A Cross-Conductive Sensor to Measure Bottled Water Quality

摘要

Analysing the water quality is critical for food value and healthy human life. To ensure quality, there is a need to develop a rapid, accurate, sensitive and cost-effective simple working detection system. This paper presents the theory, design, fabrication and test results of an accurate and simple working proto-type model of water quality on cross-conductance technique. It is small in size and simple in design and can be prepared at low cost. The sensor and the associated electronic circuit may be prepared in compact form using integration techniques. The structure of the sensor is simple having four conductive brass electrodes, arranged in the form of a concentric cylinder, with narrow gaps among them. The structure was designed using ANSYS software, then simulated using ANSYS MAXWELL 3D software by varying the geometric dimensions and liquid conductivity. Experimental results, on a compact proto-type model, were also included. It can differentiate between pure and adulterated water with significant resolutions. The sensor was fabricated and tested in the laboratory environment, with different bottled water samples having different total dissolved solids (TDS) values, available in the market. Liquid samples were prepared carefully to ensure the reliability of the results.