Quick Details
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- Brand Name:zhongyi smart
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, Electricity Quantity, Balance, Valve Status (Default on, Because Cold Water Meter
Has No Valve)
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
四、Performance characteristics
1. There are no moving parts in the ultrasonic water meter body, mechanical wear can be used stably and reliably for a long time, and measurement accuracy can be maintained for a long time.
2. The ultrasonic water meter has a large range ratio and a small initial flow rate, and the range ratio of the water meter can reach: R250, R400; The initial flow rate of the water meter can be
as small as 2-3 liters per hour.
3. The measurement accuracy of ultrasonic water meter is after operation, but factory inspection can be required according to Grade 1 accuracy standard.
4. Ultrasonic water meter has strong adaptability to fluid temperature changes, and can achieve T30/T50/T70 temperature grade.
5. Ultrasonic water meter has strong antistatic and anti-magnetic interference capabilities, and antistatic can reach more than 12000V V.
6. The ultrasonic water meter adopts micro-power consumption design technology to minimize the comprehensive power consumption of the water meter and has a service life of more than 6 +2 years.
7. Ultrasonic water meter can choose a variety of communication modes, such as NB-IOT. LoRa, LoRaWAN, M-Bus. RS485, pulse, etc., and is equipped with infrared communication mechanism, through
which instrument parameters can be configured or instrument data can be read.
8. Ultrasonic water meter has the function of long-term data storage, which can realize data storage and recording of year, month and day, which is beneficial for management departments to
analyze water consumption big data and make reasonable water consumption decisions.
9. Ultrasonic water meter has a water flow direction identification mechanism, which can measure forward and reverse flow, and can adopt a variety of forward and reverse flow statistics and
display methods, so as to use units for data analysis.
10. The ultrasonic water meter has an alarm mechanism for long-term water running (leakage alarm) and an oath reporting mechanism for a single water running exceeding a preset amount, which can
timely remind users whether there is water leakage in the household water pipe and whether they forget to turn off the faucet.
11. The ultrasonic water meter has an empty pipe alarm mechanism, which can be used as an abnormal disassembly alarm after running water normally for a long time.
12. The ultrasonic water meter has an error counting (instantaneous excessive flow metering) judgment mechanism. When an error counting occurs, it can give an alarm in time and record the error
time. When an error counting occurs, the MCU software in the meter has an error correction mechanism, which can prevent the occurrence of an error counting to the greatest extent.
13. Ultrasonic water meter has the function of measuring fluid water temperature, and can give low temperature or high temperature alarm, so that the management department can deal with it in
time.
14. The combination of ultrasonic water meter and management system can have a family water care mechanism. When the family children are not with the elderly, the children or the community where
the elderly are located can know the water habits of the elderly through mobile phone APP, which can give early warning in time.
五、Technical Parameters
Caliber
DN15
DN20
DN25
Minimum Flow (Q1)
0.01
0.016
0.025
Boundary Flow (Q2)
0.016
0.025
0.126
Maximum Flow (Q3)
2.5
4
6.3
Nominal Flow (Q4)
3.125
5
7.9
Range ratio
250
Accuracy grade
Class B
Working pressure
≤ 1. 0MPa
Pressure loss
P40
Level of protection
IP65
Working water temperature
5 ~ 55 ℃
Communication mode
Lorawan/NB/GPRS/RS485
Power supply
3.6 V
Key
Magnetic induction button
Screen
LCD8 bits
Display Range
0 m ³ ~ +99999.999 m ³
六、Product structure and size