JPS54159289A - Automatic analytical apparatus - Google Patents

Automatic analytical apparatus

Info

Publication number
JPS54159289A
JPS54159289A JP6770578A JP6770578A JPS54159289A JP S54159289 A JPS54159289 A JP S54159289A JP 6770578 A JP6770578 A JP 6770578A JP 6770578 A JP6770578 A JP 6770578A JP S54159289 A JPS54159289 A JP S54159289A
Authority
JP
Japan
Prior art keywords
photometric
samples
absorptivity
wavelength
change
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6770578A
Other languages
Japanese (ja)
Inventor
Katsuji Yamashita
Hiroshi Umetsu
Yoshiteru Furuta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6770578A priority Critical patent/JPS54159289A/en
Publication of JPS54159289A publication Critical patent/JPS54159289A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/272—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration for following a reaction, e.g. for determining photometrically a reaction rate (photometric cinetic analysis)

Abstract

PURPOSE:To improve processing efficiency without lowering measurement accuracy and measure the reaction rates of samples by obtaining the time change rates of the photometric signals from the sum of the change amounts of the photometric signals respectively measured when the samples are stopping in a number of places of photometric parts, for the intermittently moving samples. CONSTITUTION:Light out from a light source 402 is made to two luminous fluxes 14, 16 by reflecting mirrors 404, 406. The luminous fluxes receive light absorption in reaction samples 302 and respectively enter photometers 420, 422. Concave diffraction gratings 408, 410 disperse the incident light to spectra and condense the spectra to the Rowland circles 412, 414 disposed with plural detectors 416, 418 according to photometric wavelengths. A wavelength selecting circuit 424 selects the outputs of the detectors 416, 418 in order to make two-wavelength measurement and inputs the same to logarithmic amplifiers 424, 427, the outputs whereof are then made to absorptivity signals. In a differential amplifier 428, the difference of both, and the abosorption difference between the absorption wavelength and reference wavelength is obtained. These output data are stored as the absorptivity change values respectively for 12 seconds having been measured in respectively two places of the photometric parts, in a RAM. The two absorptivity change quantities are added in a microcomputer and the added quantity is multiplied 2.5 times, whereby the absorptivity change quantity for 1 minute is obtained.
JP6770578A 1978-06-07 1978-06-07 Automatic analytical apparatus Pending JPS54159289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6770578A JPS54159289A (en) 1978-06-07 1978-06-07 Automatic analytical apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6770578A JPS54159289A (en) 1978-06-07 1978-06-07 Automatic analytical apparatus

Publications (1)

Publication Number Publication Date
JPS54159289A true JPS54159289A (en) 1979-12-15

Family

ID=13352633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6770578A Pending JPS54159289A (en) 1978-06-07 1978-06-07 Automatic analytical apparatus

Country Status (1)

Country Link
JP (1) JPS54159289A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5002392A (en) * 1989-12-01 1991-03-26 Akzo N.V. Multichannel optical monitoring system
US5017785A (en) * 1989-02-16 1991-05-21 Oy Dailab Inc. IR-spectrometric analyzing procedure and means
US5646046A (en) * 1989-12-01 1997-07-08 Akzo Nobel N.V. Method and instrument for automatically performing analysis relating to thrombosis and hemostasis

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5182697A (en) * 1974-12-26 1976-07-20 Nippon Kogaku Kk
JPS51140792A (en) * 1975-05-30 1976-12-03 Toshiba Corp Automatic chemical analysis device
JPS51148490A (en) * 1975-06-16 1976-12-20 Hitachi Ltd Continuous analyzing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5182697A (en) * 1974-12-26 1976-07-20 Nippon Kogaku Kk
JPS51140792A (en) * 1975-05-30 1976-12-03 Toshiba Corp Automatic chemical analysis device
JPS51148490A (en) * 1975-06-16 1976-12-20 Hitachi Ltd Continuous analyzing method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017785A (en) * 1989-02-16 1991-05-21 Oy Dailab Inc. IR-spectrometric analyzing procedure and means
US5002392A (en) * 1989-12-01 1991-03-26 Akzo N.V. Multichannel optical monitoring system
WO1991008455A1 (en) * 1989-12-01 1991-06-13 Akzo N.V. Multichannel optical monitoring system
US5646046A (en) * 1989-12-01 1997-07-08 Akzo Nobel N.V. Method and instrument for automatically performing analysis relating to thrombosis and hemostasis

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