EP0228385A1 - Installation d'entretien pour le nettoyage et l'etalonnage au moins partiellement automatiques d'une sonde a capteur de mesure - Google Patents

Installation d'entretien pour le nettoyage et l'etalonnage au moins partiellement automatiques d'une sonde a capteur de mesure

Info

Publication number
EP0228385A1
EP0228385A1 EP86903177A EP86903177A EP0228385A1 EP 0228385 A1 EP0228385 A1 EP 0228385A1 EP 86903177 A EP86903177 A EP 86903177A EP 86903177 A EP86903177 A EP 86903177A EP 0228385 A1 EP0228385 A1 EP 0228385A1
Authority
EP
European Patent Office
Prior art keywords
sensor
control unit
compressed air
maintenance
maintenance device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86903177A
Other languages
German (de)
English (en)
Inventor
Heinz Jürgen BRINKMANN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DR W INGOLD AG
Original Assignee
DR W INGOLD AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DR W INGOLD AG filed Critical DR W INGOLD AG
Publication of EP0228385A1 publication Critical patent/EP0228385A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/4163—Systems checking the operation of, or calibrating, the measuring apparatus
    • G01N27/4165—Systems checking the operation of, or calibrating, the measuring apparatus for pH meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/283—Means for supporting or introducing electrochemical probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells
    • G01N27/38—Cleaning of electrodes

