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Method for determining and/or monitoring at least one process variable of a medium, a corresponding electrochemical sensor and a corresponding system

A process variable and sensor technology, applied in the direction of material electrochemical variables, test water, material inspection products, etc., can solve the problem of inaccurate measurement

Inactive Publication Date: 2013-05-08
ENDRESS HAUSER CONDUCTA GESELLSCHAFT FUER MESS UND REGELTECHNIK MBH CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in a continuous drift in the measured value and the measurement becomes inaccurate

Method used

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  • Method for determining and/or monitoring at least one process variable of a medium, a corresponding electrochemical sensor and a corresponding system
  • Method for determining and/or monitoring at least one process variable of a medium, a corresponding electrochemical sensor and a corresponding system
  • Method for determining and/or monitoring at least one process variable of a medium, a corresponding electrochemical sensor and a corresponding system

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Experimental program
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Embodiment Construction

[0050] figure 1 The structure of the electrochemical sensor 1 realized according to the present invention is schematically shown. Reference number 1 refers to all sensors. Sensor 1 is produced using thick film technology. However, thin film technology is also a manufacturing option.

[0051] In the case of thick film technology, the (functional) layer is most often applied to the support using screen printing followed by firing. Often during this process additional, non-printable components are applied to the carrier, for which purpose thick-film hybrid techniques are also mentioned.

[0052] In the case of thin-film technology, methods using physical (e.g. evaporation, sputtering, ion plating or ICB (ionized particle beam) techniques) and chemical vapor deposition (in particular also plasma-supported methods) are most often The deposition of the layer takes place on the entire surface of the carrier, which is a substrate made of silicon or ceramic.

[0053] The sensor 1 ...

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Abstract

A method for determining and / or monitoring at least one process variable of a medium (2) by means of at least of an electrochemical sensor (1) comprising at least a first reference half cell (5) and a second reference half cell (6), and comprising the method steps as follows: measuring a first electrical measured variable X1, cont with a first measuring period t1, meas and a first measuring intervalt1, int with reference to the first reference half cell; measuring at least a second electrical measured variable X2, discont with a second measuring period t2, meas and a second measuring interval t2, int with reference to the second reference half cell; wherein the second measuring intervalt2, int is greater than the first measuring interval tint; and determining the at least one process variable from at least one electrical measured variable X1, cont or X2, discont. Furthermore, the invention relates to an electrochemical sensor and to a system.

Description

technical field [0001] The invention relates to a method for determining and / or monitoring at least one process variable of a medium with an electrochemical sensor, a corresponding electrochemical sensor and a corresponding system. Background technique [0002] Many sensors are utilized to monitor the properties of the media. Thus, for example, in the case of monitoring water quality, especially drinking water, in a distributed network, at least one of the following parameters is monitored: temperature; flow such as flow rate; pressure; pH value; redox potential; Nitrate, nitrite and chlorine content; global parameters, especially chemical and / or biochemical oxygen demand; conductivity; and (dissolved) organic components, especially total (dissolved) carbon and turbidity. In this case so-called multi-parameter sensors can be used. A multiparameter sensor is a sensor capable of (simultaneously) measuring more than one process variable. [0003] A distributed network in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26
CPCG01N27/26G01N33/18G01N27/30
Inventor 阿希姆·加尔托尔斯滕·佩希施泰因托马斯·威廉
Owner ENDRESS HAUSER CONDUCTA GESELLSCHAFT FUER MESS UND REGELTECHNIK MBH CO KG