EP0226886A1 - Centrifuge - Google Patents
Centrifuge Download PDFInfo
- Publication number
- EP0226886A1 EP0226886A1 EP86116668A EP86116668A EP0226886A1 EP 0226886 A1 EP0226886 A1 EP 0226886A1 EP 86116668 A EP86116668 A EP 86116668A EP 86116668 A EP86116668 A EP 86116668A EP 0226886 A1 EP0226886 A1 EP 0226886A1
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- EP
- European Patent Office
- Prior art keywords
- rotor
- information
- coding
- information carrier
- centrifuge
- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
- B04B13/003—Rotor identification systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
Definitions
- the invention relates to a centrifuge with an exchangeable rotor which is provided with an information carrier for machine-readable information, and a reading device which has detectors for scanning the information carrier and an electronic circuit for processing the recorded information.
- Centrifuges are generally used to separate sample particles in a liquid medium.
- rotors e.g. Angle rotors, swing-out rotors, vertical rotors, zonal rotors.
- the individual rotors differ in their different performance features, such as the maximum achievable centrifugal force and the maximum usable volume.
- centrifuges are often not only used for one application, different interchangeable rotors are used for one device. Under no circumstances may the maximum speed of the rotor used be exceeded.
- Modern centrifuges therefore usually have a corresponding rotor-specific overspeed protection, for example an optical scanning of a light / dark disc by means of an optocoupler or similar methods or magnetic interrogation of a toothed lock washer or permanent magnets.
- Both methods are used to generate a frequency which switches off the centrifuge drive when the permissible value is exceeded.
- the aforementioned query is often omitted.
- the overspeed protection is guaranteed by the air resistance.
- High-speed centrifuges usually have cooling to keep the sample temperature inside the rotor constant. This class of centrifuges does not have a vacuum device as is required for ultracentrifuges that rotate even faster.
- the air resistance depending on the size, shape, surface and speed of the rotor used must be taken into account when controlling the temperature. This means that the cooling capacity must be adjusted accordingly. This is accomplished by a compensation circuit. The correct compensation value can be found in the corresponding nomograms of the individual rotors.
- the preselection of the rotor type is sufficient to automatically take the compensation from the memory of the microprocessor into account when preselecting the temperature.
- the same also applies to partially evacuated centrifuges.
- the object of the invention is to remedy this deficiency.
- the information carrier has a series of permanent magnet pins arranged distributed around the rotor, some of which face the detectors with their north and some with their south poles.
- This positive rotor detection requires a factory coding of the rotor.
- This coding can, for example, provide the following information to the query electronics: year of manufacture, serial number, rotor type and permissible maximum speed.
- the magnetic pin coding is the safest contactless type because of its robustness and the north or south pole orientation.
- the magnets are arranged radially around the axis of rotation. Some of the magnets are used for speed monitoring and the other for coding. Both subsets differ in polarity.
- the centrifuge shown in FIG. 1 is a fixed-angle centrifuge in which the sample vessels 1 are arranged in the rotor 2 at a certain angle of inclination. On its underside, the rotor carries a carrier ring 3 for receiving the coding.
- two sensors 4, 4a are arranged opposite it for scanning the coding.
- the rotor is driven by a drive axle 5.
- the axis is mounted in a fixed bearing housing 6 and is driven by a drive unit 7.
- the end face of the carrier ring 3 is shown in Fig. 2. It has 24 bores 8, evenly distributed over its circumference, into which suitable permanent magnet pins 9, 10 are inserted. The magnetic pins are inserted so that some of their south poles and some of their north poles face outwards.
- a larger amount of information can be encoded by using North and South Poland.
- the 15 positions of sectors a, b, c and thus 15 bits are available for rotor detection. In these 15 positions, used lifts with their north poles facing outwards. They are divided into 4 bits (sector a) for the year of manufacture, 7 bits (sector b) for the serial number and 4 bits (sector c) for the rotor type.
- the magnetic pins of sector d are facing outwards with their south poles. They are used for coding the speed.
- the microprocessor needs a start bit to recognize the start of the coding. Since the magnets for the speed monitoring are used in a different polarity than the coding magnets, the start information is automatically obtained when the polarity changes due to the rotation.
