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 of 8~10 times the nominal diameter of the water meter, and there should be a straight pipe of 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, inclined 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 only one inlet pipe, a bypass pipe should be installed around the water meter.
5) Maintenance valves should be installed before and after the water meter and on the bypass pipe, 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 residential buildings, the maintenance valve behind the meter and the special drainage 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°C. 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.