The S-UWM ultrasonic water meter is a smart metering solution based on the latest ultrasonic technology. With no moving parts, it is designed to maintain pinpoint accuracy throughout its service life. The meter supports precise measurement of very low flows, helping improve billing accuracy, data quality, and the reduction of non-revenue water.
Key Features of the Ultrasonic Water Meter
High accuracy ultrasonic measurement
Low starting flow down to 0.002 m3/h
No moving parts
IP68 protection class
Leakage and burst alarm function
Support for measuring excessive consumption and wasting water
Little maintenance required after installment
Remote reading support
Long battery life up to 15 years depending on use and setup
Intelligent and Durable Design
Constructed from 100% eco-friendly and durable composite material
Upper cover: 6 mm thick tempered glass
Shell cover: 2.5 mm thick
Anti-ultraviolet, anti-aging, and resistant to weather conditions
Long Service Life
Fitted with 4 lithium batteries, total capacity 14400 mAh, voltage 3.6 V
Battery lifespan options: 10 years and 15 years depending on use and setup
Display Information
Accumulated flow (m3)
Instantaneous flow (m3/h)
Medium temperature (℃)
Available Sizes
DN15
DN20
DN25
Pipe Size and Meter Size
DN15: Pipe ID 17 mm, OD 26 mm; Meter size 130 x 117 x 77 mm
DN20: Pipe ID 22 mm, OD 33 mm; Meter size 130 x 117 x 77 mm
DN25: Pipe ID 28 mm, OD 41.5 mm; Meter size 175 x 117 x 77 mm
Flow Performance
Overload flow rate: 3.125 m3/h for DN15 and DN20; 5 m3/h for DN25
Permanent flow rate: 2.5 m3/h for DN15 and DN20; 4 m3/h for DN25
Starting flow rate: 0.002 m3/h
Instantaneous flow: 0 to 5.000 m3/h
Measurement cycle: 0.25 s
Dynamic range: R160, R250 optional
Pressure, Temperature, and Accuracy
Water pressure rating: MAP10 (1.0 MPa); MAP16 (1.6 MPa) optional
Pressure loss at Q3: △P40
Water temperature: 1 to 50℃ default
Maximum water temperature: 50℃ default; 70℃ and 90℃ optional
Accuracy class: 2
Ambient class: Class C
Protection class: IP68
Upstream/Downstream: U5, D3
Reading Range
Maximum reading: 999999.999 m3
Minimum reading: 0.00001 m3
Connection and Material
Pipe material: Brass
Connecting thread:
DN15: G3/4B
DN20: G1B
DN25: G11/4B
Communication Options
M-bus
NB-IOT
LoRa
LoRaWan wireless (optional)
Optional Wireless Valve for Remote Control
An optional wireless valve is available to work with the S-UWM for remote flow control. The water meter can send commands to the valve to turn on or turn off.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.