JP3221818B2 - Analyzer with easy change of measuring cell length - Google Patents
Analyzer with easy change of measuring cell lengthInfo
- Publication number
- JP3221818B2 JP3221818B2 JP24065295A JP24065295A JP3221818B2 JP 3221818 B2 JP3221818 B2 JP 3221818B2 JP 24065295 A JP24065295 A JP 24065295A JP 24065295 A JP24065295 A JP 24065295A JP 3221818 B2 JP3221818 B2 JP 3221818B2
- Authority
- JP
- Japan
- Prior art keywords
- cell
- space
- hole
- sample
- analyzer
- 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 - Fee Related
Links
- 239000000463 material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 46
- 238000005259 measurement Methods 0.000 description 23
- 230000003287 optical effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、主に光通過型の
ガス又は液体分析計に関し、特に測定対象の種類や濃度
により試料流入空間の長さを簡単に変更することのでき
る試料測定用セルを備えた分析計に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas or liquid analyzer of a light passage type, and more particularly to a sample measuring cell in which the length of a sample inflow space can be easily changed depending on the type and concentration of an object to be measured. To an analyzer equipped with
【０００２】[0002]
【従来の技術】例えば赤外線ガス分析計では、通常、図
５に示すような試料を導入し且つ排出するための試料測
定用セル１１が用いられる。この試料測定用セル１１
は、パイプ状のものを意図する寸法に切断し両端部に光
学窓５、６を取り付け、一方の端部に試料ガス導入口１
１ａを設けると共に他方の端部には試料ガス排出口１１
ｂを設けてある。該試料測定用セル１１の手前側には光
源を、他方向側には干渉フィルタ及び検出器等が配置さ
れる。また、図６に示すように、一方の側に試料導入口
１２ａを設けると共に他方の側に試料排出口１２ｂを設
け且つ端部に光学窓５を取り付けたスペ−スセル１２
に、別個に不活性ガスを封入したダミ−セル１３を嵌め
込むように構成した試料ガス測定用セルも知られてい
る。この場合、該スペ−スセル１２ではダミ−セル１３
の空間長さＺを変更することにより試料セル空間の長さ
をＸ1 よりＸ2 に変更することができるようになってい
るものもある。2. Description of the Related Art For example, an infrared gas analyzer usually uses a sample measuring cell 11 for introducing and discharging a sample as shown in FIG. This sample measuring cell 11
Cuts a pipe-shaped one into the intended dimensions, attaches optical windows 5 and 6 at both ends, and puts a sample gas inlet 1 at one end.
1a and a sample gas outlet 11 at the other end.
b is provided. A light source is arranged on the near side of the sample measuring cell 11, and an interference filter, a detector and the like are arranged on the other side. As shown in FIG. 6, a space cell 12 having a sample inlet 12a on one side, a sample outlet 12b on the other side, and an optical window 5 attached to an end.
There is also known a cell for measuring a sample gas in which a dummy cell 13 separately filled with an inert gas is fitted. In this case, the dummy cell 13 is
Some of which have become a space length of the sample cell space by changing the length Z to be able to change from X 1 to X 2.
【０００３】[0003]
【発明が解決しようとする課題】一般にガス又は液体試
料の分析計では、測定対象の種類、濃度により試料測定
用セル１１（或いはダミ−セル１３）の長さを変更しな
ければならない。即ち、測定対象試料の種類や濃度等に
より感度不足或いは検量線の曲がりが大きくなるのを防
止したり或いは吸収係数未知の測定対象の測定レンジを
見つけるため測定セル長を変更する場合、セル全体を交
換する必要があったが、従来のセル長変更方式は試料測
定用セル全体を交換しなければならずコストアップとな
り、交換作業に時間を費やし且つ煩雑となる等の問題が
あった。Generally, in a gas or liquid sample analyzer, the length of the sample measuring cell 11 (or dummy cell 13) must be changed depending on the type and concentration of the object to be measured. That is, when the sensitivity is insufficient or the curve of the calibration curve is prevented from increasing due to the type or concentration of the sample to be measured, or when the measurement cell length is changed to find the measurement range of the measurement object whose absorption coefficient is unknown, the entire cell is However, the conventional cell length changing method has a problem that the entire cell for sample measurement has to be replaced, which leads to an increase in cost, a time-consuming and complicated replacement work.
