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FR2394809A1 - Liq. chromatograph signal analyser - has microprocessor to analyse pulse counts formed by signals produced by successive melting of constituents - Google Patents

Liq. chromatograph signal analyser - has microprocessor to analyse pulse counts formed by signals produced by successive melting of constituents

Info

Publication number
FR2394809A1
FR2394809A1 FR7818000A FR7818000A FR2394809A1 FR 2394809 A1 FR2394809 A1 FR 2394809A1 FR 7818000 A FR7818000 A FR 7818000A FR 7818000 A FR7818000 A FR 7818000A FR 2394809 A1 FR2394809 A1 FR 2394809A1
Authority
FR
France
Prior art keywords
microprocessor
signal
analyse
give
liq
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
FR7818000A
Other languages
French (fr)
Inventor
Michael Murphy
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.)
Milton Roy Europa BV
Original Assignee
Milton Roy Europa BV
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 Milton Roy Europa BV filed Critical Milton Roy Europa BV
Publication of FR2394809A1 publication Critical patent/FR2394809A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/252—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with conversion of voltage or current into frequency and measuring of this frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/86—Signal analysis
    • G01N30/8603—Signal analysis with integration or differentiation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/04—Measuring peak values or amplitude or envelope of AC or of pulses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/86—Signal analysis
    • G01N30/8603—Signal analysis with integration or differentiation
    • G01N2030/862—Other mathematical operations for data preprocessing

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The system comprises a pulse former at a variable frequency in response to variations of the input signal, a converter to give the input signal in numeric form, a counter to count the impulses produced during successive time intervals, a primary memory to record these counts, a microprocessor to analyse the memorised impulse counts and give a resultant signal, a secondary memory in which a predetermined program is memorised to control the operation of the microprocessor, and to an output signal unit to give the resultant. The microprocessor distinguishes the points of the base line signal, and etects the locus of each point or the appearance of a major or minor point following melting, giving the signal which represents the surface of the first point in relation to the base line signal. The secondary memory gives an output signal representing the height of the surface in the column, the output signal being made easily read on a teleprinter.
FR7818000A 1977-06-17 1978-06-15 Liq. chromatograph signal analyser - has microprocessor to analyse pulse counts formed by signals produced by successive melting of constituents Pending FR2394809A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE124877A IE771248L (en) 1977-06-17 1977-06-17 Measuring electrical signals

Publications (1)

Publication Number Publication Date
FR2394809A1 true FR2394809A1 (en) 1979-01-12

Family

ID=11024289

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7818000A Pending FR2394809A1 (en) 1977-06-17 1978-06-15 Liq. chromatograph signal analyser - has microprocessor to analyse pulse counts formed by signals produced by successive melting of constituents

Country Status (5)

Country Link
BE (1) BE868151A (en)
DE (1) DE2826868A1 (en)
FR (1) FR2394809A1 (en)
IE (1) IE771248L (en)
NL (1) NL7806536A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030987A1 (en) * 1980-06-05 1981-12-10 Müszeripari Kutato Intezet, Budapest Extreme value detection and noise compensation system - compares stored sampled value and output value with mean value
FR2532430A1 (en) * 1982-08-25 1984-03-02 Core Lab Inc DEVICE FOR PROCESSING SIGNALS NOTABLY APPLICABLE TO THE GAS CHROMATOGRAPH

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8005311A (en) * 1980-09-24 1982-04-16 Philips Nv Apparatus for interrogating a measurement data with pre-processing of the illustrated signal values.
US5094741A (en) * 1990-03-02 1992-03-10 Hewlett-Packard Company Decoupled flow and pressure setpoints in an extraction instrument using compressible fluids
US5240603A (en) * 1990-03-02 1993-08-31 Hewlett-Packard Company Decoupled flow and pressure setpoints in an extraction instrument using compressible fluids
US5322626A (en) * 1990-03-02 1994-06-21 Hewlett-Packard Company Decoupled flow and pressure setpoints in an extraction instrument using compressible fluids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030987A1 (en) * 1980-06-05 1981-12-10 Müszeripari Kutato Intezet, Budapest Extreme value detection and noise compensation system - compares stored sampled value and output value with mean value
FR2532430A1 (en) * 1982-08-25 1984-03-02 Core Lab Inc DEVICE FOR PROCESSING SIGNALS NOTABLY APPLICABLE TO THE GAS CHROMATOGRAPH

Also Published As

Publication number Publication date
NL7806536A (en) 1978-12-19
DE2826868A1 (en) 1979-01-11
IE771248L (en) 1978-12-17
BE868151A (en) 1978-10-02

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