Jan 29 2015

Construction of remote water meter, as well as the installation of ten Essentials

1) selection first take into account water meter, water meter workingenvironment: such as water temperature and the working pressure, workingtime, to select measuring ranges and water quality for water, then pressthrough the flow meter design to produce water pressure loss approach and do not exceed the specified value to determine whether water meters diameter.Under normal circumstances, nominal diameter not greater than DN50, shoulduse the rotary-wing water meter DN50 mm nominal diameter, Woltman type water meter compound in which the very large changes in water flow meter. Interiordesign should be given priority in the use of wet water meter.

2) when, even when water, commonly used in the design flow should be no more than a meter flow to determine the nominal meter diameter. When there is afire flow and flow check is required to ensure that its total traffic does not exceed the maximum flow rate of the meter limit.
Construction of remote water meter and installation requirement
1), the meter should be installed in the convenience of maintenance andreading without exposure, freeze, where pollution and mechanical damage.
2) front end, Woltman type water meter shall have 8~10 times the nominalmeter diameters of straight pipe, and other types of water meter before and after should have a straight pipe of not less than 300mm.
3), rotary wing and horizontal Woltman type water meter water meters should be installed horizontally; horizontal Woltman type cubic meter according to the actual situation determine the horizontal, sloping or verticalinstallation; when mounted vertically, the direction of flow must be from the bottom up.
4), for the unity of life, production and fire water supply system, such aswhen only one service pipe should be around water meters installed bypasspipe.
5 per cent), and bypass pipe should be installed on both before and afterwater meter repair valves, valves should be installed after the water meterand meter discharge device. To reduce head losses and guarantee before thelinear flow of water flow in pipe, valve repair gate valve should be usedbefore the table. Household water meter in residential, table service valveand special discharge device can not be set.
6) should prevent flooding, water wells, and rainwater.
7), the meter should be consistent with its type.
8), inversion, occurred when the meter may affect the measurement, anddamaged when the meter should be set after the water meter check valve.
9), hot and cold water meter installation requirements in addition todifferences in temperature, is basically the same. The maximum operatingtemperature is 110 degrees hot water table. If hot water meter installed infront of the boiler or heat exchanger to prevent reflux, non-return valveshould be set after the water meter.
10), and far biography meter installation has two species way: only up to outdoor copy table role of far biography meter installation more simple, as long as will meter output system and installation Yu outdoor of data displayed device (relay device) connected received can; another a way is will whole floor or whole community of all far biography meter through relay device and network controller connection to community management sector, through terminals for unified management.