Bulk Size Ultrasonic Water Meter
ULTRASONIC WATER METER (Bulk water meter)
NWM UL-BW
INTRODUCTION
UL-BW is the cast iron ultrasonic bulk meter with advanced sensors for precise and reliable measurement to commercial and industrial application. The meter combined with high-tech IoT technology for both superior hydraulic performance and instant alarm to realize smart water management.
WORKING PRINCIPLES
The sound wave that ows in the direction of the stream moves faster than the one that ows against the stream. The transit times Tab (Transit time of ultrasonic) waves from sensor A to measured continuously. The time difference (Tba - Tab) is directly proportional to the mean ow velocity (Vm) of the liquid. The ow rate is a result of the velocity multiplied by the cross section area of the ow tube size.
FEATURES
1 Non-moving parts
Non-moving parts permit reliable performance,long service life and low pressure loss;
2 High accuracy
High accuracy, unaffected by sand, suspended solids or air pockets;
3 Long battery life
≥10years; possible to keep the external battery bag for easy to exchange;
4 Communication
AMR ready for wireless, or RS485, M-BUS and other wired communication modes;
5 Rectifying device
With rectifying device
DIAL FACE DESIGN
DIMENSION
The Flange Standard under ISO 7005-2:1998(E) PN10 as:
| Size | Dn50 | Dn65 | Dn80 | Dn100 | Dn125 | Dn150 | Dn200 | Dn250 | Dn300 |
| L | 200 | 200 | 225 | 250 | 250 | 300 | 350 | 450 | 500 |
| H | 225 | 230 | 240 | 250 | 285 | 310 | 360 | 410 | 450 |
| B | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 395 | 445 |
| D | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 395 | 445 |
| D1 | 125 | 145 | 160 | 180 | 210 | 250 | 295 | 350 | 400 |
| nXM | 4×M16 | 4×M16 | 8×M16 | 8×M16 | 8×M16 | 8×M20 | 8×M20 | 12×M20 | 12×M20 |
Different Flange Standard for selecting such as: ISO 7005-2:1998(E) PN16, ASME B16.1-Class 125 working for B16.5-Class 150…
METROLOGY
| DN | mm | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| R | Q3/Q1 | 250 | 250 | 250 | 250 | 250 | 250 | 250 | 250 | 250 |
| Q4 | m3/h | 50 | 50 | 78.75 | 125 | 200 | 312.5 | 500 | 787.5 | 1250 |
| Q3 | m3/h | 40 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | 1000 |
| Q2 | l/h | 256 | 256 | 403.2 | 640 | 1024 | 1600 | 2560 | 4032 | 6400 |
| Q1 | l/h | 160 | 160 | 630 | 400 | 640 | 1000 | 1600 | 2520 | 4000 |
| Max. reading | m3 | 99 999.999 | ||||||||
| Min. reading | m3 | 0.00001 | ||||||||
(For different Q3 and R, please contact with NWM manufacture).
MAIN TECHNICAL DATA
| Max. pressure | 1.6MPa | Installation Position | Any position |
| Max. temperature | T30、T50 | Climate and EMC Class | O / E2 |
| Protective class | IP68 | Accuracy class | I / II |
| Communication port | RE-485, M-Bus, NB-IoT, GPRS... | ||
MAIN 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%;
INSTALLATION
Recommand to install the UL-BW water meter at U10D5 (Straight pipe before the water meter at 10D, after the water meter at 5D); Recommand to install the same size of the lter before the water meter; Only for Horizontal installation;
OUTPUT
DATA COMMUNICATION
SYSTEM SCHEME
Factory Show
