Ranking of Vortex Flowmeter Manufacturers

The vortex flowmeter is a volume flowmeter that measures gas, steam or liquid based on the Karman vortex principle. Now it is widely used in compressed air, high temperature steam, heat transfer oil, liquid and other occasions. It has the advantages of high temperature resistance and strong media compatibility. The earliest study of the vortex street scene dates back to 1878. The Hungarian physicist Strouhal discovered in his experiments that under the action of wind, the tone of a thin string is inversely proportional to the wind speed. And it is inversely proportional to the diameter of the string, which is the origin of the basic principle of the vortex flowmeter. Why mention these? Because to understand the ranking of vortex flowmeter manufacturers, you need to study the development history of vortex flowmeters, and find some professional manufacturers with a long history from the very beginning.　　 In 1969, Yamazaki Hiroro and others studied the hot wire detection method vortex flowmeter. The vortex generator used is a cylinder. This research result was finally absorbed by Yokogawa Electric and launched a commercial vortex flowmeter. At the same time, East-ech of the United States has also developed a vortex flowmeter using thermistor detection method, but their flowmeter uses a triangular column as the vortex sounding body. These two types of vortex streets have naturally become the forerunner of vortex flowmeters and have been widely used in the petrochemical industry.　　 The most rapid development of vortex flowmeter was in the 1970s, when various new types of vortex flowmeter emerged in an endless stream. In the 1970s, the new products of vortex flowmeters launched by various instrument companies in various countries are almost as follows: 　　(United States) Westing House (Westing House) introduced the ultrasonic vortex flowmeter using the principle of ultrasonic detection; 　　(Japan) Yokogawa has been researching and developing for nearly 10 years. After the hot-wire vortex flowmeter, the piezoelectric detection method and the trapezoidal generator are used to launch the company’s second vortex product, a stress-type vortex flowmeter. (British) Kent company adopts capacitance detection method and rectangular generator to introduce capacitive vortex flowmeter to the market; 　　(Japan) Beichen Electric Factory uses strain detection method to develop strain type vortex flowmeter; 　　( U.S.) Foxboro company adopts piezoelectric detection method and T-shaped generator, and launched a vortex flowmeter with piezoelectric element plus diaphragm as the detection element. (U.S.) Ficheru0026Porter company uses strain measurement method to show users an enhanced strain type After the vortex flowmeter entered the 1980s, with the development of new electronic technology, the development of the vortex flowmeter is still rapid, and many companies have invested in the production and development of the vortex flowmeter. (U.S.) Rcher has developed a dual-generating body and dual-detection element stress-type vortex flowmeter, and first put forward the installation specifications and precautions in the manual; 　　 (Japan) Tokyo Metering developed a photoelectric vortex flowmeter; (Germany) E+H company uses piezoelectric detection methods to develop vortex flowmeters with interpolating detection elements and rear-mounted detection elements; 　　 vortex flowmeters entered China from two foreign companies, one is the Japanese Austrian Watts, one is Kent, England. Japan's Ova chose Hefei Instrument Factory to de-localize its products, while Britain's Kent chose Beijing Fibo Anle to de-localize its products. At that time, Fibo Anle was a state-owned enterprise. Later, because the country required to unify the production specifications of the vortex street, Fibo Anle exported Kent’s technology and drawings free of charge. Therefore, the vortex street production in many places, such as the vortex street in Hangzhou, The main source of technology for street flow meter manufacturers is Kent. There are many vortex streets in the outside world, but they will seal the probes orthodoxically, and there are few manufacturers that can solve the seismic problem. Asmik is one of the few, because his products have good performance and low prices. They are currently on the market. Have a large market share. By the way, here is how to choose a good vortex street, because the vortex flowmeter has higher requirements for on-site installation, so the selection is also very important for the vortex street. If the selection is not good, it will seriously affect On-site usage. To choose a good vortex street, pay attention to the following points: 1. It depends on the weight. Due to the innate reason of the measurement principle, the vortex flowmeter needs the influence of the main vibration on the measurement, so increasing the weight is a very good anti-seismic method. . 2. It depends on the material, whether the body is made of high-quality 304 stainless steel. 304 stainless steel has the advantages of no trachoma and no cracks, which can ensure the service life under high temperature and high pressure environment. There are also some low-priced unscrupulous merchants on the market that only use carbon steel materials, resulting in a significant decrease in service life and temperature resistance. 3. It depends on the process, whether forging process is used is also a very important point. Different from the conventional cast-type body on the market, the forging process helps to avoid micro-side leakage at a medium temperature above 260 degrees and improve the compression resistance. 4. It depends on the components, whether the manufacturing process of the vortex generator strictly complies with the corporate standards and whether it is highly symmetrical, otherwise it will affect the measurement accuracy. 5. It depends on the service. The on-site installation of the vortex flowmeter is prone to some minor problems. It is best to choose a local manufacturer or a manufacturer with a local service point to avoid unnecessary troubles.　　 The above are some of the top vortex flowmeter manufacturers, as well as the precautions that need to be paid attention to when choosing a vortex flowmeter. If you want a more cost-effective vortex flowmeter, it is recommended that you choose Kaidi, an old brand that has been in existence for more than ten years, and the current market share is relatively high. The key is that the price is much cheaper than several imported brands, and it is also available throughout the country. There are 21 offices, you can come to your door to guide the installation at any time, saving time and trouble.
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