- a second sensor (4a) permits independent monitoring of both the speed and the coding in the case of electrical isolation, in order to meet even the strictest safety regulations.
- the circuit for detecting the coding shown in FIG. 3, for example, is constructed as follows, reference being made simultaneously to the signal diagrams in FIG.
- the magnetic sensor 4 has a supply voltage of + 12 volts.
- the signal output has a DC potential of + 6 volts.
- the magnets rotating past the sensor generate pulses with a signal voltage of approximately 270 mVpp. These are superimposed on the output voltage (Fig. 4a).
- the sensor 4 is connected to the inverting input of an operational amplifier 11.
- the signal is amplified and inverted approximately 30 times in the operational amplifier 11 (FIG. 4b).
- the other input of the amplifier 11 is supplied with a bias voltage by a potentiometer 12, which keeps the output at + 6 volts.
- the output of the amplifier 11 is connected to the non-inverting input of an operational amplifier 13 and to the inverting input of an operational amplifier 14.
- the second input of the amplifier 13 is connected to a bias voltage of approximately 8 volts with the aid of the resistors 15, 16, 17. This ensures that only the interference-free positive peaks of the output signal of the amplifier 11 are converted into a square-wave signal (FIG. 4c).
- the amplifier 14 has a second input between the resistors 16 and 17 at 4 volts. In this way, it inverts the negative pulses of signal 46 and also supplies a square-wave signal (FIG. 4d).
- the output signal of amplifier 13 (FIG. 4c) is fed to a speed monitoring device (not shown), while the output signal of amplifier 14 (FIG. 4d) containing the rotor coding is fed to a microprocessor (not shown) for processing.
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Abstract
Zentrifuge mit einem auswechselbaren Rotor (2), der mit einem Informationsträger (3) für maschinenlesbare Information versehen ist, und einer Leseeinrichtung, die Detektoren (4,4A) zur Abtastung des Informationsträgers (3) und eine elektronische Schaltung zur Verarbeitung der aufgenommenen Information aufweist, wobei der Informationsträger (3) eine Reihe von am Rotor verteilt angeordneten Permanentmagnetstiften (9,10) aufweist, die teils mit ihren Nord-, teils mit ihren Südpolen den Detektoren (4,4A) zugewandt sind. Centrifuge with an exchangeable rotor (2) which is provided with an information carrier (3) for machine-readable information, and a reading device which has detectors (4,4A) for scanning the information carrier (3) and an electronic circuit for processing the recorded information , The information carrier (3) has a row of permanent magnet pins (9, 10) which are distributed around the rotor and which face the detectors (4,4A) partly with their north and partly with their south poles.
Description
Die Erfindung betrifft eine Zentrifuge mit einem auswechselbaren Rotor, der mit einem Informationsträger für maschinenlesbare Information versehen ist, und einer Leseeinrichtung, die Detektoren zur Abtastung des Informationsträgers und eine elektronischen Schaltung zur Verarbeitung der aufgenommenen Information aufweist.The invention relates to a centrifuge with an exchangeable rotor which is provided with an information carrier for machine-readable information, and a reading device which has detectors for scanning the information carrier and an electronic circuit for processing the recorded information.
Zentrifugen dienen im allgemeinen zur Trennung von Probenteilchen in einem flüssigen Medium. Je nach den Anwendungsbedürfnissen steht eine Vielzahl von verschiedenartigen Rotoren zur Verfügung, z.B. Winkelrotoren, Ausschwingrotoren, Vertikalrotoren, Zonalrotoren.Centrifuges are generally used to separate sample particles in a liquid medium. Depending on the application requirements, a variety of different types of rotors are available, e.g. Angle rotors, swing-out rotors, vertical rotors, zonal rotors.
Weiterhin unterscheiden sich die einzelnen Rotoren durch unterschiedliche Leistungsmerkmale, wie maximal erzielbare Zentrifugalkraft und maximal benutzbares Volumen.Furthermore, the individual rotors differ in their different performance features, such as the maximum achievable centrifugal force and the maximum usable volume.
