DE3426472A1 - Photometer - Google Patents
PhotometerInfo
- Publication number
- DE3426472A1 DE3426472A1 DE3426472A DE3426472A DE3426472A1 DE 3426472 A1 DE3426472 A1 DE 3426472A1 DE 3426472 A DE3426472 A DE 3426472A DE 3426472 A DE3426472 A DE 3426472A DE 3426472 A1 DE3426472 A1 DE 3426472A1
- Authority
- DE
- Germany
- Prior art keywords
- cuvette
- photometer
- receiver
- solid
- section
- 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.)
- Granted
Links
- 239000007787 solid Substances 0.000 claims description 15
- 239000002033 PVDF binder Substances 0.000 claims description 7
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 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
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Hartmann & Braun Frankfurt, 12. Juli 1984Hartmann & Braun Frankfurt, July 12, 1984
Mk/kiMk / ki
Aktiengesellschaft _ - Grafstraße 97 Mk/küAktiengesellschaft _ - Grafstrasse 97 Mk / kü
"Fotometer""Photometer"
Durch die DE-OS 29 10 188 sind Fotometer bekannt geworden, bei denen die Lichtstrahlen, die die Meßküvette bzw. Vergleichsküvette durchlaufen haben, von einem gasgefüllten Empfänger aufgenommen werden, dessen Querschnitt so groß ist wie der Querschnitt der Küvetten.DE-OS 29 10 188 photometers are known in which the light rays that the measuring cuvette or comparison cuvette have passed through, can be picked up by a gas-filled receiver whose cross-section is so large is like the cross section of the cuvette.
Auch sind Fotometer bekannt, bei denen die Lichtstrahlen, die die Meß- bzw. Vergleichsküvette durchlaufen haben, von Feststoffempfängern aufgenommen werden, deren bestrahlte Fläche wesentlich kleiner ist als der Querschnitt der Meßbzw. Vergleichsküvette. Solche Feststoffempfänger haben den Nachteil, daß sie, sofern nicht weitere optische Vorrichtungen vorgesehen sind, die die Küvetten verlassenden Strahlungen nur zum Teil aufnehmen. Diese optischen Einrichtungen können u. U. recht aufwendig sein, wenn die Strahler relativ großflächig sind, wie dies bei Strahlern für den infraroten Bereich (thermischer Bereich) im allgemeinen zutrifft. Dazu kommt, daß es u. U. nicht gelingt, mit Hilfe der optischen Mittel die gesamte Energie auf den Empfänger zu konzentrieren. Solche Feststoffempfanger haben jedoch im Vergleich zu den gasgefüllten Empfängern den Vorteil der längeren Stabilität, da sie nicht leer laufen..Photometers are also known in which the light beams that have passed through the measuring or comparison cuvette from Solid recipients are included, their irradiated Area is much smaller than the cross section of the Meßbzw. Comparison cuvette. Such solid receivers have the Disadvantage that, unless further optical devices are provided, they only absorb the radiation leaving the cuvette partially absorb. These optical devices can, under certain circumstances, be quite complex if the radiators have a relatively large area are, as is generally the case with emitters for the infrared range (thermal range). In addition, there may be it is not possible to concentrate all the energy on the receiver with the help of the optical means. Such solid receivers However, compared to gas-filled receivers, they have the advantage of longer stability, as they do not run empty.
Durch die Erfindung wird ein Fotometer zur Gas- oder Flüssigkeitsanalyse, bei dem ein Meß- bzw. Vergleichsstrahl nach Durchlaufen einer Küvette von einem Feststoffempfänger aufgenommen wird, verbessert. Die Erfindung bei einem solchen Fotometer besteht darin, daß die von den Lichtstrahlen beaufschlagte Fläche des unmittelbar hinter der Küvette angebrachten Feststoffempfängers so groß ist wie der Querschnitt der Küvette.The invention provides a photometer for gas or liquid analysis, in which a measuring or comparison beam after Passing through a cuvette recorded by a solid receiver will be improved. The invention in such a photometer is that the acted upon by the light rays The area of the solid receiver attached directly behind the cuvette is as large as the cross-section of the Cuvette.
Der großflächige Feststoffempfänger wird zweckmäßigerweise unmittelbar hinter der Meß- bzw. Vergleichsküvette angeordnet. Dadurch und durch die Anpassung der Dimensionen ergibt sich die Möglichkeit einer günstigen Ankopplung. Als Feststoffempfänger kann eine Folie aus Polyvinylidenfluorid (PVDF) vorgesehen sein, die, sofern sie rund ist, einen Durchmesser in der Größe von 14 bis 25 mm hat. Ähnlich wie bei einem mit gasgefüllten Empfängern ausgestatteten Fotometer entsteht der Vorteil, daß Mittel zur Fokussierung der Strahlen nicht erforderlich sind.The large-area solids receiver is expediently arranged immediately behind the measuring or comparison cuvette. This and the adaptation of the dimensions results in the possibility of a favorable coupling. As a solid receiver For example, a film made of polyvinylidene fluoride (PVDF) can be provided which, if it is round, has a diameter in size from 14 to 25 mm. Similar to a photometer equipped with gas-filled receivers, the Advantage that means for focusing the beams are not required.
