gaugedruk

Gaugedruk, also known as gauge pressure, is the difference between the absolute pressure of a system and the local atmospheric pressure. It is a common way to express pressure, especially in industrial and engineering applications, because it directly relates to the force exerted by the fluid or gas within a system relative to its surroundings. Absolute pressure is the total pressure measured from a perfect vacuum, while atmospheric pressure is the pressure exerted by the Earth's atmosphere at a given location. Therefore, gaugedruk = absolute pressure - atmospheric pressure.

If a system's pressure is lower than the surrounding atmospheric pressure, the gaugedruk will be negative, and this is often referred to as vacuum pressure. For example, a vacuum cleaner creates a low-pressure area, resulting in negative gauge pressure. Conversely, if the system's pressure is higher than atmospheric pressure, the gaugedruk will be positive. Tire pressure gauges typically measure in pounds per square inch (psi) gauge, indicating how much pressure is inside the tire above the ambient air pressure. Understanding gaugedruk is crucial for safe operation and accurate measurement in many fields.