ABSTRACT
In the scientific study of the natural phenomena that surround us, one of the first tasks to carry out consists of detailed analysis of the physical variables of the phenomenon to obtain the maximum information about it. To perform this analysis, capable sensors are used to measure the physical variables and to transform that measure into useful information for the study. A sensor is a device made to respond to a physical variable in a predictable form. Sensors can be mechanical, electric, electromechanical, electronic, magnetic, electromagnetic, or optic, to name some. The so-called sensor transfer function assures a well-known relationship between the physical variable and the sensor output.
