JPS6139615B2 - - Google Patents
Info
- Publication number
- JPS6139615B2 JPS6139615B2 JP1123481A JP1123481A JPS6139615B2 JP S6139615 B2 JPS6139615 B2 JP S6139615B2 JP 1123481 A JP1123481 A JP 1123481A JP 1123481 A JP1123481 A JP 1123481A JP S6139615 B2 JPS6139615 B2 JP S6139615B2
- Authority
- JP
- Japan
- Prior art keywords
- holes
- substrate
- detector
- hole
- wheatstone bridge
- 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
- 239000000758 substrate Substances 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/66—Thermal conductivity detectors
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 Electric Means (AREA)
Description
【発明の詳細な説明】
本発明は、被測定ガスが有する熱伝導度を利用
して、ガス分析を行う装置の検出器に関し、さら
に詳しくは、高速ガスクロマトグラフの検出器と
して最適な直通形の熱伝導形検出器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detector for a device that performs gas analysis by utilizing the thermal conductivity of a gas to be measured. Regarding thermal conduction type detectors.
第１図は、従来のガスクロマトグラフの直通形
の熱伝導度形検出器の構成説明図である。検出器
は、金属ブロツク２１に形成してなる二個の空洞
部２２及び２３内に、フイラメント２８及び２９
を設置して測定室２２及び基準室２３を構成し、
被測定ガスを流入口２４から流出口２５へ、ま
た、キヤリヤガスを流入口２６から流出口２７へ
夫々流すようになつている。 FIG. 1 is an explanatory diagram of the configuration of a conventional direct-type thermal conductivity detector for a gas chromatograph. The detector includes filaments 28 and 29 in two cavities 22 and 23 formed in a metal block 21.
are installed to configure the measurement chamber 22 and the reference chamber 23,
The gas to be measured is allowed to flow from the inlet 24 to the outlet 25, and the carrier gas is allowed to flow from the inlet 26 to the outlet 27, respectively.
ところで、このような直通形の検出器はできだ
け小形、即ち、測定室の内容積が小さい方が、応
答性を高めることができるので望ましい。しかし
ながら、フイルラメント２８及び２９に所定の抵
抗値をもたせようとすると、その形状が大きくな
り、どうしても測定室の内容積が大きくならざる
を得ないのが実状である。また、フイルラメント
２８及び２９を金属ブロツク２１で形成する空洞
部２２及び２３に設置しているので、断線時の交
換作業が難しく、時には、検出器全体を交換する
ことになり、保守コストを高める点に難点があつ
た。 Incidentally, it is desirable that such a direct type detector be as small as possible, that is, the internal volume of the measurement chamber is as small as possible, since responsiveness can be improved. However, in reality, if it is attempted to provide the fillaments 28 and 29 with a predetermined resistance value, their shape becomes large, and the internal volume of the measurement chamber inevitably becomes large. In addition, since the filaments 28 and 29 are installed in the cavities 22 and 23 formed by the metal block 21, it is difficult to replace them when the wire breaks, and sometimes the entire detector has to be replaced, which increases maintenance costs. There were some difficulties.
本発明は、かかる点に鑑みてなされたものであ
り、本発明は、測定室の内容積を小さく、かつ、
フイルラメントの交換を容易にするために、板面
に第１及び第２の貫通穴を形成し、その貫通穴
夫々に橋絡状に設置して成る抵抗体を有する第１
及び第２の基板を用い、夫々の基板の第１の貫通
穴同士を、また、第２の貫通穴同士を合せて一体
化して形成される室、即ち、第１の貫通穴で形成
される室を測定室、第２の貫通穴で形成される室
を基準室とするセンサブロツクを有するようにな
つている。 The present invention has been made in view of these points, and the present invention reduces the internal volume of the measurement chamber, and
In order to facilitate replacement of the fill lament, first and second through holes are formed in the plate surface, and a first resistor is provided in each of the through holes in a bridging manner.
and a second substrate, and a chamber is formed by integrating the first through holes of each substrate and the second through holes, that is, the chamber is formed by the first through hole. The sensor block has a measurement chamber and a chamber formed by the second through hole as a reference chamber.
以下、図面を参照し本発明について詳しく説明
する。 Hereinafter, the present invention will be explained in detail with reference to the drawings.
