GB1326041A - Testing - Google Patents

Testing

Info

Publication number
GB1326041A
GB1326041A GB3625870A GB3625870A GB1326041A GB 1326041 A GB1326041 A GB 1326041A GB 3625870 A GB3625870 A GB 3625870A GB 3625870 A GB3625870 A GB 3625870A GB 1326041 A GB1326041 A GB 1326041A
Authority
GB
United Kingdom
Prior art keywords
sample
radiation
reference voltage
light
photo
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.)
Expired
Application number
GB3625870A
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.)
Environment One Corp
Original Assignee
Environment One Corp
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 Environment One Corp filed Critical Environment One Corp
Priority to GB1562070A priority Critical patent/GB1326042A/en
Publication of GB1326041A publication Critical patent/GB1326041A/en
Expired 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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/532—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke with measurement of scattering and transmission
    • 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
    • G01N21/274—Calibration, base line adjustment, drift correction
    • 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
    • G01N21/274—Calibration, base line adjustment, drift correction
    • G01N21/276—Calibration, base line adjustment, drift correction with alternation of sample and standard in optical path
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2888—Lubricating oil characteristics, e.g. deterioration
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1326041 Photo-electric monitoring ENVIRONMENT ONE CORP 27 July 1970 [5 Aug 1969] 36258/70 Heading G1A In an arrangement for comparing a radiation affecting property of a sample with that of a reference, standard and reference signals are produced in a radiation responsive means by radiation from a single source passed alternately through the two and a further two signals are produced in a radiation responsive device exposed to radiation scattered substantially at right angles to the incident beam: A rotor 17. Fig.1, which may be rotated by oil flow or may be motor driven, has at least one pair of diametrically opposed channel apertures 22 through one of which the sample may flow and in the other of which the reference substance is located, and in rotation, the apertures are periodically inserted in the light path between a source 27 and photo-cells 34 and 44, to produce the transmissivity and scattering signals respectively. A reflector 36 also rotated into the light path generates pulses in a further photo-detector 39 which pulses are subsequently used for gating. The differences between sample and reference may be zeroed by a calibrator switch 67, Fig. 9 (not shown) when the sample is known to be in a desired condition, and subsequent changes in excess of a reference voltage are indicated at 61, after comparison with the reference voltage in a differential amplifier 60. Comparison of the reference attenuation signal with the reference voltage is used also to control the intensity of test source or the gain of the signal pre-amplifier 51 and 81, and a lamp 78 is connected to provide a visual alarm in the event of excessive error. In the circuit measuring the scattered light, the gain of the amplifier 86 is controlled by a servomotor 96 in response to the difference between the signal developed by light scattered by the reference substance and a reference voltage from 97 in order to compensate for attenuation of the light by the deteriorating sample substance. The apparatus may include a flow-meter, and the rotor may include a number of pairs of apertures including filters whereby tests may be made in different colour ranges. The reference substance may be a glass or a plastics material and it may occupy only the aperture space between sensors 44 and 34 so that oil in the remaining portion can effect systems compensation. The sample and reference substances, may be fixed and interrogated by an oscillating mirror arrangement.
GB3625870A 1969-08-05 1970-07-27 Testing Expired GB1326041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1562070A GB1326042A (en) 1969-08-05 1970-07-27 Testing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84767569A 1969-08-05 1969-08-05

Publications (1)

Publication Number Publication Date
GB1326041A true GB1326041A (en) 1973-08-08

Family

ID=25301214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3625870A Expired GB1326041A (en) 1969-08-05 1970-07-27 Testing

Country Status (3)

Country Link
DE (1) DE2038542C3 (en)
FR (1) FR2057795A5 (en)
GB (1) GB1326041A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2650673A4 (en) * 2010-12-08 2017-08-23 Hitachi High-Technologies Corporation Automatic analytical apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3328171A1 (en) * 1983-08-04 1985-02-14 Leybold-Heraeus GmbH, 5000 Köln CUEVETTE FOR GAS ANALYZER
DE3701348A1 (en) * 1987-01-19 1988-07-28 Bayerische Motoren Werke Ag Method of testing the quality of a working fluid of motor vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2650673A4 (en) * 2010-12-08 2017-08-23 Hitachi High-Technologies Corporation Automatic analytical apparatus

Also Published As

Publication number Publication date
DE2038542A1 (en) 1971-03-25
DE2038542B2 (en) 1979-07-05
DE2038542C3 (en) 1980-03-20
FR2057795A5 (en) 1971-05-21

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee