omni directional lte mimo antenna.Fixed ultrasonic flowmeter

　　If there is sufficient installation space, using plug-in transducers instead of external transducers completely eliminates the impact of pipe lining, scaling, and pipe wall on ultrasonic signal attenuation, improves measurement stability, and greatly reduces maintenance workload. Moreover, due to the fact that plug-in transducers can also be installed without interruption, their applications are constantly being promoted.

　　Some manufacturers have launched ultrasonic flow meters with internal digital circuits, which are characterized by using digital circuits to process signals, enhancing error correction ability, timely sampling, and improving accuracy (the accuracy of analog circuits is ± 1.5%, and digital circuits can reach ± 1.0%). In addition, the integration degree is improved, the instrument volume is greatly reduced, and there are multiple signal output modes to choose from, which have also achieved good results in practical applications. Users can compare it with ultrasonic flow meters in analog circuits during use.

　　The function selection of ultrasonic flow meters can be determined by users based on actual situations. If measuring bidirectional fluids, it is necessary to choose an ultrasonic flowmeter with positive and negative metering functions; If users need to regularly check the flow rate of the fluid during a certain period of time, they can choose an ultrasonic flowmeter with a printer. In short, the selected ultrasonic flowmeter should meet the needs of users and not be overly comprehensive, resulting in many functions being closed and unused, which increases the purchase cost.

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