公开(公告)号：US3231783A

公开(公告)日：1966-01-25

申请号：US24248562

申请日：1962-12-05

Applicant: BECKMAN INSTRUMENTS INC

Inventor： BORONKAY ATTILA D ,  RANDALL JERROLD H

IPC: G05F1/52

CPC classification number: G05F1/52 ,  Y10T307/406 ,  Y10T307/469

公开(公告)号：US3456672A

公开(公告)日：1969-07-22

申请号：US3456672D

申请日：1967-04-27

Applicant: BECKMAN INSTRUMENTS INC

Inventor： DODSON MICHAEL ,  RANDALL JERROLD H

IPC: B01L3/00 ,  G01N31/12 ,  F16T1/20

CPC classification number: B01L3/569 ,  G01N31/12 ,  Y10T137/3071

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

IPC: F02D41/14 ,  G01N21/35 ,  G01N21/26

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.

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