What is the formula used to calculate the beta ratio?

The beta ratio is a key parameter used to assess the effectiveness of filtration in systems, particularly in hydraulic and lubrication applications. The formula to calculate the beta ratio is indeed derived from the relationship between the number of particles upstream of the filter and the number of particles that have passed downstream of the filter.

In the correct formula, the beta ratio is represented as the ratio of the number of particles present upstream (before filtration) to the number of particles found downstream (after filtration). This ratio indicates the efficiency of the filtration process: a higher beta ratio signifies a more effective filter, as it reflects a significant reduction in the number of particles passing through the filter.

Understanding this relationship is crucial for reliability engineers, as it allows them to evaluate and optimize filtration systems to prolong equipment life and enhance performance.