Abstract
A conductivity measurement setup has been developed to measure conductivity of ionic solutions using a microcontroller. A modified AC Wheatstone Bridge network is used to measure conductivity. This instrument system permits recording of conductivity and temperature and sends data to a computer to enable the computer processing of such data. A dedicated AT89C55WD (8-bit) based microcontroller and its associated peripherals are employed for the hardware. The details of its interface to measure conductivity, temperature and to control the temperature and evaluate results are explained in this paper.
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