Abstract: As long as you understand the working principle of intelligent electromagnetic flowmeter and some essential factors of installation, selection and maintenance, you can quickly analyze the cause of the error and deal with it when there is an error in the flowmeter. 1. When the fluid is a solid-liquid two-phase flow, that is, it contains solids such as particles or fibers, and there may be failures. 1. Measurement is the noise generated by the fluid; 2. Attachment on the surface of the internal electrode of the flowmeter is so contaminated; 3. The sediment or insulation of the fluid in the pipeline covers the lining of the instrument; 4. The instrument lining is worn out, making the cross-sectional area of ​​the fluid flow smaller. 2 , when the fluid is not full or the sensor is installed incorrectly, possible failure 1. When the fluid contains a small amount of gas in the pipeline and is distributed in a stratified or wavy flow, the instrument error will be superimposed, that is, the measured value does not match the actual value; 2. When the fluid is a bubble flow or a plug flow, in addition to causing the measured value of the meter to be inconsistent with the actual value, the measurement value sloshing occurs because the bubble covers the surface of the electrode as it passes through the electrode; 3. If the cross-sectional area of ​​the stratified flow is partially increased in the horizontal pipeline, that is, the state of the fluid is not full, the sway of the measured value of the meter may be caused; 3 , intelligent electromagnetic flowmeter electrode material selection is improper, possible failure 1. When the electrode material of the electromagnetic flowmeter is improperly selected, in addition to being corroded after working for a period of time, the following conditions may occur; 2. The surface of the electrode should be chemically reacted to produce a passivation film; 3. Electrochemical reaction and polarization of the electrode to generate an electric potential; 4. An aerosol phenomenon appears on the surface of the electrode; The above chemical phenomena will affect the accuracy of the intelligent electromagnetic flowmeter. The electrode is corroded and judged specifically . How to discriminate the intelligent electromagnetic flowmeter from corrosion 4. Data deviation failure caused by low fluid conductivity The lower limit of the conductivity of the fluid is affected by the working principle of the flowmeter. A specified value must be ≥5μs/cm . More fluids generally have low distilled or deionized water. These conductivity are generally close to the specified values. The lower limit value, the result is that the measured value is unstable Summary: These faults can generally be solved in the selection stage of the intelligent electromagnetic flowmeter, and the conductivity of the fluid can be consulted in the relevant manual first, and the reasonable flowmeter is selected for measurement. Freezer Working Room,Cryogenic Freezer Working Room,FRP Freezer Working Room Inamori Technology (Wuxi) Co., Ltd. , https://www.carbonfibrefactory.com