Imperforate bowl: centrifugal separators – With condition responsive means – For controlling drive of driven means within bowl
Patent
1991-01-07
1993-06-22
Strecker, Gerard R.
Imperforate bowl: centrifugal separators
With condition responsive means
For controlling drive of driven means within bowl
494 10, 324161, 324166, 324174, 318163, 318268, 388924, B04B 1300, B04B 910, G01P 3487
Patent
active
052212505
ABSTRACT:
A centrifuge rotor overspeed protection system which can operate with rotors of at least two speed ranges. A set of coding elements are provided on the rotors coded to represent the actual maximum safe speed rating of the rotor. An additional set of coding elements coded to correspond to the maximum speed in the lower speed range are also provided such that the rotor can be operated at the maximum speed possible in a prior art centrifuge designed for operation in the lower speed range. The detection circuit for the coding elements automatically adjusts the detection threshold depending on the average values of the sensor output peaks corresponding to the codes.
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Beckman Instruction Manual Model L8-60M; inside front page and p. 7, Sep., 1985.
Beckman Instruments Inc.
Edmonds Warren S.
Harder P. R.
Liu Wen
May William H.
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