WATER QUALITY MULTISENSOR

摘要

PURPOSE:To measure a different kind of water qualities by one water quality detector and to achieve the cost reduction and miniaturization of the title sensor, by providing a change-over apparatus for making a water quality change-over transmission circuit and a part of a conversion part common. CONSTITUTION:Not only the operation of residual chlorine but also the operation of conductivity are performed on the basis of informations detected by a detection electrode 4, a double electrode 5 and a thermistor 6 by a residual chlorine operator 8 and a conductivity operator 7 while operation is turned ON or OFF by the cyclic change-over signal of a water quality change-over transmission circuit 11. The signals operated by the conductivity operator 7 and the residual chlorine operator 8 are cyclically inputted to a signal change- over apparatus 9 which is turn inputs one of residual chlorine and conductivity signals to a resistor change-over apparatus 12 by the water quality change-over transmission circuit 11. By this method, water qualities of two elements can be measured by one water quality meter, and the contraction of an anchoring space and cost reduction can be achieved.