Da Zentrifugen häufig nicht nur für einen Anwendungsfall benutzt werden, werden für ein Gerät verschiedene auswechselbare Rotoren eingesetzt. In keinem Fall darf die Maximaldrehzahl des eingesetzten Rotors überschritten werden.Since centrifuges are often not only used for one application, different interchangeable rotors are used for one device. Under no circumstances may the maximum speed of the rotor used be exceeded.
Moderne Zentrifugen haben daher üblicherweise eine entsprechende rotorspezifische Ueberdrehzahlsicherung, z.B. eine optische Abtastung einer Hell/Dunkel-Scheibe mittels eines Optokopplers oder ähnliche Verfahren oder magnetische Abfrage einer Zahnscheibe oder von Permanentmagneten.Modern centrifuges therefore usually have a corresponding rotor-specific overspeed protection, for example an optical scanning of a light / dark disc by means of an optocoupler or similar methods or magnetic interrogation of a toothed lock washer or permanent magnets.
Beide Methoden dienen zur Erzeugung einer Frequenz, die bei Ueberschreiten des zulässigen Wertes den Antrieb der Zentrifuge abschalten. Bei Zentrifugen ohne Vakuumeinrichtung wird häufig auf die vorerwähnte Abfrage verzichtet. Die Ueberdrehzahlsicherung ist durch den Luftwiderstand gewährleistet.Both methods are used to generate a frequency which switches off the centrifuge drive when the permissible value is exceeded. In the case of centrifuges without a vacuum device, the aforementioned query is often omitted. The overspeed protection is guaranteed by the air resistance.
Hochgeschwindigkeits-Zentrifugen haben in der Regel eine Kühlung, um die Probentemperatur innerhalb des Rotors konstant zu halten. Diese Klasse von Zentrifugen hat keine Vakuumeinrichtung wie sie bei noch schneller drehenden Ultrazentrifugen benötigt wird.High-speed centrifuges usually have cooling to keep the sample temperature inside the rotor constant. This class of centrifuges does not have a vacuum device as is required for ultracentrifuges that rotate even faster.
Der Luftwiderstand je nach Grösse, Form, Oberfläche und Drehzahl des eingesetzten Rotors muss bei der Temperatursteuerung berücksichtigt werden. Dies bedeutet, dass die Kälteleistung dementsprechend angepasst werden muss. Dies wird durch eine Kompensations-Schaltung bewerkstelligt. Der richtige Kompensationswert kann aus den entsprechenden Nomogrammen der einzelnen Rotoren entnommen werden.The air resistance depending on the size, shape, surface and speed of the rotor used must be taken into account when controlling the temperature. This means that the cooling capacity must be adjusted accordingly. This is accomplished by a compensation circuit. The correct compensation value can be found in the corresponding nomograms of the individual rotors.
Bei mit Mikroprozessoren ausgerüsteten Zentrifugen genügt die Vorwahl des Rotortyps, um aus dem Speicher des Mikroprozessors die Kompensation bei der Temperaturvorwahl automatisch zu berücksichtigen. Das gleiche gilt auch für teilweise evakuierte Zentrifugen.In the case of centrifuges equipped with microprocessors, the preselection of the rotor type is sufficient to automatically take the compensation from the memory of the microprocessor into account when preselecting the temperature. The same also applies to partially evacuated centrifuges.
Viele Rotoren, vor allem bei Ultrazentrifugen, sind Hochleistungsrotoreh, die eine Begrenzung ihres Einsatzes in der gesamten Menge der Läufe oder der Laufzeiten oder des Alters haben. Dies setzt voraus, dass jeder Lauf protokolliert wird. Sicherheitsvorschriften in verschiedenen Ländern verlangen dies ausdrücklich. Moderne Zentrifugen verfügen über eine Druckeinrichtung, bei der die Läufe protokolliert werden, sofern der richtige Rotortyp vorher von Hand eingegeben wurde.Many rotors, especially in ultracentrifuges, are high performance rotors that have a limit on their use in the total amount of runs or run times or age. This assumes that every run is logged. Safety regulations in different countries explicitly require this. Modern centrifuges have a pressure device in which the barrels can be logged if the correct rotor type has been entered manually beforehand.