Definitions

  • the subject of the invention is a maintenance device according to the preamble of patent claim 1.
  • electrochemical sensors such as pH electrodes, in particular combination electrodes
  • pH electrodes in particular combination electrodes
  • the cleaning methods mentioned have some disadvantages, namely that in the cleaning method mentioned under 1.1 the pH value is severely distorted and, as a rule, the cleaning agent is diluted by the measuring medium. The consumption of cleaning agents is also relatively high; The cleaning method mentioned under 1.2 usually only works with loosely adhering contaminants, which is why this method can only be used to a limited extent. In addition, the pH value is also falsified in this case.
  • the cleaning method mentioned under 1.3 is associated with great mechanical outlay and, in the case of abrasive media, is subject to high wear of the moving parts. Ultrasonic cleaning requires a relatively large construction volume and is also not applicable in potentially explosive areas due to the high energy output.
  • DE-PS 2 557 542 it is known to install the electrode in ball valves which separate the electrode from the measuring medium when changing the position and make the cleaning or calibration solutions accessible. Furthermore, it is known from DE-OS 27 12 159 to spray measuring and calibration solutions in small quantities onto the electrode through fine nozzles. Furthermore, from DE-OS 25 14 193 a device for the automatic analysis of liquid samples is known, in which the test tubes containing the samples are arranged on a conveyor belt divided into sectors and by means of the conveyor belt individual analysis stations according to a predetermined one Program can be fed. The control is preferably carried out using a pneumatic programming mechanism. Finally, it has been proposed to accommodate the electrode membrane in a recess in which it can be cleaned or calibrated if necessary.
  • the object of the invention is to provide a maintenance device for a measuring probe, which is part of a measuring device for the continuous monitoring of biological or chemical processes by measuring analytical parameters in a fluid medium, which enables simple and less labor-intensive cleaning and calibration of the Sensor is allowed in a short amount of time and allows partial or complete automation of maintenance.
  • the object is achieved by the characterizing features of claim 1.
  • the combination of the sensor unit, dosing unit and control unit ensures that the entire maintenance program can be achieved with little effort and time and without removing the sensor from the container containing the measuring medium.
  • this combination in which all of the functions required for carrying out the maintenance can be triggered and / or controlled by means of pneumatic signals, and the coupling to a control unit by means of compressed air lines allows at least partial automation of the maintenance and ongoing monitoring of the entire maintenance program in a simple way.
  • Advantageous designs of the measuring device are described in claims 2 to 10.
  • the design according to claim 2 prevents contamination or dilution of the measuring medium by the rinsing or cleaning liquid used and / or by the buffer solutions used as calibration liquid or a change in the pH value of the buffer solutions by the measuring medium.
  • the embodiment according to claim 3 allows both an exact metering of the supply of the rinsing or cleaning liquid and the buffer solutions and the time limitation of the supply of the rinsing or cleaning liquid and the buffer solutions.
  • this design allows the pressure of the rinsing or cleaning liquid and the presence of sufficient amounts of the buffer solutions to be continuously monitored.
  • the embodiment according to claim 4 allows a simple and time-consuming execution of all the work steps required to carry out the maintenance.
  • the design according to claim 5 permits continuous monitoring of all the operations and measured values required for the successful implementation of the maintenance.
  • control unit can be connected to the central compressed air supply via a simple plug connection.
  • the embodiment according to claim 8 enables the entire maintenance program to be carried out fully automatically and its complete adaptation to the sequence and the requirements of the method to be monitored.
  • FIG. 1 is a block diagram of the maintenance facility
  • Figure 2 shows a transmitter unit corresponding to AI of Figure 1 partially in vertical longitudinal section
  • Figure 3 shows a dosing unit corresponding to A2 of Figure 1 partially in vertical longitudinal section
  • FIG. 4 shows a control unit according to A3 of Figure 1 in plan view.
  • the block diagram according to FIG. 1 shows a schematic representation of a maintenance device for the trouble-free, at least partially automatic cleaning and calibration of a measuring probe, which is part of a device suitable for the continuous monitoring of biological or chemical processes by measuring analytical parameters in a fluid medium
  • the measuring device is, with a measuring unit AI, a dosing unit A2 and a control unit A3.
  • the transducer unit AI is equipped with a coupling element B1 for connection to the metering unit A2 and with a multipole coupling C for coupling with the control unit A3.
