WORKING PRINCIPLES:

 

The sound wave that flows in the direction of the stream moves faster than the one that flows against the stream.
The transit times Tab (Transit time of ultrasonic waves from sensor A to sensor B) and Tba (from sensor B to A) are measured continuously. The time difference (Tba - Tab) is directly proportional to the mean flow velocity (Vm) of the liquid. The flow rate is a result of the velocity multiplied by the cross section area of the flow tube size.

CHARACTERITICS:
No moving parts permitting the most reliable and longer term life; lowest pressure loss;

Battery life: ≥4years; possible to keep the external Battery bag for easy to exchange;
AMR ready for RS485, M-BUS...;
Digital Display:

Main Technical Data: ISO 4064 Class B

 

MAX PERMISSION ERROR:

FOR CLASS I:
From Q1 inclusive up to but excluding Q2 is ± 1%; From Q2 inclusive up to and including Q4 is ± 3%; FOR CLASS II:
From Q1 inclusive up to but excluding Q2 is ± 2%; From Q2 inclusive up to and including Q4 is ± 5%;

 

Suggest to install the ULW water meter at U15 D5 (Straight pipe before the water meter at
15D, after the water meter at 5D);
Suggest to install the same size of the FILTER before the water meter;
Only for Horizontal installation;

 

Technical Data

Item	GL-UL Series Ultrasonic Water Meter
Pipe Diameter	DN15-DN40mm Single Channel Smal sizel Ultrasonic Water Meter  DN50-DN150mm Dual Channel Bulk Ultrasonic Water Meter  DN200-DN600mm Dual Channel Bulk Ultrasonic Water Meter
Measurement Medium	Water, Sewage, Sea Water (or customized for other liquid).  Full Pipe liquid
Temperature	0.1~30℃
Working Environment	Temperature:-10-45 ℃; Humidity:≤100% (RH))
Working Pressure	1.6Mpa (2.5 MPa optional)
Upstream Sensitivity	U3
Downstream Sensitivity	D0
Electromagnetic Compatibility Class	E2
Communication Interface	RS485/USART/Infrared
Output	Two way OCT pulse output/TTL pulse output/One way 4-20mA output
Power Supply	Built in Lithium battery (3.6, 19AhV) VDC8~36V power supply
Protection Class	IP68, can work 2 meters under water
Digital Display	.Multi line 9 digital accumulative flow 4 digital display for instantaneous flow
Data Storage	EEPROM/FLASH automatically record the accumulative flow of last 512 days
Measurement Cycle	Measuring:1times/second;  Verification:4times/second
Power Consumption	DN15-DN150mm battery life more than 10 years  DN200-DN600mm battery life more than 6 years