JPS60190838A - Infrared-ray gas analyzer - Google Patents
Infrared-ray gas analyzerInfo
- Publication number
- JPS60190838A JPS60190838A JP4734784A JP4734784A JPS60190838A JP S60190838 A JPS60190838 A JP S60190838A JP 4734784 A JP4734784 A JP 4734784A JP 4734784 A JP4734784 A JP 4734784A JP S60190838 A JPS60190838 A JP S60190838A
- Authority
- JP
- Japan
- Prior art keywords
- detector
- gas
- ethane
- light
- measurement
- 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.)
- Pending
Links
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 abstract description 47
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 18
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 9
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000001273 butane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 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
- G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は赤外線ガス分析計、特に多成分同時測定用の赤
外線ガス分析計に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an infrared gas analyzer, particularly an infrared gas analyzer for simultaneous measurement of multiple components.
〈従来技術〉
この種の分析計として従来のものは、第１図に示すよう
に測定セル（１）（２）を挾んで光源（３）（４）と反
対側に複数の検出器（５）（６）を設けた構成をしてい
る。<Prior art> As shown in Fig. 1, a conventional analyzer of this type has a plurality of detectors (5) on the side opposite to the light sources (3) and (4), sandwiching the measurement cells (1) and (2). )(6).
各検出器（５）（６）は異なったガスを検出するよう調
整されている。そして、検出器（５）と検出器（６）に
は一般にそれぞれの測定成分ガスが封入されている。Each detector (5) (6) is tuned to detect a different gas. The detector (5) and the detector (6) are generally filled with respective measurement component gases.
図中、（７）はガス流路切換器で、測定ガス（〜と比較
ガスＣＢ）とを測定セル（１）（２）に交互に導入する
働きをなす。In the figure, (7) is a gas flow path switching device, which serves to alternately introduce the measurement gas (~ and comparison gas CB) into the measurement cells (1) and (2).
ところで上記構成によれば、検出器（５）が検出器（６
）よシ光源に近い側に設けておるので、検出器（６）は
検出器（５）に封入された測定成分ガスの干渉影響を受
けていた。そこでこのような干渉影響を除くためには別
途ソリッドフィルタ等光学フィルタを設けたり、検出器
の出力を電気的に演算処理したりという煩わしさがある
。By the way, according to the above configuration, the detector (5) is connected to the detector (6).
) Since the detector (6) is located closer to the light source, the detector (6) is affected by interference from the measurement component gas sealed in the detector (5). Therefore, in order to eliminate such interference effects, it is troublesome to separately provide an optical filter such as a solid filter or to electrically process the output of the detector.
以上のような欠点は前述の測定ガスと比較ガスを交互に
導入する方式のガス分析計に限らず、光チヨツパ方式の
ガス分析計においても同様にみられる。The above-mentioned drawbacks are not limited to the above-mentioned gas analyzer that alternately introduces the measurement gas and the comparison gas, but also occur in the optical chopper type gas analyzer.
〈発明の目的〉
本発明はこのような点にあって、全ての検出器を測定セ
ルを挾んで向かい合う検出器のガスフィルタとしても利
用し他の測定成分の干渉影響を軽減するよう巧みに工夫
された赤外線ガス分析計を提供するものである。<Objective of the Invention> In view of the above, the present invention has been cleverly devised to utilize all the detectors as gas filters for the detectors facing each other with the measurement cell in between, thereby reducing the interference effects of other measurement components. The present invention provides an infrared gas analyzer with
〈発明の構成〉
上記目的を達成するため、本発明に係る赤外線ガス分析
計は、測定セルを挾んでその両側に光源を設けると共に
、各光源と測定セルとの間に検出器を設けて構成されて
なることを特徴とする。<Structure of the Invention> In order to achieve the above object, the infrared gas analyzer according to the present invention has a structure in which light sources are provided on both sides of the measurement cell, and a detector is provided between each light source and the measurement cell. It is characterized by being done.
〈実施例〉
第２図は前述の測定ガスと比較ガスを交互に導入する方
式のガス分析計に本発明を適用した例を示し、測定セル
（１）（２）を挾んでその両側に光源（３）（４）（３
Ｘ４）が設けてあり、各光源（３）（４）（３）（４’
）と測定セル（１）（２）の間にたとえばコンデンサマ
イクロホン型の検出器（５Ｘ６）が設けである。検出器
（５）は例えばメタン検出用、検出器（６）は例えばエ
タン検出用のものを用いている。<Example> Figure 2 shows an example in which the present invention is applied to a gas analyzer that alternately introduces a measurement gas and a comparison gas as described above. (3)(4)(3
X4) is provided, and each light source (3) (4) (3) (4'
) and the measuring cells (1) and (2), for example, a condenser microphone type detector (5×6) is provided. The detector (5) is used for detecting methane, and the detector (6) is used for detecting ethane, for example.