  • the dosing unit A2 in turn has a coupling member B2 which interacts with the coupling member B1 and a multipole coupling C for coupling to the control unit A3.
  • the control unit A3 is equipped with multipole couplings C 3.1 and C 3.2, with C 3.1 corresponding to the multipole coupling C. from AI and C 3.2 to the multipole coupling C from A2.
  • the control unit A3 also has a signal output D, via which it can be connected to a central compressed air supply or additionally via a pneumatic / electrical converter to a central process control unit.
  • FIG. 2 shows a sensor probe 2, which forms the essential component of the sensor unit AI, which has an outer tube 4 and is immersed in a rinsing chamber 5.
  • a measuring sensor 6, for example a pH electrode, is arranged displaceably in the outer tube 4.
  • the outer tube 4 has an abutment on its head part, which is located in a container and is located in a container indicated by a guide bushing 8.
  • Ausssenrohr 4 is further coupled to the obturator 10 ceremoniessein ⁇ device 12 for holding and guiding the probe 6 during the displacement into an operative position in which the probe is immersed in the measuring medium with opened shut-off device 10 • 6, and in a maintenance position in which the Sensor 6 is retracted into the outer tube 4 when the shut-off element 10 is closed.
  • the guide device 12 is coupled to actuating members 13, 14 which are movable in the direction of the longitudinal axis of the sensor 6 and by means of which the sensor 6 can be moved into the operating position or the maintenance position by means of compressed air fed in via compressed air lines 16 or 18.
  • Derivatives 20, 22 are provided for discharging the compressed air from the outer tube 4.
  • a temperature compensation resistor 24 is also arranged in the rinsing chamber 5, the measured values of which are fed into the control unit A3.
  • the rinsing chamber 5 also has an inlet opening 26 with a check valve 28 in the area in which the head part of the sensor 6 carrying a membrane 30 is located.
  • the measuring sensor 6 is surrounded by an inner tube 32, which at its end part opposite the head part is fixedly connected to a plug connection 34 for connection to a measuring device.
  • the inlet opening 26 corresponds to the coupling member B1 from FIG. 1 for connecting the transmitter unit AI to the dosing unit A2 via the coupling member B2 of the dosing unit A2 and is intended for the introduction of cleaning agent and / or buffer solutions from the dosing unit A2.
  • the compressed air lines 16, 18, 20 and 22 a multipole coupling 35 corresponding to the multipole coupling C 3.1 of the control unit A3, corresponding to the multipole coupling C_, according to FIG. 1 is provided.
  • FIG. 3 shows a dosing unit A2 designed for the use of water as a cleaning agent and of two buffer solutions with different pH values.
  • the coupling member B2 corresponds to a supply system 48 formed from lines 36, 38 and 40, which are equipped with non-return valves 42, 44 and 46.
  • a pressure switch 50 which is coupled to the control unit A3 via compressed air lines 52 and 54, and a pneumatically operated directional valve 56 are installed, which are used to set the duration of the water inflow with a time valve is coupled in the control unit A3.
  • the dosing unit A2 also has a first storage vessel 60 for a first buffer solution, for example with pH 7, and a second storage vessel 62 for a second buffer solution, for example with pH 4.
  • a sensor 64 is arranged in the storage vessel 60 and a sensor 65 is arranged in the storage vessel 62, which are coupled to the control unit A3 via compressed air lines 66, 67.
  • a first metering pump 68 in the present case a piston pump, which is connected to the supply vessel 60 via a line 70 and is coupled to the control unit A3 via compressed air lines 72, 73, is provided to convey the first buffer solution.
  • a second metering pump 74 in the present case a piston pump identical to the first, which is connected to the supply vessel 62 via a line 76 and is coupled to the control unit A 3 via compressed air lines 78, 79.
  • the part of the metering unit 2 comprising the storage vessels 60, 62 and the metering pumps 68, 74 with the associated compressed air lines 66, 67, 72, 73, 78, 79 is in a housing 80 with a multipole coupling 82, with bushings 84, 86, 88 for the Drucklu ttechnisch 52, 54, 58 and with Rohrverbindun ⁇ gene 90, 92 for the feed lines 38, 40 installed.
  • the control unit shown in FIG. 4 has control elements 94, 96 for moving the sensor 6 in and out, a control element 98 for switching the flushing on and off, a control element 102 for switching the calibration program on and off, and a first request 106 for setting the pH to 7.00, a second prompt 108 for setting the pH to, for example, 4.01, an ACKNOWLEDGMENT operating element 110, pneumatic displays 111, 112, 113, 115, of which the current one The status of the program sequence can be read, an LCD display 114 from which the current measured value of the sensor 6 can be read, a warning display 116 for inadequate rinse water pressure, an amplifier 117 for setting the pH value, a warning display 118 for insufficient filling state of the storage containers 60 and / or 62, an operating element EICHUNG 120, a pneumatic display EICHUNG corresponding to the multipole coupling C of the measuring unit AI End multipole coupling 122, corresponding to C 3.1 of FIG.
  • a multipole coupling 124 corresponding to the multipole coupling C2 of the dosing unit A2, corresponding to C 3.2 of FIG. 1, and one with a central compressed air supply or an additional central one Process control unit can be coupled with signal output 126, corresponding to D in FIG. 1.
  • the control unit A3 has two separate, not shown in the figure, Inputs for the temperature compensation resistor 24 and a further temperature compensation resistor, not shown, located in the measuring medium, and with a control element 128 for switching from automatic temperature compensation to manual temperature compensation.
  • all operating elements are designed as push buttons.
  • the color of the display is blue with the exception of the MEASUREMENT display, which appears in green.
  • the warning displays in the event of a lack of flushing water pressure and / or inadequate filling status of the storage containers for the buffer solution appear red. Further details can be found in the description of the exemplary embodiment.
  • the configuration of the maintenance device of the type mentioned at the outset, which is described in FIGS. 2 to 4, is designed for partially automatic operation. All of the operating steps, like all of the feedback, are triggered by pneumatic signals. In a configuration designed for fully automatic operation, the manually or pneumatically operated valves are replaced by electrically actuated solenoid valves, and the same applies to all pneumatic feedback signals from PE converters (pneumatic-electrical converters) which incorporate a pneumatic signal electrical converting. Through this pneumatic / electrical interface, the measuring device as a whole can be connected to a central process control unit e.g. a computer or a microprocessor-operated pH amplifier connected and controlled by it.
  • a central process control unit e.g. a computer or a microprocessor-operated pH amplifier connected and controlled by it.
  • the exemplary embodiment relates to the cleaning and calibration of a pH electrode used for monitoring a fermentation process, which corresponds to the sensor 6 in FIG. 2, using the configuration of the measuring device which is designed for partially automatic operation.
  • the pH electrode 6 is initially in the operating position, as can be seen from the MEASUREMENT display (green). Pressing the pushbutton 96 extends the pH electrode 6, as the MAINTENANCE display (113 blue) shows.
  • the pH electrode 6 is now in the maintenance position.
  • the toggle switch 98 is actuated, the flushing is switched on and the calibration is switched on by actuating the toggle switch 102.
  • buffer solution with pH 7 is automatically pumped from the storage vessel 60 by means of the metering pump 68 via the feed line 38 via the check valve 44 into the flushing chamber 5.
  • the pneumatic display 106 of the control unit A3 shows the request to adjust the pH 7 by means of the Amplifier.
  • the pneumatic display 111 shows the request by means of the operating element 110 ACKNOWLEDGE to actuate the further process.
  • the electrode 6 is rinsed for about 10 seconds, whereupon the buffer solution is added .
  • pH 4.01 is pumped out of the storage vessel 62 by means of the metering pump 74 via the feed line 40 and the check valve 46 into the rinsing chamber 5.
  • the pneumatic display 108 then shows the request to use the controller on the amplifier 117 to set the pH to the value of, for example, 4.01. If the filling state of the first storage vessel 60 and / or the second storage vessel 62 is insufficient, the sensor 64 and / or the sensor 65 emits a signal to the control unit A3 via the pressure air lines 66, 67, causing a red warning at 118 ⁇ show PUFFERLOESUMG? appears. This only goes out when the storage vessels 60 and / or 62 are filled. Only then can the calibration program be started.
  • the calibration program After the calibration program has ended, this can be repeated if necessary by pressing the key 102, which is only useful, however, if the pH electrode 6 shows unclear results. Otherwise, the electrode can be moved back into the measuring space by pressing the pushbutton 94, the shut-off device 10 being opened. After moving the pH electrode 6 into the measuring room, the current measured value appears on the LCD display 114 and the feedback MEASURE (green) on the pneumatic display 112.
  • Buffer solutions and the immediate notification of defects that occur due to the lighting up of warning signals in the display part of the control unit A3 and the continuous display of the current status of the program sequence ensure simple and trouble-free handling of the entire maintenance process.
  • the temperature compensation resistor 24 arranged in the electrode space and a further temperature compensation resistor in the measuring medium both of which are coupled to the control unit A3, the temperature of the buffer solutions on the one hand and the temperature of the measuring medium can be automatically compensated for, resulting in measuring errors which are different Temperatures decrease, are excluded.
  • the operating element 128 By actuating the operating element 128, the temperature of the buffer solutions on the one hand and the temperature of the measuring medium can also be compensated for manually.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Abstract

