What are the precautions in the daily management and maintenance of mass flowmeters?

What are the precautions in the daily management and maintenance of mass flowmeters? 1. Zero point check (zero calibration) Zero point drift is a problem often encountered in the actual operation of mass flowmeters: there are many factors that cause zero point drift, such as the installation stress of the sensor, the structural asymmetry of the measuring tube, and the physical characteristic parameters of the measured fluid. changes etc. Especially in the measurement of small flow, the impact of zero drift on the measurement accuracy is more serious. Therefore, it is very necessary to check and adjust the zero point regularly. The zero point check should be carried out at least once every three months. If the production permits, the time interval of the zero point check should be appropriately shortened for mass flow meters installed at important monitoring points. Whether the zero calibration is complete is the key that directly affects whether the flowmeter operates within the accuracy range. 2. Inspection of working parameters During the use of the mass flowmeter, you should always pay attention to whether the set working parameters have changed, and whether the displayed flow, density, and temperature values ​​are normal. If there is a big discrepancy with the actual value, you can press Repeat the zero flow calibration using the method described in the instruction manual. If you still feel abnormal after the above work is completed, you should check whether the working parameters set inside the transmitter are correct. 3. Regularly observe the fault indication of the flowmeter According to the type, specification and manufacturer of the flowmeter, the fault display methods and contents are also different. For different fault alarm indications, you can check the product instruction manual to determine the cause of the fault and handle it. 4. Regular comprehensive inspection and maintenance For the flowmeter in use, a comprehensive inspection should be carried out regularly: from the appearance of the sensor, the firmness of the installation, the vibration of the process pipeline, the indication of the transmitter and the display instrument, etc., one by one comprehensive inspection, Problems found should be dealt with in time.

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