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Construction of the Full-Scale Tagger Microscope (view source)
Revision as of 18:17, 14 December 2012
, 18:17, 14 December 2012→Thermocouple vs. Thermistor
==Thermocouple vs. Thermistor==
==Temperature Measurements==
Along with the LabView program, some of the more important components of bending fibers will be to determine the temperature of the water and to make that information available to the program.
At first, I had thought that our best bet as far as reading/recording water temperature was to make a thermistor (as seen below).
<gallery>
<gallery>
file:Thermistor.jpg|This is the same circuit as to the left, except it is free of a breadboard and water resistant.
file:Thermistor.jpg|This is the same circuit as to the left, except it is free of a breadboard and water resistant.
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Although this thermistor is reasonably accurate, I feel that it would be possible to have (already purchased) thermocouples read the temperature instead. The signal from the thermocouple would need to be amplified in order to be read by the DAQ we are currently using because the thermocouple produces voltages in the micro range. Using an operational amplifier and the right resistors I am confident that I would be able to achieve a strong enough signal from the thermocouple(given enough time). The remaining hurdle in this endeavor would be to tweak the LabView program to use the temperature-voltage relationship equation of a type J thermocouple instead of a thermistor.
Some great resources for thermocouple theory and circuitry can be found here:
[[media:The_Basics_of_Thermocouples.pdf|The Basics of Thermocouples]]
[[media:Thermocouple_Application.pdf|Thermocouple Application]]
==Completed Work==
==Completed Work==