La combinaison d'une unité à capteur de mesure, d'une unité de dosage et d'une unité de commande permet d'exécuter toutes les mesures d'entretien rendues nécessaires au cours de la surveillance du processus en exigeant peu de temps et de travail et sans enlever la sonde du récipient contenant le milieu à mesurer. En outre, cette combinaison par laquelle toutes les fonctions pour l'exécution de l'entretien peuvent être déclenchées et/ou commandées à l'aide de signaux pneumatiques, permet d'automatiser au moins partiellement l'entretien.
EP86903177A 1985-05-30 1986-05-28 Installation d'entretien pour le nettoyage et l'etalonnage au moins partiellement automatiques d'une sonde a capteur de mesure Withdrawn EP0228385A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2279/85A CH670158A5 (fr) 1985-05-30 1985-05-30
CH2279/85 1985-05-30

Publications (1)

Publication Number Publication Date
EP0228385A1 true EP0228385A1 (fr) 1987-07-15

Family

ID=4230051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86903177A Withdrawn EP0228385A1 (fr) 1985-05-30 1986-05-28 Installation d'entretien pour le nettoyage et l'etalonnage au moins partiellement automatiques d'une sonde a capteur de mesure

Country Status (7)

Country Link
US (1) US4852385A (fr)
EP (1) EP0228385A1 (fr)
JP (1) JPS63500397A (fr)
CH (1) CH670158A5 (fr)
DE (2) DE3525401A1 (fr)
GB (1) GB2189888B (fr)
WO (1) WO1986007151A1 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3643036A1 (de) * 1986-12-17 1988-06-30 Conducta Mess & Regeltech Halterung fuer elektroden in der analytischen chemie
EP0372121B1 (fr) * 1988-12-02 1992-03-04 Yokogawa Europe B.V. Dispositif d'appui pour fixation d'électrode
US4961163A (en) * 1988-12-02 1990-10-02 Bryan Avron I System for monitoring and reporting the operability and calibration status of a pH sensor
JP2577981B2 (ja) * 1988-12-14 1997-02-05 株式会社堀場製作所 プロセス用イオン測定装置
US5016201A (en) * 1989-02-06 1991-05-14 Bryan Avron I System for calibrating, monitoring and reporting the status of a pH sensor
EP0391838B1 (fr) * 1989-03-02 1993-07-21 Ciba-Geigy Ag Dispositif pour détecter des processus d'équilibrage dans une solution aqueuse
DE3927282A1 (de) * 1989-08-18 1991-02-28 Conducta Mess & Regeltech Elektrodenhalterung fuer eintauch-, durchfluss- und anbau-messsysteme in der analytischen chemie
DE4140286C2 (de) * 1991-12-06 1994-01-27 Conducta Mess & Regeltech Elektrodenhalterung für Eintauch-, Durchfluß- und Anbau-Meßsystem in der analytischen Chemie
DE4207845C1 (en) * 1992-03-12 1993-09-02 Conducta Gesellschaft Fuer Mess- Und Regeltechnik Mbh & Co, 70839 Gerlingen, De Seal housing for process retractable analytical electrodes - allowing on=line leakage-free access to electrodes or housing seals
JP2599994Y2 (ja) * 1992-07-30 1999-09-27 株式会社堀場製作所 実験室用イオン濃度計の自動校正装置
JP3391945B2 (ja) * 1995-07-08 2003-03-31 株式会社堀場製作所 イオン濃度測定装置
DE19546266C2 (de) * 1995-12-12 1998-09-24 Conducta Endress & Hauser Vorrichtung zur Aufnahme und Halterung einer Meßelektrode
DE19911753C1 (de) * 1999-02-04 2000-11-09 Ofs Online Fluid Sensoric Gmbh Meßanordnung und Verfahren zur In-situ-Bestimmung eines Wassergüteparameters sowie eine Prozeßsteueranordnung
DE10024564A1 (de) * 2000-05-19 2001-11-22 Knick Elektronische Mesgeraete Sondeneinrichtung zur Aufnahme, Positionierung, Kalibrierung und/oder Wartung einer Meßelektrode
US6770184B1 (en) * 2001-02-13 2004-08-03 Advanced Micro Devices, Inc. Integrated de-ionized water pressure monitoring system for solder plating machines
DE10116614C5 (de) * 2001-04-03 2008-10-16 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Automatisierbare Meß-, Reinigungs- und Kalibriereinrichtung für pH-Elektroden oder Elektroden zur Messung von Redoxpotentialen
DE10135237A1 (de) * 2001-07-24 2003-02-06 Mettler Toledo Gmbh Vorrichtung zur Behandlung einer Messsonde sowie deren Verwendungen
DE20122922U1 (de) * 2001-11-14 2009-12-17 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Automatisierbare Mess-, Reinigungs- und/oder Kalibriereinrichtung für Elektroden zur Messung von pH-Werten oder Redoxpotentialen
US20040087031A1 (en) * 2002-11-05 2004-05-06 Simon Richard K. PH measurement system
DE10344263A1 (de) * 2003-09-23 2005-05-12 Conducta Endress & Hauser Verfahren zur sicheren Datenübertragung zwischen einem eigensicheren Sensor und einer nicht eigensicheren Auswerteeinheit
FR2924034B1 (fr) 2007-11-27 2011-07-22 Sartorius Stedim Biotech Dispositif de raccordement d'un accessoire a un recipient permettant une insertion simplifiee de l'accessoire dans le recipient
US8465697B2 (en) * 2007-12-31 2013-06-18 O.I. Corporation System and method for regulating flow in fluidic devices
FR2978131B1 (fr) 2011-07-19 2013-09-13 Sartorius Stedim Biotech Sa Perfectionnement au raccordement d'un accessoire a un recipient.
DE102015116357A1 (de) * 2015-09-28 2017-03-30 Endress+Hauser Conducta Gmbh+Co. Kg Sensoranordnung
EP3165911A1 (fr) 2015-11-03 2017-05-10 Bayer Technology Services GmbH Entretien automatise de capteurs electrochimiques
WO2017190069A1 (fr) * 2016-04-28 2017-11-02 Gorr Bryan Surveillance de condition de fluide automatique multi-capteurs, émetteur-récepteur et concentrateur d'affichage d'état
CN111060561A (zh) * 2019-12-31 2020-04-24 陕西中良智能科技有限公司 液体ph值的监测装置、监测方法及监测系统

