How to ensure the accuracy of the metal float flow meter?

Abstract: How to ensure the accuracy of the metal float flow meter? The information is provided to you by the excellent manufacturers of flowmeters and flowmeters. The metal float flowmeter produced by the company is a kind of variable area flowmeter. In a vertical conical tube that expands from the bottom to the top, the gravity of the float with a circular cross section is borne by the hydrodynamic force, and the float can be free in the conical tube. rising and falling. in flow. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is how to ensure the accuracy of metal float flowmeters? Article details. The metal float flowmeter produced by the company is a kind of variable area flowmeter. In a vertical conical tube that expands from the bottom to the top, the gravity of the float with a circular cross section is borne by the hydrodynamic force, and the float can be free in the conical tube. rising and falling. It moves up and down under the action of flow rate and buoyancy, and after balancing with the weight of the float, it is transmitted to the dial to indicate the flow through magnetic coupling. Metal rotameter is a kind of flow measurement surface commonly used in industrial automation process control. It has the characteristics of small pressure loss, large detection scale (range ratio 10:1), and convenient use. It can be used to measure liquid, gas and steam. It is especially suitable for medium flow measurement with low flow rate and small flow rate. How to guarantee the accuracy of the metal float flowmeter purchased by the customer? Now tell everyone: 1. When installing metal float flowmeters, try to prevent direct sunlight and high temperature environments (≥65°C) to prevent the reduction of the capacity and life of the lithium battery. With lithium battery powered exterior. In order to ensure the normal operation of the metal rotor flowmeter and achieve the required measurement accuracy, try to prevent direct sunlight and high temperature environments (≥65°C) to prevent the reduction of the capacity and life of the lithium battery. With lithium battery powered exterior. 2. The fluid flows through the flowmeter from bottom to top, and the metal rotor flowmeter must be installed straight. And straightness is better than 2°, the horizontal angle is better than 2 when the equipment is horizontal°, so that the production will not be affected when dealing with faults or purging; the metal tube float flowmeter of the equipment on the technical pipeline should be bypassed. 3. 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. To ensure the surface measurement accuracy; 4. A magnetic filter should be installed; if the medium contains ferromagnetic substances. 5. Consider installing a filter between the valve and the straight pipe section; if the medium contains solid impurities. 6. It should be ensured that the pipeline pressure is not less than 5 times the pressure loss of the flowmeter, when it is used for gas measurement. In order to make the float work stably. 7. When it is necessary to adopt thermal insulation protection measures, if the temperature of the measured medium is higher than 220 ℃ or the temperature of the fluid is too low, crystallization is likely to occur. Jacket type should be used for cooling or heat preservation; 8. Pipe flanges, fasteners and gaskets are the same as the flowmeter flange specifications to make the appearance of the equipment run normally; 9. No protection is required. after running. The fault often occurs when the equipment is just started, because the pipeline is not clean, and the float is stuck by solid particles. At this moment, the pointer of the indicator stops in one direction. At this time, the valves at both ends of the flowmeter should be closed first, then the upper flange should be removed, the float should be taken out for cleaning, and then re-installed. Note that the tightening of the upper flange nut should be balanced and tightened, and the gasket should be well cushioned; 10. The flange of the technical pipeline must be coaxial with the flange of the flowmeter and parallel to each other, in order to prevent the deformation of the flowmeter caused by the pipeline. Appropriate pipeline support to prevent pipeline oscillation and reduce the axial load of the flowmeter. In the measurement system, the control valve should be installed downstream of the flowmeter; 11. At least 10cm around the equipment, because the surface transmits signals through magnetic coupling, so in order to Ensure the functionality of the exterior. 12. Ferromagnetic substances are not allowed to exist. 13. If the gas is calibrated under a specific pressure, if the gas is directly discharged to the atmosphere at the outlet of the surface, the surface of the gas is measured. An air pressure drop will occur at the float and cause data distortion. If it is such a working condition, a valve should be installed at the outlet of the surface; 14. Be extra careful. Because of the effect of uneven pressure, the appearance of the PTFE fabric is reduced. PTFE will deform, so the flange nuts are evenly tightened symmetrically. 15. Try to prevent the display from direct sunlight when installing, with the appearance of liquid crystal display. To prevent the decline in the service life of the liquid crystal; The above is the entire content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to ensure the accuracy of the metal float flow meter? 》

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