DG-FW series electromagnetic water meter is a flow measurement system composed of electromagnetic flow sensors and converters, which is specially used for trade metering and settlement of industrial and commercial users of water companies and community assessment measurement and regional measurement (DMA) to meet the urban water supply and ensure accurate water charge calculation, and is widely used in on-site places without power supply.
The product implements the requirements of the metrological verification regulations of the People's Republic of China JJG162-2019 (Verification regulations for Drinking cold water meters) and the national standard of the People's Republic of China GB/T778-2018 (drinking cold water meters and hot water meters), with powerful data processing and information transmission functions.
1. Application Scenarios
Water metering for commercial users
Water metering for residential users
2. User value
● Data warning ● Turbulence suppression ● Easy to use ● Stable and reliable ● Accurate measurement
3. Technical parameters
| caliber | DN15-DN40 |
| Accuracy rating and R value | 1级/ (R160、 R250、 R400、 R500)； 2级/ (R160、 R250、 R400、 R500) |
| Class of protection | IP68 |
| Converter form | As one |
| Antenna form | Built-in, external |
| Power supply | Lithium battery |
| communication | Wired communication: RS-485; Wireless communication: 4G, NB-IoT |
| forewarning | Data warning for elderly people living alone, continuous leakage data warning (including empty houses), continuous zero flow data warning, reverse flow data warning, group data warning. |
4. Key technologies
1 | The battery adopts imported customized battery, which can discharge normally at minus 45℃. |
2 | The converter display adopts an ultra-wide temperature resistant screen with a temperature range of (-50 ° C -75 ° C), which can be applied to extreme temperatures. |
3 | Using large-capacity high-end imported flash memory, the sampling interval can be arbitrarily set from 1 to 15 minutes, and the data can be stored for 3 years. |
4 | The display displays forward cumulative traffic, reverse cumulative traffic, net cumulative traffic, instantaneous traffic, flow direction, and operating status. The water meter is easy to read directly, and the main indicator value can be changed. |
5 | The electromagnetic water meter has a powerful self-diagnosis function: alarm information such as battery power, air pipe, excitation disconnection, signal disconnection, upper and lower flow alarm will be automatically uploaded to the server every 4 hours. |
6 | Electromagnetic water meter has the electromagnetic environment test report issued by the provincial level, in the RF electromagnetic field radiation, static magnetic field, electric fast transient pulse group, surge (impact) and other electromagnetic interference conditions, remote transmission equipment does not lose memory data. |
7 | The water meter supports automatic calibration, and the platform will be calibrated with the server every time it goes online. |
8 | RTU exclusive built-in Bluetooth module, can communicate with the mobile phone and arbitrarily set parameters, upgrade, copy data, etc., very convenient. |
9 | Zero automatic and manual adjustment function; The zero position is automatically adjusted every second to eliminate the zero drift and zero the empty pipe. |
10 | Automatic conductivity transfer function: The water meter can automatically carry out conductivity transfer according to a wide range of changes in the fluid conductivity, which is extremely adaptable to complex changes in the fluid. |
11 | Ultra-wide range ratio: Q3/Q1=400, Q2/Q1=1.6, in line with the latest national standard GB/T778-2018 No matter the large flow during the day or the small flow at night, high precision can be achieved, and the small flow measurement is very excellent, which can solve the problem of unreasonable table selection. |
12 | When the change is reported: our electromagnetic water meter has a powerful alarm function: battery power, water limit, mutation, not full pipe can be every change alarm, can find large users of abnormal water use in time. |
13 | Very low starting flow rate: The minimum starting flow rate of our electromagnetic water meter can reach 2mm/s, and the real dripping can be measured. It is of great significance for the accurate measurement of small flow at night. |
14 | All stainless steel, submersible design: Our electromagnetic water meter is all stainless steel design, IP68 protection grade, in addition to the appearance of clean and beautiful, the instrument can be reliably operated under complex underwater conditions all year round。 |
15 | Strong anti-interference: strong anti-electromagnetic interference ability, in a strong electromagnetic environment, to ensure accurate measurement. In the event of serious interference sources such as frequency converters and water pumps, the table can still be used normally. |
16 | Lithium battery life of more than 6 years: self-developed electromagnetic water meter converter, its circuit board static power consumption is only 200 microamps, can truly ensure the water meter battery life of more than 6 years. |
17 | Zero is very stable: it is rarely maintained, which can ensure that the instantaneous flow of users is zero when they do not use water, and avoid the resulting charging disputes. |
18 | High-precision and stable measurement: The exclusively developed converter adopts low-noise and high-precision imported components of military quality, which can maintain high-precision measurement at low flow rates for a long time. High performance excitation method and optimized filtering algorithm ensure fast response and high precision measurement, even when there are small bubbles and pulsating flow in the pipeline, it can also obtain stable measurement. |
19 | Meter reading system compatibility is good: Our company's electromagnetic water meter has excellent compatibility with the meter reading system, remote data is fully compatible with the platform in use, can provide data call interface, can also build a standard intermediate database, the manufacturer's data is pushed to the intermediate database, the platform is responsible for displaying the data, and the remote data meets the requirements of the appendix "remote water meter communication Protocol". |
20 | Absolutely secure data transfer: Our electromagnetic water meter, its RTU can adopt full Netcom mode, support full NETcom APN access, can cooperate with the user to build APN line, to ensure the absolute safety of data. |
21 | Can be equipped with pressure, temperature measurement (flow, pressure, temperature integrated installation) : Multi-parameter monitoring and Internet of Things technology can simultaneously detect pipe network pressure, flow, temperature, etc. |
22 | Patent anti-demolition design: patent anti-theft detachable cover, once the table seal is opened, it will alarm to prevent theft and tampering with instrument data。 |
23 | Optional meter reading methods: GPRS module and NB-IoT module can be selected or to assist users to build their own APN line for far transmission meter reading, and 485 module can be directly connected to the customer's industrial control system for meter reading. |
24 | Liquid crystal display: The electromagnetic water meter screen is backlit, and the instrument data can be read manually under strong light. |
25 | Seamless switching technology between mains power supply and lithium battery power supply: The integrated electromagnetic water meter can achieve 220V and 3.6V lithium battery dual power supply. When the mains power supply is suddenly cut off, the meter automatically and seamlessly switches to lithium battery power supply without affecting the metering. |
26 | Remote RTU module with Bluetooth function, can achieve data copy: Once the water meter installed in the ground well encounters the situation of weak base station signal and poor network communication, the success rate of meter reading will be greatly reduced, and our RTU Bluetooth can realize data refill by remote control APP. Our RTU can be maintained by installing the APP on a mobile phone with Bluetooth. In the case of poor signal and poor network communication, the instrument data can be read through RTU and APP Bluetooth remote control. |
