Abstract: The information on how to ensure the measurement accuracy of the metal tube float flowmeter is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Metal tube rotameter is a very common type of flow measuring instrument in industrial automation process control. It can be used to measure the flow of liquid and gas, especially suitable for medium flow measurement with low flow rate and small flow. Metal tube rotameter in temperature and pressure. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to ensure the measurement accuracy of metal tube float flowmeters. Metal tube rotameter is a very common type of flow measuring instrument in industrial automation process control. It can be used to measure the flow of liquid and gas, especially suitable for medium flow measurement with low flow rate and small flow. Metal tube rotameter has great advantages in temperature and pressure, and works stably and has high reliability. Therefore, it is widely used in the industry and attracts more and more attention in the industrial field. Because of the stable and robust nature of metal tube rotameters, these products are widely used in high pressure, high temperature and corrosive gases or liquids. Due to the different requirements of each enterprise for product standards, the scale display of the manufactured float flowmeter is also different, so the accuracy of the product will be different. Because there are some particularities in the measurement principle, this product is not easy to be used by people. If you want to use this product better, you must ensure the accuracy of the measurement accuracy. When installing, try to avoid direct sunlight and high temperature environments so as not to reduce the capacity and life of lithium batteries or LCD screens. In order to ensure the normal operation of the metal tube rotameter and achieve the required measurement accuracy, generally pay attention to the following points: 1. The fluid flows through the flowmeter from bottom to top. The metal tube rotameter is generally installed vertically, and the verticality is less than 2°, the horizontal angle is less than 2 when installed horizontally°, so that it does not affect production when dealing with faults or purging. The metal tube rotameter installed on the process pipeline should be bypassed. 2. There should be a 250mm straight pipe section at the outlet, and a straight pipe section with a length of more than 5 times the pipe diameter at the entrance of the metal tube rotameter. In order to ensure the measurement accuracy of the instrument. 3. If the medium contains ferromagnetic substances, consider installing a magnetic filter between the valve and the straight pipe section. 4. The product does not need maintenance after the device is in normal operation. The fault mostly occurs when the device is just running, because the pipeline is not cleaned cleanly, and the float is stuck by solid particles, and the pointer of the indicator stops at a certain position. At this time, the valves on both sides of the flowmeter should be closed first, the flowmeter should be removed, the float should be taken out for cleaning, and then reinstalled. 5. Under the action of uneven pressure, the PTFE will be deformed when installing the PTFE-lined instrument, so the flange nuts are evenly and symmetrically tightened. 6. When used for gas measurement, it should be ensured that the pipeline pressure is not less than 5 times the pressure loss of the flowmeter, so that the float can work stably. When heat insulation protection measures are required, if the temperature of the measured medium is higher than 220°C or the fluid temperature is too low and crystallization is likely to occur, the jacket type should be selected for cooling or heat preservation. 7. The instrument for measuring gas is calibrated under a specific pressure. If the outlet is directly discharged to the atmosphere, it will cause a pressure drop at the float and cause data distortion; if it is such a working condition, it should be installed at the outlet of the instrument a regulating valve. 8. In order to ensure the performance of the instrument, at least 100mm around the instrument installation, no ferromagnetic substances are allowed, because the instrument transmits signals through magnetic coupling. 9. The flange of the process pipeline must be coaxial with the flange of the flowmeter and parallel to each other, in order to avoid the deformation of the flowmeter caused by the pipeline. Appropriately increase the pipeline support to avoid pipeline vibration and reduce the axial load of the flowmeter. 10. Pipe flanges, fasteners, and gaskets must have the same standards as the flowmeter flange to enable the normal installation and operation of the instrument. Periodic inspection of the metal rotameter is essential in order to maintain a stable life and function of the rotameter. Under normal circumstances, the float flowmeter is directly calibrated by water and air, but it should be noted that if the medium on the flowmeter scale is the same as the medium condition at the time of calibration, then the flow comparison method is directly used to calculate However, if the conditions of the two media are different, then it is necessary to further study the density and viscosity functions, use the relevant formulas to calculate the coefficient of the specific change scale, and then adjust the product according to the accurate calculation results. Checking is very important. 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 ensure the measurement accuracy of the metal tube float
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