China Wireless Lorawan Prepaid Water Meter with Intelligent Function

LoRaWAN Multi-Jet Rotary Vane Wheel Cold / Hot Water Meter
Introduction:
The wireless intelligent water meter consists of remote basic water meter, wireless communication modules and other components. This product can complete the data collection of point-to-point through the gateway with low power consumption, long life and two-way data transmission. It provides reliable protection for the accurate collection of real-time data; Wireles water meter uploads data to the gateway everyday automatically, then the gateway uploads data to the network platform automatically; This product is simple in structure, easy to maintain and replace, and connect with no cables. So, it is easy to install.
Specification:
Operating environment:
Water temperature: 0.1ºC~30ºC
Protection grade: IP68
Operation water pressure: 0.03MPa~1.0MPa
Pressure loss: ≤0.1MPa
Main Parameters:

Power ConsumptionStatic current consumption (wireless module doesn't include counting sensor)≤10µAWireless current receiving power consumption≤18mAWireless current emission power consumptionabout 120mAWireless
Performance
Parameter
RF center frequency433MHzModulationLORAFrequency bandwidth125KHz,250KHz can be optionalRF power20dbm(100mW) (Typical)Transmission rate0.25-50kbps (LoRaWAN)Receiver sensitivity-143dBm @SF12/BW 125KHzPower supply3.6V lithium batteryMore than 10 yearsSampling MethodHall sensor, double pulsePointer sampling at 0.01, addend when positive rotation, subtrahend when inverse rotation.

Range ratio and flow range

(DN)
mmQ3 /Q1Overload Flow
Q4Common Flow
Q3Demarcation Flow
Q2Min Flow
Q1DisplayMin m3Max m3m3/hm315803.1252.50.050.0310.00019999.99991000.040.0252080540.080.051000.0640.0425807.8756.30.1260.0791000.100.063

