DETECTOR FOR COLOR AND TURBIDITY OF CITY WATER

PURPOSE: To automatically measure the color and turbidity of city water at the same sensitivity as that of visual inspection by preparing a spectrophotometric part, etc., that can classifying the wavelengths of light transmitting in a measuring cell into a plurality of kinds. CONSTITUTION: A rotary disc type spectrophotometric part 6 is provided with at least four optical filters 7 (T for measuring turbidity; C for measuring color; R, G, B for three stimulation values of red, green and blue). During measurement, two solenoid values 8 are opened/closed at first to fill a measuring cell 2 with a blank water of colorless, transparent standard liquid, and the filters 7 (T, C, R, G, and B) are inserted into a measurement light path 4 successively in this state so as to measure the transmitting light quantity from a light source at this time. Next, the valves 8 are opened/closed again to fill the cell 2 with city water as a measuring sample and its transmitting light quantity at this time is measured. Based on these obtained data, a signal processing part 9 calculates and outputs their synthesized vector values as lightness or stimulation purity for coloring. In addition, a wiper is prepared on the cell 2 to eliminate measuring errors due to adhesion of air bubbles.