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An electromagnetic flowmeter is a device used to measure the volumetric flow rate of conductive media. It can often be used in high-temperature, high-pressure, and outdoor environments, but poor maintenance can easily lead to damage to many devices, resulting in increased repair costs for the company. To maintain the accuracy and stability of measurements taken by electromagnetic flowmeters, it is necessary to conduct regular comprehensive inspections on them. Below we will discuss the specific aspects of these inspections. 1. Zero-point check The technical requirements for the zero-point check of the entire device are as follows: the measurement tube of the flow sensor must be filled with liquid with no flow occurring; typically, the converter’s own zero point is set to a negative value, and this value is also quite small ； If its absolute value is greater than 5% of the full scale, an inspection must be carried out first; adjustments should be made only after the cause has been identified. 2. Inspection of connection cables This inspection involves checking the conductivity of each core of the signal wires and excitation wires, as well as their insulation resistance, and verifying whether the grounding of each shielding layer is proper. 3. Inspection of the electromagnetic flowmeter converter: This inspection involves using general-purpose instruments as well as analog signal generators compatible with the flowmeter model to replace the sensor in order to provide a flow signal for zeroing and calibration. Calibration includes zero-point check and adjustment, setpoint check, excitation current measurement, current/frequency output check, etc. 4. Flow sensor inspection Measure the resistance of the excitation coil, as well as the resistance between the electrodes and the liquid, in order to assess the degree of contamination on the electrode surfaces and the condition of any deposits on the lining ； Check the insulation resistance of various parts to determine the degree of component degradation, and to estimate the changes in flow rate caused by variations in flow area before and after cleaning the adhering layer. The above outlines the specific details of the comprehensive inspection for the routine maintenance of electromagnetic flowmeters. Proper maintenance is essential to extend their service life and ensure more accurate measurements. 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