Particles of calcium carbonate in vertebrates inner ears involved in sensing gravity and movement.
Related Terms |
CUTTING WEAR
Comes about when hard surface asperities or hard particles that have embedded themselves into a soft surface and plough grooves into the opposing harder surface, e.g., a journal.
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ISO SOLID CONTAMINANT CODE (ISO 4406)
A code assigned on the basis of the number of particles per unit volume greater than 5 and 15 micrometers in size. Range numbers identify each increment in the particle population throughout the spectrum of levels.
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ADSORPTIVE FILTRATION
The attraction to, and retention of particles in, a filter medium by electrostatic forces, or by molecular attraction between the particles and the medium.
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HYDROMETER
An instrument for determining either the specific gravity of a liquid or the API gravity.
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AGGLOMERATE
The clustering together of a few or many particles into a larger solid mass.
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API GRAVITY
A gravity scale established by the American Petroleum Institute and in general use in the petroleum industry, the unit being called 'the A.P.I. degree' .
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FATIGUE PLATELETS
Normal particles between 20 and 40 microns found in gear box and rolling element bearing oil samples observed by analytical ferrography. A sudden increase in the size and quantity of these particles indicates excessive wear.
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FILTRATION (BETA) RATIO
The ratio of the number of particles greater than a given size in the influent fluid to the number of particles greater than the same size in the effluent fluid.
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FATIGUE CHUNKS
Thick three-dimensional particles exceeding 50 microns indicating severe wear of gear teeth.
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BETA RATING
the method of comparing filter performance based on efficiency. This is done using the Multi-Pass Test which counts the number of particles of a given size before and after fluid passes through a filter.
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