Alle vorstehend genannten technischen Lösungswege haben den Mangel, dass die Rotoren nicht von der Zentrifuge selbsttätig identifiziert werden. Daher ist durch einen Irrtum des Benutzers eine Fehlbedienung möglich, so dass falsche Rotorprotokolle erstellt werden, überalterte Rotoren nicht als solche erkannt werden und durch falsche Kompensation der Temperatursteuerung die Probe nicht auf dem gewünschten Wert gehalten wird.All the technical solutions mentioned above have the defect that the rotors are not automatically identified by the centrifuge. Therefore, incorrect operation is possible due to a mistake on the part of the user, so that incorrect rotor reports are created, outdated rotors are not recognized as such, and the sample is not kept at the desired value due to incorrect compensation of the temperature control.
Der Erfindung liegt die Aufgabe zugrunde, diesen Mangel zu beseitigen.The object of the invention is to remedy this deficiency.
Erfindungsgemäss wird diese Aufgabe dadurch gelöst, dass der Informationsträger eine Reihe von am Rotor verteilt angeordneten Permanentmagentstiften aufweist, die teils mit ihren Nord-, teils mit ihren Südpolen den Detektoren zugewandt sind.According to the invention, this object is achieved in that the information carrier has a series of permanent magnet pins arranged distributed around the rotor, some of which face the detectors with their north and some with their south poles.
Diese positive Rotorerkennung setzt eine werkseitige Codierung des Rotors voraus. Diese Codierung kann beispielsweise folgende Information an die Abfrage-Elektronik geben : Baujahr, Serien-Nummer, Rotortype und zulässige Höchstdrehzahl.This positive rotor detection requires a factory coding of the rotor. This coding can, for example, provide the following information to the query electronics: year of manufacture, serial number, rotor type and permissible maximum speed.
Im Vergleich zu einer Codierung durch Anbringung eines Bar-Codes, oder ähnlicher Systeme ist die Magnetstiftcodierung wegen der Robustheit und der Nord-oder Südpol-Ausrichtung die sicherste berührungslose Art.Compared to coding by attaching a bar code or similar systems, the magnetic pin coding is the safest contactless type because of its robustness and the north or south pole orientation.
Die Magnete werden radial um die Rotationsachse angeordnet. Ein Teil der Magnete dient zur Geschwindigkeitsüberwachung und der andere Teil zur Codierung. Beide Teilmengen unterscheiden sich durch die Polarität.The magnets are arranged radially around the axis of rotation. Some of the magnets are used for speed monitoring and the other for coding. Both subsets differ in polarity.
Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand der beiliegenden Zeichnungen beschrieben. Es zeigen :
- Fig. 1 eine schematische Seitenansicht einer Zentrifuge
- Fig. 2 eine schematische Darstellung des Codierrings des Rotors der Fig. 1
- Fig. 3 eine schematische Darstellung der Schaltung zur Erfassung der Codierung.
- Fig. 1 is a schematic side view of a centrifuge
- FIG. 2 shows a schematic illustration of the coding ring of the rotor of FIG. 1
- Fig. 3 is a schematic representation of the circuit for detecting the coding.
Die in Fig. 1 dargestellte Zentrifuge ist eine Festwinkelzentrifuge, in der die Probengefässe 1 unter einem bestimmten Neigungswinkel im Rotor 2 angeordnet sind. Auf seiner Unterseite trägt der Rotor einen Trägerring 3 zur Aufnahme der Codierung.The centrifuge shown in FIG. 1 is a fixed-angle centrifuge in which the
In engem Abstand vom Trägerring 3 sind ihm gegenüber zwei Sensoren 4, 4a zur Abtastung der Codierung angeordnet.At a short distance from the
Der Rotor wird durch eine Antriebsachse 5 angetrieben. Die Achse ist in einem feststehenden Lagergehäuse 6 gelagert und wird durch eine Antriebseinheit 7 angetrieben.The rotor is driven by a
Die Stirnseite des Trägerrings 3 ist in Fig. 2 dargestellt. Er besitzt über seinen Umfang gleichmässig verteilt 24 Bohrungen 8, in die passende Permanentmagnetstifte 9, 10 eingesetzt sind. Die Magnetstifte sind so eingesetzt, dass teils ihre Südpole, und teils ihre Nordpole nach aussen gerichtet sind.The end face of the
Durch die Verwendung von Nord- und Südpolen kann eine grössere Informationsmenge kodiert werden. So stehen die 15 Positionen der Sektoren a,b,c und damit 15 Bit für die Rotorerkennung zur Verfügung. In diesen 15 Positionen sind eingesetzte Sifte mit ihren Nordpolen nach aussen gerichtet. Sie sind aufgeteilt in 4 Bit (Sektor a) für das Baujahr, 7 Bit (Sektor b) für die Seriennummer und 4 Bit (Sektor c) für den Rotortyp.A larger amount of information can be encoded by using North and South Poland. The 15 positions of sectors a, b, c and thus 15 bits are available for rotor detection. In these 15 positions, used lifts with their north poles facing outwards. They are divided into 4 bits (sector a) for the year of manufacture, 7 bits (sector b) for the serial number and 4 bits (sector c) for the rotor type.
Die Magnetstifte des Sektors d sind mit ihren Südpolen nach aussen gerichtet. Sie dienen für die Codierung der Drehzahl.The magnetic pins of sector d are facing outwards with their south poles. They are used for coding the speed.
Der in Fig. 2 beispielsweise gezeigte Indikatorring gehört zu einem Rotor mit dem Baujahrcode (wegen der Drehrichtung in umgekehrter Reihenfolge gelesen) 1010 = 5 für 1985, der Seriennummer 1000011 = 97, vom Rotortyp 1101 = 11, dessen höchstzulässige Drehzahl 101010101 = 25200 Upm beträgt.The indicator ring shown in FIG. 2, for example, belongs to a rotor with the year of manufacture code (read in reverse order because of the direction of rotation) 1010 = 5 for 1985, serial number 1000011 = 97, of rotor type 1101 = 11, the maximum permissible speed of which is 101010101 = 25200 rpm .
Für die Erkennung des Beginns der Codierung benötigt der Mikro-Prozessor einen Startbit. Da die Magnete für die Drehzahlüberwachung in anderer Polarität eingesezt sind als die Codierungsmagnete, ergibt sich somit automatisch beim Wechsel der Polarität durch die Rotation die Startinformation.The microprocessor needs a start bit to recognize the start of the coding. Since the magnets for the speed monitoring are used in a different polarity than the coding magnets, the start information is automatically obtained when the polarity changes due to the rotation.
Die vorstehend beschriebene Lösung lässt die Erkennung nur bei Rotation zu. Eine parallel zur Rotationsachse angebrachte Codierung ermöglicht das Erkennen der genannten Rotorinformation beim Aufsetzen des Rotors auf die Achse.The solution described above allows detection only when rotating. A coding applied parallel to the axis of rotation enables the rotor information mentioned to be recognized when the rotor is placed on the axis.
Der Einsatz eines zweiten Sensors (4a) gestattet bei galvanischer Trennung eine voneinander unabhängige Ueberwachung sowohl der Drehzahl als auch der Codierung, um selbst schärfsten Sicherheitsvorschriften gerecht zu werden.The use of a second sensor (4a) permits independent monitoring of both the speed and the coding in the case of electrical isolation, in order to meet even the strictest safety regulations.
Die in Fig. 3 beispielsweise gezeigte Schaltung zur Erfassung der Codierung ist wie folgt aufgebaut, wobei gleichzeitig auf die Signaldiagramme in Fig.4 Bezug genommen wird.The circuit for detecting the coding shown in FIG. 3, for example, is constructed as follows, reference being made simultaneously to the signal diagrams in FIG.
Der magnetische Sensor 4 hat eine Versorgungsspannung von + 12 Volt. Der Signalausgang hat ein Gleichspannungspotential von + 6 Volt.The
Die am Sensor vorbei rotierenden Magnete erzeugen Impulse mit einer Signalspannung von etwa 270 mVss. Diese sind der Ausgangsspannung überlagert (Fig. 4a). Der Sensor 4 ist mit dem invertierenden Eingang eines Operationsverstärker 11 verbunden. Das Signal wird im Operationsverstärker 11 etwa 30fach verstärkt und invertiert (Fig. 4b). Durch ein Potentiometer 12 wird der andere Eingang des Verstärkers 11 mit einer Vorspannung versorgt, die den Ausgang auf + 6 Volt hält.The magnets rotating past the sensor generate pulses with a signal voltage of approximately 270 mVpp. These are superimposed on the output voltage (Fig. 4a). The
Der Ausgang des Verstärkers 11 ist mit dem nichtinvertierenden Eingang eines Operationsverstärkers 13 und mit dem invertierenden Eingang eines Operationsverstärkers 14 verbunden. Der zweite Eingang des Verstärkers 13 ist mit Hilfe der Widerstände 15,16,17 auf eine Vorspannung von etwa 8 Volt gelegt. Dadurch wird erreicht, dass nur die störungsfreien positiven Spitzen des Ausgangssignals des Verstärkers 11 in ein Rechtecksignal (Fig. 4c) umgewandelt werden. Der Verstärker 14 liegt mit säinem zweiten Eingang zwischen den Widerständen 16 und 17 auf 4 Volt. Auf diese Weise invertiert er die negativen Impulse des Signals 46 und liefert ebenfalls ein Rechtecksignal (Fig. 4d).The output of the
Das Auqgangssignal des Verstärkers 13 (Fig. 4c) wird einer Drehzahlüberwachungseinrichtung (nicht gezeigt) zugeführt, während das die Rotorcodierung enthaltende Ausgangssignal des Verstärkers 14 (Fig. 4d) zur Verarbeitung einem Mikroprozessor (nicht gezeigt) zugeführt wird.The output signal of amplifier 13 (FIG. 4c) is fed to a speed monitoring device (not shown), while the output signal of amplifier 14 (FIG. 4d) containing the rotor coding is fed to a microprocessor (not shown) for processing.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5285/85 | 1985-12-11 | ||
CH528585 | 1985-12-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0226886A1 true EP0226886A1 (en) | 1987-07-01 |
EP0226886B1 EP0226886B1 (en) | 1990-08-29 |
EP0226886B2 EP0226886B2 (en) | 1994-01-05 |
Family
ID=4291022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86116668A Expired - Lifetime EP0226886B2 (en) | 1985-12-11 | 1986-12-01 | Centrifuge |
Country Status (5)
Country | Link |
---|---|
US (1) | US4772254A (en) |
EP (1) | EP0226886B2 (en) |
JP (1) | JPS62140659A (en) |
DE (1) | DE3673782D1 (en) |
FI (1) | FI864811A (en) |
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DE4037458A1 (en) * | 1990-11-24 | 1992-05-27 | Heraeus Sepatech | Magnetic tagged rotor for centrifuge rotor - providing integrated, continuously updated operating log and safety check particularly against cyclical dynamic stress |
EP0494421A1 (en) * | 1991-01-07 | 1992-07-15 | Beckman Instruments, Inc. | Tachometer and rotor identificaton system for centrifuges |
EP0560391A2 (en) * | 1992-03-13 | 1993-09-15 | Maschinenfabrik Berthold Hermle Aktiengesellschaft | Centrifuge |
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EP0604912A2 (en) | 1992-12-28 | 1994-07-06 | Kabushiki Kaisha Kubota Seisakusho | Centrifuge and rotor for use therewith |
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US4857811A (en) * | 1988-03-31 | 1989-08-15 | E. I. Du Pont De Nemours And Company | Evacuation pump control for a centrifuge instrument |
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FR2657793B1 (en) * | 1990-02-06 | 1992-04-24 | Jouan | CENTRIFUGATION APPARATUS WITH REMOVABLE ROTOR AND MEANS OF IDENTIFYING ROTORS. |
US5235864A (en) * | 1990-12-21 | 1993-08-17 | E. I. Du Pont De Nemours And Company | Centrifuge rotor identification system based on rotor velocity |
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US5518493A (en) * | 1994-07-07 | 1996-05-21 | Beckman Instruments, Inc. | Automatic rotor identification based on a rotor-transmitted signal |
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US6572523B2 (en) | 2001-04-05 | 2003-06-03 | Fleetguard, Inc. | Centrifuge rotation indicator |
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DE102011100044B4 (en) * | 2011-04-29 | 2017-10-05 | Thermo Electron Led Gmbh | Sensor arrangement for identifying a rotor and centrifuge used in a centrifuge |
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CN115400886A (en) * | 2021-05-28 | 2022-11-29 | 青岛海特生物医疗有限公司 | Centrifuge rotor identification system and method and device for centrifuge rotor identification |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0138383A2 (en) * | 1983-09-17 | 1985-04-24 | FISONS plc | A centrifuge provided with a rotor identification system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4551715A (en) * | 1984-04-30 | 1985-11-05 | Beckman Instruments, Inc. | Tachometer and rotor identification apparatus for centrifuges |
US4663601A (en) * | 1984-11-21 | 1987-05-05 | Xomox Corporation | Magnetic switch housing assembly |
-
1986
- 1986-11-26 FI FI864811A patent/FI864811A/en not_active IP Right Cessation
- 1986-12-01 DE DE8686116668T patent/DE3673782D1/en not_active Expired - Lifetime
- 1986-12-01 EP EP86116668A patent/EP0226886B2/en not_active Expired - Lifetime
- 1986-12-03 US US06/937,264 patent/US4772254A/en not_active Expired - Fee Related
- 1986-12-09 JP JP61293340A patent/JPS62140659A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0138383A2 (en) * | 1983-09-17 | 1985-04-24 | FISONS plc | A centrifuge provided with a rotor identification system |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3815449A1 (en) * | 1988-05-06 | 1989-11-16 | Sigma Laborzentrifugen Gmbh | Centrifuge, in particular laboratory centrifuge |
DE4037458A1 (en) * | 1990-11-24 | 1992-05-27 | Heraeus Sepatech | Magnetic tagged rotor for centrifuge rotor - providing integrated, continuously updated operating log and safety check particularly against cyclical dynamic stress |
US5383838A (en) * | 1991-01-07 | 1995-01-24 | Beckman Instruments, Inc. | Tachometer and rotor identification system for centrifuges |
US5221250A (en) * | 1991-01-07 | 1993-06-22 | Beckman Instruments, Inc. | Coding of maximum operating speed on centrifuge rotors and detection thereof |
EP0494421A1 (en) * | 1991-01-07 | 1992-07-15 | Beckman Instruments, Inc. | Tachometer and rotor identificaton system for centrifuges |
EP0560391A2 (en) * | 1992-03-13 | 1993-09-15 | Maschinenfabrik Berthold Hermle Aktiengesellschaft | Centrifuge |
EP0560391A3 (en) * | 1992-03-13 | 1994-08-10 | Hermle Berthold Maschf Ag | Centrifuge |
EP0602587A1 (en) * | 1992-12-14 | 1994-06-22 | E.I. Du Pont De Nemours And Company | Centrifuge rotor identification and instrument control system |
EP0604912A2 (en) | 1992-12-28 | 1994-07-06 | Kabushiki Kaisha Kubota Seisakusho | Centrifuge and rotor for use therewith |
EP0604912A3 (en) * | 1992-12-28 | 1995-01-11 | Kubota Med Appliance Supply | Centrifuge and rotor for use therewith. |
DE4420562A1 (en) * | 1994-06-13 | 1995-12-14 | Busch Dieter & Co Prueftech | Optical rotation sensor for use in machine shop |
US5612544A (en) * | 1994-06-13 | 1997-03-18 | Pruftechnik Dieter Busch Ag | Measuring device with an integrated light scanning means which scans both rotations of a rotating body and coded data associated with the rotating body |
DE4420562C2 (en) * | 1994-06-13 | 1999-11-18 | Busch Dieter & Co Prueftech | Tachometer |
DE19723984C2 (en) * | 1997-06-06 | 2000-02-17 | Kendro Lab Prod Gmbh | Interchangeable centrifuge rotor with at least one magnetic body as an information carrier and a method for introducing a magnetic body |
Also Published As
Publication number | Publication date |
---|---|
EP0226886B2 (en) | 1994-01-05 |
FI864811A (en) | 1987-06-12 |
JPS6333911B2 (en) | 1988-07-07 |
US4772254A (en) | 1988-09-20 |
JPS62140659A (en) | 1987-06-24 |
EP0226886B1 (en) | 1990-08-29 |
DE3673782D1 (en) | 1990-10-04 |
FI864811A0 (en) | 1986-11-26 |
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