UNDERGROUND WATER LEVEL DETECTION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an underground water level gauge which has the function of preventing electrolytic corrosion and the function of avoiding a malfunction due to waste and worms with low power consumption to detect the underground water level of cultivated land.SOLUTION: A water detection section in which sets of opposite electrodes are arranged at equal intervals is applied with electric current only during measurement, an output section in the final output stage holds an analog signal, and a signal processing section located between the water detection section and the output section stands by in a sleep state other than during measurement.