GB1506294A – Gas cells
– Google Patents
GB1506294A – Gas cells
– Google Patents
Gas cells
Info
Publication number
GB1506294A
GB1506294A
GB24174/75A
GB2417475A
GB1506294A
GB 1506294 A
GB1506294 A
GB 1506294A
GB 24174/75 A
GB24174/75 A
GB 24174/75A
GB 2417475 A
GB2417475 A
GB 2417475A
GB 1506294 A
GB1506294 A
GB 1506294A
Authority
GB
United Kingdom
Prior art keywords
chambers
gas
windows
chopper
filter
Prior art date
1974-06-05
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
GB24174/75A
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.)
Space Systems Loral LLC
Original Assignee
Ford Aerospace and Communications 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.)
1974-06-05
Filing date
1975-06-04
Publication date
1978-04-05
1975-06-04
Application filed by Ford Aerospace and Communications Corp
filed
Critical
Ford Aerospace and Communications Corp
1978-04-05
Publication of GB1506294A
publication
Critical
patent/GB1506294A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
238000005192
partition
Methods
0.000
abstract
2
229920006333
epoxy cement
Polymers
0.000
abstract
1
238000005259
measurement
Methods
0.000
abstract
1
230000007935
neutral effect
Effects
0.000
abstract
1
230000003287
optical effect
Effects
0.000
abstract
1
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
G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
G01N21/3518—Devices using gas filter correlation techniques; Devices using gas pressure modulation techniques
Abstract
1506294 Gaseous filters for optical gas analysers FORD AEROSPACE & COMMUNICATIONS CORP 4 June 1975 [5 June 1974] 24174/75 Heading G1A A gaseous filter cell for use as a rotatable chopper in a non dispersive gas analyzer comprises a cylindrical body 24, Fig. 2, which can be fitted to a shaft by a collar 28 and which has gas chambers 25, 26 defined by end windows 31, 32 and a partition between the chambers; the chambers can be filled with appropriate gas through apertures 29, 30 which are normally closed by screws and O ring seals. The assembly is secured with epoxy cement, and the windows may each be in two parts to aid cementing to the partition between the chambers. If the gas pressures are above atmosphere, a design using end caps bearing on the windows may be used, Fig. 10, (not shown). A chopper 33 may be included on or between the windows. To fill the chambers, an attachment as in Fig. 6 is bolted to a flat machined on the assembly, or is held on by a strap, Fig. 7, (not shown). Knob 56 allows screw 35 to be released so that gas may be passed into the chamber via a supply line (not shown) connected to the attachment at 57. One of the chambers may be evacuated and covered with a neutral filter; in place of that filter, the chopper spacing may be altered to reduce the energy flow through the evacuated chamber. A design with four chambers is given, Fig. 9, for use with two light beams to permit two measurements to be made simultaneously in a gas analyzer.
GB24174/75A
1974-06-05
1975-06-04
Gas cells
Expired
GB1506294A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US476373A
US3926527A
(en)
1974-06-05
1974-06-05
Rotating gas correlation cell
Publications (1)
Publication Number
Publication Date
GB1506294A
true
GB1506294A
(en)
1978-04-05
Family
ID=23891578
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB24174/75A
Expired
GB1506294A
(en)
1974-06-05
1975-06-04
Gas cells
Country Status (6)
Country
Link
US
(1)
US3926527A
(en)
JP
(1)
JPS557178B2
(en)
CA
(1)
CA1035166A
(en)
DE
(1)
DE2524614A1
(en)
GB
(1)
GB1506294A
(en)
IT
(1)
IT1047752B
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US10760972B1
(en)
*
2017-12-07
2020-09-01
National Technology & Engineering Solutions Of Sandia, Llc
Modular low cost trackerless spectral sensor
Families Citing this family (20)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5456882A
(en)
*
1977-10-15
1979-05-08
Horiba Ltd
Optical modulation motor
NL94317C
(en)
*
1978-11-29
US4234857A
(en)
*
1979-04-13
1980-11-18
Calspan Corporation
Centrifugal gasdynamic window
JPS6041850U
(en)
*
1983-08-30
1985-03-25
株式会社 堀場製作所
gas analyzer
US4817013A
(en)
*
1986-10-17
1989-03-28
Nellcor, Inc.
Multichannel gas analyzer and method of use
US4882492A
(en)
*
1988-01-19
1989-11-21
Biotronics Associates, Inc.
