What does the beta ratio measure?

The beta ratio is primarily used to evaluate the efficiency of a filter, specifically in regards to its ability to remove particles from a fluid. It is defined as the ratio of the number of particles upstream of the filter to the number of particles downstream after the fluid has passed through the filter. A higher beta ratio indicates a more efficient filter, as it signifies a greater percentage of particles have been removed from the fluid.

While this measure is important for understanding filter performance, it distinctly does not apply to the efficiency of hydraulic systems or pumps as a whole, as those are assessed through different parameters and calculations. Specifically, evaluating pump efficiency often involves examining flow rate, power input and output, and other mechanical considerations rather than particle filtration. Likewise, assessing the overall efficiency of a hydraulic system encompasses various components beyond just filtering capabilities. Thus, the focus on particle capture underscores why the beta ratio specifically pertains to filter efficiency.