SOIL EC SENSOR RY-C10

Ry-c10 soil conductivity sensor is a sensor developed to observe and study soil conductivity. The main components are graphite electrode and temperature compensated thermistor, it is simple structure, stable performance and accurate data etc. Due to the vast territory of China, the salt composition of soil solution in each region is different. Each sensor must be calibrated in the laboratory before leaving the factory. The calibration process is carried out in KCl or NaCl solution. According to the salt composition of soil solution in the working area, a group of KCl or NaCl correction solutions with different concentrations are prepared, such as 0.01, 0.05, 0.1, 0.15, 0.2mol/l, The electrode constant of the instrument is adjusted at 1, and the temperature compensation is opened during the measurement. A set of conductivity values at 25 ℃ are measured from the low concentration to the high concentration correction solution, respectively. Compared with a set of correction solution, a graph is made, and then a quadratic polynomial fitting is used to obtain the salt value with high accuracy. Users can cooperate with soil moisture sensor to complete the dynamic study of soil water and salt change.