Metallum Tube Rotameter Used in Karachi,Pakistan

Mense Iunio MMXVIII, Unus e nostris in Pakistania, Karachi, fistula metallica egent ad oxygenium metiendum.

Eorum conditio laborat ut infra:
Pipe：φ70*5，Max. Fluo 110m3/h，Mini.flow 10m3/premendi laborans 1.3MPa，operans temperatus 30℃， pressio barometrica localis 0.1MPa.

Computum nostrum ut infra:
Oxygeni densi;
Sub Standard condition: ρ20=1.331kg/m3
Sub conditione laborantis: ρ1=ρ20*(P1T20/PNT1Z)=1.331*{(1.3+0.1)*(27*+20)/[0.1013*(27*+30)*0.992]｝=17.93kg/ m3
Real O:
QS=Q20ρ20/ρ
QSmax=Q20maxρ20/ρ1=110*1.331/17.93=8.166
QSmin=Q20minρ20/ρ1=10*1.331/17.93=0.742
③ Tubus metallicus rotameter verae conditionis operandi formula:
QNmax=QSmax/0.2696=8.166/0.2696=30.29
QNmin=QSmax/0.2696=0.742/0.2696=2.75

Sub nostro diligenter calculus, processus excellens et proprietas qualitatis, post institutionem perfecte operatur, finem operandi efficientiam usoris emendavit, qualitas productorum a nostris mos est valde agnita.