The working principle of ultrasonic water meter Advantages and disadvantages of ultrasonic water meters
The ultrasonic water meter is a new type of water meter that can further calculate the water flow by detecting the time difference caused by the speed change when the ultrasonic sound beam propagates upstream and downstream in the water, and analyzes and processes the water flow rate. How does an ultrasonic water meter work? What are the advantages and disadvantages of ultrasonic water meters?
1. Working principle of ultrasonic water meter
The ultrasonic water meter measures the flow by the time difference method, that is, an ultrasonic transducer is installed in the upstream and downstream of the measurement channel (pipe section) for the mutual transmission and reception of ultrasonic signals.
Since the ultrasonic signal and the water flow signal are superimposed, the propagation speed of the sound wave is different in the forward flow and the reverse flow, so the operation time of the ultrasonic signal emitted by different transducers in the water is different. By measuring the time difference, the fluid can be calculated. The flow rate, and then converted into flow, so as to achieve flow measurement.
There are two transducers on the top of the flow tube, transducer A transmits an ultrasonic signal (forward flow) to transducer B, while transducer B transmits an ultrasonic signal (countercurrent) to transducer A, and the forward flow and The ultrasonic signal of the reverse flow forms a certain time difference during the transmission process.
In the case of the calibrated pipe diameter cross-sectional area and the standard measuring pipe length, the flow rate of the meter is calculated through the calculation chip on the integrator.
2. Advantages and disadvantages of ultrasonic water meter
Ultrasonic water meter is a fully electronic water meter made of industrial-grade electronic components using the principle of ultrasonic time difference. Compared with mechanical water meters, 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.
There are no moving or blocking parts in the measured pipeline of the ultrasonic water meter, no wear, and small pressure loss. High sensitivity, small changes in flow rate can be detected. At the same time, it has almost no requirements for the measured medium, has a very wide range ratio, and the ultrasonic water meter has a simple structure and easy maintenance, which is very suitable for civil and industrial measurement.
However, the stability of ultrasonic water meters is low.
3. Application of ultrasonic water meter
1. Industrial process measurement and control.
2. Replace the mechanical flowmeter to improve the measurement reliability.
3. Substitute various types of high-performance flowmeters.
In recent years, with the implementation of water-saving policies such as "ladder water price" and "one meter for one household", the market demand for smart water meters has also continued to expand. We continue to develop and improve digital remote network water meters, and help customers implement data analysis, hosting and other services, providing products and technical support and services for customers to build smart water services. If you are interested in water meters, please contact us.