-loss class | Δp63(0.63bar) | |||
| Installation position | H,V | |||
| The installation sensitivity class | U0/D0 | |||
| Electromagnetic and Environmental class | E1,B | |||
| Battery life-time | ≥5 years(typical) | |||
| Radio Frequency Band | (433~435)MHz,(470~510)MHz | |||
| Maximum Transmit Power | 50mW,100mW | |||
| Valve life-time | ≥7000 times(typical) | |||
| Work Environment | 0.1℃~50℃,≤93%RH | |||
| IP code | IP68 | |||
Certificate
OIMLR49/ISO4064/EN14154/STS IEC62055-41
Features
1. Separation design of water meter and control valve , which can be installed H/V and can be used independently.
2. Separation design of water meter and UIU,
3. the water meter can be installed in a place where you can't touch it .
4. IP68 protection
Basic Functions
Situations
Residential and commercial
Dimensions
| Nominal size(mm) | L1(mm) | L2(mm) | H(mm) | W(mm) |
| 15 | 195 | 215 | 151 | 110 |
| 20 | 215 | 235 | 151 | 110 |