| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an device for measuring oxidation/reduction material concentration that dispenses with a means for controlling the flow rate of liquid to be measured, or a movable part, such as a motor for making an electrode rotate or vibrate itself. <P>SOLUTION: This device is equipped with a measuring tube 1, through which the liquid to be measured, containing an oxidation or reduction material, flows; a detection electrode 2 and a counter electrode 3 provided in contact with the liquid to be measured in the facing state on the inner wall surface of the measuring tube 1; a power supply circuit 4 for applying a voltage, set beforehand in between the detection electrode 2 and the counter electrode 3; a diffusion current detection circuit 5 for detecting the diffusion current, flowing between the detection electrode 2 and the counter electrode 3; an oxidizing/reducing material content calculating circuit 6 for calculating the content concentration of the oxidizing or reducing material, based on the diffusion current detected by the diffusion current detection circuit 5; and a restriction mechanism 7, provided in the circumscribed state to the inner circumferential wall surface of the measuring tube 1, on the upstream side of the detection electrode 2 and the counter electrode 3, for making the pressure loss of the flow of the liquid to be measured generated. <P>COPYRIGHT: (C)2008,JPO&INPIT |
