I、Product profile
Dear users, thank you for using our company's ultrasonic valve controlled water meter, before using, please read this manual carefully, so that you can use our products easily.
Ultrasonic water meter to achieve accurate measurement of flow. The product has the characteristics of beautiful appearance, convenient installation, accurate measurement, smeter operation, strong anti-pollution and anti-corrosion ability, long service life, small pressure loss, economical and practical, etc. It is suimeter for domestic water and central air conditioning system water flow metering and charging.
Standard: GB/T 778 measurement of water flow in closed full pipe drinking cold water meter and hot water meter JJG 162-2009 cold water meter
II、The working principle of
Ultrasonic water meter adopts the principle of ultrasonic wave, which is a kind of water meter which analyzes and processes the flow rate of water and further calculates the flow rate of water by detecting the time difference caused by the change of velocity of ultrasonic sound beam when it propagates along the current and against the current in the water.
III、Feature list
|
The serial number |
function |
note |
|
1 |
Measurement function |
Real-time Hall counter accumulates flow |
|
2 |
Water metering data history storage locally |
1. For the latest 90 days, measurement data will be stored hourly 2. The latest 180-day measurement data is stored every day 3. Monthly storage of measurement data in the last year |
|
3 |
The power supply |
1. Battery power 2. External power supply |
|
4 |
Main battery capacity level indication |
Reports the current battery capacity level suffix to the server in each metering data message uplink report |
|
5 |
The LED indicator |
Communication events; Cut the screen event |
|
6 |
Manual trigger (trigger is different according to different models) |
The button triggers the escalation event Attractors trigger escalation events Trigger 1 second toggle screen Trigger 2 seconds to report data Trigger for more than 9 seconds to restart the device |
|
7 |
Wireless technology |
Lorawan/NB/GPRS |
|
8 |
External interface |
RS485/Mbus |
|
9 |
Report on a regular basis |
Default is 24 hours 2. Latest accumulative measurement data Water meter status: valve status/power supply 4 Battery capacity level Downlink signal strength indication |
|
10 |
Regular report to |
1 A fixed time (e.g. 23:00, also configurable) triggers metering data reports daily, and the message payload is the same as the periodic reports 2. Latest accumulative measurement data Water meter status: valve status/power supply 4 Battery capacity level 5LoRaWAN downlink signal strength indicating RSSI/SNR |
|
11 |
Alarm message uplink report |
Low battery capacity alarm 2 standby battery switch alarm Valve failure alarm |
|
12 |
The screen display |
1. Display content: current reading, electric quantity, balance, valve status (open by default, because the cold water meter has no valve) 2 Display mode: Constantly bright (low power consumption screen) |
|
13 |
Mode of transport |
In transport mode, log is off, communication is off, pulse measurement is not maintained, and the operation of minimum power consumption is maintained |
|
14 |
Antenna (Nb/Lorawan/GPRS) |
Built-in antenna (spring/soft antenna) External antenna (sucker antenna) |
|
15 |
Infrared configuration (optional, none by default) |
Infrared set/read meter parameters Infrared update program |
|
16 |
Communication methods |
Support the spectrum |
|
|
M66 (GPRS communication) |
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 Communication) |
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 communication |
Support ClassA, ClassB, ClassC mode, the supported frequency band see the attachment |
|
|
RS485 communication |
Four lines: Red +, Black -, Yellow A, Blue B |
IV、The performance characteristics of
1. There are no moving parts in the body of the ultrasonic water meter, and the mechanical wear can be used stably and reliably for a long time, and the measurement accuracy can be maintained for a long time.
2. Ultrasonic water meter has a large range ratio and small starting flow, water meter range ratio up to: R250, R400; Its water meter starting flow rate can be as small as 2-3 litres per hour.
3. The measurement accuracy of ultrasonic water meter is lower, but the factory test can be required according to the level 1 accuracy standard.
4. Ultrasonic water meter has strong adaptability to fluid temperature change, and can achieve the temperature grade of T30/T50/T70.
5. Ultrasonic water meter has strong antistatic and anti-magnetic interference ability, antistatic up to more than 12000V.
6. Ultrasonic water meter adopts micro-power consumption design technology to minimize the comprehensive power consumption of the water meter, and its service life is more than 6+2 years.
7. Ultrasonic water meter can choose a variety of communication methods, such as: NB-IOT. LORA, LORAWAN, M-BUS. RS485, pulse communication, and equipped with infrared communication mechanism, can configure instrument parameters or read instrument data through infrared communication.
8. The ultrasonic water meter has the function of long-term data storage, which can realize the data storage and record of year, month and day, which is conducive to the management department to analyze the big data of water consumption and make a reasonable decision on water consumption.
9. Ultrasonic water meter has a water flow direction identification mechanism, can be positive and reverse flow measurement, and can adopt a variety of positive and reverse flow statistics and display methods, so as to use units for data analysis.
10. Ultrasonic water meter has an alarm mechanism of running water for a long time (leak alarm) and an oath reporting mechanism of running water more than the preset amount for a single time, which can timely remind users whether the water pipe leaks and whether they forget to turn off the faucet.
11. Ultrasonic water meter has an empty tube alarm mechanism, which can be used for a long time after normal water use, as an abnormal disassembly alarm.
12. Ultrasonic water meter has error counting (instantaneous excessive flow measurement) judgment mechanism, when the occurrence of error counting can be timely alarm and record the error time, when the occurrence of error counting, the MCU software in the meter has error correction mechanism, can prevent the occurrence of error counting to the maximum extent.
13. The ultrasonic water meter has the function of measuring the water temperature of the fluid, which can alarm at low temperature or high temperature, so that the management department can deal with it in time.
14. The combination of ultrasonic water meter and management system can provide a family water care mechanism. When the family's children are not around the elderly, the children or the community where the elderly live can know the elderly's drinking habits through the mobile APP and give timely warning.
15. Valve-controlled ultrasonic water meter has valve control function, valve opening and closing control can be carried out by issuing corresponding commands through wireless communication, in addition, the corresponding valve action can also be carried out by setting corresponding opening and closing conditions in the water meter.
V、Technical parameters
|
CAL |
DN15 |
DN20 |
DN25 |
|
Minimum flow (Q1) |
0.020 |
0.032 |
0.050 |
|
Common flow (Q2) |
2.500 |
4.000 |
6.300 |
|
Maximum flow (Q3) |
3.125 |
5 |
7.875 |
|
Range than |
250 |
||
|
Precision grade |
Class B |
||
|
Pressure of work |
1.6 Mpa or less |
||
|
The pressure loss |
Δ p40 |
||
|
Protection grade |
IP68 |
||
|
Working temperature |
5 ~ 55 ℃ |
||
|
Communication methods |
Lorawan / NB / GPRS / RS485 |
||
|
Power supply |
3.6 V |
||
|
The keys |
Magnetic induction button |
||
|
The screen |
LCD8 a |
||
|
Display range |
After 0 m ~ + 99999.999 m after |
||
VI、Product structure and size
| CAL | DN15/20/25 |
| Range ratio | 250 |
| Range ratio | B级 |
| working pressure | ≤1.6Mpa |
| pressure loss | Δp40 |
| Protection level | IP68 |
| Working water temperature | 5~55℃ |
| Communication mode | Lorawan / NB / GPRS / RS485 |
