| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water quality measuring apparatus capable of certainly sampling abnormal water even when an abnormality detection signal occurs when the abnormality of a measured value continues for a definite time and capable of simplifying constitution by effectively using a drain route. <P>SOLUTION: The water quality measuring apparatus is configured to produce the abnormality detection signal when the abnormality of the measured value continues for an information standby time or above and equipped with the changeover valve 22 arranged to the drain route of water to be measured passed through various sensors for measuring the quality of water and the water sampling tank 23 arranged on the downstream side of the changeover valve 22. The water sampling tank 23 includes the overflow volume of the wastewater of the water to be measured when the wastewater of the water to be measured flows in through the changeover valve 22 over a time shorter than the information standby time, stores the wastewater in the water sampling tank 23 through the changeover valve 22 in measurement of water quality, and changes over the changeover valve 22 on the occurrence of the abnormality detection signal to drain the wastewater without allowing the wastewater to flow in the water sampling tank 23. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
