The sensitivity Sen of the manometer shown in Fig. P2.55 can be defined as

\[ \text { Sen }=\frac{h}{p_{R}-p_{L}} \]

Three manometer fluids with the listed specific gravities \(S\) are available:

Kerosene, \(S=0.82\);

SAE 10 oil, \(S=0.87\); and Normal octane, \(S=0.71\).

Which fluid gives the highest sensitivity? The areas \(\mathrm{A}_{R}\) and \(\mathrm{A}_{L}\) are much larger than the cross-sectional area of the manometer tube, so \(H \ll h\).

Figure P2.55

Transcribed Image Text:

PL TH H Fluid HR h Water T TML h h PR Water Yw Yw