Bei dem gemäß der Erfindung ausgebildeten Fotometer, sind die Vorzüge eines Fotometers mit opto-pneumatisehen Detektoren mit den Vorteilen eines mit Feststoffempfängern ausgestatteten Fotometers verbunden.The photometer designed according to the invention has the advantages of a photometer with opto-pneumatic detectors associated with the advantages of a photometer equipped with solid-state receivers.
Gemäß der Erfindung ausgebildete Fotometer werden anhand der Zeichnung näher erläutert.Photometers designed according to the invention are explained in more detail with reference to the drawing.
Figur 1 und Figur 2 lassen Wechsellicht-Fotometer erkennen, bei denen durch die Lichtquelle 1 infrarotes Licht erzeugt wird. Durch den Motor 2 wird ein Blendenrad 3 angetrieben, durch das der Lichtstrahl durch die Vergleichsküvette 4 bzw. die Meßküvette 5 gegenphasig unterbrochen wird. Gemäß der Erfindung ist unmittelbar hinter den Küvetten 4 und 5 einFIG. 1 and FIG. 2 show alternating light photometers in which the light source 1 generates infrared light will. An aperture wheel 3 is driven by the motor 2, through which the light beam passes through the comparison cuvette 4 or the measuring cuvette 5 is interrupted in phase opposition. According to the invention, there is a 4 and 5 immediately behind the cuvettes
Feststoffempfänger 6 angeordnet, der die gesamte Apertur der Meßküvette 5 und der Vergleichsküvette 4 einnimmt. Vorzugsweise besteht dieser Feststoffempfänger 6 aus einer PVDF-Folie, die neben pyroelelctrisehen Eigenschaften auch einen Piezoeffekt aufweist. Bezüglich des thermischen Effektes wird die PVDF-Folie durch Schwärzung optimiert. Die PVDF-Folie hat eine Dicke von 6 bis 10 JU. Anstelle einer Folie aus PVDF kann man eine aus einem ähnlichen Polymer mit pyroelektrisehen Eigenschaften z. B. aus Polyvinylfluorid oder Polyvinylchlorid hergestellte Folie verwenden.Arranged solid receiver 6, which occupies the entire aperture of the measuring cuvette 5 and the comparison cuvette 4. This solid receptor 6 preferably consists of a PVDF film which, in addition to pyroelectronic properties, also has a piezo effect. With regard to the thermal effect, the PVDF film is optimized by blackening. The PVDF film has a thickness of 6 to 10 JU. Instead of a film made of PVDF, one can use one made of a similar polymer with pyroelectric properties such. B. use made of polyvinyl fluoride or polyvinyl chloride film.
Im Vergleich zu herkömmlichen mit Feststoffempfängern ausgestatteten Fotometern ist bei dem erfindungsgemäß ausgebildeten Fotometer die Strahlungsweglänge, die nicht vom Meßgas beströmt wird, sehr kurz. Eine solche längere Weglänge könnte zu einer fehlerhaften Messung führen, wenn die Atmosphäre Meßgas enthält z. B. CO« oder H3O.In comparison with conventional photometers equipped with solid receivers, the length of the radiation path in the photometer designed according to the invention, which is not flowed through by the measuring gas, is very short. Such a longer path length could lead to an incorrect measurement if the atmosphere contains measurement gas, e.g. B. CO "or H 3 O.
Falls das Fotometer Erschütterungen ausgesetzt ist, wird zusätzlich zu der Folie 6 eine zweite Folie 7 angeordnet, die der Folie 6 elektrisch entgegengeschaltet ist (Fig. 2).If the photometer is exposed to vibrations, an additional a second film 7 is arranged in relation to the film 6 and is electrically connected in opposition to the film 6 (FIG. 2).
Claims (3)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3426472A DE3426472A1 (en) | 1984-07-18 | 1984-07-18 | Photometer |
DE8585106886T DE3576566D1 (en) | 1984-07-18 | 1985-06-04 | PHOTOMETER. |
AT85106886T ATE51081T1 (en) | 1984-07-18 | 1985-06-04 | PHOTOMETER. |
EP85106886A EP0168611B1 (en) | 1984-07-18 | 1985-06-04 | Photometer |
US06/753,659 US4714832A (en) | 1984-07-18 | 1985-07-10 | Photometer |
JP15531885A JPS6138448A (en) | 1984-07-18 | 1985-07-16 | Photometer for analyzing gas or liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3426472A DE3426472A1 (en) | 1984-07-18 | 1984-07-18 | Photometer |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3426472A1 true DE3426472A1 (en) | 1986-01-30 |
DE3426472C2 DE3426472C2 (en) | 1987-05-14 |
Family
ID=6240959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3426472A Granted DE3426472A1 (en) | 1984-07-18 | 1984-07-18 | Photometer |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS6138448A (en) |
DE (1) | DE3426472A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3507572A1 (en) * | 1985-03-04 | 1986-09-04 | Hartmann & Braun Ag, 6000 Frankfurt | PHOTOMETER |
DE3509532A1 (en) * | 1985-03-16 | 1986-09-18 | Hartmann & Braun Ag, 6000 Frankfurt | Photometer |
DE3525148A1 (en) * | 1985-07-13 | 1987-04-02 | Hartmann & Braun Ag | GAS ANALYZER WITH LARGE AREA PYROELECTRIC DETECTOR |
DE4413670A1 (en) * | 1993-04-21 | 1995-03-02 | Palocz Andresen Michael Dr Ing | Device for infrared analyses of, in particular, gaseous substances |
DE19526352A1 (en) * | 1995-07-19 | 1997-07-31 | Wimmer Ulrich Dipl Ing Fh | Mechanical beam-modulation method for infrared gas analyser |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2996473B2 (en) * | 1989-11-17 | 1999-12-27 | 新日本製鐵株式会社 | Method for measuring iron content in solvable oil |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB979850A (en) * | 1960-06-03 | 1965-01-06 | Onera (Off Nat Aerospatiale) | Improvements in methods and apparatus for measuring the relative amount of a given component of a mixture of substances by selective absorption of infrared radiation |
DE1598893A1 (en) * | 1966-07-27 | 1971-01-07 | Onera (Off Nat Aerospatiale) | Non-dispersive ultra-red analyzer |
DE2702978A1 (en) * | 1976-01-26 | 1977-08-04 | Fuji Electric Co Ltd | Compensator for pneumatic interferences - is for IR gas analysers and consists of two gas filled chambers |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5132059A (en) * | 1974-09-11 | 1976-03-18 | Toyo Boseki | Chakushokuhaisui no renzokudatsushokuhoho |
JPS5148277A (en) * | 1974-10-23 | 1976-04-24 | Nitto Electric Ind Co | |
JPS5832487B2 (en) * | 1977-03-09 | 1983-07-13 | 清蔵 宮田 | Manufacturing method of polymer electret device |
-
1984
- 1984-07-18 DE DE3426472A patent/DE3426472A1/en active Granted
-
1985
- 1985-07-16 JP JP15531885A patent/JPS6138448A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB979850A (en) * | 1960-06-03 | 1965-01-06 | Onera (Off Nat Aerospatiale) | Improvements in methods and apparatus for measuring the relative amount of a given component of a mixture of substances by selective absorption of infrared radiation |
DE1598893A1 (en) * | 1966-07-27 | 1971-01-07 | Onera (Off Nat Aerospatiale) | Non-dispersive ultra-red analyzer |
DE2702978A1 (en) * | 1976-01-26 | 1977-08-04 | Fuji Electric Co Ltd | Compensator for pneumatic interferences - is for IR gas analysers and consists of two gas filled chambers |
Non-Patent Citations (1)
Title |
---|
Analytical Chemistry, Vol. 52, 1980, S. 1331 A-1344 A * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3507572A1 (en) * | 1985-03-04 | 1986-09-04 | Hartmann & Braun Ag, 6000 Frankfurt | PHOTOMETER |
DE3509532A1 (en) * | 1985-03-16 | 1986-09-18 | Hartmann & Braun Ag, 6000 Frankfurt | Photometer |
DE3525148A1 (en) * | 1985-07-13 | 1987-04-02 | Hartmann & Braun Ag | GAS ANALYZER WITH LARGE AREA PYROELECTRIC DETECTOR |
DE4413670A1 (en) * | 1993-04-21 | 1995-03-02 | Palocz Andresen Michael Dr Ing | Device for infrared analyses of, in particular, gaseous substances |
DE4413670C2 (en) * | 1993-04-21 | 1998-02-12 | Palocz Andresen Michael Dr Ing | Infrared gas analyzer |
DE19526352A1 (en) * | 1995-07-19 | 1997-07-31 | Wimmer Ulrich Dipl Ing Fh | Mechanical beam-modulation method for infrared gas analyser |
DE19526352C2 (en) * | 1995-07-19 | 2000-02-03 | Ulrich Wimmer | Method and device for beam modulation |
Also Published As
Publication number | Publication date |
---|---|
DE3426472C2 (en) | 1987-05-14 |
JPS6138448A (en) | 1986-02-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |