JPH028209Y2 - - Google Patents
Info
- Publication number
- JPH028209Y2 JPH028209Y2 JP18153184U JP18153184U JPH028209Y2 JP H028209 Y2 JPH028209 Y2 JP H028209Y2 JP 18153184 U JP18153184 U JP 18153184U JP 18153184 U JP18153184 U JP 18153184U JP H028209 Y2 JPH028209 Y2 JP H028209Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- magnetic
- oxygen
- measurement
- measurement gas
- 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
- 239000007789 gas Substances 0.000 claims description 67
- 238000005259 measurement Methods 0.000 claims description 40
- 239000001301 oxygen Substances 0.000 claims description 34
- 229910052760 oxygen Inorganic materials 0.000 claims description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 33
- 239000012528 membrane Substances 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 229920003216 poly(methylphenylsiloxane) Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
Landscapes
- 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)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、エンジンや各種産業用ボイラーから
の排ガスなどの酸素濃度を検出する酸素分析装
置、詳しくは、並置された２つの電磁石の電磁コ
イルを交互に通電して、２組の磁極片間にそれぞ
れ交互に磁界を発生させ、かつ、これら２組の磁
極片間に磁化率の異なる測定ガスと比較ガスとを
流し、磁化率の差によつて発生する界面圧力にも
とづいて測定ガスの酸素濃度を検出するように構
成した磁気式酸素分析装置に関する。[Detailed description of the invention] [Field of industrial application] The present invention is an oxygen analyzer that detects the oxygen concentration of exhaust gas from engines and various industrial boilers, and more specifically, an electromagnetic coil of two electromagnets arranged in parallel. is alternately energized to generate a magnetic field alternately between the two sets of magnetic pole pieces, and a measurement gas and a reference gas with different magnetic susceptibilities are flowed between these two sets of magnetic pole pieces, and the difference in magnetic susceptibility is The present invention relates to a magnetic oxygen analyzer configured to detect the oxygen concentration of a measurement gas based on the interfacial pressure generated.
この種の酸素分析装置としては、従来、第２図
に示すようなものがある。この図において、ａは
吸引ポンプ１によつて測定ガスを採取する測定ガ
スラインで、この測定ガスラインａ中には、ニー
ドル弁２と調圧弁３とが介装されるとともに、そ
れぞれキヤピラリ５，５′を有する２本の分岐測
定ガスラインｂ，ｃに分岐されて、それぞれ測定
室６，６′に連通されている。７，７′と８，８′
とは各測定室６，６′内に微小間隔を隔てて対設
された２組の磁極片である。図示しないが、各組
の対向する磁極片７，７′と８，８′は継鉄によつ
て磁気的閉ループを構成するようにされており、
各組の継鉄に巻かれた電磁コイルを交互に通電す
ることにより、磁極片７，７′間と８，８′間とに
それぞれ交互に強い磁界を発生させるように構成
されている。９はコンデンサマイクロホン検出器
で、コンデンサ膜１０によつて仕切られた両室
Ａ，Ｂは、それぞれ圧力導入路１１，１１′によ
つて前記測定室６，６′に連通され、かつ、固定
極１２には前置増幅器１３、増幅器１４、メータ
１５などが接続されている。ｇは調圧器１８を有
する比較ガスラインで、この比較ガスラインｇは
それぞれキヤピラリ１７，１７′を有する２本の
分岐比較ガスラインｅ，ｆを介して前記両室Ａ，
Ｂに連通され、N2などの不活性ガスや大気など
の比較ガスが、両室Ａ，Ｂと圧力導入路１１，１
１′を通つて測定室６，６′に供給されるように構
成されている（例えば、実公昭59−2522号公報）。
A conventional oxygen analyzer of this type is shown in FIG. In this figure, reference numeral a denotes a measurement gas line through which measurement gas is sampled by a suction pump 1, and a needle valve 2 and a pressure regulating valve 3 are interposed in this measurement gas line a, as well as capillaries 5 and 3, respectively. The measuring gas lines b and c are branched into two branch measuring gas lines b and c having a diameter of 5' and communicated with measuring chambers 6 and 6', respectively. 7,7' and 8,8'
are two sets of magnetic pole pieces arranged opposite each other with a minute interval in each measurement chamber 6, 6'. Although not shown, each set of opposing magnetic pole pieces 7, 7' and 8, 8' is configured to form a magnetic closed loop by a yoke.