第２図〜第４図は、本発明の一実施例によるガ
スクロマトグラフの検出器の構成説明図であり、
第２図は、基板１の斜視図、第３図は、第２図の
Ａ−Ａ断面図、第４図は、検出器の縦断面図であ
る。第２図及び第３図において、基板１は、その
板面に形成して成る貫通穴２及び３と、各貫通穴
夫々に橋絡状に設置して成る櫛の歯状の抵抗体４
及び５とを有する。そして、抵抗体４及び５の各
端部６及び７並びに８及び９は、基板１の端部に
て、他の抵抗体が回路に接続し得るようになつて
いる。 2 to 4 are explanatory diagrams of the configuration of a gas chromatograph detector according to an embodiment of the present invention,
FIG. 2 is a perspective view of the substrate 1, FIG. 3 is a sectional view taken along the line AA in FIG. 2, and FIG. 4 is a longitudinal sectional view of the detector. In FIGS. 2 and 3, a substrate 1 has through holes 2 and 3 formed on its plate surface, and a comb-teeth-shaped resistor 4 installed in each through hole in a bridging manner.
and 5. The ends 6 and 7 and 8 and 9 of the resistors 4 and 5 are arranged so that other resistors can be connected to the circuit at the ends of the substrate 1.
次に、上記基板１を用いて構成した検出器につ
いて、第４図を参照して説明する。 Next, a detector constructed using the above substrate 1 will be explained with reference to FIG. 4.
検出器は、２個の基板１及び基板１に略合同な
形状、即ち、板面に貫通穴１１及び１２を形成し
て成るスペーサ１０（抵抗体を有せず）を有し、
貫通穴２と１１とを、また、貫通穴３と１２とを
夫々一致させて一体化すると共に、抵抗体４と５
とでホイートストンブリツジを構成して成るセン
サブロツクと、ホイートストンブリツジに電力を
供給する電源（図示せず）とで構成されている。 The detector has two substrates 1 and a spacer 10 (without a resistor) having a shape substantially congruent with the substrate 1, that is, through holes 11 and 12 formed in the plate surface,
Through holes 2 and 11 and through holes 3 and 12 are aligned and integrated, respectively, and resistors 4 and 5 are integrated.
The sensor block comprises a Wheatstone bridge, and a power source (not shown) that supplies power to the Wheatstone bridge.
なお、センサブロツクの一体化は、公知の手
段、例えば、接着剤、ボルト・ナツト（この場
合、ボルト貫通用の穴を板面に設ける必要があ
る）等を用いてなされている。 The sensor blocks are integrated using known means such as adhesives, bolts and nuts (in this case, it is necessary to provide holes in the plate surface for the bolts to pass through).
上記構成の検出部は、貫通穴２と１１とで形成
される室を含んで被測定ガス流路Fmを構成する
と共に、貫通穴３と１２とで形成される室を含ん
でキヤリヤガス流路Frを構成して、ガスクロマ
トグラフの検出器として機能する。 The detection section having the above configuration includes a chamber formed by through holes 2 and 11 to constitute a gas flow path Fm to be measured, and a chamber formed by through holes 3 and 12 to constitute a carrier gas flow path Fr. It functions as a gas chromatograph detector.
このように、検出器のセンサブロツクの測定室
は、基板１及びスペーサ１０の板面に形成した貫
通穴２及び１１で構成しているので、測定室の内
容積を小さくすることができる。また、ボルト・
ナツトを用いて一体化したセンサブロツクは、そ
の解体が容易なので、抵抗体や基板の交換が簡単
で、保守性に優れている。 In this way, since the measurement chamber of the sensor block of the detector is constituted by the through holes 2 and 11 formed in the plate surfaces of the substrate 1 and the spacer 10, the internal volume of the measurement chamber can be reduced. Also, bolt
A sensor block integrated using a nut can be easily disassembled, making it easy to replace the resistor and board, and has excellent maintainability.
なお、上記実施例は、ガスクロマトグラフの検
出器について説明したが、本発明はこれに限定す
るものではなく、他の分析計、例えば、H2計、
O2計、CO2計等の検出器であつてもよい。 Although the above embodiment describes a gas chromatograph detector, the present invention is not limited to this, and may be applied to other analyzers such as an H 2 meter,
It may be a detector such as an O 2 meter or a CO 2 meter.
