The Main Errors in Electromagnetic Flowmeters

2019-10-11
 The Main Errors in Electromagnetic Flowmeters
 
First of all, the liquid in the tube may not be filled: or the sensor is not installed particularly well, and the back pressure is not enough, so that the liquid in the measuring tube is not filled,and the failure phenomenon is different due to the degree of imperfection and the flow condition. If a small amount of gas is stratified or wavy in the water pipe,the fault phenomenon shows an increase in error,that is, the flow measurement value does not match the actual value; if the flow is bubble flow or plug flow, in addition to the measured value does not match the actual value, there will be output sloshingdue to the instantaneous covering of the electrical surface in the gas phase; if the gas phase of the cross-sectional area of ??the horizontal pipe is increased, the liquid is not full. If the degree of tube is increased, output sloshing will occur; if the liquid is not full, the output will be over-full.
 
The liquid contains a solid phase: the liquid contains solids such as powder, granules or fibers, and may cause failures;
1 slurry noise;
2 electrical surface contamination;
3 conductive deposition layer or insulating deposition layer covering electricity or lining 4 lining is worn or Covered by sediment, the flow cross-sectional area is reduced.
 
Q&T Instrument produces industrial flowmeter for many years. If you have any problem about the selection, installation, using and maintenance of electromagnetic flowmeter, you can contact Q&T Instrument at any time. 

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