Advantages and Disadvantages of Float Flow Meters

Abstract: The advantages and disadvantages of the float flow meter are analyzed and provided by the excellent flow meter and flow meter production and quotation manufacturers. Float flowmeter is cheap and easy to install, especially in the measurement of small pipe diameter and low-speed medium. Below and the technology of Shunda flowmeter manufacturers, summarize the advantages and disadvantages of float flowmeters, I hope to give you. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the analysis article on the advantages and disadvantages of float flowmeters. Float flowmeter is cheap and easy to install, especially in the measurement of small pipe diameter and low-speed medium. The technology of the flowmeter manufacturer below summarizes the advantages and disadvantages of the float flowmeter, hoping to provide you with help in use. Advantages: Rotameters are used for small pipe diameters and low flow rates. Commonly used instruments have a diameter of 40-50mm or less, and the minimum diameter is 1.5-4mm. It is suitable for measuring low flow rate and small flow rate. Taking liquid as an example, the nominal pipe diameter of the full-scale flow rate of glass tube rotameter with a diameter of less than 10mm, the flow rate is only between 0.2-0.6m/s, or even lower than 0.1m/s; metal The tube rotameter and the glass tube rotameter with a diameter larger than 15mm are slightly higher, and the flow rate is between 0.5-1.5m/s. Float flowmeter can be used for lower Reynolds number, choose a float with insensitive viscosity shape, as long as the Reynolds number at the circulating annular gap is greater than 40 or 500, the flow coefficient of the change of Reynolds number remains constant, that is, the change of fluid viscosity does not affect the flow coefficient. This value is far lower than the minimum Reynolds number of 104-105 required for throttling differential pressure instruments such as standard orifice plates. Most rotameters do not have requirements for upstream straight pipe sections, or they do not have high requirements for upstream straight pipe sections. The float flowmeter has a wide flow range, generally 10:1, the lowest is 5:1, and the highest is 25:1. The output of the flow sensing element is nearly linear. Pressure loss is low. The glass tube rotameter has a simple structure and low price. As long as it is convenient for those who indicate the flow in the field, the disadvantage is that there is a risk that the glass tube will be fragile, especially the non-guided structure float is used for gas. Metal tube rotameters have no risk of cone breakage. Compared with glass tube rotameters, the operating temperature and pressure range is wide. Most structural rotameters can only be used in pipeline installations with bottom-up vertical flow. Disadvantages: The application of rotameter is limited to small and medium pipe diameters. The ordinary full-flow rotameter cannot be used for large pipe diameters. The maximum diameter of glass tube rotameter is 100mm, and the metal tube rotameter is 150mm. Larger pipe diameters can only be used Split flow meter. When the fluid used is different from the factory calibration fluid, the flow indication value should be corrected. The float flowmeter for liquid is usually calibrated with water, and the gas is calibrated with air. If the actual fluid density and viscosity are different, the flow rate should deviate from the original graduation value, and it needs to be converted and corrected, which is relatively complicated to use. The above is a summary of the advantages and disadvantages of the float flowmeter. If you have other questions or needs about the flowmeter, you can contact the flowmeter manufacturer and we will serve you wholeheartedly. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Analysis of the Advantages and Disadvantages of Float Flow Meters'

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