| 摘要 |
PURPOSE: A sensor unit of a sewage monitoring system is provided to monitor the state of sewage flowing in a sewage pipe by measuring the concentration of chorine ion inside the sewage pipe and taking images of the sewage pipe. CONSTITUTION: A sensor unit of a sewage monitoring system comprises a sensor body(20) which is formed with a longitudinal hollow portion(21) and a liquid supplement portion(22) communicated with the hollow portion, an actuating electrode member(33) which is connected to a lead electrode installed inside the sensor body and changes the electric potential according to the chlorine ion concentration of sample liquid, a reference electrode(31) which is supported in the hollow portion of the sensor body and applied with uniform electric potential regardless of sample, a camera which is installed on the underside of the sensor body, and a cleaning unit(50) which prevents the contamination of the camera lens and the actuating electrode due to sewage.
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