Product Description

No Moving Parts, high accuracy for years long. No moving components in the flow sensor, avoid long-term abrasion of mechanical parts which may result in inaccurate measurement and failure of the meter. Such design is also resistant to impurities, therefore no inspections and maintenance are cost-free.

Technical Parameter

Nominal diameter (mm)	15	20	25	32	40
Overload flow Q4 (m/h)	3.125	5	7.875	12.5	20
Permanent 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
Minimum flow Q1 (m3/h)	0.0125	0.02	0.0315	0.05	0.08
Start-up flow (m3/h)	0.005	0.005	0.008	0.01	0.015
Max flow	999999.999
Measuring range	Q3/Q1, R200/(R250 customizable)
Accuracy class	Class 2
Pressure loss class	≤0.04 MPa
Working pressure	1.6 MPa
Temperature class	T30/T50
Temperature range	(5~55)℃
Storage temperature	-20~60℃
Environment class	Class B
Electromagnetic class	E1
Power supply	Built-in lithium battery DC 3.6V
Battery life	8-10 years
Battery capacity	8500mAh
Power consumption	10μA
Installation position	Any angle
Display	LCD, 8 digits additional characters
Installation pitch	U10/D5
Communication Interface	RS485 modbus/ LoRa/LoRaWAN/NB-IOT
Protection class	IP68

Notices For Installation

Flush pipes before installation to avoid gravel 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;
When the water meter is installed in a horizontal or inclined way, the ultrasonic flow probe on pipes shall be placed horizontally, and when installed vertically, make sure the water flows from down to up;
Please note that the arrow direction on the pipe shall be consistent with the water flow direction during installation;
The joint washer shall be installed correctly to avoid misaligned washer blocking water and affecting the accuracy of the water meter;
The water meter shall not be installed at a place that may be affected by strong mechanical vibrations; Special Notices:

1. Be sure to install an on-off valve and filter before the water meter and another on-off valve is recommended after it for maintenance. To prevent backflow, a check valve should be installed in front of or behind the water meter.

Before using this water meter, the pipe must be filled with water, otherwise, it will lead to inaccurate or even non-measurement;
When installing the water meter, should be reserved length of DN*10 in front of the water meter. Or should be reserved the length of DN*5 behind the water meter;
The water meter shall refresh the display every 4s, and read the water meter (including the starting value and end value) 4s at least after the valve is closed when testing the water meter, otherwise, the testing 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.