この構成によれば、光源（３Ｘ４）から発した光は、検
出器（５）、測定セル（１）（２）を通って検出器（６
）に達するので、検出器（６）の出力からエタンガス濃
度を測定することができるし、一方、光源（３）（４）
から発した光は、検出器（６）、測定セル（１）（２）
を通って検出器（５）に達するので、検出器（５）の出
力からメタンガス濃度を測定することができる。この場
合、検出器（５）の受光室はエタンガス濃度測定に際し
て他成分（メタン）のガスフィルタとして作用し、また
検出器（６）の受光室はメタンガス濃度測定に際して他
成分（エタン）のガスフィルタとして作用する。According to this configuration, the light emitted from the light source (3×4) passes through the detector (5), the measurement cells (1) and (2), and then passes through the detector (6).
), the ethane gas concentration can be measured from the output of the detector (6), while the light sources (3) and (4)
The light emitted from the detector (6), measurement cell (1) (2)
The methane gas concentration can be measured from the output of the detector (5). In this case, the light receiving chamber of the detector (5) acts as a gas filter for other components (methane) when measuring the ethane gas concentration, and the light receiving chamber of the detector (6) acts as a gas filter for other components (ethane) when measuring the methane gas concentration. It acts as.
即ち、各検出器（５）（６）は互いに他の検出器（６）
（５）に対して他成分の干渉影響を軽減するよう作用す
るのである。図中、（ａＩ Ｘａ２）はアンプである。That is, each detector (5) (6) is connected to the other detector (6).
It acts to reduce the interference influence of other components on (5). In the figure, (aI Xa2) is an amplifier.
次に、第８図は光チヨツパ方式のガス分析計に本発明を
適用した例を示す。図中、（１）は先の実施例と同じく
測定セル、（８）は比較セル、（９）はチョッパである
。図示例ではチョッパ（９）を検出器（５）とセル（１
）（８）との間に設けているが、セル（１）（８）と検
出器（６）の間に設けることもできる。セル（１）（８
）、光源＜３）（４）（３）（４）、検出器（５）（６
）の光学的配置構成が第２図に示した実施例と同じであ
るから、この実施例においても、各検出器の受光室が互
いに他の検出器に対してガスフィルタの役割を果す。Next, FIG. 8 shows an example in which the present invention is applied to an optical chopper type gas analyzer. In the figure, (1) is a measurement cell as in the previous embodiment, (8) is a comparison cell, and (9) is a chopper. In the illustrated example, the chopper (9) is connected to the detector (5) and the cell (1).
) (8), but it can also be provided between the cells (1) (8) and the detector (6). Cell (1) (8
), light source <3) (4) (3) (4), detector (5) (6
) is the same as the embodiment shown in FIG. 2, so that in this embodiment as well, the light receiving chambers of each detector serve as gas filters for the other detectors.
第４図は、前記実施例よりも更に多成分の４成分同時測
定用のガス分析計を示し、測定セル（１）（２）と左右
の各光源（３）（４）（３）（４）の間に夫々２個の検
出器（５）（ＩＧ （（＋）α→を設けている。例えば
メタン、エタン、プロパン、フリンの各ガスを同時に測
定しようとする場合、本実症例の構成が使用できる。FIG. 4 shows a gas analyzer for simultaneous measurement of four components, which is more numerous than the previous embodiment, with measurement cells (1) (2) and left and right light sources (3) (4) (3) (4). ), two detectors (5) (IG ((+)α→) are installed between the two detectors (5) (IG ((+)α→). can be used.
この構成によれば、検出器（５）に対しては検出器（６
〉とＱυが、検出器（６）に対しては検出器（５）と０
０が夫夫ガスフィルタとしての役割を果す。一方、検出
器ＱＯＫ対しては検出器（５）（６）α〃が、検出器θ
υに対しては検出器（ｆｉ）（ｆ３）θ０が夫々ガスフ
ィルタとしての役割を果すことになる。According to this configuration, the detector (6) is connected to the detector (5).
> and Qυ for detector (6), detector (5) and 0
0 serves as a hub gas filter. On the other hand, for detector QOK, detectors (5) (6) α〃 and detector θ
For υ, the detectors (fi), (f3), and θ0 each serve as a gas filter.
図示はしないが、測定セルと光源の間に更に多くの検出
器を設けることにより５成分以上の多成分同時測定用の
ガス分析計を構成することができる。Although not shown, by providing more detectors between the measurement cell and the light source, it is possible to configure a gas analyzer for simultaneous measurement of five or more components.
第５図１−ｔ、第２図のガス分析計の変形例で、第２図
のガス分析計において左右の光源を１個ずっ取り除いた
構成に等しい。FIG. 5 1-t is a modification of the gas analyzer shown in FIG. 2, and is equivalent to the configuration in which the left and right light sources are removed from the gas analyzer shown in FIG. 2.
