Pressure

Pressure is defined as the force applied per unit area. It is measured in various units, including Pascals (Pa), pounds per square inch (psi), and bars. In industrial automation, pressure sensors and transducers are used to measure and control pressure in systems.

Types of Pressure

Pressure Calculations

Accurate pressure calculations are essential for process control and safety. Here are some common pressure-related calculations:

1. Conversion between Pressure Units

Pressure can be converted between different units using conversion factors.

Formulas:

Example Calculation:

2. Pressure Drop in Pipes

Pressure drop in pipes is a crucial factor in fluid dynamics, affecting the efficiency of fluid transport systems.

Formula: ΔP = f × (L/D) × (ρ × v²/2)

Example Calculation:

3. Boyle's Law

Boyle's Law describes the relationship between the pressure and volume of a gas at constant temperature.

Formula: P₁V₁ = P₂V₂

Example Calculation: