Influence of gas ultrasonic flowmeter factors affecting the measuring accuracy of the scale

Abstract: the influence of gas ultrasonic flowmeter the influence factors of scale measurement accuracy information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Now, used in the measurement of natural gas ultrasonic flowmeter calibration on the flow calibration device as much as possible. When using the calibration, can play a role, these parameters, ultrasonic flowmeter, in the case of different values, or calibration? The purposes of this study. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the influence factors of gas ultrasonic flowmeter scale measurement accuracy article details. Now, used in the measurement of natural gas ultrasonic flowmeter calibration on the flow calibration device as much as possible. When using the calibration, can play a role, these parameters, ultrasonic flowmeter, in the case of different values, or calibration? The purpose of this study is that if the fluid temperature variation of gas ultrasonic flowmeter, pressure, in order to determine influence. Now, a device that can carry out the calibration gas flowmeter, ultrasonic flowmeter flowmeter calibration. These devices are almost all, due to the use of natural gas through the pipeline flow, under normal circumstances, it is can change the parameters influence the speed of sound, temperature, pressure, gas composition and so on May be. When using the calibration, can play a role, these parameters, ultrasonic flowmeter, in the case of different values, or calibration? In addition, by changing the temperature and fluid changes in the speed of sound, if further experiment. （ 50℉） Using 21 ℃ high temperature gas, 21 ( 70℉） Calibration experiment, 10 ℃ ℃ with nitrogen ( 70℉） ，32℃（ 90℉） 。 Relative to the average changes in the calibration curve, each series of calibration, calibration. Flowmeter calibration meet the conditions, the change of the velocity of ultrasonic flowmeter and the desired device, in the change of temperature and pressure, and no response. When used in the calibration of natural gas in the liquid medium, switch to nitrogen, observed a slight change is due to the use of state equation of the two different gases. Ultrasonic flowmeter calibration process, the test results under the condition of set as far as possible, these can be included in a further or different under the condition of gaseous medium. By measuring the propagation time of ultrasonic gas flowmeter, the principle of ultrasonic measurement of natural gas, in order to deal with related parties. Ultrasonic is the consensus of fluid flow is less than in the direction of propagation of the time. Two kinds of state, is used to calculate the average velocity of gas flow propagation time difference. , because it contains it's only a physical structure size and spread of the flowmeter, the flow equation, which is independent of ( SOS） The voice in the gas flow rate. Gas flow measurement independent factors will affect the speed of sound in the gas temperature, pressure, and the combination of the gas, such as: therefore, by making assumptions, it is possible. Is worth considering a field under different operating conditions, if this assumption is not correct, the effectiveness of the ultrasonic flowmeter calibration. First of all, measuring sound velocity of gas ultrasonic flowmeter, if you have several independent secondary effect, it may be due to the following reasons. Speed, a certain specific gravity and viscosity, it is air or nitrogen, there is a possibility, namely the nature of the gas is, some changes, it changes from natural gas. They also because it may vary, depending on the temperature and pressure, but in operating conditions within the scope of the inherent properties of gases, ultrasonic flowmeter, indicates that it is less important under the condition of the standard deviation, is considered to be an overlap. Described is the purpose of the study to determine the article, the influence of temperature variation of gas ultrasonic flowmeter, pressure, and fluid. In addition to the ultrasonic flowmeter measurement technology, the program is to support the role of the gas flow meter calibration nitrogen or air. Now, in North America, only two sets of equipment can be used for the calibration of greater than 200 mm in diameter of ultrasonic flowmeter flow range. The growth rate of over 10%, the annual flow meter installed. In the future, the calibration equipment has many limitations. To recalibrate the need, the equipment calibration may be less than a few years. Ultrasonic flowmeter calibration, if a plant is limited natural gas, and the possibility of construction of new mobile devices is limited location and cost. However, if you can prove that the calibration and other media, it is equivalent to create a new device, the possibility of significantly increased. Air calibration gas flowmeter is not just for ultrasonic flowmeter. Almost all of the air flow meter used in gas turbine gas flowmeter calibration and family. Two natural gas calibration, so the flow calibration device can be used in the calibration of the air pressure, to test the same cycle, inert gases, and nitrogen (near zui good choice, it is natural Including 78% nitrogen) In the air.

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