Fluid Statics

Inverted U-Tube manometer:
The manometer fluid used in this type of manometer is lighter than the working fluids. Thus the height difference in two limbs is enhanced. This is therefore suitable for measurement of small pressure difference in liquids. For the configurations given in Fig. L-8.1.  
Fig. L-8.5 Inverted Manometer

                                           

                          Or           

If the two points A and B are at the same level and the same fluid is used, then P 1 = P 2 = P and h 2 + h 3 =h 1 .

The above equation becomes     

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