Below we list and describe the most common Filters by type.
Air Filters are systems or components that remove particulates from air as it passes through filtering elements and can be complete systems or replacement elements alone. Key specifications include the intended application, physical size, filter type, filter media, and air flow rate. Air Filters are used in systems that require particulate-free air. They are used also to clean the air before exhausting it. Air Filters system usually consists of a filter element and the housing that contains the element. They come in shapes for specific applications such as automobile engines, cleanrooms, range hoods, or furnaces. An air filter can remove a variety of filtrands including dusts, fumes, oils, and bacteria.
Electronic Filters
Electronic Filters are used primarily to process electronic signals by removing unwanted frequency components or enhancing others. They usually operate at frequencies below RF (radio frequency). Typical operating frequencies ranges are AF (audio frequency) or IF (intermediate frequency), both of which are power frequencies. There are many types of, and functions for, electronic filters including passive or active, analog or digital, and low pass and high pass. Electronic filters are also used to minimize or eliminate electrical noise.
EMI/RFI Filters
EMI/RFI Filters are electrical devices that eliminate or minimize EMI (electromagnetic interference) or RFI (radio frequency interference) within a system. Key specifications include the intended application, filter type, electrical characteristics including voltage, current, and frequency ratings, as well as bandwidth. EMI/RFI filters are used primarily in electronic and telecommunication applications to minimize or eliminate EMI or RFI signals that interfere with the performance of an electrical product or system. The filter is normally placed between an AC power line and the equipment requiring protection. Versions can also be placed on PCBs, incorporated in connectors, or used as stand-alone components for mounting in utility cabinets. The filters may also work to eliminate EMI/RFI emissions from the equipment.
Fluid Filters
Fluid Filters are devices or systems that remove unwanted substances from fluids as they pass through the filtering elements. They may include complete systems or the replacement elements alone. Key specifications include the intended application, filter type, filter media, filtrate and filtrand, particulate size, and flow rate. Fluid filters are used primarily in any system that requires the fluid to be free of particulates or debris, either to protect the equipment or to clean the fluid before it is discharged into the environment. A fluid filter system usually consists of a filter element and a housing. They come shaped for specific applications, such as engine oil filters, cooling system filters, and metalworking fluid filters. The filter media can be made of a variety of materials including cloth, foam, carbon, sintered metals i.e. stainless steel, etc.
FUEL FILTERs are devices that remove unwanted materials from a fuel system as the fuel passes through it and may include a complete system or the replacement element. Key specifications include the intended application, filtrate, particulate size, and flow rate, as well as the physical dimensions. FUEL FILTER are used primarily to filter debris or unwanted substances from fuel to protect the equipment as well as allowing the fuel to burn more efficiently. The filters are usually designed for a specific application, such as a diesel or aircraft engine, or for the filling of tanks, etc., and are available in a variety of shapes and sizes depending on the required application.