One, wireless transmission without distance requirements, only need to have mobile signal or unicom signal.
Two, no user pay GPRS traffic fees.
Three, easy installation, no concentrator, collector.
Four, the function：
1. Overdraft function: when the user runs out of water, the water meter will automatically close the valve, cut off the water source, remind the user to buy water;
At this time in the water meter button once, can make the water meter valve open, continue to use 2 tons of water, 2 tons after the valve will be permanent
To close the valve, the meter valve can only be opened when the water is recharged.
2. Protection function: when the water meter encounters magnetic interference, the water meter will automatically close the valve; At the same time, the water meter will interfere with the information
In order to record.
3. Battery undervoltage warning function: when the battery is low, the valve will automatically close the valve, cut off the water, has been reminded to use
Contact the management department to replace the battery; At the same time, the recorded data of the remaining water and the actual water consumption are locked
When the water meter can be pressed once to open the valve, after the above operation, the water meter can be thrown to open the valve to use, three days after water
Close the valve and do not re-open the valve. After replacing the new battery, the water meter will automatically open the valve, and the original water information data is retained.
4. Power off valve function: when the water meter power, the water meter will automatically close the valve, to prevent accidents or power failure; heavy
After the new battery is inserted, the valve returns to the pre-power state.
5. Do not change the display mode of mechanical measurement, so that users can check the water consumption directly.
6. No wiring, direct GPRS communication automatically upload data to the server, accurate measurement.
Five, the parameter
1. Electrical parameters:
The line adopts a four-wire bus, with two power lines providing 5V power supply and two RS-485 lines.
Power consumption parameters (test voltage 3.6V, base meter different values slightly different)
Working environment: temperature (-15℃- +55℃), relative humidity < 90%.
Working voltage: built-in lithium thionyl column power type electromagnetic ER2650M/3.6V.
Communication mode: GPRS remote transmission.
Signal acquisition method: dry spring counting is collected to make data acquisition accurate.
Data display mode: mechanical accumulated display, GPRS network remote display.
Uplink mode of water meter data: GPRS network remote copy and read mode.
How it works: The iot water meter is an ordinary valve water meter without metering base meter, with additional control circuit and wireless transmission
The water meter composed of the module.
Product features: no wiring, through wireless communication, meter reading personnel through GPRS remote water meter reading
Table end shows the value, realize metering, protection, valve control and other functions. The system has low cost, high reliability and meter reading
Fast and flexible.
Table address: see cover body permanent number.
Current | Sample 1 |
Static operating current | 2μA |
Sample the static operating current | 3.1μA |
Display operating current | 7.7mA |
Open valve operating current | 40mA |
Closing valve working current | 40mA |
Read switch long-term closed operating current | 2.1μA |
Valve stuck working current | 250mA |
Note: on/off valve current and valve stuck current vary depending on the base meter.
2.RS - 485 parameters
Baud rate: 9600bps
Communication protocol, 188 protocol, MODBUS protocol, compatible with DLT645-2007. You can customize the protocol
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