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公开(公告)号：US3114090A
公开(公告)日：1963-12-10
申请号：US18282062
申请日：1962-03-27
Applicant: BECKMAN INSTRUMENTS INC
Inventor： DAVIS JAMES C , SPRACKLEN STANFORD B
IPC: G01N30/86
CPC classification number: G01N30/8624
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公开(公告)号：US3211980A
公开(公告)日：1965-10-12
申请号：US20113462
申请日：1962-06-08
Applicant: BECKMAN INSTRUMENTS INC
Inventor： DAVIS JAMES C , SAWA KENNETH B
IPC: G01N30/86
CPC classification number: G01N30/8624
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公开(公告)号：US3562522A
公开(公告)日：1971-02-09
申请号：US3562522D
申请日：1968-09-18
Applicant: BECKMAN INSTRUMENTS INC
Inventor： CEDERSTRAND CARL N , DAVIS JAMES C , KEENAN CHARLES A , RANDALL JERROLD H
CPC classification number: F02D41/1451 , G01N21/3504
Abstract: A nondispersive infrared analyzer having a source, flow cell, filter and detector is disclosed. The inlet to the flow cell may be switched from one of two intakes and the outlet is connected to a jet pump. With air flowing through the cell the zero suppression control is adjusted to reduce the signal input to the DC amplifier to zero. The calibration blade is started and the span control adjusted to provide a given up-scale reading of the meter. The analyzer is then calibrated to provide a reading directly in concentration of the desired constituent.
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公开(公告)号：US3211979A
公开(公告)日：1965-10-12
申请号：US20113362
申请日：1962-06-08
Applicant: BECKMAN INSTRUMENTS INC
Inventor： DAVIS JAMES C
IPC: G01N30/86
CPC classification number: G01N30/8624
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