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Address：302Room,Building B,Changjing Robot Industrial Park,No,104, Huanguan Middle Road,Longhua District,Shenzhen
Phone：(86) 755-82998402
Email：sgzbt@163.com
Ultrasonic water meter -DN50-DN150
technical parameter
Parts | Nominal diameter | Starting flow rate | Minimum flow rate | Transition flow rate | Nominal flow rate | Overload flow rate |
DN(mm) | L/h | Q1（L/h） | Q2（L/h） | Q3（m³/h） | Q4（m³/h） | |
DN15 | 50 | 13 | 0.100 | 0.160 | 40 | 50 |
DN20 | 80 | 30 | 0.157 | 0.252 | 63 | 78.75 |
DN25 | 100 | 50 | 0.157 | 0.252 | 63 | 78.75 |
DN32 | 125 | 88 | 0.250 | 0.400 | 100 | 125 |
DN40 | 150 | 100 | 0.625 | 1.000 | 250 | 312.5 |
Accuracy class | Class 2 | |||||
Dynamic range（Q3/Q1） | 250:1/400:1 | |||||
Nominal pressure | 1.6Mpa | |||||
Water temperature | T30 /T50 /T70 | |||||
Ambient temperature | -20℃～55℃ | |||||
Ambient Class | Fulfils OIML R49 Class C | |||||
Electromagnetic environment | Class E1 | |||||
Battery Lifetime | 3.6VDC lithium batteries, up to 8years(one cell),up to 15years(two cell). | |||||
Pipe section | Copper/Stainless steel/Plastic | |||||
Interfaces | Optical，M-BUS, Sub-G，Lora，NB-IoT (selected) | |||||
Data storage | 36 moths data storage. | |||||
Product features
1、The initial flow is small, the flow turndown is wide.
2、No mechanical parts, no wear, long service life.
3、 The temperature is derived from the inverse algorithm, reducing the temperature sensor, the structure design is more compact.
4、 Store the last 36 months of historical data; with a power-down monitoring circuit, power can be stored immediately when the current data to prevent data loss.
5、 Support for IR, M-BUS output interface, remote meter reading can be achieved, user-centralized control and management.
6、Add the voltage monitoring function, 3.3V voltage detection circuit, alarm when the battery voltage dropped to 3.3V.
7、 Working years should be greater than 8 years.
eg: a 18505(3600 mAH) battery, 80% quantity of electric charge calculation:
work life = 2880/0.040=72000 hours, about 8.2year!