【０００４】この発明は上記する課題に着目してなされ
たものであり、試料セル長さを任意に且つ容易に変更す
ることが可能で測定対象ガスの成分や濃度に応じた最適
の試料セル長さとすることが可能であり、また、吸収係
数未知の測定対象でも実験的に容易に最適レンジを求め
ることが可能で製作コストもかからない測定セル長さの
変更が容易な分析計を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to arbitrarily and easily change the length of a sample cell, and to optimize the sample cell length according to the components and concentrations of the gas to be measured. It is also possible to provide an analyzer that can easily determine the optimum range experimentally even for a measurement object whose absorption coefficient is unknown and that can easily change the measurement cell length without manufacturing cost. Aim.
【０００５】[0005]
【課題を解決するための手段】即ち、この発明は上記す
る課題を解決するために、測定セル長さの変更が容易
な分析計が、貫通穿設する穴を有すると共に該穴に流入
する試料ガス流入孔及び該穴の空間を通り流出する試料
流出孔とを側面に設けたセルホルダと、前記セルホルダ
に穿設した穴の両側から嵌め入れる外周回りにそれぞれ
鍔部若しくは凸部を設けた２つのスペ−スセルと、前記
スペ−スセルの外周に嵌め入れる穴を穿設し前記セルホ
ルダと外周回りに設けた鍔部との間に配置するための複
数個のスペ−スセルアダプタと、より成る試料測定用セ
ルを具備し、スペースセルの調整のみで測定セル長さの
変更を行うことを特徴としている。また、前記スペ−
スセルアダプタの側面にシ−ル材を貼り付けてあること
を特徴としている。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an analyzer in which the length of a measuring cell can be easily changed is provided with a through hole and a sample flowing into the hole. A cell holder provided with a gas inlet hole and a sample outlet hole flowing out through the space of the hole on the side surface; and two flanges or convex portions provided around the outer circumference fitted from both sides of the hole formed in the cell holder, respectively. A sample comprising: a space cell; and a plurality of space cell adapters for forming a hole to be fitted around the outer periphery of the space cell and disposing the space holder between the cell holder and a flange provided around the outer periphery. A measurement cell is provided, and the measurement cell length is changed only by adjusting the space cell. In addition, the space
It is characterized in that a seal material is attached to the side surface of the swell adapter.
【０００６】[0006]
【発明の実施の形態】以下、この発明の具体的実施例に
ついて図面を参照して説明する。図１はこの発明の赤外
線ガス分析計の試料ガス測定用セルの構成を示す縦方向
の断面図である。尚、重複を避けるため同一構成要素に
は従来技術で説明した符号と同一の符号を使用する。こ
の試料ガス測定用セルは、貫通する穴２ａを穿設したセ
ルホルダ２と、通常不活性ガスを封入したスペ−スセル
１及び３と、複数個のスペ−スセルアダプタ４と、で構
成される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing the structure of a sample gas measuring cell of the infrared gas analyzer of the present invention. To avoid duplication, the same reference numerals are used for the same components as those described in the related art. This cell for measuring sample gas is composed of a cell holder 2 having a hole 2a formed therethrough, space cells 1 and 3 usually filled with an inert gas, and a plurality of space cell adapters 4. .
【０００７】前記セルホルダ２は、穴２ａの中央部に側
面から試料ガスの流入する試料ガス流入孔２ｃと、試料
ガスが穴２ａの空間２ｂを通り流出する試料ガス排出孔
２ｄとが設けられている。この場合、試料ガス流入孔２
ｃとガス流出孔２ｄは同一中心線上ではなく少しずらせ
て設けても良い。該セルホルダ２に設ける穴２ａの内径
は前記スペ−スセル１及び３の外径が丁度嵌まる程度の
大きさとする。尚、該穴２ａの断面形状は円形でなくて
も良いが、該穴２ａが円形でない場合でも前記スペ−ス
セル１及び３が丁度嵌まるような形状及び大きさとす
る。また、スペ−スセル１と３の外径は必ずしも同一で
ある必要はなく、同様にセルホルダ２の穴２ａについて
も誤差、勾配を有することを妨げるものではない。The cell holder 2 is provided with a sample gas inflow hole 2c into which a sample gas flows from a side surface at the center of the hole 2a and a sample gas discharge hole 2d through which the sample gas flows out through a space 2b of the hole 2a. I have. In this case, the sample gas inlet 2
c and the gas outlet hole 2d may be provided not on the same center line but slightly shifted. The inner diameter of the hole 2a provided in the cell holder 2 is set to such a size that the outer diameter of the space cells 1 and 3 just fits. The cross-sectional shape of the hole 2a does not have to be circular. However, even when the hole 2a is not circular, the cross-sectional shape and the size of the space cells 1 and 3 just fit. Further, the outer diameters of the space cells 1 and 3 do not necessarily have to be the same, and similarly, it does not prevent the holes 2a of the cell holder 2 from having an error and a gradient.
