CONDUCTIVITY MEASUREMENT INSTRUMENT, OCEAN OBSERVATION SYSTEM, AND METHOD FOR MANUFACTURING CONDUCTIVITY MEASUREMENT INSTRUMENT

摘要

PROBLEM TO BE SOLVED: To provide a conductivity measurement instrument that can be manufactured by easy work without requiring high dimensional accuracy.SOLUTION: A conductivity measurement instrument 7 comprises: a conductivity sensor 14 for detecting a conductivity of a liquid; a circuit board 12; and a flow channel formation member 13. The circuit board 13 includes a sensor placement surface 12a on which the conductivity sensor 14 is mounted. The flow channel formation member 13, connected to the circuit board 12, demarcates a flow channel 19 with the sensor placement surface 12a and itself. The conductivity sensor 14 is located inside the flow channel 19. The conductivity measurement instrument 7 may further include a temperature sensor 15 disposed on the sensor placement surface 12a and located inside the flow channel 19. The temperature sensor 15 may also be disposed on both sides of the conductivity sensor 14, with respect to the flow direction of the liquid flowing inside the flow channel 19.