Views: 9 Author: Site Editor Publish Time: 2021-12-24 Origin: Site
Working principle of ultrasonic water meter:
Ultrasonic water meter adopts the time difference method to measure the flow, that is, an ultrasonic transducer is installed in the upstream and downstream of the measurement channel (pipe section) to transmit and receive ultrasonic signals for each other.
Because of the superposition of ultrasonic signal and water flow signal, the propagation speed of sound wave is different in downstream and counter-current, so the running time of ultrasonic signal emitted by different transducers in water is different. By measuring the difference of the time, the flow velocity of fluid can be calculated, and then converted into flow, so as to achieve flow measurement.
There are two transducers on the top of the flow tube. The TRANSDUCER of A sends an ultrasonic signal to the transducer of B (downstream), and the transducer of B sends an ultrasonic signal to the transducer of A (counter-current). The ultrasonic signals of downstream and counter-current form a certain time difference during transmission.
In the case of calibrated tube diameter cross-sectional area and standard measuring tube length, the flow rate of the meter is calculated by the calculation chip on the integrator.
Ultrasonic water meter is an electronic water meter made of industrial electronic components based on the principle of ultrasonic time difference. Compared with mechanical water meter, it has the characteristics of high precision, good reliability, wide range ratio, long service life, no moving parts, no need to set parameters, and installation at any Angle.
Ultrasonic water meter is tested in the pipeline without any movement, flow resistance parts, no wear, small pressure loss. High sensitivity, can detect small changes in flow rate. At the same time, there is almost no requirement for the measured medium, with a very wide range ratio, and the ultrasonic water meter is simple in structure, easy to maintain, very suitable for civil and industrial measurement.