It is a metering instrument to continuously measure, record and display volume of water flowing through sensor by use of ultrasonic time difference method.WESDUN is a manufacturer specializing in the production of Ultrasonic water meter;DN15 water meter;Remote communication.
Main Technical Parameters
Caliber(mm)
DN15
DN20
DN25
DN32
DN40
L(mm)
165
195
225
180
200
L1(mm)
260
300
346
305
330
W(mm)
95
95
95
95
95
H(mm)
86
86
89
100
120
Pipe thread connection
R1/2
R3/4
R1
R1 1/4
R1 1/2
Water meter thread
G3/4
G1B
G1 1/4
G1 1/2
G2B
Nominal diameter(mm)
15
20
25
32
40
Max flow Q4(m³/h)
3.125
5
7.87
12.5
20
Nominal flow Q3(m³/h)
2.5
4
6.3
10
16
Transitional flow Q2(m³/h)
0.02
0.032
0.05
0.08
0.128
Min flowQ1(m³/h)
0.0125
0.02
0.032
0.05
0.08
Start-up flow(m³/h)
0.005
0.005
0.008
0.01
0.015
Max flow
999999.99
Measuring range
Q3/Q1, R200/（R250 customizable）
Accuracy class
Class B
Pressure loss class
≤0.063 MPa
Working pressure
1.6 MPa
Temperature class
T50
Temperature range
(5~55)℃
Environment class
Indoor,Class B
Electromagnetic class
E1(Residential, Commercial, Industrial)
Power supply
Built-in lithium battery DC 3.6V
Battery life
＞ 10years
Installation position
Any angle
Display
LCD, 8 digits + additional characters
Flow profile sensitivity class
U10/D5
Communication interface
RS485 modbus/ LoRa
Protection class
IP67/IP68
Features
Low initial flow rate, wide range ratio, high measurement accuracy and stable operation
There are no moving parts and flow-blocking elements inside, and it is not affected by impurities in the water and has a long service life
The ultrasonic water meter output communication function is complete, meeting various communication and wireless networking requirements
The ultrasonic water meter has excellent small flow detection ability, can solve many problems of traditional water meters, is more suitable for water fee gradient charging, and is more suitable for saving and rational use of water resources
IP68 protection level, can adapt to various harsh installation environments. Not affected by impurity, chemicals and magnetic materials in medium.
Installations
Flush pipes before installation to avoid gravels and other foreign objects;
Install a valve and filter before the water meter;
Do not touch the electrical part or pull wires to avoid damage during installation;
Install the water meter horizontally or at an angle, and mount the ultrasonic flow probe horizontally. When installing vertically, ensure water flows from the bottom upward.
Please note that the arrow direction on the pipe shall be consistent with the water flow direction during installation;
Install the joint washer correctly to prevent misalignment from blocking water flow and affecting the meter’s accuracy.
Do not install the water meter in places exposed to strong mechanical vibrations.
Special Notices: Install an on-off valve and filter upstream of the water meter, and fit a second on-off valve downstream for maintenance. To prevent backflow, install a check valve either upstream or downstream of the water meter.
When installing the water meter, reserve a length of DN*10 upstream and DN*5 downstream of the meter.
The water meter refreshes its display every 4 seconds. When testing the water meter, wait at least 4 seconds after closing the valve before reading the values (including the start and end values), otherwise the test results may be affected.
Please make sure the medium flow is within the flow range of the water meter during test and use, otherwise it may result in damage to the water meter;
In case of any malfunction (e.g. metering failed, etc.) during use, please contact the related management department immediately and do not repair it by yourself;
The product is designed with a disposable anti-disassembly seal which shall be removed only by appointed personnel, or otherwise it shall be excluded from the free after-sales service.
