Rotameter, Flowmeter

Industrial flow measurements include measuring of flow rate of solids, liquids and gases. There are two basic ways of measuring flow ; one on volumetric basis and the other on weight basis. Solid materials are measured in terms of either weight per unit time or mass per unit time. Very rarely solid quantity is measured in terms of volume. Liquids are measured either in volume rate or in weight rate. Gases are normally measured in volume rate. In this chapter, the flow measurements of liquids and gases will be discussed in detail rather than that of solids.