How to properly install and maintain a metal tube float flow meter

Abstract: The information on how to properly install and maintain the metal tube float flow meter is provided by the excellent flow meter and flow meter manufacturers. Jiangsu Houde Instrument Co., Ltd. is mainly engaged in the research and development and production of standard calibration, temperature, pressure, material level, flow and other instruments and meters, and provides on-site solutions for automated control systems. For the majority of electric power, petroleum, metallurgy, chemical industry, environmental protection, system. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to correctly install and maintain metal tube float flowmeters. Houde Instrument is mainly committed to the research and development and production of standard calibration, temperature, pressure, level, flow and other instruments and meters, and provides on-site solutions for automated control systems. Provide more efficient, more energy-saving and safer services for the production of electric power, petroleum, metallurgy, chemical, environmental protection, pharmaceutical and other enterprises. The following brings you a little knowledge of the instrument: how to properly install and maintain the metal tube rotameter. 1. Precautions for the installation of metal tube rotameter: 1. Before the metal tube rotameter is installed in the process pipeline, the process pipeline should be purged to clean the welding slag in the pipeline to prevent impurities in the pipeline from clogging the instrument and affecting normal use. . 2. In order to ensure the measurement accuracy, it is recommended to install a 5DN inlet straight pipe section upstream of the flowmeter and a 250mm outlet straight pipe section downstream. 3. The metal tube rotameter has vertical installation and horizontal installation. If it is vertical installation, the installation verticality should be guaranteed to be better than 1%. If it is horizontal installation, the installation horizontality should be guaranteed to be better than 1%. 4. If the medium contains solid impurities, a filter should be installed between the valve and the straight pipe section; if the medium contains ferromagnetic substances, a magnetic filter should be installed upstream of the metal tube rotameter. 5. Since the metal tube rotameter is installed with a magnetic remote transmission system, it is necessary to ensure that the magnetic field generated by other surrounding equipment does not affect the measurement results. 6. If the measured medium is a large pulsating flow or two-phase flow, a buffer should be installed upstream of the flowmeter to eliminate or weaken the pulsation to ensure that the flow of the medium is single-phase stable. At the same time, it is recommended that the flowmeter should be damped. of. 7. The flowmeter for measuring gas is calibrated under special pressure. If the gas is directly discharged to the atmosphere at the outlet of the flowmeter, a large pressure loss will occur at the float, causing data distortion. If such working conditions , A valve should be installed at the outlet of the flowmeter to set the required flow value. When the calibration pressure is maintained above the float, the gas will expand at the valve. 8. In order to facilitate cleaning and maintenance and ensure the normal operation of production, it is recommended to set up a bypass pipeline. 9. The axis of the installation pipeline must be coaxial with the flowmeter, and the pipeline should be properly supported to avoid vibration and reduce the stress on the flowmeter. The control valve of the measurement system should be installed downstream of the flowmeter. 10. When installing a metal tube rotameter lined with PTFE, the flange bolts should be tightened symmetrically and not too tight to prevent deformation of the PTFE. 2. Maintenance precautions for metal tube rotameter: 1. Metal tube rotameter belongs to precision equipment, so during transportation, installation, storage, and use, it must be handled with care to prevent brutal transportation and overstress installation. Littering phenomenon everywhere. It must be ensured that the relative position of the indicator and the sensor cannot be changed. Once the relative position changes, it will directly affect the measurement accuracy of the instrument. 2. Metal tube rotameters usually do not require maintenance. However, in the long-term use process, it is inevitable for the pipeline to have ferromagnetic substances adsorbed on the float. If there are too many impurities, the float will be stuck or the measurement accuracy will be affected, so the sensor of the flowmeter should be cleaned. If a magnetic filter is installed at the inlet of the flowmeter, the magnetic filter should also be cleaned regularly. The flowmeter or filter must be removed from the line for cleaning. 3. Before using the electric remote transmission and the flowmeter with alarm limit switch, open the cover of the meter and wire it correctly according to the instructions. For the alarm type, loosen the screw at the limit switch, the user can set the limit alarm position according to the needs, and then tighten the screw and use it after restoration. 4. When used for gas measurement, it should be ensured that the pipeline pressure is not less than 5 times the pressure loss of the instrument to ensure that the float works stably. Generally, the instrument for measuring gas is equipped with a gas damper to minimize the vibration of the float. To further ensure the stability of the float, a throttle valve or suitable orifice plate can be installed at the outlet of the flowmeter. 5. When using the metal tube rotameter, the valve should be opened and closed slowly to avoid damage to the instrument. If the flowmeter is turned on, since there is no pressure in the pipeline or the system has not yet reached the working pressure of the instrument for normal use, the control valve must be opened slowly until the system is normal, and the instrument can be used, otherwise it will easily cause the pointer to jump or the float to suddenly hit and damage. Phenomenon. 6. When the user uses it, if the density of the measured fluid is different from that of water,Or when the parameters and working state of the gas to be measured are different from those specified by the manufacturer, the reading of the indicated value of the flowmeter should be converted. For the conversion method, see 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 properly install and maintain a metal pipe float flow meter'

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