GB950982A - Devices in ultracentrifuges for detecting movements of the rotor - Google Patents

Devices in ultracentrifuges for detecting movements of the rotor

Info

Publication number
GB950982A
GB950982A GB912961A GB912961A GB950982A GB 950982 A GB950982 A GB 950982A GB 912961 A GB912961 A GB 912961A GB 912961 A GB912961 A GB 912961A GB 950982 A GB950982 A GB 950982A
Authority
GB
United Kingdom
Prior art keywords
rotor
march
casing
coil
ultracentrifuges
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.)
Expired
Application number
GB912961A
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.)
Reactor Centrum Nederland
Original Assignee
Reactor Centrum Nederland
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 Reactor Centrum Nederland filed Critical Reactor Centrum Nederland
Publication of GB950982A publication Critical patent/GB950982A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/08—Centrifuges for separating predominantly gaseous mixtures
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/14—Balancing rotary bowls ; Schrappers
    • B04B9/146—Unbalance detection devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/2033—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils controlling the saturation of a magnetic circuit by means of a movable element, e.g. a magnet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

Abstract

950,982. Measuring electrically. REACTOR CENTRUM NEDERLAND. March 13,1961 [March 17, 1960], No. 9129/61. Heading G1N. A centrifuge whose rotor 2 (Fig. 1) is driven by a motor 5, 6 and maintained vertical by cooperating magnets 9, 10 (Fig. 2), has a coil 16 in a magnetic, preferably ferrite, core 17 located on the outside of the casing 1 so that normally existing irregularities in the fields of magnets 9, 10 induce an alternating voltage in coil 16, which is amplified at 18 and indicates at 19 the speed of rotation or the extent of the wobble. By using two coils displaced by 90 degrees round the casing 1, the rest position of the centrifuge rotor can be determined from their inductances.
GB912961A 1960-03-17 1961-03-13 Devices in ultracentrifuges for detecting movements of the rotor Expired GB950982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL249509 1960-03-17

Publications (1)

Publication Number Publication Date
GB950982A true GB950982A (en) 1964-03-04

Family

ID=19752229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB912961A Expired GB950982A (en) 1960-03-17 1961-03-13 Devices in ultracentrifuges for detecting movements of the rotor

Country Status (3)

Country Link
CH (1) CH390798A (en)
DE (1) DE1144195B (en)
GB (1) GB950982A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335119C2 (en) * 1993-10-15 1997-11-20 Eppendorf Geraetebau Gmbh Laboratory centrifuge with unbalance shutdown
CN105521876A (en) * 2016-01-15 2016-04-27 上海戴宝机械设备有限公司 Tubular centrifuge and method thereof for keeping balance of rotating drum
DE102017128027A1 (en) * 2017-11-27 2019-05-29 Gea Mechanical Equipment Gmbh separator

Also Published As

Publication number Publication date
CH390798A (en) 1965-04-15
DE1144195B (en) 1963-02-21

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