GB1313427A - Flight measuring apparatus - Google Patents

Flight measuring apparatus

Info

Publication number
GB1313427A
GB1313427A GB2455270A GB2455270A GB1313427A GB 1313427 A GB1313427 A GB 1313427A GB 2455270 A GB2455270 A GB 2455270A GB 2455270 A GB2455270 A GB 2455270A GB 1313427 A GB1313427 A GB 1313427A
Authority
GB
United Kingdom
Prior art keywords
voltage
photo
multiplier
current
densitometer
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
GB2455270A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1313427A publication Critical patent/GB1313427A/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
    • G01N21/25—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
    • 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
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • 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
    • G01N21/86—Investigating moving sheets

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

1313427 Densitometer W CHILDERS 21 May 1970 [22 May 1969] 24552/70 Heading G1A In a densitometer in which the dynodes of a photo-multiplier are energized by a capacitor 25 in an R.C. circuit in which the voltage disc exponentially, a pulse developed by a comparison of a reference current with the photo-multiplier current in a level detector 30 is applied to start a counter 51, 52, 54, 55 when the photo-multiplier current which is a function of voltage and incident light reaches a predetermined value and a stop pulse is arranged to terminate the count when a zero density equivalent voltage is detected by amplifier 40 and reference voltage 43. The capacitor is charged by the operation of start switch 18, and the cathode and first dynode are energized from a floating source 19. The count which is equivalent to density is stored in the counters and transferred to indicators 2, 3, 4. Light is led to and from the object by light guides in a head-movable across the surface. The exponential decay rate may be adjusted.
GB2455270A 1969-05-22 1970-05-21 Flight measuring apparatus Expired GB1313427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82678869A 1969-05-22 1969-05-22

Publications (1)

Publication Number Publication Date
GB1313427A true GB1313427A (en) 1973-04-11

Family

ID=25247534

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2455270A Expired GB1313427A (en) 1969-05-22 1970-05-21 Flight measuring apparatus

Country Status (5)

Country Link
JP (1) JPS5420869B1 (en)
CH (1) CH524138A (en)
DE (1) DE2023694A1 (en)
FR (1) FR2048596A5 (en)
GB (1) GB1313427A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806718A (en) * 1972-05-31 1974-04-23 Union Carbide Corp Calibration circuit suitable for centrifugal type chemical analyzer
DE2834642A1 (en) * 1978-08-08 1980-02-28 Bosch Gmbh Robert Measurement of soot in diesel engine exhausts - using filter paper and monitoring with a light beam followed by digital monitoring system

Also Published As

Publication number Publication date
FR2048596A5 (en) 1971-03-19
CH524138A (en) 1972-06-15
DE2023694A1 (en) 1970-12-17
JPS5420869B1 (en) 1979-07-26

Similar Documents

Publication Publication Date Title
US4071761A (en) Method for determining random coincidence count rate in a scintillation counter utilizing the coincidence technique
US3541311A (en) Nuclear radiation digital dose measuring system
US3093734A (en) Radiation dosimeter reader
GB1145713A (en) Method and apparatus for counting standardization in scintillation spectrometry
US3339070A (en) Air monitoring system having a scintillating plastic and a phosphorescent film with means to detect light pulses with different decay times
US2796533A (en) Logarithmic count rate or frequency meter
US2550107A (en) Radiation detector
GB1313427A (en) Flight measuring apparatus
US2750513A (en) Nuclear radiation measuring instrument
GB953715A (en) Suspended particle counter
US3004167A (en) Nuclear particle discriminators
Emeléus The number of β-particles from Radium E
US3296438A (en) Nuclear particle detection system and calibration means therefor
US2716523A (en) Device for counting alpha and beta particles
McGuire et al. Apparatus for precise measurement of scintillator decay times
US2645724A (en) Means for indicating condition of memory element
Yamashita et al. Probability and time distribution of afterpulses in GaP first dynode photomultiplier tubes
GB836616A (en) Improvements relating to pinhole detection apparatus
US2831121A (en) Apparatus for detecting alpha and beta rays
Jelley et al. The Time Distribution of Delayed Particles in Extensive Air Showers using a Liquid Scintillation Counter of Large Area
US2979617A (en) Scintillation detector circuit
GB1154825A (en) A method of, and a device for, Determining the Isotope Content of a Uranium Component
US2824974A (en) Radiation detector
JPS5713380A (en) Discriminating circuit for radiation detecting signal
Saltmarsh et al. A simple π+ detector for energies of 10–70 MeV

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees