| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a concentration measuring apparatus capable of suppressing occurrence of an electrical problem due to rain water infiltrated from outside, leaked sample liquid, and the like. <P>SOLUTION: A concentration measuring apparatus 1 comprises: a sample cell 210; sample liquid introduction and discharge means 220; chemical injection means 230; optical detection means 240; stirring means 250; measuring means for measuring concentration of a specific component contained in the sample liquid; control means 120 for controlling operation of respective means; a body block which is provided with power supply means 130 for supplying power to respective means; and voltage conversion means 20 which is provided outside the body block and steps down a supply voltage inputted by a commercial power supply to a weak electric voltage which is lower than the supply voltage. The power supply means 130 supplies power to at least the sample liquid introduction and discharge means 220, the chemical injection means 230, the optical detection means 240, the stirring means 250, the measurement means and the control means 120, on the basis of the weak electric voltage outputted by the voltage conversion means 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