この構成によれば、左側の光源（３）から発した光は検
出器（５）の受光室、測定セル（１）を通って検出器（
６）に入射する１、一方、右側の光源（りから発した光
は検出器（６）の受光室、測定セル（２）を通って検出
器（５）に入射する。従って、各測定セル（１）（２）
に測定ガスと比較ガスを交互に流すことにより、２つの
検出器（５）（６）によって２成分（例えばメタンとエ
タン）を同時に測定することができる。しかも、各検出
器（５）（６）は互いに他方よ多光源（３）又は品に近
いため互いに他成分のガスフィルタとしての役割を果し
ている。図中、＠＠は例えばプロパン、ブタン成分の光
学フィルタである。このようなフィルタ（６）（至）を
検出器（５）（６）と併用することによって、複数成分
の干渉影響を軽減することができる。According to this configuration, the light emitted from the left light source (3) passes through the light receiving chamber of the detector (5), the measurement cell (1), and the detector (5).
On the other hand, the light emitted from the right light source passes through the light receiving chamber of the detector (6) and the measurement cell (2) and enters the detector (5). Therefore, each measurement cell (1) (2)
By alternately flowing the measurement gas and the comparison gas through the two detectors (5) and (6), two components (for example, methane and ethane) can be measured simultaneously. Furthermore, since the detectors (5) and (6) are closer to the multi-light source (3) or the product than the other, they each serve as gas filters for other components. In the figure, @@ is an optical filter containing propane or butane components, for example. By using such filters (6) (to) in combination with detectors (5) and (6), it is possible to reduce the interference effects of multiple components.
〈発明の効果〉
本発明に係る赤外線ガス分析計は以上の如く構成したた
め、全ての検出器が測定セルを挾んで向かい合う検出器
の測定成分の干渉影響除去用ガスフィルタとしての役割
も果すので、別途にソリッドフィルタ等光学フィルタを
用いたり、電気的演算処理をしなくても他の測定成分ガ
スの干渉影響を軽減した状態で多成分ガスの同時測定を
行なうことができるといった効果がある。<Effects of the Invention> Since the infrared gas analyzer according to the present invention is configured as described above, all the detectors also serve as gas filters for removing the interference effects of the measurement components of the detectors facing each other with the measurement cell in between. There is an effect that simultaneous measurement of multi-component gases can be performed while reducing interference effects of other measurement component gases without using a separate optical filter such as a solid filter or without performing electrical calculation processing.
第１図は従来の赤外線ガス分析計を示す構成図、第２図
は本発明の一実施例を示す分析計構成図、第８図乃至第
５図は夫々本発明の他の一実施例を示す分析計構成図で
ある。
（１）（２） ・・・測定セル、（３）（４）（３）（
４） ”・光源、（５）（６）α０（１１）−・・検出
器。
第１ 図
第２ 図
第３図FIG. 1 is a configuration diagram showing a conventional infrared gas analyzer, FIG. 2 is an analyzer configuration diagram showing one embodiment of the present invention, and FIGS. 8 to 5 each show another embodiment of the present invention. FIG. 2 is a configuration diagram of an analyzer shown in FIG. (1)(2)...Measurement cell, (3)(4)(3)(
4) "・Light source, (5) (6) α0 (11) -...Detector. Figure 1 Figure 2 Figure 3
Claims (1)
源と測定セルとの間に検出器を設けて構成されてなる赤
外線ガス分析計。An infrared gas analyzer comprising a measurement cell with light sources on both sides, and a detector between each light source and the measurement cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4734784A JPS60190838A (en) | 1984-03-12 | 1984-03-12 | Infrared-ray gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4734784A JPS60190838A (en) | 1984-03-12 | 1984-03-12 | Infrared-ray gas analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60190838A true JPS60190838A (en) | 1985-09-28 |
Family
ID=12772615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4734784A Pending JPS60190838A (en) | 1984-03-12 | 1984-03-12 | Infrared-ray gas analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60190838A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486699A (en) * | 1992-07-22 | 1996-01-23 | Mannesmann Aktiengesellschaft | Non-dispersive infrared spectrometer |
| US7208187B2 (en) * | 2000-03-20 | 2007-04-24 | Gaebler Ralph | Climate control for the transport and storage of perishables |
-
1984
- 1984-03-12 JP JP4734784A patent/JPS60190838A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486699A (en) * | 1992-07-22 | 1996-01-23 | Mannesmann Aktiengesellschaft | Non-dispersive infrared spectrometer |
| US7208187B2 (en) * | 2000-03-20 | 2007-04-24 | Gaebler Ralph | Climate control for the transport and storage of perishables |
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