By alternately energizing the electromagnetic coils wound around each set of yokes, strong magnetic fields are alternately generated between the magnetic pole pieces 7 and 7' and between the pole pieces 8 and 8'. Reference numeral 9 designates a capacitor microphone detector, in which both chambers A and B separated by a capacitor membrane 10 are communicated with the measurement chambers 6 and 6' through pressure introduction passages 11 and 11', respectively, and a fixed pole A preamplifier 13, an amplifier 14, a meter 15, etc. are connected to 12. g is a comparison gas line having a pressure regulator 18, and this comparison gas line g is connected to the two chambers A, F through two branched comparison gas lines e and f having capillaries 17 and 17', respectively.
B, and a comparison gas such as an inert gas such as N 2 or the atmosphere is connected to both chambers A and B and pressure introduction passages 11 and 1.
1' to the measurement chambers 6, 6' (for example, Japanese Utility Model Publication No. 59-2522).
この従来装置によれば、測定ガスラインａと分
岐測定ガスｂ，ｃとを介して測定ガスを、また、
比較ガスラインｇと分岐比較ガスラインｅ，ｆと
を介して比較ガスを、それぞれ測定室６，６′に
供給することにより、磁極片７，７′間と８，
８′間とに測定ガスと比較ガスの磁化率の差に比
例した界面圧力を交互に発生させ、それをコンデ
ンサマイクロホン検出器９などを介してメータ１
５に表示させて、測定ガスの酸素濃度を検出する
ことができる。しかしながら、この従来の装置で
は、測定ガスとは別に、N2などの比較ガスを用
意しなければならない欠点があつた。その上、大
気中の酸素濃度が一定であることを利用して、大
気を比較ガスとして使用することもあるが、その
場合には、測定ガスの酸素濃度がゼロの場合にも
検出信号が発生し、絶対的なゼロ信号にならずに
ドリフトが生ずる欠点があつた。 According to this conventional device, the measurement gas is supplied via the measurement gas line a and the branched measurement gases b and c.
By supplying a comparison gas to the measurement chambers 6, 6' through the comparison gas line g and the branched comparison gas lines e, f, respectively, between the magnetic pole pieces 7, 7' and 8,
An interfacial pressure proportional to the difference in magnetic susceptibility between the measurement gas and the comparison gas is generated alternately between
5, the oxygen concentration of the measurement gas can be detected. However, this conventional device has the disadvantage that a comparison gas such as N 2 must be prepared separately from the measurement gas. Furthermore, taking advantage of the fact that the oxygen concentration in the atmosphere is constant, the atmosphere is sometimes used as a comparison gas, but in that case, a detection signal is generated even when the oxygen concentration of the measurement gas is zero. However, there was a drawback that the signal did not become absolute zero and a drift occurred.
本考案は、このような従来欠点にかんがみ、特
別な比較ガスを用意する必要がなく、しかも、測
定ガスの酸素濃度がゼロの場合には、確実に絶対
的なゼロ信号を得ることのできる磁気式酸素分析
装置を提供しようとするものである。
In view of these conventional drawbacks, the present invention has developed a magnetic system that eliminates the need to prepare a special comparison gas and that can reliably obtain an absolute zero signal when the oxygen concentration of the measurement gas is zero. The present invention aims to provide a type oxygen analyzer.
この目的を達成するため、本考案による磁気式
酸素分析装置は、測定ガスを供給する測定ガスラ
インから分岐した分岐ラインを設けるとともに、
この分岐ライン中に酸素選択性透過膜を設け、こ
の酸素選択性透過膜を通過したガスを比較ガスと
して使用するようにしてあることを特徴とする。
In order to achieve this purpose, the magnetic oxygen analyzer according to the present invention is provided with a branch line branching from the measurement gas line that supplies the measurement gas, and
The present invention is characterized in that an oxygen-selective permeable membrane is provided in this branch line, and the gas that has passed through this oxygen-selective permeable membrane is used as a comparison gas.
このように、測定ガスをして酸素選択性透過膜
を通過させることにより、酸素以外のガスを除去
することができ、したがつて、この測定ガスをそ
のまま比較ガスとして使用することができる。そ
の上、測定ガス中に酸素が存在しない場合には、
比較ガスの方も酸素濃度がゼロとなり、絶対的な
ゼロ信号を得ることができる。
In this way, by passing the measurement gas through the oxygen-selective permeable membrane, gases other than oxygen can be removed, and therefore, the measurement gas can be used as is as a comparison gas. Moreover, in the absence of oxygen in the measurement gas,
The oxygen concentration of the comparison gas also becomes zero, and an absolute zero signal can be obtained.
本考案の実施例を第１図にもとづいて説明する
と、ａは吸引ポンプ１によつて測定ガスを採取す
る測定ガスラインで、この測定ガスラインａ中に
は、従来と同様に、ニードル弁２と調圧弁３とが
介装され、かつ、バツフア４を介してそれぞれキ
ヤピラリ５，５′を有する２本の分岐測定ガスラ
インｂ，ｃに分岐されて、それぞれ測定室６，
６′に連通されている。７，７′と８，８′は各測
定室６，６′内に微小間隔を隔てて対設された２
組の磁極片で、図示しないが、従来と同様に、各
組の対向する磁極片７，７′と８，８′とが継鉄に
よつて磁気的閉ループを構成するようにされてい
て、各組の継鉄に巻かれた電磁コイルを交互に通
電することにより、磁極片７，７′間と８，８′間
とにそれぞれ交互に強い磁界を発生させるように
構成されている。９はコンデンサマイクロホン検
出器で、これも従来と同様に、コンデンサ膜１０
によつて仕切られた両室Ａ，Ｂは、それぞれ圧力
導入路１１，１１′によつて測定室６，６′に連通
され、かつ、固定極１２には前置増幅器１３、増
幅器１４、メータ１５などが接続されている。そ
して、前記測定ガスラインａ中、調圧器３とバツ
フア４との間から分岐ラインｄが分岐されるとと
もに、この分岐ラインｄ中に酸素の通過は許す
が、他のガスの通過を許さない酸素選択性透過膜
１６を設け、かつ、この分岐ラインｄをそれぞれ
キヤピラリ１７，１７′を有する２本の分岐比較
ガスラインｅ，ｆを介して前記両室Ａ，Ｂに連通
し、前記酸素選択性透過膜１６を通過して酸素リ
ツチとなつたガスが、両室Ａ，Ｂと圧力導入路１
１，１１′を通つて測定室６，６′に流入されるよ
うに構成されている。なお、この酸素選択性透過
膜１６としては、シリコンゴム系のPMPS膜な
ど、各種の酸素富化膜が使用される。
An embodiment of the present invention will be described based on FIG. and a pressure regulating valve 3 are interposed therein, and are branched via a buffer 4 into two branch measurement gas lines b and c having capillaries 5 and 5', respectively, and are connected to measurement chambers 6 and 3, respectively.
6'. 7, 7' and 8, 8' are two units installed opposite each other with a minute interval in each measurement chamber 6, 6'.
Although not shown in the drawings, the opposing magnetic pole pieces 7, 7' and 8, 8' of each set are configured to form a magnetic closed loop by means of a yoke, as in the prior art. By alternately energizing the electromagnetic coils wound around each set of yokes, strong magnetic fields are alternately generated between the magnetic pole pieces 7 and 7' and between the pole pieces 8 and 8'. 9 is a capacitor microphone detector, which also has a capacitor film 10 as in the conventional case.
