The solution to the poor operation and bad installation of the flow meter

Abstract: The solution information for poor operation and poor installation of flow meters is provided by excellent flowmeter and flowmeter manufacturers. The solution of poor operation and poor installation of flow instruments Common mistakes in the application of flow instruments, including poor operation and flow disturbance and poor installation; cavitation and air bubbles in the liquid; condensate in the gas; wear and deposition, etc. these mistakes. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the solutions for poor operation and poor installation of flowmeters. The solution of poor operation and poor installation of flow instruments Common mistakes in the application of flow instruments, including poor operation and flow disturbance and poor installation; cavitation and air bubbles in the liquid; condensate in the gas; wear and deposition, etc. These errors often lead to inaccurate or malfunctioning flow meter measurements. Users often compare the material balance of the process system with historical measurement values ​​or with other reference flow measurement values, and feel that the flowmeter measurement is inaccurate during use, but remove the meter and check it on the flow standard device, except for a few errors in the meter itself (such as the debug setting fallacy), proving that most meters are normal. Most of the reasons are due to improper installation and arrangement of the instrument and the mixing of different phases in the medium in the pipeline (such as condensed droplets in the gas, and air bubbles in the liquid), etc., resulting in application errors. Poor installation due to poor operation and improper arrangement are common: 1) The acute angle of the standard orifice plate is not installed on the upstream surface. 2) The inner diameter dg of the sealing gasket between the instrument and the pipe is smaller than the inner diameter dp of the pipe and the inner diameter dm of the instrument to generate a beam. dg should be slightly larger than dm, such as dg3) the gasket is eccentric (misaligned). The installation of the sealing gasket is eccentric, which covers part of the flow area and causes the velocity distribution to be seriously distorted and asymmetrical. Since the asymmetric flow occurs at the inlet of the flow sensor, that is, the length of the upstream straight pipe section is zero, it will bring measurement errors to the differential pressure, turbine, vortex, ultrasonic, target, electromagnetic and other instruments. For example, the eccentricity of the gasket of the dn50mm electromagnetic flowmeter is 10mm, and the measurement error is as high as 4% to 10%. 4) The flow meter is in the wrong flow direction. 5) Install the instrument sensitive to vibration interference on the pipeline with vibration. 6) Lack of necessary protective accessories. These defects are well known or suggested by the instrument manufacturer and should be avoided. However, such mistakes are not uncommon because operators are not seriously trained and lack knowledge. Although the inner diameter of the gasket is too small or the installation is eccentric, although it has no or very little effect on the flow value of volumetric, float, Coriolis mass and other instruments, it will increase additional pressure loss. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Solution to Poor Operation and Bad Installation of Flow Meters'

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