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625850A (en) * 1970-02-16 1971-12-07 James R Arrington Sensing device for fluid media
FR2266159B1 (fr) * 1974-04-01 1977-04-15 Commissariat Energie Atomique
US3960497A (en) * 1975-08-19 1976-06-01 Beckman Instruments, Inc. Chemical analyzer with automatic calibration
DE2557542C3 (de) * 1975-12-19 1980-01-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Meßeinrichtung für elektrische und/oder elektrometrische Werte strömender Medien
DE2712159A1 (de) * 1977-03-19 1978-09-28 Bbc Brown Boveri & Cie Verfahren zum messtechnischen erfassen von stoffwerten von fluessigkeiten sowie vorrichtung zur durchfuehrung des verfahrens
US4094187A (en) * 1977-07-22 1978-06-13 Champion International Corporation Stack gas analyzing system with calibrating/sampling feature
US4336232A (en) * 1978-04-14 1982-06-22 Moritz George J Production of purified brine
JPS5923378B2 (ja) * 1979-05-17 1984-06-01 株式会社東芝 濃度計
DE2923627C2 (de) * 1979-06-11 1986-02-20 Bayer Ag, 5090 Leverkusen Vorrichtung zur automatischen Prozeßanalyse
US4260950A (en) * 1979-07-05 1981-04-07 Delphian Corporation Automatic portable pH meter and method with calibration receptacle
JPS5630650A (en) * 1979-08-22 1981-03-27 Hitachi Ltd Automatic chemical analyzer
US4349435A (en) * 1980-11-24 1982-09-14 Celanese Corporation Control of anaerobic filter
JPS57132053A (en) * 1981-02-10 1982-08-16 Yokogawa Hokushin Electric Corp Measuring apparatus with automatic correcting device
US4424559A (en) * 1981-02-27 1984-01-03 New Brunswick Scientific Co., Inc. Modular instrumentation for monitoring and control of biochemical processes
DE3118771C2 (de) * 1981-05-12 1984-01-19 Helmuth Dr. 6368 Bad Vilbel Galster Vorrichtung für elektrochemische Messungen, insbesondere pH-Messungen, mit einer Einrichtung zur Reinigung der Meßelektrode und/oder Nacheichung einer Meßkette
DE3139310C2 (de) * 1981-10-02 1987-04-02 Vsesojuznyj naučno-issledovatel'skij institut biosinteza belkovych veščestv, Moskau/Moskva System zur Steuerung der Kultivierung von Mikroorganismen
DD220852A1 (de) * 1984-01-26 1985-04-10 Petrolchemisches Kombinat Schaltungsanordnung zur steuerung der substratversorgung von fermentationsprozessen
DD220851A1 (de) * 1984-01-26 1985-04-10 Petrolchemisches Kombinat Schaltungsanordnung zur steuerung der stickstoff- und phosphorversorgung von fermentationsprozessen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8607151A1 *

