What is the relationship between filter condition and differential pressure?

The correct answer highlights that increased differential pressure is an indicator of blockage in the filter. A filter's primary function is to remove contaminants from the fluid passing through it, and as particles accumulate, they create resistance to flow. This buildup leads to an increase in the pressure difference between the inlet and outlet sides of the filter.

When a filter is clean, the flow of fluid is relatively unrestricted, resulting in a lower differential pressure. As the filter becomes clogged with debris, the flow is impeded, leading to a surge in differential pressure readings. Monitoring this pressure difference is essential for maintaining optimal filter performance; an unusually high differential pressure signals the need for filter maintenance or replacement to prevent compromised system operation.

Understanding this relationship is crucial in various engineering applications, as it helps engineers make informed decisions about system maintenance and filter management.