1.Product introduction
The electronic water meter is mainly used to measure the total volume of water flowing through the water pipe, which is suitable for home, apartment, office building and etc.Its built-in M-BUS remote controller achieves remote meter reading through the data communication. The user pay water rates and the management department will record the purchasing amount of water in the database. Then the water meter will supply water automatically. "Remote meter reading system" will reduce the remaining amount automatically. When the remaining amount is insufficient, it will remind customers to buy water.
2.Main features
1. In line with the requirements of GB / T 778.1 ~ 3-2007 measurement grade standard (equivalent to international standard ISO 4064-1 ~ 3: 2005.IDT);
2. Electronic device accords with CJ / T 224-2012 Electronic Remote Water Meter standard;
3. Communication protocol accords with CJ / T 188-2004 Household Metering Device Data Transmission Technology Conditions;
3. No traditional water meter counting mechanism, it will avoid the error caused by structure; high sensitivity;
4. Large turndown ratio, high accuracy, with error correction function;
5. Electronic direct reading function, high-definition display, direct reading and correspondence of digital information;
6. Automatic data uploading function;
7. It is powered by communication line at normal operating state, and built-in battery at power outages, low power consumption design, without valve control function;
8. M-BUS quick connection interface, no polarity, easy installation and maintenance;
9. Reliable and stable performance, water resistance.
3.Service conditions
a)Temperature rating:T30
b)Pressure rating:MAP10
c)Pressure loss rating:△P63
d)Upstream flow field sensitivity rating:U10
e)Downstream flow field sensitivity rating:D5
f)Ambient humidity:≤93%RH
g)Climate and mechanical environment rating:Class B
h)Electromagnetic environment rating:E1
i)Non-measurable negative test
4. Indication error
a)Low area(Q1≤Q≤Q2)The maximum allowable error is ±5%
b)High area(Q2≤Q≤Q4)The maximum allowable error is ±2%
5. Main technical parameters
Nominal diameter DN (mm) | Overload flow Q4 (m3/h) | Common flow Q3 (m3/h) | Boundary flow Q2 (m3/h) | Minimum flow rate Q1 (m3/h) | Range ratio R(Q3/Q1) | Accuracy Level | Minimum reading (m3) | Maximum reading (m3) |
DN15 | 3.125 | 2.5 | 0.05 | 0.03125 | 80 | level 2 | 0.0001 | 9999.9999 |
0.040 | 0.025 | 100 | ||||||
0.032 | 0.020 | 125 | ||||||
DN20 | 5 | 4 | 0.08 | 0.05 | 80 | |||
0.064 | 0.040 | 100 | ||||||
0.0512 | 0.032 | 125 |
6.Overall size and weight
Nominal diameter | Length(L) | Length(L1) | Width(W) | Height(H) | Weight | Threaded connection | |
mm | mm | Kg | d | D | |||
DN15 | 260 | 165 | 85 | 110 | 1.3 | R1/2 | G3/4B |
DN20 | 295 | 195 | 85 | 110 | 1.5 | R3/4 | G1B |
7.Flow error curve
8.Pressure loss curve