Combination Water Meter
Combination Water Meter
Combination water meter commonly known as the mother water meter, by the large, small, these two calibre water meter composition.The measuring range of tap water through the water meter from the minimum flow rate of the small caliber water meter to the maximum flow rate of the large caliber water meter. So it is the water meter with the largest measuring range and the lowest lower flow limit at present.
Working principle:
The flow rate conversion control valve automatically controls the flow through the bypass small caliber water meter or simultaneously flows through the main road large caliber main water meter according to the size of the flow rate. That is, when the flow rate exceeds a certain value (QX2), the flow conversion control valve opens, and the main meter and auxiliary meter are measured at the same time; when the flow rate drops to a certain value (QX1), the flow conversion control valve is closed again, and the secondary meter is measured. In this way, through the flow conversion control valve automatic control, play the measurement function of the size of the water meter.The meter's metering readings are recorded by two separate counters, i.e. the total volume of water flowing through the duplex meter is the sum of the volume derived from the addition of the primary meter indicator reading and the secondary meter indicator reading. Combination water meter is most suitable for non-continuous large-flow water supply. That is, in the large difference in the size of the flow, water peak and valley frequent changes in the measurement site. Such as residential areas, organs, troops, schools, mines, hospitals, factories and rural water metering. It solves the problem of low flow rate and high water loss rate of ultra-low flow rate under the minimum flow rate of large caliber water meter.
Product characteristic:
Low pressure loss
DN80~200 combination water meter pressure loss less than or equal to 0.04 MPa, For water supply enterprises, its water supply cost is relatively low. It provides an effective guarantee for water supply enterprises to save energy and reduce consumption.
Wide measurement process
The measurement range ranges from the minimum flow rate of the by-pass small-diameter water meter of the main meter to the common flow rate of the large-diameter main water meter, with the range ratio reaching 1250~3000.
the initial flow is very small
DN80、100、150 the bypass small caliber water meter in the compound water meter, if the original DN20 ordinary B grade meter is used, the initial flow rate is less than or equal to 14 l/h, and the water saving water meter is used, the initial flow rate is less than or equal to 2 l/h;.DN200 the bypass small caliber water meter in the compound water meter, if the original DN25 ordinary B grade meter is used, the initial flow rate is less than or equal to 17 l/h, and the water saving water meter is used, the initial flow rate is less than or equal to 3 l/h; Thus, the measurement problem of water consumption which can not be recorded under the condition of minimum flow and ultra-low flow is solved.
The interchangeability is the best
DN80~200 duplex water meter length design is corresponding to the original LXL-80DN80~200 horizontal rotor water meter length, can meet the on-line use of LXL-80DN80~200 horizontal rotor water meter removal and replacement installation. The connection pipe is arranged at the inlet or outlet of the DN80~150 duplex water meter, and the LXS-80DN80~150 rotor water meter can be removed and installed.