Twelve basic principles and requirements for the installation of compressed air flow meters

Abstract: The twelve basic principles that should be paid attention to in the installation of compressed air flow meters require that information be provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. The twelve basic principles that need to be paid attention to in the installation of the compressed air flowmeter: The inner diameter of the measuring tube of the installed compressed air flowmeter should be consistent with the inner diameter of the pipeline. When the inner diameter of the measuring tube of the selected compressed air flowmeter is smaller or larger than the inner diameter of the process pipeline Different diameter. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details of the twelve basic principles that need to be paid attention to in the installation of compressed air flowmeters. The twelve basic principles that need to be paid attention to in the installation of the compressed air flowmeter: the inner diameter of the measuring pipe of the installed compressed air flowmeter should be consistent with the inner diameter of the pipeline. When the inner diameter of the measuring pipe of the selected compressed air flowmeter is smaller or larger than the inner diameter of the process pipe The reducer is connected at both ends to ensure the same inner diameter and the requirement of straight pipe section. *The principle of point and caliber is consistent. The inner diameter of the measuring tube of the installed compressed air flowmeter should be consistent with the inner diameter of the pipeline. When the inner diameter of the measuring tube of the selected compressed air flowmeter is smaller or larger than the inner diameter of the process pipeline, reducer pipes should be connected at both ends to ensure the consistency of the inner diameter and ensure Straight pipe requirements. The second point is the principle of easy maintenance. The installation location should be convenient for maintenance, and if necessary, a maintenance platform should be added. The third point is the principle of reducing and weakening external interference. It should be installed as far as possible in a location that is not susceptible to external interference. For example, it should be far away from vibration sources, not in places such as compressor rooms; away from electromagnetic disturbance sources, for example, not installed near the inverter, etc. In addition, it should be properly and reliably grounded. The fourth point is the principle of full flow. With the exception of open channel flowmeters, flowmeters should be installed so that the fluid can flow through the pipes. If necessary, the installation height can be lowered, so that the flowmeter measuring tube is lower than the process pipeline, and the flow requirements of the full tube can be achieved. In some occasions, the fluid flow from top to bottom can be changed to flow from the bottom to the top to ensure the flow requirements of the full tube. The fifth point is the principle of emission. Liquid fluid may entrain gas or vaporize liquid, and gas fluid may condense or entrain liquid, which will change the flow cross-sectional area. Therefore, a drainage device should be installed at the lowest position of the process pipeline where the flowmeter is installed, and an exhaust device should be installed at the highest position. Easy to drain and vent. The sixth point, the principle of flushing. Flushing pipelines should be set up for fluids that are prone to crystallisation, sedimentation or contamination, so as to facilitate cleaning of the pressure guiding tube and the detection part. Seventh point, the principle of preventing excessive stress. When connecting the flowmeter measuring pipe flange and the adjacent process pipe inlet flange, excessive stress should be prevented from affecting the flowmeter. For example, damage to the magnetic flowmeter lining. The connecting bolts should be evenly stressed and sealed. Eighth point, the principle of consistent axis. The axis of the flowmeter measuring tube and the process pipeline should be consistent, and it is necessary to correctly align the axis of the process pipeline to ensure the coaxiality. The ninth point is to fully develop the principle of pipe flow. In order to ensure that the fluid flow is to fully develop the flow of the pipe flow, the specified upstream and downstream straight pipe lengths and the specified pipe roughness should be ensured. If necessary, a flow regulator should be installed. Tenth point, the principle of reducing resistance. Minimize the number of fittings installed and use connecting fittings with low flow resistance as much as possible. For example, two 90s of the same plane°Can the elbow be changed to two 45°Elbow etc. Eleventh point, control valve installation principle. The control valve used to regulate this flow should be installed downstream of the flow meter and meet the downstream straight length requirements. The twelfth point, cleaning and welding principles. The flow meter should be installed after the process piping has been cleaned. When welding the process flange, replace it with a short pipe of the same length as the flowmeter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Twelve basic principles and requirements for the installation of compressed air flow meters'

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