Abstract
Summary
(1) A simplified and improved flow rate meter is described. The instrument is basically a rotameter, the float of which is vertically displaced in proportion to the rate of flow and its position detected electromagnetically. The rate of flow is indicated on a microammeter and a recording galvanometer. The metering chamber and float are designed so that viscosity effects are minimized and the pressure drop through the instrument reduced to less than 3.5 cm of water at any rate of flow. (2) To obtain maximum sensitivity over a given flow range, different metering chambers, with capacities ranging from 100 cc to 3 liters per minute, can be used interchangeably with one detecting unit.
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