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GPRS Wireless Water Meter
INTRODUCTION
The wireless AMR water meter(GPRS) belong to high-tech products in the smart water meter, using of advanced wireless transmission technology, it transforms metered information of conventional mechanical water meter into electrical signal have it stored by micro-electronics control circuit. It is able to automatically read the metering data via wireless remote network and is also able to transfer the data to the back-office system (data center) after reading the meters.
TECHNICAL DATA
1.Flow range
| Nominal diameter（mm） | Measuring range | Max flow Q4 | Nominal flow Q3 | Transitional flow Q22 | Min flowQ1 |
| m³/h | |||||
| 32 | R80 | 12.5 | 10 | 0.2 | 0.125 |
| 40 | R80 | 20 | 16 | 0.32 | 0.2 |
| 50 | R80 | 31.3 | 25 | 0.5 | 0.31 |
| 65 | R80 | 50 | 40 | 0.8 | 0.5 |
| 80 | R80 | 78.8 | 63 | 1.26 | 0.79 |
| 100 | R80 | 125 | 100 | 2 | 1.25 |
| 125 | R80 | 200 | 160 | 3.2 | 2 |
| 150 | R80 | 312 | 250 | 5 | 3.13 |
| 200 | R80 | 500 | 400 | 8 | 5 |
| 250 | R80 | 787 | 630 | 12.6 | 7.88 |
| 300 | R80 | 1250 | 1000 | 20 | 12.5 |
2. Relative error
The maximum allowable error is ±5% from the low flow area including the minimum flow rate to the demarcation flow rate (exclusive)
From high flow areas including demarcation flow to overload flow (inclusive) when the water temperature is ≤ 30°The maximum allowable error is ±2%;
when the water temperature>30°, the maximum allowable error±3%
3. Operating temperature: Cold water meter: (0.1 ~ 30) °C；Hot water meter: (0.1 ~ 90) °C
4. Working pressure：≤1.0MPa Pressure loss：≤0.063MPa
5. Installation Environment: Class B - Fixed Water Meter installed in indoor
6. Electromagnetic Environment: E1 - Residential, Commercial and Light Industry
7. Flow profile sensitivity level: U10, D5
FEATURE
1, Easy to build: no wiring required, easy to install and debug;
2, low construction cost: no wiring costs, use wireless network, signal stability, fast reading data;
3, long service life: low power design, real-time standby, battery life ≥ 3-4 years (upload data once a day)
APPLICATION
GPRS system is suitable for the installation of scattered environment, such as rural residential, factory, irrigation and other industries.
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