The road of yellow brick is an element in the novel The Wonderful Wizard of Oz by L. Frank Baum, with additional such roads appearing in The Marvelous Land of Oz and The Patchwork Girl of Oz. The 1939 film The Wizard of Oz, based on the novel, gave it the name by which it is better known, the Yellow Brick RoadFlowrate is also a very important measurement as in many modern processes; the flowrate is necessary to calculate many important factors. Because of this it is vital that an accurate and precise measurement method exists. In the following paragraphs, two forms of measurement are discussed. One method, a rotameter, is suitable to use for both gas and liquid flow while the other, a magnetic flow meter, can only be used for liquid flow. Similarly to the previous measurement devices, the information was collected from various sources from both Knovel database and a Google search. Rotameter: …show more content…
A rotameter is a vertical tube whose diameter decreases as the length increases. The bottom of the rotameter has the smallest diameter. There is a moving float that rises as the flowrate increases. It reaches a dynamic equilibrium position when the weight of the float is perfectly counteracted by the up thrust of the fluid and buoyancy forces. Thus the position of the float can be used to determine the flowrate. Typically each rotameter is sized for a specific fluid based on the density and viscosity of the fluid and the height of the float and be directly correlated to the flowrate12. Figure 16 below depicts the basic set up of a