Module 2 Flashcards
a method used to filter and remove large or heavy contaminants from hydraulic fluid
Settling
a rating of the percentage of contaminants of a particular size that a strainer or filter can stop from entering a system
Degree of Filtration
a unit for measuring the dimensions of fine particles; one-millionth of a meter
Micron
the relationship between the size of a strainer or filter opening and the size of the contaminant particles
Dirt Capacity
a medium that collects particles on a single surface; usually used with strainers
Surface Medium
a medium that collects particles on a number of surfaces arranged in layers; usually used with filters
Depth Medium
If hydraulic fluid is to function properly, it must be _____.
Clean
Water is _____ than hydraulic fluid.
Heavier
The rating of a filter or strainer that removes almost all of the particles up to a certain size is called its _____ rating.
Nominal
Fine contaminant particles usually are measured in _____.
Microns
When contaminants begin to pass through a filter, the maximum allowable _____ can be exceeded.
Pressure Drop
Name the two types of filter media used in hydraulic systems.
Surface, Depth
Abrasion migration generally takes place as a result of _____.
Vibration
Most strainers used in hydraulic systems have a surface medium made of _____.
Porous Wire Mesh
Inlet strainers should be mounted far enough below the fluid surface of a reservoir to prevent a(n) _____ from forming.
Suction Vortex (Whirlpool)
