Questions regarding the measurement issues of metal rotor flowmeters
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Hello, everyone who is into the sea! The process piping is 1/2 inch, and the metal rotameter is 1 inch. The process interface of the metal rotor flowmeter is designed with a 1/2-inch measurement tube, while the diameter is 1 inch. Does such a design have an impact on the measurement accuracy of the metal rotor flowmeter? (The medium is carbon dioxide; temperature is 30 degrees, pressure is 3–5 kilograms; flow rates range from 24–51 Nm3/h, 33–68 Nm3/h, 57–119 Nm3/h, to 98–204 Nm3/h.) Thank you very much!
Rotary flow meters are generally designed with a diameter that matches that of the pipe. I believe that if the diameter of the rotary flow meter is larger than that of the pipe, it will undoubtedly reduce the accuracy of the meter, as the range of measurements is likely to be reduced compared to the actual measurement range of the meter.
It should work; the impact on accuracy won’t be significant. After all, in a metal tube rotameter, the medium enters the measurement chamber vertically from below. To be honest, the accuracy of metal tube rotameters isn’t very high anyway: lol
It has no impact; just install it according to the standards… All the Kroni products we use can have their diameter reduced, so can’t they also have their diameter increased? Install vertically; ensuring a straight pipe section is sufficient
The principle of a rotameter is the same as that of a orifice plate; the difference is that in the rotameter it is the area that changes (while the differential pressure remains constant), whereas in the orifice plate it is the differential pressure that changes (while the area remains constant). In textbooks on chemical engineering principles, the discussion of rotameters is included in the section on differential pressure. . . . The caliber of the meter is determined by the flow rate (in line with the meter’s measurement speed), while the size of the process pipe is merely a reference. Thus, the impact of such precision can be understood. The upstream density of the poster is variable, but the meter is designed for a fixed density (the rotameter dial has markings indicating the operating density). If the flow meter is designed for a flow rate of 3KG, but the actual operating flow rate is 4, there will definitely be a reading error. @jiaguoyun