Non-invasive near infrared measurement of blood analyte concentrations
US5183042A
(en)
*
1989-05-23
1993-02-02
Vivascan Corporation
Electromagnetic method and apparatus to measure constituents of human or animal tissue
US5137023A
(en)
*
1990-04-19
1992-08-11
Worcester Polytechnic Institute
Method and apparatus for monitoring blood analytes noninvasively by pulsatile photoplethysmography
EP0401453B1
(en)
*
1989-05-23
1992-09-02
Biosensors Technology, Inc.
Method for determining by absorption of radiations the concentration of substances in absorbing and turbid matrices
US5178142A
(en)
*
1989-05-23
1993-01-12
Vivascan Corporation
Electromagnetic method and apparatus to measure constituents of human or animal tissue
US5112124A
(en)
*
1990-04-19
1992-05-12
Worcester Polytechnic Institute
Method and apparatus for measuring the concentration of absorbing substances
US5277181A
(en)
*
1991-12-12
1994-01-11
Vivascan Corporation
Noninvasive measurement of hematocrit and hemoglobin content by differential optical analysis
AU2245092A
(en)
*
1991-12-31
1993-07-28
Vivascan Corporation
Blood constituent determination based on differential spectral analysis
EP0769688B1
(en)
*
1995-05-08
2003-01-22
Japan Energy Corporation
Environment monitor apparatus
US5777775A
(en)
*
1996-10-18
1998-07-07
The Regents Of The University Of California
Mechanical beam isolator for high-power laser systems
CA2306290A1
(en)
*
2000-04-20
2001-10-20
Applied Physics Specialties Limited
Variable optical filter
US7003337B2
(en)
*
2002-04-26
2006-02-21
Vivascan Corporation
Non-invasive substance concentration measurement using and optical bridge
US8175666B2
(en)
*
2002-04-26
2012-05-08
Grove Instruments, Inc.
Three diode optical bridge system
CN104237126B
(en)
*
2014-09-09
2017-03-01
中国科学院电工研究所
A kind of optoacoustic spectroscopy detection means of employing axial multilayer optical filter dish structure
JP6838487B2
(en)
*
2017-05-10
2021-03-03
株式会社豊田中央研究所
Concentration measuring device and concentration measuring method
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3090861A
(en)
*
1960-01-28
1963-05-21
Edward O Haenni
Cell for use in radiation absorption analysis
US3552865A
(en)
*
1968-04-01
1971-01-05
Beckman Instruments Inc
High pressure flow-through cuvette
US3588496A
(en)
*
1968-12-26
1971-06-28
Gen Electric
Radiation analysis apparatus having an absorption chamber with partially reflective mirror surfaces
US3723731A
(en)
*
1971-03-18
1973-03-27
Environmental Res & Tech
Absorption spectroscopy
US3729264A
(en)
*
1971-08-09
1973-04-24
Horiba Ltd
Analyzer using the rotor of a motor as a light chopper
US3793525A
(en)
*
1973-01-02
1974-02-19
Philco Ford Corp
Dual cell non-dispersive gas analyzer
1974
1974-06-05
US
US476373A
patent/US3926527A/en
not_active
Expired – Lifetime
1975
1975-06-03
DE
DE19752524614
patent/DE2524614A1/en
active
Pending
1975-06-03
CA
CA228,284A
patent/CA1035166A/en
not_active
Expired
1975-06-04
IT
IT49920/75A
patent/IT1047752B/en
active
1975-06-04
GB
GB24174/75A
patent/GB1506294A/en
not_active
Expired
1975-06-05
JP
JP6713175A
patent/JPS557178B2/ja
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US10760972B1
(en)
*
2017-12-07
2020-09-01
National Technology & Engineering Solutions Of Sandia, Llc
Modular low cost trackerless spectral sensor
US11460344B2
(en)
2017-12-07
2022-10-04
National Technology & Engineering Solutions Of Sandia, Llc
Modular low cost trackerless spectral sensor
Also Published As
Publication number
Publication date
CA1035166A
(en)
1978-07-25
JPS557178B2
(en)
1980-02-22
JPS516586A
(en)
1976-01-20
IT1047752B
(en)
1980-10-20
DE2524614A1
(en)
1975-12-18
US3926527A
(en)
1975-12-16
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Legal Events
Date
Code
Title
Description
1978-08-16
PS
Patent sealed [section 19, patents act 1949]
1982-01-06
PCNP
Patent ceased through non-payment of renewal fee
