一、Product Summary
Ultrasonic water meter is used to accurately measure the flow rate. The product has the characteristics of beautiful appearance, convenient installation, accurate measurement, stable operation, strong anti-pollution and anti-corrosion capability, long service life, small pressure loss, economy and practicality, etc. It is suitable for flow metering and charging of domestic water, central air conditioning system water, etc.
Implementation standard: GB/T 778 Measurement of water flow in closed full pipeline Drinking cold water meter and hot water meter JJG 162-2009 Cold water meter
二、Working Principle
Ultrasonic water meter adopts the principle of ultrasonic wave. It is a kind of water meter that further calculates the flow rate of water by analyzing and processing the time difference caused by the change of speed when ultrasonic sound beam propagates downstream and countercurrent in water.
三、Function List
|
Serial Number |
Functions |
Comments |
|
1 |
Metering function |
Accumulated flow of real-time Hall counter |
|
2 |
Water metering data history storage local |
1. For the latest 90 days, the measurement data is stored every hour 2. The latest 180 days, the measurement data is stored every day 3. Monthly storage of measurement data in the latest year |
|
3 |
Power supply |
1. Battery powered 2. External power supply |
|
4 |
Main battery capacity level indication |
The suffix of that current battery capacity level is report to the server in each metering data message uplink report |
|
5 |
LED indication |
Communication events; Screen Cutting Event |
|
6 |
Manual triggering (triggering varies according to different models) |
Button triggers an escalation event Magnet triggers report event Trigger 1 second switch screen Trigger 2 seconds to report data Trigger more than 9 seconds to restart the device |
|
7 |
Wireless technology |
Lorawan/NB/GPRS |
|
8 |
External Interface |
RS485/Mbus |
|
9 |
Periodic reporting |
1 The default period is 24 hours Latest cumulative measurement data Water meter status: valve status/power supply Battery Capacity Level Downlink Signal Strength Indication |
|
10 |
Timed reporting |
1 Fixed time (for example, 23:00, also configurable) triggers metering data reports every day, and the message payload is the same as the periodic report Latest cumulative measurement data Water meter status: valve status/power supply Battery Capacity Level 5LoRaWAN Downlink Signal Strength Indication RSSI/SNR |
|
11 |
Alarm Message Uplink Report |
Battery Capacity Low Level Alarm Backup Battery Switch Alarm Valve fault alarm |
|
12 |
Screen digital display |
1 Display content: current reading, electric quantity, balance and valve status (default valve opening status of non-valve controlled water meter) 2 Display mode: normally bright (low power consumption screen) |
|
13 |
Mode of transport |
In the transportation mode, log is closed, communication is closed, pulse is not metered, and the operation with minimum power consumption is maintained |
|
14 |
Antenna (Nb/Lorawan/GPRS) |
Built-in antenna (spring/soft antenna) External antenna (chuck antenna) |
|
15 |
Infrared Configuration (Optional, Default None) |
Infrared Setting/Read Table Parameters Infrared Update Program |
|
16 |
Communication mode |
Supported Band |
|
|
M66 (GPRS Communications) |
850/900/1800/1900MHz |
|
|
BC26 (NB Communications) |
B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B66 |
|
|
BC35G (NB Communications) |
B1 @ H-FDD: 2100 MHz B3 @ H-FDD: 1800 MHz B8 @ H-FDD: 900 MHz B5 @ H-FDD: 850 MHz B20 @ H-FDD: 800 MHz B28 @ H-FDD: 700 MHz |
|
|
BG96 (NB/GPRS/CATM Communications) |
Cat M1/Cat NB1: LTE FDD: B1/B2/B3/B4/B5/B8/B12/B13/B18/ B19/B20/B26/B28 LTE TDD: B39 (For Cat M1 Only) EGPRS: 850/900/1800/1900MHz BG96-M Cat M1: LTE FDD: B1/B2/B3/B4/B5/B8/B12/B13/B18/ B19/B20/B26/B28 LTE TDD: B39 |
|
|
BC66 (NB Communications) |
B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/ B25/B26*/B28/B66 |
|
|
Lorawan Newsletter |
CLASSA, CLASSB and CLASSC modes are supported, and the supported frequency bands are shown in the attachment |
|
|
RS485 communication |
Four lines: red +, black-, yellow A, blue B |
| R | 250 |
| OT | 5-55℃ |
| class | B |
