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When an electromagnetic flowmeter is in use for measurement, A/D saturation may occur at times. What causes this? According to the analysis by the technicians at Evergrande Instruments, there are many reasons for this outcome, such as: 1. Wear and deposition of scale ； 2. Condensate in the gas c. Mistakes in cavitation formation 3. Gas (bubbles) mixed in the liquid. Furthermore, inaccurate configuration of the electromagnetic flowmeter is also one of the reasons: firstly, there are distortions in the velocity distribution as well as secondary flows ； Secondly, apart from velocity distribution distortion and secondary flow, in most cases a straight pipe section 5 times the diameter of the tube is sufficient downstream ； Some special cases may require a slightly longer length, but it can be assumed that a straight section downstream with a diameter 10 times larger is sufficient to reliably handle any disturbances caused by downstream fittings. If the length of the straight pipe section does not meet the requirements while measurement accuracy must be ensured, one of the following two alternative methods can be adopted, or calibration can be carried out under the actual installation conditions with a flow-blocking element identical to those used in the field, along with the instrument. Calibrated on the laboratory real-flow verification device. Third are the upstream disturbance sources and downstream disturbance sources. The upstream disturbance sources include spiral welded pipes and various flow-blocking fittings (such as elbows, reducers, branch pipes, and valves), which are classified into two categories based on the type of disturbed flow. There are also swirls. Among various pipe fittings, elbows are the most common, along with different combinations of elbows (such as planar double elbows and three-dimensional double elbows). Different electromagnetic flowmeters have varying degrees of sensitivity to upstream flow disturbances; therefore, specific requirements for their installation must be established. Downstream disturbance sources, such as bends and valves, create disturbances in fluid flow that propagate upstream and can affect areas several times the diameter of the pipe. For more information, please visit the company’s official website at http://www.yb1518.com/. Please retain this link when reproducing the content! http://www.yb1518.com/UploadFiles/2012717174126829.jpg