wide range of flow measurement

Flow measurement widely used in industrial and agricultural production, national defense construction, foreign trade and scientific research in various fields of people's lives.

Production in the oil industry, from oil extraction, transportation, refining processing until the rule of trade sales, traffic measures throughout the entire process, any one link can not be separated from traffic measurement. Otherwise, the oil industry will not be able to guarantee the normal production and trade exchanges. In the chemical industry, traffic measures will cause inaccurate than the imbalance in the distribution of chemical elements, can not guarantee the quality of products, serious production safety accidents will happen. In the power industry in the production of liquid, gas, steam and other media measurement and regulation of the flow occupies an important position. Flow of accurate measurement is not only to ensure that power plants in the parameters of the best run of great economic significance, but also with the high temperature and high pressure of the development of large-capacity generating units, flow measurement has become a guarantee for the safe operation of power plants an important link. Such as large-capacity water boiler instantaneous flow of discontinued or reduced, may cause serious or Ganguo Explosion of the accident. This requires flow measurement devices should not only be accurately measured, but also issued a timely warning signal. In the production of iron and steel industry, the steel-making process of circulating water and oxygen (or air) flow measurement is the guarantee of product quality one of the important parameters. In light industry, food, textile and other industries, are also inseparable from the flow measurement.

In agriculture, such as irrigation, meteorological wind speed and even some agricultural machinery, such as mobile spray machines, water pumps of the test, a similar need to flow measurement.

In national defense building, with the development of space technology, the flow measured by the very high demand. Such as spacecraft, nuclear-powered submarine's control, can not be separated from traffic instrument; rocket test the power of a large number of negative liquefied fuel, if not allowed to flow, not only great economic loss, and will range from several thousand km of anti-chemical warfare equipment Alsoٲflow instrument; even with some military projects with more than 1,000 Taiwan flowmeter.

Scientific research, the external sector, the same flow measurement occupy an important position and role. And daily life is closely related to the water, gas, gas, oil, have a large number of applications flow measurement instruments.
Flowmeter industrial production processes and scientific experiments of the important parameters

Flow and temperature, pressure, Level, a general thermal chemical production process of the important parameters. These people rely on the parameters of the production process to monitor and control, and the automation of production processes. This improved product quality and output, the protection of production safety and improve operational processes, and improve production conditions, such as scientific experiments will have important significance, at the same time, traffic measurement business is an important basis for economic accounting, traffic measures to ensure accurate and reliable enterprise production High-efficiency, ensuring the best value for money one of the important means.

Flow measurement is an important part of energy measurement

Energy is the economic development and an important material foundation. The current energy issues in China's national economy has become a prominent issue. Energy conservation, has been identified as an important central principles. To do a good job in energy conservation efforts. We must first carry out scientific management of energy, energy is the measurement of the tests conducted on the scientific management of energy an important technical foundation for the work. If not done well this work, energy-saving effect it will be difficult to determine. In the production of water, oil, gas and other fluid medium, is a flow measurement areas. Do this work for energy conservation work is of great significance. China is not only a great deal of energy consumption country, but also very low energy efficiency, lower than in developed countries about 20 percent, China's energy-saving potential is great. If the energy utilization rate increased by 1 percent, its economic benefits will be very substantial. In energy-saving work, Metering is the basis, the traffic measures will play a vital role.

Measuring the flow of content

For traffic volume is a dynamic, flow measurement is a complex technology. Measured from the fluid, including gas, liquid and fluid mixed with three different physical characteristics of the fluid from the measurement of fluid flow conditions, is diverse, such as when the temperature can be measured from the high temperature to Very low temperature, when measured from the pressure of high pressure to low pressure; measured the size of flows from small to large traffic flow; tested the fluid flow can be a laminar flow, turbulence, and so on. In addition to liquid, there are still viscosity of different sizes, and so on. Therefore, in order to accurately measure the flow, it is necessary to study the different conditions in different fluid flow measurement method, and to provide the appropriate instrument. This is the flow measurement one of the key tasks. As measured fluid characteristics of such a complex, surveying and different conditions, resulting in a variety of different measurement methods and measuring instruments. Clearly, if not a unified verification flow measurement accuracy of the instrument approach, to ensure that the mass production process requirements to ensure the equality of trade exchange is not possible. In addition, we must also have a traffic unit rehabilitation methods and verification system is the use of small flow meter standard method of transmission. Measuring the flow of content is another major: the study found that traffic units methods and verification system, the establishment of the base flow measurement, standards devices, to ensure that the money transfer and flow measurement accuracy.

