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20 Cards in this Set
- Front
- Back
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What is the diameter in microns of the largest spherical particle that will pass through the filter under a certain test condition? |
absolute filtration rating |
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Most filter assemblies used in modern aircraft are of what type? |
T-type |
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The filter element may be of the, |
1) 5-micron non-cleanable 2) woven mesh 3) micronic 4) porous metal 5) magnetic type |
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Which filter elements are usually designed to be cleaned and reused? |
porous metal, woven mesh, and magnetic filter |
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5-micron non-cleanable filter element are particularly effective in controlling particles in what size range? |
1 to 10 micron |
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The most common 5-micron filter medium is composed of what? |
organic or inorganic fibers integrally bonded by epoxy resin and faced with a metallic mesh |
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Red differential pressure indicator button raises, |
3/16 inch when differential pressure exceeds 70 (+/-10) PSI |
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Filter bypass relief valve opens at a differential pressure of, |
100 (+10) PSI |
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Woven wire-mesh filter are generally rated as_____________ and can be cleaned and reused. |
15 or 25 micron (absolute) |
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Micronic filter was designed to remove 99% of all particles______________in diameter or larger. |
10 to 20 microns |
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The micronic filter assembly contains an___________ to prevent possible element collapse or system starvation. |
integral bypass valve |
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Sintered bronze filter is generally rated at____________, but has some removal capability down to 5 microns. |
25 microns (absolute) |
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Sintered bronze filter element consist of what? |
minute bronze balls joined together as one solid piece |
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The joining of the balls in sintered bronze filter element is known as the, |
sintering process |
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What element can be used to replace both the primary and secondary elements in most two-stage filter assemblies? |
noncleanable single-stage |
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Common sizes filter assemblies used in SE are, |
10, 20, and 30 gpm |
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SE filter assemblies are equipped with differential pressure indicators and are preset to activate with an element pressure drop of, |
100 +/- 15 PSI |
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In some button type indicators, what prevents operation of the indicator below a certain temperature? |
thermal lockout device |
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Verification of loaded filter indications is particularly important with button-type indicators as they may have been falsely triggered by, |
mechanical shock, vibration, or cold start |
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Differential pressure indicating devices have many configurations, including |
electrical switches, continuous-reading visual indicators (gages), and visual indicators with memory |
