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Metal Tube Rotameter Used in Karachi,Pakistan

2020-08-12
In June,2018,One of our customer in Pakistan,Karachi,they need the metal tube rotameter for measuring the oxygen.

Their working condition as below:
Pipe:φ70*5,Max. Flow 110m3/h,Mini.flow 10m3/h,working pressure 1.3MPa,working temperature 30℃,the local barometric pressure 0.1MPa.

Our calculation as below: 
①Oxygen density:
Under Standard condition:ρ20=1.331kg/m3 
Under working condition:ρ1=ρ20*(P1T20/PNT1Z)=1.331*{(1.3+0.1)*(27*+20)/[0.1013*(27*+30)*0.992]}=17.93kg/m3 
②Real Flow:
QS=Q20ρ20/ρ 
QSmax=Q20maxρ20/ρ1=110*1.331/17.93=8.166 
QSmin=Q20minρ20/ρ1=10*1.331/17.93=0.742 
③The metal tube rotameter real working condition formula:
QNmax=QSmax/0.2696=8.166/0.2696=30.29 
QNmin=QSmax/0.2696=0.742/0.2696=2.75 

Under our carefully calculation,excellent processing and strictly quality control,after installation,it works perfectly,it improve the end user’s working efficiency,the products quality is highly recognized by our customer.

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