Friday, 03 August 2018 12:41

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How to choose the correct Filter?

With a built-in magnetic frame, Computer and Electronic dust filters fits over the air intakes of your electronic or computer equipment. It is designed to fit onto computer cases and needs no special screws or skills to attach.

The intake vents we refer to are the grills or ventilation holes in your computer's case where cooling air enters the case. Some of these vents may have fans mounted behind it to direct the airflow in any specific direction and others are unfanned. To determine which vents are intakes, it is suggested to make use of a sheet of paper. With the computer or electronic unit switched on and running, loosely hold a sheet of thin paper in front of every vent opening or grill. If the sheet moves closer to the case, and gets sucked against it, then you would know that this vent is an intake vent and needs to be filtered. Choose the filters that would best cover the openings.


Dust can however enter the case through a myriad of other openings in the case, such as Optical Drives, USB and other ports that will be very hard to filter. The solution is in setting up your system to be positive pressure and to filter the intakes. In short this means that more air must enter the case where it can be filtered so that the higher pressure inside the case will leak out of every crack and port in the casing so stopping dust from entering there.

Computer Air Filters fits by way of a magnetic frame that is part of its structural design. This would adhere directly to the case and if the case is non-ferrous (it has no iron in its composition so that a magnet is not attracted to it) we supply you with a peel and stick magnetic frame (optional extra) that is fitted onto your PC case, around the air intake area. Dust Filter will attach to this frame, making it easy to remove and clean when necessary. The mesh used for filtering is a very durable high precision medical grade mesh. 

USING FILTERS ON NON- FERROUS SURFACES
The extra magnets or ferrous tape that is supplied with the filters (optional extra) are for use on non-ferrous cases like those made of aluminium or acrylics. Most distributors will include and send it as a unit, but make sure when you place your order.

AVOID THE FOLLOWING
• Fitting PC Dust Filters over exhaust vents.
• Expose PC Dust Filters to strong magnets as this will demagnetize the built-in magnet or weaken it. Exessive heat will tend to do the same.
• Do not bend PC Dust Filter sharply as this might cause creases in the mesh that will be difficult to remove.

You may ask why not just stick the filter to the case? The reason is that Dust Filters are re-usable and it was designed to make cleaning of the filter as easy as possible as this operation could be more frequent than expected, depending on its location and conditions. 

How to choose the correct Filter.
When choosing the filter which is best suited for your needs, there are a few categories to look at. These categories include:

Standard Filters - Filters designed to fit all standard sized fans. Various sizes and shapes.

Square Filters - Filters that is square in shape and is available in different sizes.

Rectangular Filters - Filters that is rectangular in shape and is available in different sizes.

Round Filters
- Filters that is round in shape and is available in different sizes.

Custom Filters - This section allows you to design filters to fit your exact needs. Filters designed by you to any specification that you may require in any shape, colour and size.

These filters can be ordered in a variety of frame colours and a choice between black or white filtering mesh.

 Consider the following when choosing your filter, then decide.
1. Determine where the air intake vents on the unit are situated. All intake vents should be filtered.
2. Measure the length and width of the air intake vents. Measure the distances 1 (O/D) & 2 (I/D) shown in the figure below. The minimum frame size is 10mm. This has to do with the structural integrity of the filter.           Sometimes it will be better to choose a bigger sized filter to make sure that all the holes around a fan is covered.
3. Choose a filter from the https://www.computergadgets.co.za/shop/dust-filters.html that corresponds to your measurements or you can e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. your exact requirements if you require any     custom-made filters.
4. Determine if the area where the filter is needed is ferrous or non-ferrous. Ferrous cases contain iron (Fe) and magnets will be attracted to it. Non-ferrous cases are made of substances like aluminium and acrylics. Magnets will not hold to these, so you will have to indicate "non-ferrous" from the dropdown list when you place an order. These filters come with an extra magnetic frame/ ferrous tape that must be peeled and stuck to the case around the intake vent that needs to be filtered. The filter will adhere to this magnetically.
5. Install the free Filter Alarm software that can be downloaded. Keep an eye on the filters to determine how regularly it needs cleaning. Set the alarm accordingly. 

Quick Guide on How to Choose
1. Choose Shape
2. Choose Size
3. Choose Frame colour
4. Choose Mesh colour 
5. Choose Ferrous or Non-ferrous
6. Click "Add to Cart" and follow the checkout process. 

WHERE TO USE DUST FILTERS
Although Dust Filters are mainly used for keeping dust out of computer equipment, 
it may be used to protect all electronic devices from the ingress of dust and dirt. 

These include:

  • Computers, UPS's and printers

  • Telecommunication devices and cabinets

  • Any size U rack mounted modules and cabinets

  • Audio-visual devices and studio equipment

  • Projectors and cinema equipment

  • Home and professional sound equipment

  • Televisions and home entertainment devices

  • Satellite Decoders

  • All industrial electronic equipment like CNC controllers, laser cutters/engravers, chillers etc.

  • All electronic laboratory equipment

  • Welding equipment like Inverters, Mig, Tig and laser equipment

  • Medical electronic equipment

  • Base station amplifiers and receivers

  • Household and workshop electronic devices and equipment

  • Many more...

Read 375 times Last modified on Friday, 03 August 2018 12:58
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