また、上記実施例は、スペーサを介在して２個
の基板を一体化しているが、本発明はスペーサを
必ずしも必要としない。抵抗体が設置されていな
い板面同士を合せて、２個の基板を一体化し、測
定室及び基準室を形成してもよい。 Further, in the above embodiment, two substrates are integrated with a spacer interposed therebetween, but the present invention does not necessarily require a spacer. The two substrates may be integrated by aligning the plate surfaces on which the resistors are not installed to form a measurement chamber and a reference chamber.
さらに、上記実施例は、櫛の歯状の抵抗体を用
いているが、本発明はこれに限定するものではな
く、渦巻状の抵抗体であつてもよい。 Further, although the above embodiment uses a comb-like resistor, the present invention is not limited to this, and a spiral resistor may be used.
以上、詳しく説明したように、本発明の熱伝導
度形検出器によれば、板面に貫通穴を形成し、そ
の貫通穴に橋絡状に設置する抵抗体を有する基板
で測定室を構成するようになつているので、測定
室の内容積を小さくすることができ、また、抵抗
体を簡単に交換することができる。 As explained in detail above, according to the thermal conductivity type detector of the present invention, the measurement chamber is configured with a substrate having a through hole formed in the plate surface and a resistor installed in the through hole in a bridging manner. Therefore, the internal volume of the measurement chamber can be reduced, and the resistor can be easily replaced.
第１図は、従来の直通形の熱伝導度形検出器の
構成説明図、第２図は、本発明の一実施例による
熱伝導度形検出器を構成するエレメント（基板）
の構成説明図、第３図は、第２図のＡ−Ａ断面
図、第４図は、本発明の一実施例による熱伝導度
形検出器の構成説明図である。
１……基板、２及び３……貫通穴、４及び５…
…抵抗体、１０……スペーサ。
FIG. 1 is an explanatory diagram of the configuration of a conventional direct-type thermal conductivity detector, and FIG. 2 is an element (substrate) constituting a thermal conductivity detector according to an embodiment of the present invention.
FIG. 3 is a sectional view taken along the line A-A in FIG. 2, and FIG. 4 is an explanatory diagram of the configuration of a thermal conductivity type detector according to an embodiment of the present invention. 1... Board, 2 and 3... Through hole, 4 and 5...
...Resistor, 10...Spacer.
Claims (1)
通穴夫々に橋絡状に設置して成る抵抗体を有する
第１及び第２の基板から成り、該第１及び第２の
基板の第１の貫通穴同士を、また、第２の貫通穴
同士を合せて一体化すると共に、前記各抵抗体で
ホイートストンブリツジを構成して成るセンサブ
ロツクと、該ホイートストンブリツジに印加する
電源とを具備し、前記第１の貫通穴に測定ガスを
流すと共に、前記第２の貫通穴に基準ガスを流す
か、封じ込んで、前記ホイートストンブリツジの
出力を測定信号とすることを特徴とする熱伝導度
形検出器。1 Consisting of first and second substrates having first and second through holes formed in the plate surface and resistors installed in each of the through holes in a bridging manner, A sensor block is formed by integrating the first through holes of the substrate and the second through holes of the substrate, and forming a Wheatstone bridge with each of the resistors, and applying an electric current to the Wheatstone bridge. A power source is provided, and the measuring gas is caused to flow through the first through hole, and a reference gas is caused to flow through or sealed in the second through hole, and the output of the Wheatstone bridge is used as a measurement signal. Thermal conductivity type detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1123481A JPS57125345A (en) | 1981-01-28 | 1981-01-28 | Heat conductivity type detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1123481A JPS57125345A (en) | 1981-01-28 | 1981-01-28 | Heat conductivity type detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57125345A JPS57125345A (en) | 1982-08-04 |
| JPS6139615B2 true JPS6139615B2 (en) | 1986-09-04 |
Family
ID=11772243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1123481A Granted JPS57125345A (en) | 1981-01-28 | 1981-01-28 | Heat conductivity type detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57125345A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006058201A (en) * | 2004-08-23 | 2006-03-02 | Gas Mitsukusu Kogyo Kk | Heat conduction type gas analyzer |
-
1981
- 1981-01-28 JP JP1123481A patent/JPS57125345A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57125345A (en) | 1982-08-04 |
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