Features:
1. LXZ based on request
2. Designed for horizontal installation
3. Build in long life battery
4. ISO 4064 certified class B ISO4064
5. Magnet free measuring technology
6. Directly reading
Intelligent Management Function:
Intelligent modes: Totalizer, Forward totalizer, Reverse totalizer
Management modes: Reverse, Magnetic interference, Power shortage
Allowable Maximum Error:
From the minimum flow to the low zone that does not include the demarcation flow: ±5%;
From the demarcation flow to the high zone including the overload flow: ±2%.
Communication Distance:
City transmission distance: about 2km
The number of floors crossed: about 15 floors
Power Supply: The gateway needs an external 220V power supply;
All prepaid costs are stored in the meter reading system. based on the collected data of
water consumption, it is determined whether the user owes fees.
Communication Introduction:
LoRaWAN is a set of communication protocols and system architectures designed for LoRa long-distance communication networks. When the module is powered on, it automatically sends a join packet. If no reply from the gateway to the network, the join packet will be sent in intervals. After the module receives the network access permission message by the gateway, it pushes a packet of heartbeat data; Since then, it starts timing. Actively push a pack of heartbeat data at intervals of 6 hours. The data upload mechanism can be timed or quantitative or both, and can also be customized on demand.
Installation and Attentions:
The installation and use of water meters shall comply with the relevant provisions of Chapter 6 of Standard GB/T778.2-2007 and Article 6.3 of JJG162-2009.
1. The water meter to be purchased should be based on the flow rate often used in the pipeline, and it should be close to the usual flow rate of the water meter.
2. Before installing the water meter, foreign matter and contamination in the pipe should be removed.
3. The installation environment should be suitable, anti- freeze, anti-pollution, waterproof, anti-magnetic and prevent mechanical damage. Water meters should be easy to read, install, maintain, and disassemble.
4. The water meter should be installed horizontally. The arrows on the case should point in the same direction as the water flow in the pipe. The pipes connected to both ends of the water meter should be installed on the same axis to prevent the water meter and accessories from being damaged.
5. A stop cock or valve can be installed upstream of the water meter.
6. Water meters should not be overstressed by pipes and fittings. When necessary, the water meter should be mounted on the base or bracket. In addition, the upstream and downstream pipes of the water pipe must be fastened to ensure that the parts are not moved due to the impact of water when the water meter is dismantled or unloaded on one side.
7. The connection pipe is the accessory that the water meter is installed on the pipe. The water meter and the connection pipe are sealed by the rubber sealing ring. The threads on both ends of the water meter shall not be filled with interdental fillers such as hemp, white paint or raw materials of tetrafluoroethylene.
8. The water meter shall take preventive measures to prevent damage to the water meter due to pressure changes (airbags, cavitation, surges, and water hammers) in the pipeline and external environmental corrosion.
9. The water meter is only used for the measurement of one-way flow. When it is installed at the inlet end of the boiler, a one-way valve shall be installed behind the meter to prevent back flow of hot water. It cannot be used for measurement of hot water (>30°C) and corrosive liquids.
10. Due to the fluctuation of water pressure in the pipeline and the impact of water hammer, it can be observed that the pointer of the water meter rotates up and down when water is not used, and the meter pointer rotates slightly, which is not a malfunction of the water meter.
11. The data collector of meter reading adopts micro-power wireless technology, which can conveniently read the water meter number, water meter reading, and factory enable status.
12. The remote water meter is a wireless system that implements the specifications of three-meter data transmission to facilitate connection, construction, and maintenance.
13. This water meter should prevent the risk of damage caused by impact or vibration around the installation site.
14. In all cases, especially when installing the water meter in the meter well, the water meter should be installed at a sufficient height from the ground. The meter well should be prevented from flooding to avoid contamination.
Company Introduction:
Wuhan Radarking Electronics Corp. is a modern share enterprises which focusing on the smart Internet of things(IOT) /smart grid energy consumption sensor/intelligent electric safety integrated solution. It established in 2002(former name: Wuhan Radarking Co.,Ltd.)and went public on January 27, 2015 with the stock abbreviation RADARKING and stock number 831722. It owns the independent R&D center and factory which is the key recommended high-tech enterprises in Wuhan city.
It mainly R&D, manufacture and sell the integrated solution of smart Internet of things(IOT) energy consumption sensor/smart grid energy consumption sensor/energy consumption information acquisition and transmission(Collector, Concentrator, Communication Module), smart electric meter, smart water meter, "RDK" energy Internet of Things(IOT) intelligent energy safety integrated solution, digital campus energy consumption acquisition(meter reading) charging management integrated solution, 4-in-1 Meter energy consumption acquisition(meter reading) charging management integrated solution, 4-in-1 Meter/All-in-One Card cloud computing total charging management integrated solution, energy consumption monitoring and analysis integrated solution, mobile phone APP(Energy Consumption, Fast E Top Up).
Principle:
It pursues "Military Academy, Military Morality, Character, Integrity"business philosophy. According to the " Success once at a time, Advance and reliable, Customer satisfaction, Continuous improvement" quality policy, produce the military high standard products depend on the talent and technology advantages. By military character, do the man first and then work, and provide the high quality products and favorable service to the domestic and overseas clients. With the high quality products and favorable service, it has won the good reputation from clients and won the large market share. (The group users has more than 3000).
Management:
We have a high efficiency, innovative, serious management team, and the factory has already passed ISO9001-2008 QMS, and ISO14001-2004 environment management system. It has not any batch quality problem since establishment. AQSIQ( State Quality Inspection Administration) take the spot checking of our electric meter during 2009-2016, and all the meter passed the inspection. Fully proved that the production is according to our quality management system, and the product quality is stable and reliable.
Oversea Market:
Quality product performance and good reputation, our products are not only successful sales in China, but also have been exported to more than 100 countries and regions in the world, including: Mongolia, Malaysia, Bangladesh, Germany, Italy, Russia, Brazil , India, the United Arab Emirates, Saudi Arabia and other countries, the products are subject to a great welcome and praise.