Also Published As

Publication number Publication date
DE3525401A1 (de) 1986-12-04
WO1986007151A1 (fr) 1986-12-04
JPS63500397A (ja) 1988-02-12
US4852385A (en) 1989-08-01
GB2189888B (en) 1989-07-05
GB8701860D0 (en) 1987-03-04
GB2189888A (en) 1987-11-04
DE3525401C2 (fr) 1988-03-10
DE8520544U1 (de) 1988-01-07
CH670158A5 (fr) 1989-05-12

Similar Documents

Publication Publication Date Title
EP0228385A1 (fr) Installation d'entretien pour le nettoyage et l'etalonnage au moins partiellement automatiques d'une sonde a capteur de mesure
DE3832528C1 (fr)
DE1214905B (de) Elektrisches Zaehlgeraet fuer in einer Fluessigkeit suspendierte Teilchen
EP0035763B1 (fr) Appareil pour transporter des quantités mesurées d'un réactif liquide, dans une éprouvette
EP1007934B1 (fr) Dispositif pour analyser des echantillons de liquides
DE3217591A1 (de) Analysengeraet, insbesondere zur untersuchung von fluessigkeitsproben
EP1338237B1 (fr) Méthode et appareil pour tester l'ouverture des canaux d'un endoscope
DE1773715A1 (de) Fall-Viskosimeter
DE3614120A1 (de) Vorrichtung zur zufuhr von fluessigkeitsproben, insbesondere fuer eine messanordnung zur feststellung des gehalts der fluessigkeit an organischem kohlenstoff
DE68909312T2 (de) Vorrichtung zum Feststellen eines Bestandteils im Harn, sowie Klosettsitz mit einer Vorrichtung zur Urinanalyse.
DE3118771C2 (de) Vorrichtung für elektrochemische Messungen, insbesondere pH-Messungen, mit einer Einrichtung zur Reinigung der Meßelektrode und/oder Nacheichung einer Meßkette
DE102007019186B4 (de) Pipettiergerät und Verfahren für dem Betrieb des Pipettiergerätes
DE2557542C3 (de) Meßeinrichtung für elektrische und/oder elektrometrische Werte strömender Medien
DE102004010217A1 (de) Anordnung und Verfahren zur spektroskopischen Bestimmung der Bestandteile und Konzentrationen pumpfähiger organischer Verbindungen
WO2004057323A1 (fr) Procede de controle de la capacite de reaction d'un capteur chimique et dispositif destine a la mise en oeuvre du procede
EP0661529B1 (fr) Procédé et dispositif d'essai d'étanchéité d'un volume et pour déterminer la quantité de fuite
WO2001050126A1 (fr) Appareil portatif mobile muni d'un biocapteur reutilisable
DE4227338A1 (de) Verfahren und Durchflußmeßanordnung zur Analyse von Flüssigkeiten
EP2006020B1 (fr) Agencement de traitement d'échantillons pour un dispositif de dosage de liquides
EP1529484B1 (fr) Méthode et appareil d'analyse des canaux d'un endoscope
EP3449804B1 (fr) Procédé et dispositif de vérification simultanée de connection d'un adaptateur et de l'ouverture des canaux de l'endoscope
DE19544851A1 (de) Vorrichtung zur Untersuchung von Flüssigkeitsproben
DE3614954A1 (de) Proben-entnahme-vorrichtung mit einer pipette
DE2715050C3 (fr)
DE10135237A1 (de) Vorrichtung zur Behandlung einer Messsonde sowie deren Verwendungen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19870110

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): FR

17Q First examination report despatched

Effective date: 19890112

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19890703

R18W Application withdrawn (corrected)

Effective date: 19890703

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BRINKMANN, HEINZ, JUERGEN