What is a remote water meter? Remote water meter far away Remote water meter installation
What is a remote water meter?
The remote water meter is composed of an ordinary sending water meter and an acquisition module. The electronic module completes signal acquisition, data processing, storage and uploads the data to the repeater or hand-held meter reading device through the communication line. The meter body adopts an integrated design, which can record and save the user's water consumption in real time. Each water meter has a unique code. When the smart water meter receives the meter reading instruction, the water meter data can be uploaded to the management system. Based on ordinary mechanical cold and hot water meters, coupled with the remote transmission system, the main control parameters selected for the water meter part are flow rate, common flow rate, overload flow rate, minimum flow rate, boundary flow rate, nominal pressure, and maximum allowable working pressure. , pressure loss, etc.
Principle of remote water meter
The shell of the remote water meter adopts fully sealed structure design and engineering installation connection sealing technology. Its specially designed water meter connector not only eliminates the problem of multi-core water leakage, but also facilitates the replacement of the water meter. It can run stably for a long time in an environment of 2 meters underwater, thus eliminating the harm of water. In the base meter of the remote water meter, only an impeller with a magnet on the top rotates, and there is no gear transmission damping. The shaft of the impeller is made of stainless steel, and the shaft sleeve is made of bronze. Sensitive and wear-resistant, after testing 10,000 tons of rated flow water flows through the water meter, the bushing wears only 0.01 mm. When the water flow is small, the one-way valve plate falls under the action of gravity, closes the water inlet valve, and several water inlet grooves in the valve are closed. The water flow can only enter and push the impeller through a water inlet trough that is directly connected to the water inlet, which not only prevents the drawbacks of the water meter from being installed upside down, but also implements the need of dripping water and leaving.
The remote water meter is based on the common mechanical cold and hot water meter, the passive switch direct reading remote water meter is composed of the passive switch direct reading remote water meter and the remote transmission output system. The main control parameters selected for the water meter part are: Flow, common flow, overload flow, minimum flow, boundary flow, nominal pressure, maximum allowable working pressure, pressure loss, etc.
Remote water meter installation
1) The water meter should be installed in a place that is convenient for maintenance and reading, free from exposure to sunlight, freezing, pollution and mechanical damage.
2) The front end of the screw-wing water meter should have a straight pipe 8-10 times the nominal diameter of the water meter, and there should be a straight pipe no less than 300mm before and after other types of water meters.
3) Rotor type water meters and vertical screw type water meters should be installed horizontally; horizontal screw type and volumetric water meters can be installed horizontally, obliquely or vertically according to the actual situation; when installed vertically, the direction of water flow must be from bottom to top.
4) For the water supply system that integrates living, production and fire protection, if there is an inlet pipe, a bypass channel should be installed around the water meter.
5) Maintenance valves should be installed on the front and rear of the water meter and on the side channel pipes, and drainage devices should be installed on the water meter and the valves behind the meter. In order to reduce the loss of water head and ensure the straight flow of water flow in the pipe in front of the meter, the gate valve should be used for the maintenance valve in front of the meter. For household water meters in residences, the maintenance valve behind the meter and the special drain valve device may not be provided.
6) Water meter wells should be protected from flooding and rainwater.
7) The direction of the water meter should be consistent with its type.
8) When the water meter may reverse, affect the measurement and damage the water meter, a check valve should be set behind the water meter.
9) The installation requirements of cold and hot water meters are basically the same except for the different working temperatures. The maximum operating temperature of the hot water meter is 110 degrees Celsius. If the hot water meter is installed in front of the boiler or heat exchanger, in order to prevent backflow, a check valve should be installed behind the water meter.
10) There are two ways to install the remote water meter: the remote water meter that only plays the role of outdoor meter reading is relatively simple to install, as long as the water meter output system is connected to the data display device (repeater) installed outdoors; One way is to connect all remote water meters of the entire building or the entire community to the community management department through repeaters and network controllers, and conduct unified management through terminal equipment.