Differential pressure, often represented as P, signifies the variance in pressure between two distinct points within a system or process. This measurement quantifies the force exerted per unit area difference. For example, in a pipeline, it is the difference in pressure observed between the inlet and outlet of a filter, pump, or any other component causing a pressure drop.
Understanding this difference is crucial for monitoring system performance and efficiency. Elevated readings, for instance, can indicate clogging or increased resistance in a system, potentially leading to reduced throughput or equipment damage. Historically, monitoring this differential has been employed across various industries, from water treatment and HVAC to aerospace and chemical processing, to optimize operations and prevent failures.