Both chambers A and B, which are partitioned by 15 etc. are connected. A branch line d is branched from between the pressure regulator 3 and the buffer 4 in the measurement gas line a, and oxygen is allowed to pass through this branch line d, but other gases are not allowed to pass through the branch line d. A selectively permeable membrane 16 is provided, and this branch line d is communicated with the two chambers A and B via two branch comparison gas lines e and f having capillaries 17 and 17', respectively, so that the oxygen selectivity The oxygen-rich gas that has passed through the permeable membrane 16 flows into both chambers A and B and the pressure introduction path 1.
1 and 11' to flow into the measurement chambers 6 and 6'. Note that various oxygen-enriching membranes such as a silicone rubber-based PMPS membrane are used as the oxygen-selective permeable membrane 16.
このような構成であるから、従来と同様に、測
定ガスラインａと分岐測定ガスラインｂ，ｃとを
介して測定ガスを、また、分岐比較ガスライン
ｅ，ｆを介して比較ガスを、それぞれ供給するこ
とにより、メータ１５によつて測定ガスの酸素濃
度を読み取ることができる。そして、分岐ライン
ｄによつて取出した測定ガスの一部をして酸素選
択性透過膜１６を通過させて酸素リツチなガスに
するにより、測定ガスの一部をそのまま比較ガス
として使用することができる。そのため、測定ガ
ス中に酸素が存在しない場合には、比較ガスの方
も酸素濃度がゼロとなり、その結果、絶対的なゼ
ロ信号を得ることができる。 With this configuration, as in the conventional case, the measurement gas is transmitted through the measurement gas line a and the branched measurement gas lines b and c, and the comparison gas is transmitted through the branched comparison gas lines e and f, respectively. By supplying the gas, the oxygen concentration of the measurement gas can be read by the meter 15. By passing a portion of the measurement gas taken out through the branch line d through the oxygen-selective permeable membrane 16 to make it an oxygen-rich gas, it is possible to use a portion of the measurement gas as it is as a comparison gas. can. Therefore, when oxygen is not present in the measurement gas, the oxygen concentration of the comparison gas also becomes zero, and as a result, an absolute zero signal can be obtained.
以上の説明から明らかなように、測定ガスの一
部をそのまま比較ガスとして使用することができ
るので、従来のように特別に比較ガスを用意する
必要が全くなく、しかも、測定ガス中に酸素が存
在しない場合には、絶対的なゼロ信号を得ること
ができ、従来のようなドリフトの発生を確実に防
止できるのである。
As is clear from the above explanation, a part of the measurement gas can be used as is as a comparison gas, so there is no need to prepare a special comparison gas as in the past. If it does not exist, an absolute zero signal can be obtained, and the occurrence of drift as in the conventional method can be reliably prevented.
第１図は、本考案にかかる磁気式酸素分析装置
の実施例を示す構成図、第２図は、従来の磁気式
酸素分析装置を示す構成図である。
ａ……測定ガスライン、ｄ……分岐ライン、
７，７′，８，８′……磁極片、１６……酸素選択
性透過膜。
FIG. 1 is a block diagram showing an embodiment of a magnetic oxygen analyzer according to the present invention, and FIG. 2 is a block diagram showing a conventional magnetic oxygen analyzer. a...Measurement gas line, d...Branch line,
7, 7', 8, 8'...Magnetic pole piece, 16...Oxygen selective permeable membrane.
