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Product Overview

Ultrasonic water meter is a new type of water meter that measures and displays flow based on the principle of ultrasonic time difference. The meter is equipped with an M-BUS interface by default. It can form a remote meter reading management system through the M-BUS bus and other communication devices. The management department can read the data in the meter at any time to facilitate the statistics and management of user water volume.

Product features

• Dual-channel measurement, high accuracy and good stability;
• With redundancy, even if one of the channels is blocked by foreign objects or an abnormality occurs, the entire meter can still measure normally;
• Has self-diagnosis function: flow sensor fault alarm, temperature sensor open circuit and short circuit alarm, measurement over-range alarm, battery undervoltage alarm;
• Applying the company's patented flow measurement method (which has been authorized by the invention patent) and intelligent data error correction technology, the measurement accuracy and stability are high;
• High definition wide temperature 9-digit LCD display;
• An optional pressure sensor can be used to monitor the water supply pressure of the pipe network;
• Optional Internet of Things communication module (4G or NB-IoT) to form an Internet of Things table.
• Stainless steel pipe sections are clean, hygienic, anti-corrosion and rust-removing.
• Diameter design, small pressure loss.

Traffic parameters

Model diameter	Common traffic Q3
DN50	25 m3 /h
DN65	40 m3 /h
DN80	63 m3 /h
DN100	100 m3 /h
DN125	160 m3 /h
DN150	250 m3 /h
DN200	400 m3 /h
DN250	630 m3 /h
DN300	1000 m3 /h

Main components

Part (part) name	Model specifications	Main material	Remarks
Measurement module	WM1058	/	/
Flow sensor	DJWM-P5-400	Transducer: Piezoelectric ceramic	/
Flow pipe section	DN50～DN300	Cast steel	/
Battery	ER18505/26500	/	3.6V

Technical parameters

Main technical indicators
Cumulative volume resolution	0.01m 3 (when in use) 0.01L (when calibrating)
Current traffic resolution	0.01 m 3 /h (when in use) 0.01 m3 /h (when calibrating)
Pressure resolution	0.01 MPa
Pressure measurement range	（0～1.6）MPa
Quiescent operating current	< 6uA
Battery life	>(6+1) years
LCD display digits	9 bits
Temperature level	T30
Pressure level	MAP16
Pressure loss level	△p25, △p40
Environmental severity level	Class C
Protection level	IP68
Accuracy level	Level 2
Electromagnetic environment level	E1
Installation method	horizontal or vertical
Upstream flow field sensitivity level	U5
Downstream flow field sensitivity level	D3
Reverse flow	Measurable reverse flow
Range ratio (Q3/Q1)	125, 160, 200, 250, 400 optional

Installation dimensions

Nominal diameter DN (mm)	Body length L (mm)	Flange outer diameter D2 (mm)	Threaded hole center diameter D1 (mm)	Connecting bolts	Flange thickness C (mm)
50	200	120	125	4*M18	20
65	200	140	145	4*M18	20
80	225	180	160	8*M18	20
100	250	220	180	8*M18	22
125	250	250	210	8*M16	22
150	300	280	240	8*M20	24
200	345	335	295	12*M20	24
250	445	405	350	12*M24	26
300	500	460	400	12*M24	28