【０００８】次に、前記スペ−スセル１及び３の外周中
央部には、それぞれ鍔部１ａ、３ａが形成してあり、そ
れぞれ両端部には光学窓５、６が設けてある。該スペ−
スセル１及び３は不活性ガスだけでなく測定対象ガスと
同一のガスを所定の濃度で封入することもある。また、
前記セルホルダ２の穴２ａの一方の側（左側）に嵌め入
れるスペ−スセル１の長さＡ1 と他方の側（右側）に嵌
め入れるスペ−スセル３の長さＡ3 とは同一の長さでな
くてもよい。尚、前記鍔部１ａ、３ａは後述するように
試料測定用セルの『セル長さ』を決める場合スペ−スセ
ルアダプタ４をセルホルダ２との間で挟持するためのも
のである。従って、スペ−スセル１、３外周回りにはこ
の鍔部１ａ、３ａに代え周方向数カ所に凸部を設けても
良い。Next, flanges 1a and 3a are formed at the center of the outer periphery of the space cells 1 and 3, respectively, and optical windows 5 and 6 are provided at both ends. The space
The cells 1 and 3 may contain not only the inert gas but also the same gas as the gas to be measured at a predetermined concentration. Also,
Same length as the length A 3 of Suseru 3 - one side space fitted into the (left) of the hole 2a of the cell holder 2 - Suseru first length A 1 and the other side (right side) in the fitted add space It does not have to be. The flanges 1a, 3a are used for holding the space cell adapter 4 between the cell holder 2 and the "cell length" of the sample measuring cell as described later. Therefore, instead of the flanges 1a, 3a around the outer periphery of the space cells 1, 3, convex portions may be provided at several places in the circumferential direction.
【０００９】前記スペ−スセルアダプタ４は前記スペ−
スセル１、３の外周回りに嵌め入れるためのものであ
り、該スペ−スセルアダプタ４はいずれも穴４ａが穿設
してある。該スペ−スセルアダプタ４の厚さｔはいずれ
も同一であっても良いし、各スペ−スセルアダプタ４毎
にその厚さｔは区々としても良い。また、該スペ−スセ
ルアダプタ４は何枚用しても良い。The space cell adapter 4 is provided with the space cell adapter 4.
The space cell adapter 4 is to be fitted around the outer periphery of the space cells 1 and 3. Each of the space cell adapters 4 has a hole 4a. The thickness t of each of the space cell adapters 4 may be the same, or the thickness t of each of the space cell adapters 4 may be varied. Also, any number of the space cell adapters 4 may be used.
