公开(公告)号：JPS55166029A

公开(公告)日：1980-12-24

申请号：JP7440879

申请日：1979-06-12

Applicant: HORIBA LTD

Inventor： TANEI FUMIO ,  IKEDA TOSHIAKI ,  ASANO ICHIROU

IPC: G01N21/27 ,  G01N21/25

Abstract: PURPOSE:To make possible stable measurement for a long time by logarithmically amplifying the alternate measuring signal extracted as the absorption spectrum and the alternate measuring signal not containing this component prior to AC subtraction. CONSTITUTION:The reference sample Z and the measuring sample S alternately flows to the cell 1 to generate changes in the photoabsorption at one cycle due to both the samples Z and S, and the AC waveform close to the sinewave is detected with detectors 9 and 9'. The alternately measuring signals outputted from the detectors 9 and 9' are respectively processed with the preamplifiers 10 and 10', the logarithmic amplifiers 11 and 11', the AC amplifiers 12 and 12' and the rectifiers 13 and 13' and then with the subtractor 14. The output from the subtractor 14 is given as the function of only the concentration of the sample to be measured. Thus, any variation of the concentration is indicated as changes in the output.

公开(公告)号：JPS53144397A

公开(公告)日：1978-12-15

申请号：JP5967277

申请日：1977-05-21

Applicant: HORIBA LTD

Inventor： IKEDA TOSHIAKI

IPC: G01N21/35 ,  C02F1/40 ,  G01N1/00 ,  G01N21/3577 ,  G01N31/00 ,  G01N33/28

公开(公告)号：JPS5365784A

公开(公告)日：1978-06-12

申请号：JP14095676

申请日：1976-11-24

Applicant: HORIBA LTD

Inventor： TANEI FUMIO ,  IKEDA TOSHIAKI

IPC: G01N1/00 ,  G01N33/18

公开(公告)号：JPS5317772A

公开(公告)日：1978-02-18

申请号：JP9175876

申请日：1976-07-31

Applicant: HORIBA LTD

Inventor： IKEDA TOSHIAKI ,  ASANO ICHIROU

IPC: G01R19/00 ,  G01D3/02 ,  G01R15/00 ,  G01R19/32

公开(公告)号：JPS5289968A

公开(公告)日：1977-07-28

申请号：JP639476

申请日：1976-01-22

Applicant: HORIBA LTD

Inventor： TANEI FUMIO ,  IKEDA TOSHIAKI

IPC: G01R19/02

公开(公告)号：JPS5282377A

公开(公告)日：1977-07-09

申请号：JP15738575

申请日：1975-12-29

Applicant: HORIBA LTD

Inventor： IKEDA TOSHIAKI

IPC: G01N21/59 ,  G01N21/00 ,  G01N21/15 ,  G01N27/28 ,  G01N27/38

公开(公告)号：JPS5213389A

公开(公告)日：1977-02-01

申请号：JP8946875

申请日：1975-07-22

Applicant: HORIBA LTD

Inventor： TANEI FUMIO ,  IKEDA TOSHIAKI

IPC: G01N21/17 ,  G01N27/00 ,  G01N27/06 ,  G01N33/18

Abstract: PURPOSE:To measure the dirtiness load in waste water or smake in the past certain period counted from a certain point of time.

公开(公告)号：JPS5769492A

公开(公告)日：1982-04-28

申请号：JP14593380

申请日：1980-10-18

Applicant: Horiba Ltd

Inventor： IKEDA TOSHIAKI

IPC: F23N5/08 ,  G01J3/427 ,  G08B17/12

CPC classification number: G08B17/12

公开(公告)号：JPS55160836A

公开(公告)日：1980-12-15

申请号：JP7044179

申请日：1979-06-02

Applicant: HORIBA LTD

Inventor： TANEI FUMIO ,  IKEDA TOSHIAKI ,  ASANO ICHIROU

IPC: G01N21/59 ,  G01N21/85

Abstract: PURPOSE:To remove indication drifts in principle due to contamination of cell window and deterioration of luminous source by causing the known reference sample and a sample to be measured to alternately flow to a measuring cell thereby to process the output obtained. CONSTITUTION:Light emitted from a luminous source 1 passes through the sample within a cell 2 to cause photo absorption, and a measuring wavelength is selected by an interference filter 8 and the light is received by a detector 9. Since the reference sample Z and the sample to be measured S alternately flow, variation of photo absorption due to both samples occurs in a predetermined period. The detector 9 detects an AC waveform close to a sin wave. The output of the detector 9 is added to a meter 14 by way of a preamplifier 11 and further an AC amplifier 12 and a rectifier 13.

公开(公告)号：JPS5394892A

公开(公告)日：1978-08-19

申请号：JP948277

申请日：1977-01-31

Applicant: HORIBA LTD

Inventor： IKEDA TOSHIAKI

IPC: G08B21/00