GB1078976A - Radiation analyser - Google Patents
Radiation analyserInfo
- Publication number
- GB1078976A GB1078976A GB1726264A GB1726264A GB1078976A GB 1078976 A GB1078976 A GB 1078976A GB 1726264 A GB1726264 A GB 1726264A GB 1726264 A GB1726264 A GB 1726264A GB 1078976 A GB1078976 A GB 1078976A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sample
- acetone
- beams
- radiation
- switching
- 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
Links
- 230000005855 radiation Effects 0.000 title abstract 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 8
- 238000010521 absorption reaction Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 239000012530 fluid Substances 0.000 abstract 1
- 230000031700 light absorption Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 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
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
1,078,976. Photo-electric light absorption measurement. DISTILLERS CO. Ltd. April 15, 1965 [April 25, 1964], No. 17262/64. Heading G1A. In a radiation fluid analyzer of the kind described in Specification No. 899, 973 for determining the concentration of water in acetone by the absorption of infrared radiation in an overtone wavelength absorption band where chopped reference and sample beams are passed alternately by means of a cylindrical chopper through reference and sample cells of acetone and acetone and water and the resulting amplified D.C. signals passed by means of a switch to respective channels of a two-channel D.C. ratio measuring device, the switch is a transistor switch having a neutral position and driven into one of one two switching states by one of two photo-diodes placed in the path of the corresponding chopped beam. Alternatively, both chopped beams or the single beam before division and chopping into reference and sample beams may be passed through a single cell through which the water and acetone solution is flowing. In both cases filters select the necessary absorption bands. The cylindrical chopper Fig. 2 (not shown) rotates about its longitudinal axis which is perpendicular to a beam from a tungsten filament lamp and has two main passage-ways disposed at right angles to one another to pass the reference and sample beam alternately. Each has a narrower adjoining passage-way which extends over a greater arc of the cylinder and passes radiation to the switching photo-diodes. A plate placed after the cylinder has two main apertures to direct the reference and sample beams to the sample cells and two subsidiary apertures after which are placed the two switching diodes which only receive radiation from the adjoining passage-ways. The extended arc enables the switching signal beam to lead and trail the corresponding reference or sample beam and thereby ensure that the transistor switch feeds the correct channel for the whole of the time the corresponding reference or sample beam falls on the detector. An A.C. coupled amplifier is used which has a D.C. restoration circuit succeeding it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1726264A GB1078976A (en) | 1964-04-25 | 1964-04-25 | Radiation analyser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1726264A GB1078976A (en) | 1964-04-25 | 1964-04-25 | Radiation analyser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1078976A true GB1078976A (en) | 1967-08-09 |
Family
ID=10092115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1726264A Expired GB1078976A (en) | 1964-04-25 | 1964-04-25 | Radiation analyser |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1078976A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2336691A1 (en) * | 1975-12-23 | 1977-07-22 | Baxter Travenol Lab | OPTICAL DISTRIBUTION DEVICE |
| US4241998A (en) | 1978-01-20 | 1980-12-30 | Hoffmann-La Roche Inc. | Spectrophotometer |
-
1964
- 1964-04-25 GB GB1726264A patent/GB1078976A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2336691A1 (en) * | 1975-12-23 | 1977-07-22 | Baxter Travenol Lab | OPTICAL DISTRIBUTION DEVICE |
| US4241998A (en) | 1978-01-20 | 1980-12-30 | Hoffmann-La Roche Inc. | Spectrophotometer |
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