【００１０】この発明の赤外線ガス分析計の試料ガスセ
ルは以上のような構成からなるが、次にその測定ガスの
『セル長』を変更する場合について説明する。先ず、
『セル長』を長くする場合。図２は『セル長』を長くす
る場合の試料ガス測定用セルの縦方向組立断面図であ
る。即ち、セルホルダ２に設けた穴２ａの左側からスペ
−スセル１を挿入し、右側からスペ−スセル３を挿入す
る。この場合、スペ−スセル１の外周中央部に設けた鍔
部１ａとセルホルダ２との間にはスペ−スセルアダプタ
４が２個挟持させてあり、同様にスペ−スセル３の外周
中央部に設けた鍔部３ａとセルホルダ２との間にもスペ
−スセルアダプタ４が２個挟持させてある。このように
セルホルダ２の穴２ａの両側にスペ−スセル１及び３を
嵌め入れると一方のスペ−スセル１に設けたセル窓６と
他方のスペ−スセル３に設けたセル窓５との間に形成さ
れる空間２ｂの長さＬ1 が試料ガスセルのセル長さとな
る。そして各スペ−スセル１、３に設けた鍔部１ａ、３
ａとセルホルダ２との間に配置するスペ−スセルアダプ
タ４の数を多くするか厚みの増したアダプタ４を用いれ
ば該セルホルダ２に形成される試料ガスセルの『セル長
さＬ1 』を長くすることができる。The sample gas cell of the infrared gas analyzer of the present invention has the above-described configuration. Next, the case where the "cell length" of the measurement gas is changed will be described. First,
When increasing the "cell length". FIG. 2 is a vertical sectional view of the sample gas measuring cell when the "cell length" is increased. That is, the space cell 1 is inserted from the left side of the hole 2a provided in the cell holder 2, and the space cell 3 is inserted from the right side. In this case, two space cell adapters 4 are sandwiched between the cell holder 2 and the flange portion 1a provided at the center of the outer periphery of the space cell 1. Similarly, at the center of the outer periphery of the space cell 3, Two space cell adapters 4 are also held between the provided flange 3a and the cell holder 2. As described above, when the space cells 1 and 3 are fitted on both sides of the hole 2a of the cell holder 2, between the cell window 6 provided in one space cell 1 and the cell window 5 provided in the other space cell 3, the length L 1 of the space 2b formed is the cell length of the sample gas cell. The flanges 1a, 3a provided on each of the space cells 1, 3
If the number of the space cell adapters 4 arranged between the a and the cell holder 2 is increased or an adapter 4 having an increased thickness is used, the “cell length L 1 ” of the sample gas cell formed in the cell holder 2 becomes longer. can do.
【００１１】次に、『セル長』を短くする場合。図３は
この発明の赤外線ガス分析計で用いる試料ガスセルの
『セル長さ』を短くする場合の分解状態の縦方向断面図
である。即ち、図２に示す『セル長さ』を長くした状態
の試料ガスセルを分解し、セルホルダ２とスペ−スセル
１の鍔部１ａとの間に配置してあるスペ−スセルアダプ
タ４を１個取り、該スペ−スセル１の鍔部１ａの反対側
に嵌め入れ、また、セルホルダ２とスペ−スセル３の鍔
部３ａとの間に配置してあるスペ−スセルアダプタ４も
１個取り、該スペ−スセル３の鍔部３ａの反対側に嵌め
入れる。そして、図４に示すように、セルホルダ２に設
けた穴２ａの左側からスペ−スセル１を挿入し、右側か
らスペ−スセル３を挿入する。この場合、スペ−スセル
１の外周中央部に設けた鍔部１ａとセルホルダ２との間
にはスペ−スセルアダプタ４が１個挟持させてあり、同
様にスペ−スセル３の外周中央部に設けた鍔部３ａとセ
ルホルダ２との間にもスペ−スセルアダプタ４が１個挟
持させてある。このように、各スペ−スセル１、３に設
けた鍔部１ａ、３ａとセルホルダ２との間に配置するス
ペ−スセルアダプタ４の数を少なくするかアダプタ４の
厚みを減らせば該セルホルダ２に形成される試料ガスセ
ルの『セル長さＬ2 』を短くすることができる。勿論、
『セル長さ』を短くする場合、スペ−スセルアダプタ４
を使用せず、セルホルダ２の両側側面に直接スペ−スセ
ル１及び３の各鍔部１ａ、３ａを当接させても良い。Next, a case where the "cell length" is shortened. FIG. 3 is a longitudinal sectional view of the disassembled state when the "cell length" of the sample gas cell used in the infrared gas analyzer of the present invention is shortened. That is, the sample gas cell in the state where the "cell length" shown in FIG. 2 is elongated is disassembled, and one space cell adapter 4 arranged between the cell holder 2 and the flange 1a of the space cell 1 is provided. And a space cell adapter 4 disposed between the cell holder 2 and the flange 3a of the space cell 3, and one space cell adapter 4 is also taken. The space cell 3 is fitted on the opposite side of the flange 3a. Then, as shown in FIG. 4, the space cell 1 is inserted from the left side of the hole 2a provided in the cell holder 2, and the space cell 3 is inserted from the right side. In this case, one space cell adapter 4 is sandwiched between the cell holder 2 and the flange 1a provided at the center of the outer periphery of the space cell 1. Similarly, the space cell adapter 4 is held at the center of the outer periphery of the space cell 3. One space cell adapter 4 is also held between the provided flange 3a and the cell holder 2. As described above, if the number of the space cell adapters 4 arranged between the flanges 1a, 3a provided on each of the space cells 1, 3 and the cell holder 2 is reduced or the thickness of the adapter 4 is reduced, the cell holder 2 can be formed. it is possible to shorten the "cell length L 2" of the sample gas cell that is formed. Of course,
When shortening the “cell length”, use a space cell adapter 4
The flanges 1a, 3a of the space cells 1 and 3 may be directly abutted on both side surfaces of the cell holder 2 without using.
