How to do a good job in the maintenance of the metal tube float flow meter during the Spring Festival to ensure the accuracy

Abstract: During the Spring Festival, how to maintain the metal tube float flow meter to ensure the accuracy information is provided by the excellent flow meter and flow meter manufacturers and quotation manufacturers. During the Spring Festival, many companies will take advantage of the intermittent period of production to maintain industrial flow meters, so how to do the maintenance of metal tube rotameters during the Spring Festival? Now let's talk about what maintenance and precautions need to be carried out. 1. Pointer. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to maintain the metal tube float flowmeter to ensure accuracy during the Spring Festival. During the Spring Festival, many companies will take advantage of the intermittent period of production to maintain industrial flow meters, so how to do the maintenance of metal tube rotameters during the Spring Festival? Now let's talk about what maintenance and precautions need to be carried out 1. Pointer jitter: 1. Slight pointer jitter: generally caused by medium fluctuations. It can be overcome by increasing damping. 2. Moderate pointer jitter: generally caused by the flow of the medium. For gas, it is generally caused by the unstable operating pressure of the medium. A constant voltage or constant flow device can be used to overcome or increase the gas damping of the rotameter. 3. Severe pointer shaking: Mainly due to medium pulsation, unstable air pressure or the pressure, temperature, and flow rate of the gas operating state given by the user do not match the actual state of the rotameter, and there is a large difference in the rotameter. 2. The main reason that the pointer stops at a certain position is that the float of the rotameter is stuck. Generally, when the metal tube rotameter is used, the valve is opened too fast, so that the float quickly hits the stopper upwards, causing the stopper to deform and the float to be stuck. However, it is not excluded that the float is stuck due to the misalignment of the float guide rod and the stop ring. When handling, remove the meter, remove the deformed stopper and reshape it, and check whether it is concentric with the guide rod. If it is not concentric, it can be corrected, then install the float, push the float by hand, and feel that the float is unobstructed up and down. Cocoa, in addition, when installing the rotameter, it must be installed vertically or horizontally, and cannot be tilted, otherwise it will easily cause the meter to jam and bring errors to the measurement. Third, the measurement error is large 1. The installation does not meet the requirements. For the vertical installation of the rotameter, the inclination angle should be kept vertical, and the inclination angle should not be greater than 20 degrees. For the horizontal installation of the rotameter, it should be kept horizontal, and the 100mm space around the rotameter should not have ferromagnetic objects. 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 large change in density of the liquid medium is also a cause of large errors. Before the instrument is calibrated, it 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 a great error in the measurement. 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. 3. Because the gas medium is greatly affected by temperature and pressure, it is recommended to use temperature and pressure compensation to obtain the real flow. 4. Due to many factors such as long-term use and pipeline vibration, the moving parts such as sensing magnets, pointers, counterweights, rotating magnets, etc. of the float flowmeter are loose, 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. 'How to do a good job in maintaining the metal tube float flow meter to ensure the accuracy during the Spring Festival'

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