emulsion : a mixture in which one liquid, termed the dispersed phase, is uniformly distributed (usually as minute globules) in another liquid, called the continuous phase or dispersion medium. In an oil-in- water emulsion, the oil is the dispersed phase and the water the dispersion medium in a water-in-oil emulsion, the reverse holds. equilibrium : a state of balance between opposing forces or actions that is either static or dynamic. fitting : a small, often standardized part, such as a coupling or gauge, installed in a larger apparatus. flow monitor: any device that senses the state of fluid flowing in a pipeline or other container. flow-proportional sample : a sample taken from a pipeline during the entire period of transfer of a batch at a rate that is proportional to the rate of flow of the liquid in the pipeline at any instant. flow rate : the speed, or velocity, of fluid flow through a pipe or vessel. fuel oil : a petroleum product, such as diesel fuel, that has a relatively low volatility. gasoline : a volatile, flammable liquid hydrocarbon refined from crude oils and used universally as a fuel for internal combustion, spark-ignition engines. gauge : a device (such as a pressure gauge) used to measure some physical property. gauge : to measure size, volume, depth, or other measurable property.
gauge glass : a glass tube or metal housing with a glass window that is connected to a vessel to indicate the level of the liquid contents. gauge hatch : the lidded opening in the top of an oil or oil product storage tank through which gauging, and sampling operations are carried out.
delivery tube : a small device used inside a bottle when tap sampling. The tube allows for the delivery of liquid from the tank into the bottle with little or no splashing. demulsifier : a chemical with properties that cause the water droplets in a water-in-oil emulsion to merge and settle out of the oil or oil droplets in an oil-in-water emulsion to coalesce, when the chemical is added to the emulsion. Also called emulsion breaker. density : the mass or weight of a substance per unit volume. Relative density, API Gravity and pounds per gallon are examples of units of density. diesel fuel : a light hydrocarbon mixture for diesel engines, similar to furnace fuel oil, it has a boiling range just above that of kerosene. digital readout : a type of register on which the information is indicated by directly readable characters, particularly numerals.
gauge height : see reference height.
gauge pipe : a vertical pipe that extends from the gauge hatch to the bottom of the tank or to the datum plate. gauge point : 1. The point at which a tape is lowered and read on a tank, usually at the rim of the hatch, manway, or expansion dome.
2.A point to which all subsequent measurements are related
3.The point from which the reference height is determined and from which ullages or innages are taken.
displacement meter : a meter in
gauge bob : a graduated weight
which the measuring element measures a volume of liquid by mechanically separating the liquid into discrete quantities of fixed volume and counting the quantities in volume units.
used with a graduated tape to measure the height of the liquid in a storage tank. The weight of the bob keeps the tape taut in order to ensure a correct reading of the liquid level.
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