Although our company mainly produces epoxy coated wire mesh for hydraulic filter element,but we have worked with the hydraulic filter manufacturer for more than 20 years,so we know very well about the hydraulic filter.In order to help filter buyers better understand the hydraulic filter element,I will continue to update the knowledge of hydraulic filter element.Today we understand the most important index of hydraulic filter element:Beta Ratio.
Test beta ratio comes from the Multi-pass Method for evaluating performance of a fine filter element (ISO 16889:1999).
Before filtration we count the number of particles in the upstream,suppose the number is (n)upstream.
After filtration we count the number of particles in the downstream,suppose the number is (n)downstream.
Beta ratio=(n)upstream/(n)downstream
Example: A hydraulic filter element
Filtration accuracy:3 Micron
Upstream:1,000,000
Downstream:2000
Beta ratio=1,000,000(upstream)/2,000 (downstream)=β500
Beta ratios can also be expressed as an efficiency percentage – efficiency % = (Beta minus 1) / Beta * 100. This Beta2000 element is 99.8% effective.
If you choose a hydraulic filter that meets your own requirements,beta ratio is a very important reference data.If you have any other question about the hydraulic filter element can email me !