【００１２】尚、前記スペ−スセルアダプタ４の両側面
及び各スペ−スセル１及び３の内側側面にはゴム等のシ
−ル材を貼り付けて設けても良いし、セルホルダ２の側
面とスペ−スセルアダプタ４の間或いはセルホルダ２の
側面と鍔部１ａ、３ａとの間にはＯリング等のシ−ル材
を配置するようにしても良い。Incidentally, a sealing material such as rubber may be attached to both side surfaces of the space cell adapter 4 and inner side surfaces of the space cells 1 and 3, or the side surfaces of the cell holder 2 may be provided. A seal material such as an O-ring may be arranged between the space cell adapters 4 or between the side surfaces of the cell holder 2 and the flanges 1a, 3a.
【００１３】上記するように、この発明の分析計は、貫
通穿設する穴を有すると共に該穴に流入する試料流入孔
及び該穴の空間を通り流出する試料流出孔とを側面に設
けたセルホルダと、前記セルホルダに穿設した穴の両側
から嵌め入れる外周回りに鍔部を設けた２つのスペ−ス
セルと、前記スペ−スセルの外周に嵌め入れる穴を穿設
し前記セルホルダと外周回りに設けた鍔部との間に配置
するための複数個のスペ−スセルアダプタと、で構成さ
れる試料測定用セルを備えるものである。試料測定用セ
ルをこのような構成とすると、試料測定用セルの試料ガ
ス空間の長さを簡単に且つ任意の長さに変更することが
できる。このような構成の試料測定用セルは光断続式或
いは流体変調方式のいずれの分析計でも使用することが
できる。尚、この発明の分析計には赤外線ガス分析計の
みならず測定対象が液体の場合も含まれ、また測定原理
についても赤外線、可視光、紫外線、マイクロ波等の電
磁波についての一定空間における吸収又は発光を利用し
た各種の分析法にも適用が可能である。[0013] As described above, the analyzer of the present invention has a cell holder having a through hole and a sample inflow hole flowing into the hole and a sample outflow hole flowing out through the space of the hole on the side surface. And two space cells provided with a flange around the outer periphery for fitting from both sides of the hole formed in the cell holder, and a hole fitted on the outer periphery of the space cell and provided around the outer periphery of the cell holder. And a plurality of space cell adapters to be disposed between the sample and the flange portion. When the sample measuring cell has such a configuration, the length of the sample gas space of the sample measuring cell can be easily and arbitrarily changed. The sample measuring cell having such a configuration can be used in any of an intermittent or fluid modulation type analyzer. Note that the analyzer of the present invention includes not only an infrared gas analyzer but also a case where a measurement target is a liquid, and also has a measurement principle of absorbing, absorbing or absorbing electromagnetic waves such as infrared rays, visible light, ultraviolet rays, and microwaves in a certain space. The present invention is also applicable to various analytical methods using luminescence.
