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Method for start-up of a measuring device

A technology for measured and measured values, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., and can solve problems such as aging, sensor drift, and decrease in sensor measurement accuracy

Active Publication Date: 2014-08-13
ENDRESS HAUSER CONDUCTA GESELLSCHAFT FUER MESS UND REGELTECHNIK MBH CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Electrochemical sensors, e.g. potentiometric sensors as pH glass electrodes or ion selective electrodes, or e.g. amperometric sensors for dissolved oxygen measurement have a sensitive membrane and one or more internal electrolytes which may age over the storage time of the sensor , thus causing a drift of the sensor, and possibly even a decrease in the sensor's measurement accuracy

Method used

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  • Method for start-up of a measuring device
  • Method for start-up of a measuring device

Examples

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Embodiment Construction

[0034] figure 1A potentiometric transducer for pH measurement is shown. The transducer comprises a housing 1 of insulating material with a first cavity 5 and a second cavity 9, wherein the first cavity 5 is realized as an annular cavity and a reference half-cell is formed therein, the second cavity 9 is substantially cylindrical and is surrounded by said annular cavity in which a measuring half-cell is formed. Examples of suitable insulating materials include glass or synthetic materials such as plastics, eg polyetheretherketone (PEEK).

[0035] The first chamber 5 is surrounded by an outer tubular housing wall 16, an inner tubular housing wall 17 arranged coaxially with the outer tubular housing wall 16, and two annular housing walls placed opposite each other, said annular housing walls being perpendicular to the The tubular housing walls 16, 17 share a cylindrical axis of symmetry and connect the tubular housing walls 16, 17 to each other. The second chamber 9 is formed ...

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Abstract

A method for start-up of a measuring device, which is embodied to monitor by means of at least one measuring transducer in contact with the interior of a process container, especially of a single-use container, a measured variable of a medium contained in the process container, wherein, for ascertaining a measured value, at least one measurement signal of the measuring transducer is mapped to a measured value of the measured variable according to a predetermined characteristic curve, wherein the method includes: introducing a process medium into the process container; bringing the measuring transducer in contact with the process medium; and performing a one-point calibrating of the measuring device based on a measurement signal registered by the measuring transducer in the process medium or a measured value derived therefrom based on the characteristic curve.

Description

technical field [0001] The invention relates to a method for the activation of a measuring device, the method comprising monitoring a measured variable of a medium contained in a process container by means of at least one measuring transducer which is in particular connected to the process container The interior of the disposable container is in contact, wherein at least one measurement signal of the measurement transducer is mapped to a measured value of the measured variable in accordance with a predetermined characteristic curve for inferring a measured value. Background technique [0002] Pharmaceutical, chemical, biological, biochemical or biotechnological processes are increasingly performed in single-use containers (also known as disposable, or disposable bioreactors) as process vessels, which are increasingly measured. These single-use containers can be, for example, flexible containers, such as bags, tubes, fermenters or bioreactors. Bioreactors or fermenters usual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N35/00G01R35/00G01Q40/00G01N37/00
CPCG01N35/00693G01N35/00712G01N27/4165
Inventor 蒂洛·特拉普托尔斯滕·佩希施泰因
Owner ENDRESS HAUSER CONDUCTA GESELLSCHAFT FUER MESS UND REGELTECHNIK MBH CO KG
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