| 摘要 |
A fluid flowmeter for converting a fluid flow into an electrical output signal, includes a float which is moved by the fluid flow against the action of a spring, to vary the amount of light transmitted for a light source to a photosensitive device. The flowmeter is primarily for use in a miles-per-gallon meter for an automobile, the output signal from the flowmeter being processed with a signal indicative of the speed of an automobile to provide a miles-per-gallon indication.
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