Method for analyzing a papermaking process and an electrochemical sensor for analyzing liquid
First Claim
1. An electrochemical, polarographic/galvanostatic sensor for analyzing a liquid, in which sensor there is a measurement cell, through which the liquid is led and in which there are several working electrodes of different material, reference-electrodes, current-supplying counter-electrodes, and pre-amplifiers to amplify weak measurement signals, characterized in that the electrodes are arranged into 4–
- 15 electrode series, each series including at least one of the working electrodes, one of the reference electrodes, one of the counter-electrodes, and a shared fourth electrode which is a common bias-electrode completing each electrode series, each series including one of the pre-amplifiers located proximate the electrodes of the series in a circuit card, and the electrodes being attached to an electrode cover in such a way that an end of the electrodes extends into a channel and the opposite end is connected directly to the circuit card.
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Abstract
A method for analyzing a papermaking process is disclosed in which several electrochemical quantities are measured from at least one liquid flow and fingerprints according to good process situations are determined. The electrochemical measurements are carried out independently of each other using at least three electrode series, each including at least three electrodes. In addition, at least one odor measurement is used from the gases that are emitted from the liquid flow into the gas space over the free liquid surface.
18 Citations
9 Claims
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1. An electrochemical, polarographic/galvanostatic sensor for analyzing a liquid, in which sensor there is a measurement cell, through which the liquid is led and in which there are several working electrodes of different material, reference-electrodes, current-supplying counter-electrodes, and pre-amplifiers to amplify weak measurement signals, characterized in that the electrodes are arranged into 4–
- 15 electrode series, each series including at least one of the working electrodes, one of the reference electrodes, one of the counter-electrodes, and a shared fourth electrode which is a common bias-electrode completing each electrode series, each series including one of the pre-amplifiers located proximate the electrodes of the series in a circuit card, and the electrodes being attached to an electrode cover in such a way that an end of the electrodes extends into a channel and the opposite end is connected directly to the circuit card.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification