Application case of metal rotor flow meter in oxygen measurement

Abstract: The application case information of metal rotor flowmeter in oxygen measurement is provided by excellent flowmeter and flowmeter manufacturers. When the metal rotor flowmeter measures gas, the scale is marked with the air in the standard state (20 ° C, absolute pressure 0.1013MPa). Therefore, when measuring the flow of oxygen, the flow range should be converted into the air flow in the standard state, and then according to Converted flow. More flowmeter manufacturers select models and price quotations. You are welcome to inquire. The following is the application case article details of metal rotor flowmeters in oxygen measurement. When the metal rotor flowmeter measures gas, the scale is marked with the air in the standard state (20 ° C, absolute pressure 0.1013MPa). Therefore, when measuring the flow of oxygen, the flow range should be converted into the air flow in the standard state, and then according to The converted flow range is selected according to the standard scale of the metal rotor flowmeter. The following is an example of the oxygen consumption in the riveting and welding workshop of a machinery factory. The parameters provided by the customer are as follows: pipe diameter: ￠70*5, maximum oxygen consumption 110m3/h, minimum oxygen consumption 10m3/h, working pressure 1.3MPa, working temperature 30 ℃, the local average atmospheric pressure is 0.1MPa. We calculate as follows: 1. Under the standard condition of oxygen densityρ20=1.331kg/m3 working conditionρ1=ρ20*(P1T20/PNT1Z)=1.331*{(1.3+0.1)*(273.15+20)/[0.1013*(273.15+30)*0.992]}=17.93kg/m32, actual flow: QS=Q20ρ20/ρQSmax=Q20maxρ20/ρ1=110*1.331/17.93=8.166QSmin=Q20minρ20/ρ1=10*1.331/17.93=0.7423, the flow correction formula under the actual use of the metal rotor flowmeter: QNmax=QSmax/0.2696=8.166/0.2696=30.29QNmin=QSmax/0.2696=0.742/0.2696=2.75 In the formula: ZS (ZSN) is the compressibility coefficient of the gas to be tested in the standard state (working state) (generally ZS≈ZSN); Qs is the actual flow of oxygen under working conditions; QN is the actual flow of air under standard conditions;ρN is the density of air under standard conditions (1.293kg/m3); PN is the standard atmospheric pressure; TN is the standard temperature 293.15K;ρSN is the density of oxygen under standard conditions (ieρ20); PS is the actual working pressure of oxygen (ie P1); TS is the actual working temperature of oxygen (ie T1). The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Application Case of Metal Rotameter Meter in Oxygen Measurement'

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