Final answer:
A dual metering dispensing unit has two meters for measuring flow rate or volume, and one pump for dispensing two different fluids at a precise ratio.
Step-by-step explanation:
The type of dispensing unit described is typically referred to as a dual metering dispensing unit. This kind of dispensing unit is frequently employed in scenarios where two different fluids need to be dispensed in a precise ratio, although they share the same pump mechanism. The single pump is capable of drawing two fluids from separate sources, and the two meters measure the flow rate or volume of each fluid independently to ensure the correct proportions are dispensed.
One common application of such a system could be in fuel dispensers that provide a mix of different grades of gasoline, or in chemical processing where mixing two reactants is necessary. Despite the varied applications, the key aspect that defines these units is the presence of two meters and one pump within the same unit.