The operation of an ion-exchange unit in which solutions are passed in at the bottom and out at the top of the container.
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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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REMOTE REFRIGERATING SYSTEM
Refrigerating system in which condensing unit is away from space to be cooled.
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CUTTING FLUID
Any fluid applied to a cutting tool to assist in the cutting operation by cooling, lubricating or other means.
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ASME SECTION VII SUBSECTION C6
Operation of boiler auxiliaries.
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GROUND LOG
A device for determining the course and speed over the ground in shallow water consisting of a lead or weight attached to a line. The lead is thrown overboard and allowed to rest on the bottom. The course over ground is indicated by the direction the line tends and the speed by the amount of line paid out in a unit of time.
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GYROCOMPASS
A compass having one or more gyroscopes as the directive element, and which is northseeking. Its operation depends upon four natural phenomena, namely gyroscopic inertia, gyroscopic precession, the earth's rotation, and gravity. When such a compass controls remote indicators, called GYRO REPEATERS, it is called a master gyrocompass.
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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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FLOW RATE
The volume, mass, or weight of a fluid passing through any conductor per unit of time.
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BARREL
A unit of liquid volume of petroleum oils equal to 42 U.S. gallons or approximately 35 Imperial gallons.
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ANGSTROM UNITS
A unit of wave length, equal in length to one ten billionth.
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