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A coursework on sensing temperature with voltage.
Member rating: No Rating | Words: | Submitted: Fri Mar 31 2006
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A coursework on sensing temperature with voltage. BY NNEKA EZEIGWE SENSING COURSEWORK. AIM: To devise a means of sensing temperature through a potential divider circuit with a thermistor. MATERIALS/APPARATUS NEEDED: Thermometer, Thermistor, Beaker, Electric kettle, Power supply, Multimeter, Resistance box. For the experiment to be successful a lot of things have to be considered and the first thing to consider when working with sensors is the properties of sensors. PROPERTIES OF A GOOD SENSOR High resolution: resolution refers to the smallest change a sensor can detect in the quantity it is measuring. This quality is highly related to precision. Sensitivity: This refers to the ratio of the change of output to the change of input. Sometimes however it is necessary to compromise on sensitivity so as to increase the range. However a good sensor should have reasonable sensitivity and range. Noise, random error and fluctuations: This is bound to occur as the input signal may fluctuate or the sensor...
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