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Sensor Project.
Member rating: No Rating | Words: | Submitted: Fri Nov 12 2004
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Sensor Project Plan: Diagram: Method: * I set up the circuit shown in my diagram above. * I then recorded some results for my preliminary experiments at various temperatures. * I then started taking results at 5oC intervals starting at 45oC and ending my results at 85oC. * I then repeated the experiment 3 times. * I changed the ohmmeters sensitivity. * I recorded the resistance of the thermistor at 1oC intervals starting at 35oC to 40oC. * I repeated this new experiment 3 times as well. Physical Principals and Equations: As the temperature of the water bath increases then the resistance of the thermistor decreases. This is for a negative temperature coefficient thermistor. The thermistor must have a lower resistance than the water otherwise the water's resistance will be recorded and not the thermistor's resistance. I will use the equations: V = I x R voltage = current x resistance I = K x V current = constant x voltage (I is proportional to V) V = E...
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