%0 Journal Article
%T Design and Construction of an Embedded Digital Teslameter for the Magnetic Characterization of Materials
%A A A Vel¨¢squez
%A Juliana Baena Rodr¨ªguez
%A Yhefferson Fernando Guti¨¦rrez Loaiza
%J -
%D 2015
%R https://doi.org/10.17230/ingciencia.11.21.5
%X We present the design, construction and validation of an embedded digital teslameter, intended for use in experiments of magnetic materials characterization by inductive and static methods. The teslameter consists of a planar type Hall effect transducer THS119, with differential output and adjustable measuring range, an INA129P instrumentation amplifier with adjustable gain, a microcontroller PIC16F873A with ADC converter of 10-bits for digital processing, data storage and data transfer to the computer via serial port; and a liquid crystal display to visualize the measurements. The system is adaptable to magnetic field transducers with single or differential output and with different measuring ranges; is sensitive to changes in the intensity and the polarity of the applied magnetic field and has an effective sensitivity of 5.0 mV/mT and uncertainty of 0.5£¿3T for the THS119 Hall effect transducer. The prototype teslameter was compared with a commercial teslameter PHYWE 13610.90
%K teslameter
%K Hall effect transducer
%K embedded system
%U http://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/2032