UNIAXIAL ELECTRIC FIELD SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a uniaxial electric field sensor of a structure which can be connected in series by a cable. SOLUTION: Two electrode parts 3 each having an electrode are set on both sides inside a casing 2, and an electric field sensor amplification part 5 is arranged between the electrode parts 3. Water inlet ports 4 for respectively connecting the outside of the casing 2 with the electrode parts 3 are formed on a side peripheral face of the casing 2. Cable connection parts for setting the cable 9 are set at both ends of the casing 2. A potential difference of both electrodes obtained when the water outside the casing contacts the electrodes of the electrodes 3 through the water inlet ports 4 is measured and amplified by the electric field sensor amplification part 5. The measured value is outputted through the cable 9 to the outside of the casing 2.