Performance study of a two-electrode type aqueous conductivity sensor for smart farming

This paper presents performance study of a Cu-polymer based two-electrode type conductivity sensor. This sensor was earlier reported only for the small and fixed volume of analyte. In this paper, we discuss the sensor performance (range, accuracy and precision) with large and variable volume of analyte. In this context, the effects of cell structure on the cell constant are studied with COMSOL simulation and based on this study a modification in cell structure is presented to minimize the effect. Proposed modification is substantiated with practical experimentation and test results.