【００１４】[0014]
【発明の効果】以上詳述したように，この発明の分析計
によれば、試料測定用セルのセル空間を任意に且つ容易
に変更可能な構造とすることが出来る。試料ガス測定用
セルをこのような構造することにより測定成分或いは測
定濃度に応じた最適な光学系の分析計とすることができ
る。また、吸収係数が未知の試料測定においても実験的
に最適値を容易に且つ簡単に求めることが可能となりそ
のためのコスト低減や大幅な短縮時間を図ることができ
る。通常、赤外線等を利用した分析に際しては分析計を
改造しレンジ変更を行うことが多々あるがそのようなレ
ンジ変更に伴うセル長さの変更も部品（セル等）は必要
なくスペ−スセルアダプタの調整のみで対応可能とな
る。As described above in detail, according to the analyzer of the present invention, a structure in which the cell space of the sample measuring cell can be arbitrarily and easily changed can be obtained. With such a structure of the sample gas measuring cell, it is possible to provide an analyzer with an optimal optical system according to the measurement component or the measurement concentration. In addition, even in the measurement of a sample whose absorption coefficient is unknown, it is possible to easily and easily obtain the optimum value experimentally, thereby making it possible to reduce the cost and greatly shorten the time. Usually, in the analysis using infrared rays or the like, there are many cases where the analyzer is modified and the range is changed. However, such a change in the cell length accompanying the range change does not require any components (cells and the like) and a space cell adapter. It is possible to cope only by adjusting.
【図１】この発明の測定セル長さの変更が容易な分析計
を赤外線ガス分析計に適用した実施例であって試料ガス
セルの構成を示す軸方向の断面図である。FIG. 1 is an axial sectional view showing a configuration of a sample gas cell in which an analyzer of the present invention in which the length of a measurement cell is easily changed is applied to an infrared gas analyzer.
【図２】この発明の測定セル長さの変更が容易な分析計
を赤外線ガス分析計に適用した実施例であって、試料ガ
スセルの『セル長』を長くする場合の試料ガス測定用セ
ルの縦方向組立断面図である。FIG. 2 is an embodiment in which the analyzer of the present invention in which the measurement cell length can be easily changed is applied to an infrared gas analyzer, and the sample gas measurement cell when the “cell length” of the sample gas cell is increased. It is a longitudinal assembly sectional view.
【図３】この発明の測定セル長さの変更が容易な分析計
を赤外線ガス分析計に適用した実施例であって、試料ガ
スセルの『セル長さ』を短くする場合の分解状態の縦方
向断面図である。FIG. 3 is an embodiment in which the analyzer of the present invention in which the measurement cell length can be easily changed is applied to an infrared gas analyzer, and the longitudinal direction of the disassembled state when the “cell length” of the sample gas cell is shortened. It is sectional drawing.
【図４】この発明の測定セル長さの変更が容易な分析計
を赤外線ガス分析計に適用した実施例であって、試料ガ
スセルの『セル長』を短くする場合の試料ガス測定用セ
ルの縦方向組立断面図である。FIG. 4 shows an embodiment in which the analyzer of the present invention in which the measurement cell length can be easily changed is applied to an infrared gas analyzer, and the sample gas measurement cell in the case where the “cell length” of the sample gas cell is shortened. It is a longitudinal assembly sectional view.
【図５】従来の赤外線ガス分析計用の測定セルの断面図
である。FIG. 5 is a cross-sectional view of a measurement cell for a conventional infrared gas analyzer.
【図６】従来の試料セル空間の長さが変更可能な測定セ
ルの断面図である。FIG. 6 is a cross-sectional view of a conventional measurement cell in which the length of a sample cell space can be changed.
１、３ スペ−スセル １ａ、３ａ 鍔部 ２ セルホルダ ２ａ 穴 ２ｂ 試料ガス測定用空間 ２ｃ 試料ガス流入孔 ２ｄ 試料ガス流出孔 ４ スペ−スセルアダプタ 1, 3 space cell 1a, 3a flange 2 cell holder 2a hole 2b sample gas measurement space 2c sample gas inflow hole 2d sample gas outflow hole 4 space cell adapter
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−1556（ＪＰ，Ａ) 特開 平４−301743（ＪＰ，Ａ) 特開 昭61−184443（ＪＰ，Ａ) 実開 昭57−31650（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 21/00 - 21/74 ＪＩＣＳＴファイル（ＪＯＩＳ)──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-1556 (JP, A) JP-A-4-301743 (JP, A) JP-A-61-184443 (JP, A) 31650 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) G01N 21/00-21/74 JICST file (JOIS)
Claims (2)
入する試料ガス流入孔及び該穴の空間を通り流出する試
料流出孔とを側面に設けたセルホルダと、前記セルホル
ダに穿設した穴の両側から嵌め入れる外周回りにそれぞ
れ鍔部若しくは凸部を設けた２つのスペ−スセルと、前
記スペ−スセルの外周に嵌め入れる穴を穿設し前記セル
ホルダと外周回りに設けた鍔部との間に配置するための
複数個のスペ−スセルアダプタと、より成る試料測定用
セルを具備し、スペースセルの調整のみで測定セル長さ
の変更を行うことを特徴とする測定セル長さの変更が容
易な分析計。1. A cell holder having a through hole and a sample gas inflow hole flowing into the hole and a sample outflow hole flowing out through the space of the hole provided on a side surface, and a hole formed in the cell holder. Two space cells each provided with a flange or a projection around the outer periphery to be fitted from both sides of the cell holder, and a hole provided in the outer periphery of the space cell to form a hole to be fitted into the cell holder and a flange provided around the outer periphery. A plurality of space cell adapters for interposition, and a sample measuring cell comprising the same, wherein the measuring cell length is changed only by adjusting the space cell. Analyzer that can be easily changed.
