Water meter structure and measurement principle

Abstract: Information on the structure and measurement principle of water meters is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. 1 battery-powered ultrasonic water meter features and measurement principles and installation requirements Wear, with measurement accuracy. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the water meter structure and measurement principle. 1 Battery-powered ultrasonic water meter features and measurement principles and installation requirements Wear, it has the characteristics that the measurement accuracy does not change for a long time, and the operation is stable and reliable. The user does not need to set parameters, and can be installed at any angle. The standard single-cell battery can work continuously for 6 years, and the optional battery can work continuously for more than 10 years. The empty pipe state automatically enters the power saving mode, and the full pipe state automatically enters the normal measurement mode. Water meter structure and measurement principle The measurement principle of the battery-powered ultrasonic water meter is to use an ultrasonic transducer to generate ultrasonic waves and make them propagate in the water. The sound waves propagate in the water, and the propagation speed increases in the downstream direction and decreases in the countercurrent direction. The same propagation distance has Different propagation times, when ultrasonic waves propagate in flowing water, produce a propagation velocity difference, which is proportional to the water velocity. The water meter is composed of transducers, electronic circuits, flow display, accumulation and other systems. The ultrasonic transmitting transducer converts electrical energy into ultrasonic energy and transmits it into the fluid to be measured. The ultrasonic signal received by the receiver is transmitted through the electronic circuit. It is amplified and converted into an electrical signal representing the flow for display and integration, and the flow measurement is realized. Ultrasonic flowmeter 1.3 Water meter installation and application precautions w5 ~ When installing an ultrasonic water meter, select a part with a uniform distribution of fluid flow field to ensure that there is enough length of straight pipe section, so that the fluid can form a stable velocity distribution. Generally, the length of the front straight pipe section is 10 times the pipe diameter, and the length of the rear straight pipe section is 5 times the pipe diameter. In addition, keep away from the pump and valve as much as possible. If there is an organic pump, the length of the front straight pipe section generally requires 50 times the pipe diameter. If there is a flow control valve, the length of the front straight pipe section generally requires 30 times the pipe diameter. If the length of the straight pipe section does not meet the requirements , the measurement accuracy will decrease. a) Pipe parameters. When installing an ultrasonic water meter on an old pipeline, it is necessary to accurately obtain the parameters of the pipeline, such as the outer diameter of the pipeline, wall thickness, etc., in order to obtain accurate measurement results. b) Installation method. Because the bubbles and impurities in the pipeline will reflect and attenuate the ultrasonic signal, which will bring great errors to the measurement, so the correct installation method must be selected during installation. When the ultrasonic water meter is installed on inclined and horizontal pipelines, it should be installed horizontally, so that air bubbles can gather above the pipeline, and large impurities will flow along the bottom of the pipeline. Inside. In addition, the installation part of the ultrasonic water meter must have a certain back pressure to ensure that the pipeline is filled with fluid, and there are no air bubbles or few air bubbles to ensure the measurement accuracy. Signal strength and signal goodness checks. The signal strength indicates the signal strength of the upstream and downstream probes, and the signal goodness indicates the signal peaks in the upper and lower transmission directions, which can assist in judging the quality of the received signal. ) check of transit time and transit time difference. The transit time represents the average transit time of the ultrasonic waves, and the transit time difference represents the difference between the upstream and downstream transit times of the ultrasonic waves. These two signals are the main basis for the ultrasonic water meter to calculate the flow rate, especially the transmission time difference can best reflect whether the operation of the ultrasonic water meter is stable. If these two signals are unstable, check whether the sensor probe installation point is suitable and whether the setting data is correct. e) Application Notes. Improper installation is the main reason why the ultrasonic water meter cannot work properly. The location needs to be considered during installation. In addition to ensuring sufficient upstream and downstream straight pipe sections, special attention should be paid to the transducers as far as possible to avoid the occasions where there are frequency converters, pumps and other polluting power sources. Timely verification is the premise to ensure accurate ultrasonic measurement: adhere to one installation and one verification, that is, to verify each newly installed ultrasonic water meter during commissioning to ensure that the location is selected, installed well, and the measurement is accurate; When the flow changes suddenly, use the portable ultrasonic flowmeter to check in time to find out the reason for the sudden change of flow, and determine whether the ultrasonic water meter is faulty or the flow has changed. Regular maintenance is the basic work to ensure the long-term operation of ultrasonic. Compared with other flow meters, the maintenance of ultrasonic water meters is relatively small. Regularly check whether the flange connection between the flowmeter and the pipeline is good, and consider the site temperature and humidity. The influence of components, etc., ensures the long-term stable operation of the ultrasonic water meter.

Beijing Sincerity Automatic Equipment Co., Ltd guarantees to providing quality products and services.

At Beijing Sincerity Automatic Equipment Co., Ltd, we make sure everything we do honors that connection – from our commitment to the highest quality in the world, to the way we serve our customers and communities to do business responsibly. We are looking forward to becoming trusted supplier of every customer, inquire us at Sincerity Flow Meter!

Beijing Sincerity Automatic Equipment Co., Ltd will do this by managing our business with integrity and the highest ethical standards, while acting in a socially responsible manner with particular emphasis on the well-being of our teammates and the communities we serve.

While the productivity and efficiency benefits of automation are unequivocal for manufacturing mass flow meter, the need for skilled humans to operate, utilize and advance technologies is equally unmistakable.