Conductivity sensors are devices used to measure the electrical conductivity of a solution, which indicates the concentration of ions present. These sensors work by passing an electrical current through the liquid and measuring how easily the current flows. Higher conductivity usually means a higher concentration of dissolved salts or minerals, making these sensors useful in various applications, including water quality testing and industrial processes. These sensors are commonly used in fields such as environmental monitoring, agriculture, and aquaculture. By providing real-time data on the ionic content of water, conductivity sensors help ensure optimal conditions for plants, fish, and other organisms, contributing to better management of natural resources.