Cartridge Filters are best used in applications such as: bulk chemicals, petrochemicals, water purification, hydraulic fluids, cosmetics/pharmaceuticals, reagent grade chemicals, paints, varnishes, semiconductors, sugars, electric utilities and are often used as final filtration or after other filters.
Cartridge filters can be surface or depth-type filter: depth-type filters capture particles and contaminant through the total thickness of the medium, while in surface filters (that are usually made of thin materials like papers, woven wire, cloths) particles are blocked on the surface of the filter.
Surface filters are best if you are filtering sediment of similar-sized particles. If all particles are five micron, a pleated 5-micron filter works best because it has more surface area than other filters. Compared with pleated surface filters, depth filters have a limited surface area, but they have the advantage of depth.
Generally, if the size of filter surface is increased, higher flows are possible, the filter last longer, and the dirt holding capacity increases. Cartridge filters are normally designed disposable: this means that they have to be replaced when the filter is clogged.
Filters keep air and fluids clean from contaminants which cause wear and eventual failure of equipment parts. When unscheduled downtime needs to be minimized or eliminated, consider using efficiency rated filter products which specify performance. Don’t take unnecessary risks with non-rated filters.
Filters equipped with by-pass and pressure indicators help you get the maximum life potential from your investment. How do you know when it is time to change the filter element if you don’t use indicators? Did your equipment come from the factory with by-pass and pressure indicators? Do you rely on equipment manual intervals for filter changes? How does the manual know when elements should be changed? Did it check the indicators and perform a lubricant analysis to tell you it was time?
The filter with the best price may not be the better filter. Examine filter ratings before buying lower priced filters. Determine what will be sacrificed for lower price. Are micron and efficiency ratings the same? What will happen to system contamination levels? Use contamination measurements and efficiency ratings instead of price to make the best decision.
Lubricant analysis helps our customers maintain and measure equipment, filter, and lubricant performance. One key for longer equipment and fluid life is fluid cleanliness. We recommend using the International Standards Organization Cleanliness Code 4406. Contaminants in the 2, 5, and 15 micron range are measured for a baseline comparison against standards for your equipment, filters, and lubricants. Contamination levels measured outside your standards range are flags for action.
The human eye can see 40 micron contaminant particles, magnification is required below this. Can you look at lubricants and determine if they are clean enough for your system? How do you know if your 10 micron filters are working properly if you don’t use lubricant analysis, by-pass and pressure indicators?
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