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

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. 【課題】高い寸法精度を必要とすることなくより容易な作業で製造可能な導電率測定器を提供する。【解決手段】導電率測定器７は、液体の導電率を検出する導電率センサ１４と、基板１２と、流路形成部材１３と、を備える。基板１３は、導電率センサ１２が配置されたセンサ配置面１２ａを含む。流路形成部材１３は、基板１２に接合され、センサ配置面１２ａとで流路１９を画定する。そして、導電率センサ１４は、流路１９内に位置している。導電率測定器７はセンサ配置面１２ａに配され流路１９内に位置する温度センサ１５をさらに含んでいてもよい。温度センサ１５は、流路１９内を流れる液体の流れ方向に関して、導電率センサ１４の両側に配置されていてもよい。【選択図】図３