を貼り付けてあることを特徴とする請求項１に記載の測
定セル長さの変更が容易な分析計。2. The analyzer according to claim 1, wherein a seal material is attached to a side surface of the space cell adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24065295A JP3221818B2 (en) | 1995-08-24 | 1995-08-24 | Analyzer with easy change of measuring cell length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24065295A JP3221818B2 (en) | 1995-08-24 | 1995-08-24 | Analyzer with easy change of measuring cell length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0961342A JPH0961342A (en) | 1997-03-07 |
| JP3221818B2 true JP3221818B2 (en) | 2001-10-22 |
Family
ID=17062684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24065295A Expired - Fee Related JP3221818B2 (en) | 1995-08-24 | 1995-08-24 | Analyzer with easy change of measuring cell length |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3221818B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3701955B2 (en) * | 2003-09-29 | 2005-10-05 | アンリツ株式会社 | Gas cell, gas cell manufacturing jig, gas cell manufacturing method, and semiconductor laser module |
| GB2419408A (en) * | 2004-10-20 | 2006-04-26 | Thomas Yen-Shin Shen | Adaptable cuvette holder |
-
1995
- 1995-08-24 JP JP24065295A patent/JP3221818B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0961342A (en) | 1997-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3920334A (en) | Dual purpose detector for a liquid chromatograph | |
| US5917606A (en) | Photometric flow apparatus for small sample volumes and method of making same | |
| US6734961B2 (en) | Flow cells utilizing photometric techniques | |
| US4088407A (en) | High pressure fluorescence flow-through cuvette | |
| US7808619B2 (en) | System for assembling a fluid analysis apparatus | |
| US4989974A (en) | Micro-flow cell | |
| JPS60105946A (en) | Infrared gas analyzer | |
| FI107194B (en) | Analysis of gas mixtures by infrared method | |
| EP1229322B1 (en) | Cell for analyzing fluid and analyzing apparatus using the same | |
| JP5805739B2 (en) | Flow cell | |
| US4374620A (en) | Photometric flow cell | |
| EP0798551B1 (en) | Optical absorbance meter | |
| Brewster et al. | Fiber optic thin-layer spectroelectrochemistry with long optical path | |
| US7005090B2 (en) | Method for manufacturing a flow cell | |
| JP3221818B2 (en) | Analyzer with easy change of measuring cell length | |
| EP2778675A1 (en) | Chromatography system, signal processing apparatus, chromatography data processing apparatus, and program | |
| GB2071355A (en) | Liquid cell for spectroscopic analysis | |
| US6255653B1 (en) | Diffusion-type NDIR gas analyzer with improved response time due to convection flow | |
| JP3414079B2 (en) | Liquid chromatograph | |
| Fosdick et al. | Spectroelectrochemical response and flow hydrodynamics in thin-layer flow detectors with long optical path lengths and fiber-optic or slab waveguide coupling | |
| Snow et al. | A low-cost, high-sensitivity 3D printed fluorescence detector | |
| US12474256B2 (en) | Apparatus for the measurement of light transmittance through a liquid sample using multiple LED light sources | |
| KR200490024Y1 (en) | Cell measuring ozone gas | |
| JPH0628684Y2 (en) | UV Fluorescence Analyzer | |
| KR200238966Y1 (en) | Gas analysis machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100817 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100817 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100817 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |