| 摘要 |
Method for the automatic line calibration of an electrochemical sensor for measuring the concentration of a liquid phase dissolved electrochemical substance flowing into a pipe (5) and characterized by the following stages : - upstream of the electrochemical sensor (4), a generator (2) is placed on the pipe (5), said generator being suitable for delivering standard quantities of the substance ; - between said generator (2) and the electrochemical sensor, a delay line (3) is placed on said flow with a given volume of this liquid ; - by means of the generator (2), successively injected into the liquid pipe are two bursts of known quantities of the electrochemical substance corresponding to the concentrations C 1 and C 2 in the liquid flow ; - from the indications of the electrochemical sensor (4), the delay time introduced by the delay line is determined ; - the meter constant K of the substance concentration as indicated by the sensor is calculated by producing the ratio of the difference of the indications of the sensor to the difference of the concentrations C 2- C1 . Figure 2. B 9695 AM |
