The Working Principle and Characteristics of Ultrasonic Water Meter
The existing ultrasonic water meter is composed of an ultrasonic probe, signal processing unit, display unit, and so on. Using the principle of low voltage and multi-pulse difference, high-precision, and ultra-stable double-balanced signal differential transmission is used to measure the ultrasonic transmission time in the upstream and downstream directions and calculate the flow rate according to the time difference. When the ultrasonic beam propagates in the liquid, the flow of the liquid will cause a small change in the propagation time, and the change of the propagation time is proportional to the flow rate of the liquid. At zero flow, the time required for the two sensors to transmit and receive ultrasonic waves is exactly the same.
Ultrasonic water meter features:
(1) Using ultrasonic flow measurement technology, no pressure loss, no mechanical rotating parts, reducing the energy consumption of the water pump and reducing the cost of water supply.
(2) High reliability, can work at any flow point for a long time, and the measurement is not disturbed by magnets.
(3) Battery-powered, one battery can work continuously for more than 6 years; low starting flow and high precision.
Recommendations for installing ultrasonic water meters:
(1) It is best to use vertical pipes with liquid upward (or diagonally upward), and horizontal pipes should be avoided as much as possible to avoid liquid downward (or diagonally downward) pipes to prevent liquid from filling the pipes.
(2) The installation position of the ultrasonic water meter should not be selected at the highest point of the pipeline. This is mainly to prevent the accumulation of air bubbles in the pipeline so that the ultrasonic water meter cannot measure normally and accurately;
(3) When the ultrasonic water meter is installed on a horizontal pipe, the panel of the ultrasonic water meter should be kept horizontal. When the installation requires inclined installation in special circumstances, the inclination angle cannot exceed 30°.
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