Hello, U.S. imports of electromagnetic flowmeter manufacturers -- KNKE is pleased to answer your questions.
1. Electromagnetic flowmeter measurement tube is not full of liquid
In fact, non-full tube measurement for the vast majority of types of measuring instruments, will cause inaccurate measurement of the situation, such as ultrasonic flowmeter due to insufficient back pressure or flow sensor installation location is poor, resulting in electromagnetic flowmeter measurement tube liquid is not full, failure phenomenon due to the degree of not full and flow conditions have different performance. Different performance.
If a small amount of gas in the water pipe pipeline is layered flow or wavy flow, the failure phenomenon is manifested as an increase in error, that is, the flow rate measurement value does not match the actual value; if the flow is a bubble flow or plug flow, the failure phenomenon in addition to the measured value does not match the actual value, but also due to the gas phase momentarily covered the electrode surface and the output wobbling; if the horizontal pipeline layered flow of the flow of the gas phase in the circulation of the cross-sectional area of the part of the increase in the degree of liquid is not full of the pipe increased, there will also be output If the horizontal pipeline stratified flow in the circulation cross-sectional area of the gas phase part of the increase, that is, the liquid is not full of pipe increase, there will also be output shaking, if the liquid is not full of pipe situation is more serious, so that the liquid surface in the electrode below, there will be the output of the phenomenon of overfullness, resulting in the measurement can not be carried out.
2. Electromagnetic flowmeter measurement of liquid containing solid phase
Liquid containing powder, particles or fibers and other solids, may produce failures; slurry noise; electrode surface contamination; conductive layer or insulating deposits covering the electrode or liner, the electrode can not work; liner is worn or covered with sediment, the circulation cross-sectional area is reduced.
3. Measurement medium contains easy to crystallize components
Electromagnetic flowmeter to measure the possibility of crystallization of the liquid must be used with caution; some of the easy to crystallize chemical materials in the temperature is normal, but also can be used electromagnetic flowmeter to carry out measurements, but due to the delivery of fluids in the conduit have a good accompanying heat preservation, in the heat preservation will not be crystallized during the work, but the measurement of the electromagnetic flow sensor tube is difficult to The implementation of accompanying heat insulation, therefore, the fluid flow through the measuring tube is easy due to cooling caused by the inner wall of a layer of solid. Lead to a decline in the degree of insulation lining is the electrode insulation degree is low, electromagnetic flowmeter lining its main role is to protect the electrode, electrode insulation degree is low, the flowmeter will appear a variety of phenomena, the most common is the flowmeter flow rate value will fluctuate a lot, the stability is not down, resulting in a great deal of error, and its measured data does not have any reference value.
The above is the U.S. imports of electromagnetic flowmeter manufacturers - KNKE, KNKE, on the issue of the answer. If you have electromagnetic flowmeter purchasing needs, welcome to the United States KNKE KNKE official website for selection and purchase, or ask KNKE KNKE professional and technical personnel, to seek the most suitable products for you.