Application and installation of plug-in flow meter on large-diameter pipelines in water industry

Abstract: The application and installation information of plug-in flowmeters on large-diameter pipelines in the water industry are provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Jiangsu Shunyi engineer reported: There are many flow meters for measuring the flow of liquids such as dirty water and clean water on large-diameter pipelines, but they still have their own shortcomings and shortcomings. In the measurement, some flow measuring instruments are entangled by debris due to the movable part, which leads to the decline of their accuracy, or even. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the application and installation article details of plug-in flowmeters in large-diameter pipelines in the water industry. Shunyi engineer reported: There are many flow meters for measuring the flow of liquids such as dirty water and clean water on large-diameter pipelines, but they still have their own shortcomings and shortcomings. In the measurement, some flow measuring instruments are entangled with debris due to the movable part, which leads to the decline of their accuracy and even can not be used. Some of the components inside the meter are covered by debris, which affects normal signaling, and some are affected by scaling. At the same time, the flowmeter of large pipelines is too bulky, which is extremely inconvenient to install and transport, and is expensive and consumes serious energy. At the same time, some users of current measuring instruments are not easy to master the use and maintenance technology, and it is difficult to promote. Insertion ultrasonic flowmeter and electromagnetic flowmeter can solve these problems better. First, the structure and principle 1. The structure and principle of the plug-in ultrasonic flowmeter The plug-in ultrasonic flowmeter consists of a converter and a pair of plug-in sensors. The plug-in sensor consists of a positioning base, a ball valve, and a sensor core. Principle: When the ultrasonic wave passes through the liquid, the liquid has a slight influence on the propagation time, and the change of the propagation time is proportional to the liquid flow rate. 2. The structure and principle of the plug-in electromagnetic flowmeter The plug-in electromagnetic flowmeter consists of a converter and a single plug-in sensor. The plug-in sensor is divided into two types with ball valve and without ball valve. Measuring principle, its working principle is based on Faraday's law of electromagnetic induction. When the conductive liquid flows into the measuring tube surrounded by the magnetic field, an induced electromotive force E proportional to the average velocity V will be generated in the direction perpendicular to the flow velocity and the magnetic field. The magnetic field strength B is a constant (controlled by the coil current), and the distance between the monitoring electrodes is also fixed. Therefore, the liquid flow rate V is the first variable of the inductive electromotive force E, and the output signal of the electromagnetic flowmeter has a linear relationship with the flow rate. 2. Technical parameters and technical characteristics The biggest feature of the plug-in ultrasonic flowmeter and the plug-in electromagnetic flowmeter is that there is no need to stop production and power off during installation, and it can be installed under pressure. At the same time, the price-performance ratio is very superior for ruler-type pipes. It is the best choice for large pipeline flowmeters. 1. The plug-in ultrasonic flowmeter has all the technical characteristics of ultrasonic flowmeters. It is not affected by changes in temperature, pressure, density, accuracy and conductivity. The sensor has a simple structure, no throttling, and no blockage. It can display instantaneous flow, instantaneous flow rate, positive, negative, Net cumulative amount, today's flow, heat, etc. Memory function: It can memorize the cumulative amount of day, month and year and the time of power on and power off. Two kinds of circuit signals can be input (temperature, pressure, liquid level are available) Various output methods: RS2324854-20mA0-2mAOCT cumulative pulse frequency with network working mode and self-diagnosis fault function Programmable batch (quantitative) control 2. Insertion type ultrasonic flowmeter is suitable for pipelines from DN80 to DN2400 (DN2400 and above need to be specified) Insertion type electromagnetic flowmeter also has the technical characteristics of electromagnetic flowmeter: low cost; Long life; this article is transferred from the Environmental Technology Network! Easy installation and maintenance-free; A flow sensor of one specification can be used for various pipe diameters, which brings a lot of convenience to selection and use; Insertion electromagnetic flowmeter is suitable for pipes of DN200-DN2000 (DN2000 and above need to be explained). 3. Market application situation With the deepening of users' understanding of it, the insertion flowmeter has gradually been widely used, and the insertion flowmeter of high quality and low price has found its own market positioning. Hubei Yegang's water supply pipelines with a length of more than 300 use DS plug-in flowmeters. There has never been a problem in the three years of operation, which has solved the plant's measurement problems and saved a lot of money from purchasing products to production measurement. Hundreds of units, such as Shanghai Hongqiao Airport, Inner Mongolia Menghua Power Generation, and Ulanhot Power Plant, all use DS insertion flowmeters, which have achieved obvious economic benefits. Fourth, the measurement calibration and calibration cycle of the plug-in flowmeter 1. Online calibration: use a high-precision portable ultrasonic flowmeter to calibrate online, take more than four measurement values, and find the average value. (Pay attention to correct the installation error of the portable ultrasonic flowmeter during this process) 2. Return to factory calibration: The sensor of the plug-in flowmeter is easy to remove and return to the factory together with the converter, and the factory calibration is also a method. 3. Calibration cycle: Judging from the current market application,Insertion flow meters do not require calibration for three years. However, if calibration is required, the calibration period can also be set to one year. V. Summary To sum up, the plug-in flowmeter is most suitable for the liquid flow of large pipe diameter. It is recommended that users can install the plug-in flowmeter in the pipe diameter above DN300. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Application and Installation of Insertion Flow Meter in Large Diameter Pipelines in Water Industry'

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