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How to Select a Magnetic Filter for Industry: 6 Parameters That Matter
A poorly chosen magnetic filter will either fail to capture what it should, or unnecessarily complicate operations.
The right selection is not complicated — you just need to know six key parameters of your system.
1. Media flow rate — the basic parameter that determines the filter size. A filter that is too small creates an undesirable pressure drop, one that is too large is oversized and unnecessarily expensive. Base your choice on the maximum operating flow rate, not the average.
2. Working pressure — the filter must withstand the pressure of your piping system without problems, including pressure spikes. Standard designs cover most industrial applications; specialised variants exist for high-pressure systems.
3. Type of medium — are you filtering oil, water, coolant, gas or an aggressive chemical? The type of medium determines the material design of the seals, the filter body and the magnetic core. What works in hydraulic oil may not be suitable for acidic environments.
4. Operating temperature — high temperatures reduce the magnetic performance of permanent magnets. For applications above 80 °C, a filter with heat-resistant magnets must be chosen, otherwise permanent demagnetisation and loss of efficiency is at risk.
5. Size and type of captured particles — fine particles require a stronger magnetic field than coarser wear fragments. If you do not know the exact size of the contaminants, a laboratory analysis of a medium sample or a free test with us will help.
6. Cleaning frequency and operating mode — manual cleaning requires regular maintenance and brief shutdowns. An automatic self-cleaning filter operates continuously without operator intervention. Suitable where continuous operation is required or where particle capture is high.
Not sure about some of the parameters? Just send us a sample of your medium or basic system data — contact us and we will deliver a free assessment within 3 working days.