Distinguish between mechanical gauges and manometers and what are the types of mechanical gauges?

Mechanical gauges and manometers are both devices used to measure pressure, but they differ in their design and operation.

Mechanical gauges typically use a mechanical mechanism, such as a spring or diaphragm, to measure pressure. These gauges often have a dial or pointer that indicates the pressure reading. Mechanical gauges are commonly used in industrial applications and are known for their durability and reliability.

Manometers, on the other hand, are devices that use a liquid column to measure pressure. The height of the liquid column in the manometer is directly proportional to the pressure being measured. Manometers are often used in laboratory settings and are known for their accuracy in measuring low pressures.

Types of mechanical gauges include:

1. Bourdon tube gauge: This type of gauge uses a curved tube that straightens out as pressure increases, causing a pointer to move along a scale to indicate pressure.

2. Diaphragm gauge: This gauge uses a flexible diaphragm that deforms under pressure, causing a pointer to move and indicate pressure.

3. Bellows gauge: This gauge uses a bellows-like structure that expands or contracts under pressure, causing a pointer to move and indicate pressure.

4. Piston gauge: This gauge uses a piston that moves in response to pressure changes, causing a pointer to move and indicate pressure.

Overall, mechanical gauges are more versatile and can measure a wider range of pressures compared to manometers. Manometers are typically more accurate for measuring low pressures.