NC STATE UNIVERSITY Mechanical Engineering Systems MES 305 Dr. Bill Fortney Temperature Measurements using Thermocouples plentiful phase of the moon report format Laine Johnson Aaron Burge Lab undefiled June 20, 2011 Introduction The purpose of this research lab was to evidence the measure of liquid temperatures using thermocouples, the most common rule of measuring and controlling temperatures. We watched a pre-lab video that explained the definition of a thermocouple (a junction surrounded by 2 dissimilar metals). thence the video introduced the Seebek effect, the Peltier effect, the Thomas effect and the Law of negotiate Temperatures. During the lab we implementd thermocouples to demonstrate each of these effect and the Law of liaise Temperatures. Thermocouples are suitable for measuring over a big temperature range, up to 2300?. They are not suited for instruments that need passing precise and accurate measurements. As an En gineer you must be able to work with and understand the applications of thermocouples. Here is a jounce of applications that are well suited for the use of thermocouples: kilns, plash turbine exhaust, diesel engine motor engines and many gas-fed heating appliances (ovens and water heaters that make use of a pilot flame to ignite the main gas burner). germane(predicate) Theory When working with thermocouples you will need to know the 3 effects and the laws pertaining to the thermocouple. 1) The Seebek effect showed that a thermocouple produced a potential difference dominance (or emf), measured in millivolts, in the wire which in morsel caused a temperature difference.
There is a reproducible family between the emf and the temperatures (T1 and T2). Seebek effect ?AB = [?emf?T]opencircuit equation #1 Where A and B refer to the two materials that even out the thermocouple. emf is the voltage potential T...If you indigence to get a full essay, order it on our website:
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