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Title: Mass Flow Metering
Author: Charles m. I1ALSELL
Source: 1965 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1965
Abstract: Within the last fifteen years, many methods of approaching a satisfactory mass flowmeter have been proposed. A quick survey of my companys patent files reveals no less than 50 patents on mass flow measurement or improvements on mass flowmeters. Mass has been defined as the measure of the quantity of matter in a body. A student of the physical sciences would state that mass can be measured by comparing the velocity changes that result when a body impinges on a body of standard or known mass. This theory is rightly used in the design of mass flowmeters, but the layman is more accustomed to determining mass by methods such as the laboratory balance or other springless type scales wherein he compares an unknown mass to a standard mass by balancing the two in the earths gravitational field. Actually this latter process is what we call weighing, and it is incorrect to think that weight and mass are the same thing. For most practical purposes on the earth, they may be closely correlated

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