ENME351_Lab_1

ENME351_Lab_1 - ENME 351, Section 010x Laboratory 1:...

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ENME 351, Section 010 x Laboratory 1: Introduction to Labview Date of Experiment : 2/1/2011 C.J. Gorrell Mark Mifsud Jeffrey Braun
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Instruments Used: Labview Microsoft Word Ice Water 2 Glasses thermocouple 10M-Ohm resistor SCC-68 connector block E XERCISE 1.1 Objective: The objective of this lab is to introduce the students to Labview. Through this lab, the students will learn how to create virtual instruments with Labview and then use the instruments to perform tests and acquire useful data.
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E XERCISE 1.2 Objective: The Objective of this exercise is to learn how a measurement device responds to changes in input, and then to consider data collection issues and learn how to interpret data. Procedures: Use a thermocouple and resistor connected in series to the terminal inputs of the connector block that is connected to the PC. Setup a Labview program to record data from the thermocouple in a time versus voltage chart. Place the thermocouple in an alternation of ice water baths, and room temperature water baths. Wait for readings to reach a steady state before alternating. Data:
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Analysis: Temperature (C) Measured Voltage (mV) Reference Voltage (mV) 0 -10 0 20 .6 .798 Noise amplitude: .15mV Signal amplitude: .05mV SNR= 20log(Asig/Anoise) = 20log(.05/.15) = 6.6dB From the data in the chart I can see that the thermocouple was able to show a response to a change in temperature that could be read in a form of voltage output. When dipped in ice water the thermocouple read a voltage of about -10mV, and in room temperature water the voltage read about .6mV. Q UESTIONS Note: keep these questions in your report, so we know what you’re answering.
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1) What were the main take-home messages from Error: Reference source not found? What was different about LabView than other programming languages? The take home messages for exercise 1.1, are that Labview is an application capable of creating a virtual experiment. By creating a block diagram we are able to see how Labview is able to interpret input and return an output based on the virtual
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ENME351_Lab_1 - ENME 351, Section 010x Laboratory 1:...

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