Which factors are important for water meter selection?
General use of word wheel, reading clear, easy to read. But some people think that in the not close reading occasions, or install a pointer type instead of good, because this type of reading can be judged according to the geometric angle of pointer, and do not need to see the numerical scale cylindrical lattice. In recent years, liquid sealed counters are popular because they overcome the shortcomings of the general counter in being contaminated by dirt and rust in the water. Prepaid water meter and remote meter reading is a kind of electronic device or display of data acquisition and transmission by the collector, but the base table is still reading to be retained, compared to a problem in the electronic reading device.
When selecting specifications, you should first estimate the size and flow range of the flow normally used, and then select the water gauge of the nearest flow rate as the preferred. Because the water meter in the common flow, the stability and durability of the performance is the best, more in line with the design requirements. If the water pipe to consider the future water capacity, leaving a margin, then select the water meter, you can lower the caliber specifications. Such as the caliber of 200mm pipes, because the current flow is insufficient, you can choose to install 150mm caliber water meter, and so on in the future flow increased to 200mm of the normal flow of the pipe, and then replaced with the same caliber water meter. The large water consumption of industrial water meters can be selected users choose a large caliber water meter, can also be used several relatively small caliber water meter parallel method, which can not affect the user in normal water supply condition for repair or change the table of individual fault water meter.
This is especially important for large bore water meters. As a result, water meters (such as removable water meters) that can be installed, replaced, or maintained without water are capable of meeting these requirements. Install water meter length and connection mode is also a factor to be considered, although the water meter national standard GB/T778.1-1996 in Tables 1 and 2 have provided this requirement, implementation of the standard meter manufacturing the same type in the installation and connection length. But in recent years, some new water meters (including prepaid intelligent water meters), some are not according to national standards, but by enterprise standard manufacturing, this may be different.
Due to various reasons, many occasions flow through the water meter and the water quality is not as clean as that of the water outlet plant, sometimes it has some impurities (such as rust, sand, hemp, etc.). In this case, in addition to the installation of some filters and other measures in the design of the piping of the water meter, a water or flowmeter type suitable for such water quality should be taken into consideration.