Claims (1)
通電して、２組の磁極片間にそれぞれ交互に磁界
を発生させ、かつ、これら２組の磁極片間に磁化
率の異なる測定ガスと比較ガスとを流し、磁化率
の差によつて発生する界面圧力にもとづいて測定
ガスの酸素濃度を検出するように構成した磁気式
酸素分析装置において、前記測定ガスを供給する
測定ガスラインから分岐した分岐ラインを設ける
とともに、この分岐ライン中に酸素選択性透過膜
を設け、この酸素選択性透過膜を通過したガスを
比較ガスとして使用するようにしてある磁気式酸
素分析装置。 Electromagnetic coils of two juxtaposed electromagnets are alternately energized to alternately generate magnetic fields between the two sets of magnetic pole pieces, and a measurement gas and a comparison gas having different magnetic susceptibilities are placed between the two sets of magnetic pole pieces. In a magnetic oxygen analyzer configured to detect the oxygen concentration of the measurement gas based on the interfacial pressure generated by the difference in magnetic susceptibility, a branch branched from the measurement gas line that supplies the measurement gas. A magnetic oxygen analyzer is provided with a line, an oxygen selective permeable membrane is provided in this branch line, and the gas that has passed through the oxygen selective permeable membrane is used as a comparison gas.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18153184U JPH028209Y2 (en) | 1984-11-28 | 1984-11-28 | |
| DE19853541341 DE3541341A1 (en) | 1984-11-28 | 1985-11-22 | Magnetic oxygen analyser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18153184U JPH028209Y2 (en) | 1984-11-28 | 1984-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6194759U JPS6194759U (en) | 1986-06-18 |
| JPH028209Y2 true JPH028209Y2 (en) | 1990-02-27 |
Family
ID=16102396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18153184U Expired JPH028209Y2 (en) | 1984-11-28 | 1984-11-28 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH028209Y2 (en) |
| DE (1) | DE3541341A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006277974A (en) * | 2005-03-28 | 2006-10-12 | Sanyo Electric Co Ltd | Battery |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1840563B1 (en) * | 2006-03-29 | 2012-07-25 | General Electric Company | Measuring gas components together with a paramagnetic gas |
-
1984
- 1984-11-28 JP JP18153184U patent/JPH028209Y2/ja not_active Expired
-
1985
- 1985-11-22 DE DE19853541341 patent/DE3541341A1/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006277974A (en) * | 2005-03-28 | 2006-10-12 | Sanyo Electric Co Ltd | Battery |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3541341A1 (en) | 1986-06-05 |
| JPS6194759U (en) | 1986-06-18 |
| DE3541341C2 (en) | 1989-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU3647795A (en) | A method and instrument for measuring differential oxygen concentration between two flowing gas streams | |
| US4533447A (en) | Apparatus for and method of isoelectric focussing | |
| US4667157A (en) | Linear Hall effect oxygen sensor with auxiliary coil magnetic field balancing | |
| US4563894A (en) | Paramagnetic oxygen sensor | |
| JPH028209Y2 (en) | ||
| US3049665A (en) | Measuring instrument and method | |
| US4585552A (en) | System for the measurement of the difference between two fluid flows in separate ducts | |
| FI73085C (en) | EN FOER MAETNING AV SYREHALTEN I GASBLANDNINGAR AVSEDD MAETNINGSANORDNING. | |
| US4808921A (en) | Paramagnetic gas analyzer using DC and AC magnetic fields | |
| EP1840563A1 (en) | Measuring gas components together with a paramagnetic gas | |
| JPH0222342B2 (en) | ||
| JP2552937Y2 (en) | Magnetic oxygen analyzer | |
| CN109781827A (en) | The cation of Propofol migrates spectrum detection method in a kind of expiratory air | |
| JPH0731165Y2 (en) | Magnetic pressure type oxygen analyzer | |
| JPH02290550A (en) | Magnetic pressure type oxygen analyzer | |
| JPH0121903B2 (en) | ||
| JPS6330995Y2 (en) | ||
| JPH0433639A (en) | Electromagnetic rheometer probe | |
| JPS592522Y2 (en) | magnetic oxygen analyzer | |
| JPH08254523A (en) | Measuring device and method for measuring oxygen permeability of sample | |
| JP3172571B2 (en) | Gas concentration measuring method and device using reference gas concentration adjusting method | |
| JP4756343B2 (en) | Magnetic oxygen meter | |
| JPH0517559U (en) | Oxygen meter | |
| JPH089634Y2 (en) | Atmospheric CH ▲ Bottom 4 ▼ Concentration measuring device | |
| JP2567655B2 (en) | Gas analyzer |