Flowmeter in the factory or use is necessary before measuring its performance tests or test, to ensure product quality and use of accuracy. To this end, we must establish rehabilitation units money flow is the standard devices. The so-called flow standard device that is able to provide accurate flow determine the value of measuring equipment. As for the standard devices of all kinds of traffic structure, principles, technical requirements and test methods detailed information on this site will have an explanation.

the history and Prospect of the Flow measurement

Since ancient times flow measurement is a sign of human civilization. Egyptians use the Nile River flow meter to forecast the performance of Niancheng. The Romans Xiuqu diversion, a traffic measurement orifice. However, due to economic production, until the 1950s, the main industrial use only orifice flowmeter, Pitot tube, float Flowmeter three. Tested the medium range narrow, measurement accuracy of only meet the needs of low-level production. After World War II, as the international economy and the rapid development of science and technology, a growing emphasis on measuring flow, flow meters then developed rapidly. To meet the different types of fluid, under different flow of traffic measurement, over the past 30 years, has developed and put into operation a speed of the flow meter flowmeter, the volume flow meter, momentum flowmeter, electromagnetic flow meter, ultrasonic flow Dozens of new terms such as flow meter.

At present the use of foreign investment have more than 100 kinds of flowmeter, the domestic production of stereotypes have nearly 20. With the automation of industrial production, the development of pipelines, flow meters in the entire instrument share of production is increasing. According to domestic and international data indicate that in different industrial sectors in the use of the flow meters for the whole instrument is 15 to 30 per cent of the total. With the rapid development of flow meters, flow standard device has been relatively rapid development, traffic, money transfer network has been formed. At present, oil, gas, steam the flow of high-precision standards have been installed at the national, provincial and municipal agencies to establish measures to ensure that the flow of money transmission line accurately.

Nevertheless, because of the complex flow measurement technology, and the rapid development of science and technology to flow measurement to update higher demand, traffic measurement from the current situation can not meet the needs of production, there are a lot of flow measurement technology issues to be further studied Solution. The main purpose of existence of the following questions:
Flowmeters species, specifications, accuracy and reliability can not meet production requirements. Especially the corrosive liquid, dirt fluid, high-viscous fluid, multiphase fluid and serious traffic, traffic, and so tiny, pending the development of effective means of measurement.

Traffic flow meter can not meet the standard test equipment requirements, in particular, is the scene of the test flow meter standard devices, is in urgent need of China's current situation to resolve.

Flow measurement technology to be further improved.

Flowmeters with the great gap between the direct impact on the industrial cost accounting and economic management.
The existence of these problems directly affect the flow measurement of development, has attracted national attention, have been discussing their solution.

At present the development trend of traffic measures can be summarized as the following aspects.
Adoption of new technologies, development of new types of flowmeter. With the development of science and technology, ultrasound, laser, electro-magnetic, nuclear technology and micro-computers and other new technologies into the field of flow measurement, making no contact with no moving parts greatly indirect technical development, flow sensors tend to electronic and digital, explore new measures for traffic The field. New flowmeter flow requirements of non-contact digital model of concise; range than wide, linear, digital; may be linear, low price, easy maintenance.
Measurement of the development of special traffic and increase traffic, high-viscous fluid, a very low temperature flow, multiphase flow, high pressure and low pressure gas flow measurement.

Online school is the standard test flow meter on the device. Most of the current flow meter test used offline test.
The use of the method approved by the flowmeter Although the error correction, but because of the use of certification Flowmeter conditions and conditions caused a great difference between the use of additional errors, reduce measurement accuracy. Calibration method of online real solution to this problem is the fundamental way. Online calibration of law is the main problem is a reasonable standard device design. The current standard mobile devices and standards flowmeter is the comparison to the standard devices. But there is still a certain distance from the practical.
With the rapid development of science and technology in the vast flow measurement science workers of hard work, believe in the future not a long period of time, the flow measurement technology to Taiwan to a new level.