Product Description
Product description
The vertical spiral-wing large-diameter non-magnetic NB-loT water meter is an integrated intelligent water meter based on a dry multi-beam spiral-wing water meter. It adopts a combination of non-magnetic sensing and NB-IoT network communication technology, and adopts electromechanical separation. The structure is easy to maintain and is mainly used for water metering in industries, enterprises and institutions with large water consumption.
Product features
- No wiring, no relay equipment
- Adopts NB-IoT network communication for data remote transmission, featuring wide coverage, large connections, low power consumption, and low cost;
- Using new non-magnetic sensing electromechanical conversion technology, the conversion measurement accuracy can reach ±10 liters;
- The electronic module and the base meter are installed separately, with good interchangeability;
- Ultra-low power consumption design, long service life;
- IP68 waterproof design.
Traffic parameters
| Nominal diameter DN (mm) |
Overload flow Q4 (m3/h) |
Common traffic Q3 (m3/h) |
Boundary flow Q2 (m3/h) |
Minimum flow Q 1 (m3/h) |
Range ratio R(Q3/Q1) |
Minimum reading M in(m3) |
Maximum reading M ax (m3 ) |
Accuracy level |
Temperature level (℃ ) |
| 40 |
1.25× Q3 |
40 |
1.6 × Q1 |
Q3 ÷R |
160 |
0 .0005 |
999999 |
Level 2 |
T30/T90 |
| 50 |
40 |
| 80 |
63 |
| 100 |
100 |
200 |
| 150 |
250 |
| 200 |
|
Maximum allowable error
(±2% when the water temperature is ≤30°, ±3% when the water temperature is >30°)
A. The maximum allowable error in the low zone from including the minimum flow rate (Q1) to excluding the boundary flow rate (Q2) is ±5%;
B. The maximum allowable error in the high zone from including the boundary flow (Q2) to including the overload flow (Q4) is ±2%.
Electronic technical parameters
| Downlink communication method |
RS - 485 |
NB - iot |
| Operating voltage |
DC 7 . 5- 1 6V |
DC3 .6V |
| quiescent current |
< 1 .2 mA |
< 5 uA |
| Communication module |
HD588ADR |
N21/N308/MN316 |
| Electromechanical conversion method |
No magnetic sensing |
No magnetic sensing |
| Electromechanical conversion accuracy |
± 10 liters |
± 10 liters |
| Communication baud rate |
2400bps |
Telecom/Mobile |
| Communication line definition |
|
Red Blue Yellow Black |
Power supply (+) RS485 B- RS485A+ Ground wire (GND) |
|
