Several reasons for the large measurement error of the float flow meter

Abstract: The information on several reasons that cause the measurement error of the float flow meter to become larger is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. 1. The installation does not meet the requirements. The general glass rotor flowmeter is installed vertically. The inclination angle of the flowmeter cannot exceed 20 degrees during installation. Of course, some rotameters are installed horizontally. . More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are several reasons for the increase in the measurement error of the float flowmeter. The article details. 1. The installation does not meet the requirements. The general glass rotor flowmeter is installed vertically. The inclination angle of the flowmeter cannot exceed 20 degrees during installation. Of course, some rotameters are installed horizontally. The inclination angle is not more than 20 degrees. There must be no ferromagnetic objects in the 100mm space around the rotameter. The installation position should be far away from the valve reducing port, pump outlet, turning port of process pipeline, etc. It is necessary to maintain the requirement of 250mm straight pipe section before and after 5D. 2. The gas medium is greatly affected by temperature and pressure. The flowmeter is calibrated before leaving the factory. The flow scale is calibrated according to the temperature and density of the medium provided by the user. The gas medium is greatly affected by temperature and pressure, so it is necessary to The user provides accurate commonly used temperature values. 3. The density of the liquid medium changes greatly. Before calibration, the meter converts the medium according to the density given by the user, and converts it to the flow rate of water in the calibration state for calibration. Therefore, if the density of the medium changes greatly, it will cause great harm to the measurement. big error. The solution is to bring the changed medium density into the formula, convert it into an error correction coefficient, and then multiply the flow measured by the flowmeter by the coefficient to convert it into the real flow. 4: Various factors such as long-term use and pipeline vibration lead to the loosening of moving parts such as the sensing magnet, pointer, counterweight, and rotating magnet of the float flowmeter, resulting in large errors. Solution: You can first verify by pushing the pointer by hand. First, press the pointer at the RP position to see if the output is 4mA and whether the flow rate is 0%, and then verify according to the scale. If discrepancies are found, the parts can be repositioned. Generally, professionals are required to adjust, otherwise the position will be lost, and it needs to be returned to the manufacturer for correction. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Several Reasons for Larger Measurement Errors of Float Flow Meters'

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