Pressure Measurement by U tube Manometer, Piezometer and Single Column Manometer | Shubham Kola

Manometers are pressure measuring devices that balance a fluid column to measure pressure at a point in a fluid. They are commonly U-shaped tubes filled with liquid, gas, or steam. Manometers are classified into simple manometers and differential manometers. This video focuses on three simple manometers: Piezometer, U-tube Manometer, and Single Column Manometer.

The Piezometer is the simplest type of manometer, also known as an open tube manometer. One end is connected to the point where pressure is to be measured, and the other end is open to the atmosphere. The rise in the liquid column directly indicates the pressure at that point, which can be evaluated using a specific formula.

The U-tube Manometer consists of a U-shaped glass tube. One end is connected to the point of pressure measurement, and the other is open to the atmosphere. It typically contains mercury or another liquid with a higher specific gravity than the fluid being measured. The video explains formulas for measuring both gauge pressure and vacuum pressure using the U-tube manometer, detailing the roles of liquid heights (h1, h2) and densities (row1, row2).

The Single Column Manometer comes in two types: Vertical and Inclined. In the Vertical type, one limb features a large container (reservoir), while the other is a simple tube. The height of the liquid rise in the tube determines the pressure. The video provides a formula to calculate pressure at point A, incorporating h1 (height of low-density liquid), h2 (height of high-density liquid), gravitational acceleration (g), and densities (row1, row2).

The Inclined single column manometer is similar to the vertical type but with the simple tube inclined at an angle. The rise of fluid in this inclined tube determines the pressure. A formula is presented for calculating pressure at point A, where h2 (vertical rise of heavy liquid) is L sin theta (L being the length of liquid moved, and theta the inclination angle), along with h1 (height of low-density liquid), densities, and gravity.