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Maintenance of electromagnetic flowmeter

Date:2019-10-12 source:

The maintenance of electromagnetic flowmeter, everything can not escape its own law and law, electromagnetic flowmeter is the same.Want to undertake using more effectively, cannot leave daily maintenance, maintain.

Maintenance of electromagnetic flowmeter

So, how to maintain the flow meter, maintenance has a special method to pay attention to, not only can make the flow meter play a greater utility, can also extend a certain service life.

The flowmeter should avoid ferromagnetic objects and equipment with strong electromagnetic field as far as possible (such as large motor, large transformer, etc.), so as not to affect the working magnetic field and flow signal of the sensor.The sensor scoop converters between the flow signal line and the excitation line.However, the analysis of parts damaged in lightning fault shows that most of the induced high voltage and inrush current causing the fault are introduced from the power supply line in the control room, and there are few other two ways.Because electromagnetic flowmeter measurement contains suspended solid phase or dirty body is far more than other flow meters, the occurrence of inner wall adhesion layer generated fault probability is relatively high.If the adhesion layer conductivity and liquid conductivity similar.Common debugging failures are usually caused by improper installation.

Electromagnetic flowmeter is currently used in industrial production of ** one of the more medium measurement instruments, through the electromagnetic flowmeter we can measure the quality of the medium, flow rate and other data to analyze whether the production process is normal.In the industrial environment, electromagnetic flowmeter is generally used in some corrosive media measurement, so in the process of use need to regularly maintain its maintenance, to ensure its normal work.

When the electromagnetic flowmeter is energized, the zero point must be adjusted when the electromagnetic flow sensor is filled with liquid at rest.After put into operation, it is also necessary to check the operation condition when the current stops at zero.Especially for the accumulation, easy to pollute the electrode, rich in solid non-cleaning liquid, in the early stage of operation should be more check, to determine the normal check cycle.The electromagnetic flowmeter of the communication excitation method and the rectangular wave excitation ratio are more likely to have zero point drift, so it is more important to pay attention to check and adjust.

After the shutdown of the electromagnetic flowmeter, it is necessary to measure the resistance between the electrodes first, and then disconnect the signal connection between the sensor and the converter, so as to determine whether the measuring instrument is in the range specified by the manufacturer after being filled with liquid.The measured resistance value should be recorded and saved, which can be used as the basis to judge the fault of electromagnetic flowmeter sensor in the future.


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