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。

公开(公告)号：US3408569A

公开(公告)日：1968-10-29

申请号：US39496864

申请日：1964-09-08

Applicant: BECKMAN INSTRUMENTS INC

Inventor： DOUGLASS DONALD C ,  KEEGAN JACK J

IPC: G01N27/416

CPC classification number: G01N27/4167

公开(公告)号：US3354355A

公开(公告)日：1967-11-21

申请号：US58904166

申请日：1966-10-24

Applicant: BECKMAN INSTRUMENTS INC

Inventor： CLIFFGARD ARNIE L ,  KEEGAN JACK J ,  RANDALL JERROLD H

IPC: G05B19/04 ,  H01H1/40 ,  H05K1/02 ,  H05K3/22 ,  H05K3/34

CPC classification number: H01H1/403 ,  H01R12/7094 ,  H05K3/222