Intelligent vortex flow meter

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　　The primary purpose of vortex flow meters is to monitor and measure the flow rate of fluid media in pipelines, and they can be used to measure various types of media such as liquids, gases, and steam. Vortex flowmeters are a commonly used type of flowmeter; they have high practicality, no moving mechanical parts, good reliability, and require little maintenance. With continuous research and development as well as technological upgrades in flowmeter technology, intelligent vortex flowmeters have emerged and are gradually beginning to replace traditional vortex flowmeters. 　　The measurement principle of intelligent vortex flowmeters is identical to that of conventional vortex flowmeters; both rely on the Karman vortex street principle for measurement. Vortex flowmeters possess many advantages that other types of flowmeters do not have, and they are therefore widely used in various industries. The measurement principle is based on fluid oscillations: as the fluid passes through the vortex flow transmitter in a pipe, two rows of vortices are generated alternately above and below the triangular vortex generator, with frequencies proportional to the flow velocity. The frequency at which these vortices are produced is related to the flow velocity of the fluid passing through the vortex generator as well as the width of the characteristics of that vortex generator. Functions and features of the LUGB type vortex flow meter: a wide measurement range, high accuracy, low pressure loss, as well as high reliability and stability over the long term. b. It has a simple structure, making installation and maintenance easy; there are no moving parts nor mechanical wear. c. The latest design for true intelligent vortex flowmeters; the body is manufactured using precision casting techniques, giving it a delicate and attractive appearance, as well as strong resistance to high temperatures and corrosion. d. Common signals are pulses or analog signals, and they are stable with interference resistance. e. A standard export-grade pure-English LCD display that completely replaces the traditional English code format, thereby improving the user experience. 　　The advantages of intelligent vortex flowmeters are evident; all aspects such as functionality, appearance, and safety have been greatly improved. After discussing the features of intelligent vortex flowmeters, we need to delve deeper into their technical parameters. Accurate technical parameters can be regarded as the unique identifier of a flowmeter; only by understanding these parameter values can we easily select the appropriate vortex flowmeter based on the requirements of a particular project. Technical parameters of the Shanghai Youheng Measurement & Control UH-LUGB intelligent vortex flowmeter: 1. Measured media: liquids, general gases, steam. 2. Nominal diameter: DN15～DN300 (full-bore type), DN150～DN2000 (insertion type); sizes larger than DN2000 are available upon request. 3. Medium temperature: -40～100℃ (normal temperature), -40～250℃ (medium temperature), -40～320℃ (high temperature), -40～350℃ (ultra-high temperature).
4. Nominal pressure: 1.6MPa, 2.5MPa, 4.0MPa (>4.0 available upon request).
5. Accuracy: ±1%R, ±1.5%R (full-bore type); ±1.5%R, ±2.5%R (insertion type).
6. Power supply: +12VDC (three-wire pulse output), +24VDC (three-wire pulse output type and two-wire current output type), 3.6V lithium battery, dual power supply.
7. Body material: 304 (other materials available upon request).
8. Protection rating: IP65 (other protection ratings available upon request).
9. Environmental conditions: Temperature –20℃～55℃, relative humidity 5%～90%, atmospheric pressure 86～106kPa. The above are the technical specifications of the UH-LUGB vortex flow meter provided by Shanghai Youheng Measurement and Control. An overview, principles, and specifications of intelligent vortex flow meters have been explained; next is the installation of the flow meter. Before installing a vortex flow meter, it is essential to conduct a thorough inspection of the pipeline in use, and there are many other details that require special attention. Finally, let’s take a look at the requirements for installing vortex flowmeters, so that any issues that may arise during installation do not affect the project timeline. Requirements for the installation environment: a. The installation site must be free from severe vibrations or strong magnetic field interference; pipeline vibrations caused by pumps or valves, etc., may lead to inaccuracies in the flow meter’s measurements, affecting its proper functioning. When installation is necessary, it is recommended to install pipe fastening devices at the upstream and downstream 2D positions to support the pipes, or to use hoses for isolation in order to enhance seismic resistance. a. Avoid direct exposure to high-temperature heat sources and radiation sources. Insulated ventilation equipment must be installed; it helps prevent the converter’s temperature from rising too high when measuring high-temperature media such as steam. Insulation should be applied to ensure that the flow meter’s casing remains exposed, allowing heat to dissipate outward. b. Avoid high-humidity environments and environments with highly corrosive gases. Of course, it must be installed, and ventilation measures are required. c. It is best to avoid installing the flow meter on pipes that are suspended at a great height, as the sagging of the pipes can easily cause leakage in the seal between the flow meter and the flange. It is necessary to install pipe support points 2D upstream and downstream of the flow meter. d. Shanghai Youheng Measurement and Control recommends installing the instruments indoors; if installed outdoors, attention should be paid to protection against water, moisture, and sunlight. Use a shade cover to block the sun. Special attention should be paid to bending the cable into a U-shape at the electrical interface, to prevent water from entering the amplifier housing along the cable. e. The flow meter should not be installed too close to the outlet of the valve, as opening and closing the valve can affect its service life or even cause direct damage to it. To facilitate the service life of the flow meter, a bypass pipe should be installed. f. It is necessary to ensure that the medium in the pipeline is at a full level; the flow meter can be installed on either horizontal or vertical pipelines. If it is installed on a vertical pipeline, the medium being measured must flow from bottom to top if it is a liquid. g. A flow control valve should not be installed upstream of the flow meter; instead, it should be placed downstream of the flow meter. h. Flowmeters have certain requirements regarding the straight pipe sections upstream and downstream of the installation point; otherwise, it will affect the flow pattern of the fluid in the pipeline and reduce the measurement accuracy. 　　Okay! ! That’s all for the basic information on intelligent vortex flowmeters. There are many other aspects related to vortex flowmeters that we haven’t covered, such as installation methods, selection criteria, dimensions, and so on. It can be seen that even a small flow meter has so many stories waiting for us to explore in depth. For more information, please visit the official website of Shanghai Youheng Measurement and Control at www.shyhfl.com