Which brand of Roots flow meter is better?
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Could everyone please recommend which brand of Roots flow meter is better? Can a Roots flow meter be used if there are small particles in the medium? Are there any other gauges available that offer high precision?
The Roots rotameter, also simply referred to as a rotameter, is a high-precision measuring instrument primarily used for the continuous or intermittent measurement of liquid flow in pipelines; it requires a clean medium. Rotary flow meters should not be used when there are small particles in the medium. Hefei Smith Flow Meter Co., Ltd
It is a positive-displacement flow meter used to accurately measure the flow rate of the fluid flowing in a pipeline, either continuously or intermittently. The better ones are those produced by Chongqing Naidé Industrial Co., Ltd. http://www.naiddecq.pmnet.cn There are cheaper options produced by Harbin Longjiang Flow Meter Factory. No. 46, Haxi Street, Nangang District, Harbin City, Heilongjiang Province. Volume flow meters have very high accuracy, but their maintenance costs are also high, and there is a significant amount of work required for repairs. Rotary vane pumps cannot be used with solid particles in the medium, as they can get clogged easily. The “screw gauge” can also be considered; it is a volumetric type as well and boasts high accuracy.
The twin-rotor flowmeter is also a positive-displacement type, and it is better than gear and elliptical gear flowmeters. Hefei Jingda Instrument Factory has them, divided into domestic and joint-venture products. There is Shanghai Yino, and there is also one in Tianjin. Among domestic scraper flowmeters, the best ones are likely those produced by Dandong Jihai, which are directly modeled after those of the internationally renowned Smith brand. Tongbo’s ones will work too. The problem with scraper flowmeters is that they wear out very quickly; lubricating media such as crude oil and diesel can be used, but gasoline and liquefied gas cannot.
■High precision and good repeatability; not affected by changes in pressure or flow rate, with stable performance； ■No straight pipe sections are required before or after installation, making it suitable for use in spaces with limited space ； ■It features a low starting flow rate and a wide range, making it suitable for measuring gas flow rates with large fluctuations in load ；