A system is equipped with two pressure gages and a manometer, as shown in Fig. P3–148. For Δh = 12 cm, determine the pressure difference

Solution to 140P

Step 1</p>

We need to find the pressure difference between two pressure gages for a differential height of Δh=12 cm as given in the question.

Given data:

Specific gravity of manometer fluid=2.15

Specific gravity of oil=0.87

Differential height in manometer=0.12m

Standard density of water=1000kg/m3

Equations used:

Specific gravity of a fluid

is the density of fluid.

is the density of water(standard liquid)

Pressure

g=acceleration due to gravity

h=height of liquid

Step 2</p>

The pressure increases as we go down the tube and decreases as we go upwards the tube. Thus adding the pressures in the system from P2 to P1.

is the pressure at the first gage.

pressure at second gage.

is the pressure at the manometer.

is the pressure above oil.