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    Piggyback optical bench
    2.
    发明授权
    Piggyback optical bench 失效
    背负式光学工作台

    公开(公告)号：US3920993A

    公开(公告)日：1975-11-18

    申请号：US50698474

    申请日：1974-09-18

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： CEDERSTRAND CARL N ,  KEEGAN JACK J

    IPC: G01N21/35 ,  G01N21/26

    CPC classification number: G01N21/3504

    Abstract: An optical bench having a gas flow cell with an infrared source at one end and an infrared sensor at the other end is provided with an attachment or ''''piggyback'''' for determining the concentration of a second constituent or pollutant in a sample. The attachment comprises a sensor inserted into the gas cell adjacent to the end toward the infrared source so that a beam of radiant energy falls directly upon the inserted sensor. The invention is particularly well suited for determining the concentration of a pollutant which occurs in greater concentration or is more highly absorptive of radiant energy than that of the pollutant for which the optical bench was originally designed.

    Abstract translation: 具有在一端具有红外源的气体流通池和另一端的红外线传感器的光学工作台具有用于确定样品中第二种成分或污染物的浓度的附件或“背负式”。 该附件包括一个传感器，该传感器插入到靠近红外线源端的气室中，使得一束辐射能直接落在插入的传感器上。 本发明特别适用于确定与最初设计光学台的污染物相比发生的浓度更高或更高的辐射能吸收的污染物的浓度。

    FLUID MIXING DEVICE
    3.
    发明专利
    FLUID MIXING DEVICE 未知

    公开(公告)号：CA2035067C

    公开(公告)日：1995-06-27

    申请号：CA2035067

    申请日：1991-01-28

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： BLOUGH WILLIAM M JR ,  KEEGAN JACK J

    IPC: G01N35/02 ,  B01F3/08 ,  B01F5/00 ,  G01N1/36

    Abstract: An improved fluid mixing device comprising a mixing chamber having end walls and a cylindrical side wall. A first fluid conduit joins the mixing chamber at a first port formed in the first end. A second fluid conduit joins the mixing chamber at a second port formed in the side wall. A second fluid conduit is angled with respect to the mixing chamber to direct fluid flow from the conduit through the second port generally along the wall of the mixing chamber to create a rapid vortexing action. A third conduit joins the mixing chamber at a third port in the second end. A fourth conduit intersects the third conduit, the center lines of the third and fourth conduits offset at the area of intersection.

    TIMING CONTROL CIRCUIT FOR AN AUTOMOTIVE ENGINE IGNITION ANALYZER
    4.
    发明专利
    TIMING CONTROL CIRCUIT FOR AN AUTOMOTIVE ENGINE IGNITION ANALYZER 未知

    公开(公告)号：CA1054222A

    公开(公告)日：1979-05-08

    申请号：CA266554

    申请日：1976-11-25

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： REEVES GEORGE I ,  KEEGAN JACK J

    IPC: F02P17/02 ,  F02P17/06 ,  G01R13/24 ,  G01R13/32 ,  F02P17/00

    Abstract: An improved timing control circuit for an automotive engine ignition analyzer is disclosed providing an improved sweep signal for the oscilloscope of the analyzer and providing both retard and advance lamp triggering signals for driving a strobe lamp associated with the analyzer. The ramp generator incorporated provides self compensation for changes in the engine speed of revolution by employing a phase lock loop with phase detector, integrator and voltage controlled oscillator. The oscillator provides a ramp voltage for use as a sweep signal and input to the strobe lamp signal generator. The ramp voltage provides a sweep signal of substantially constant length while the engine speed varies over the range of idling to full speed. The timing control portion for the strobe lamp used in adjusting the timing of an internal combustion engine provides a signal which retards lamp triggering for setting ignition advance and a signal which advances lamp triggering for setting ignition retard, The circuit provides for advance and retard selection, the amount of advance or retard, and zero degree triggering for engines with various numbers of cylinders. The lamp circuit employs the ramp voltage synchronized with engine timing, a reference voltage for setting the amount of advance or retard, and a comparator which provides a triggering signal for the lamp when the ramp and reference voltages match.

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