JPS6226413B2 - - Google Patents
Info
- Publication number
- JPS6226413B2 JPS6226413B2 JP2174480A JP2174480A JPS6226413B2 JP S6226413 B2 JPS6226413 B2 JP S6226413B2 JP 2174480 A JP2174480 A JP 2174480A JP 2174480 A JP2174480 A JP 2174480A JP S6226413 B2 JPS6226413 B2 JP S6226413B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- measuring cell
- measuring device
- pump
- pump chamber
- 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
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000011490 mineral wool Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Combustion & Propulsion (AREA)
- Biophysics (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
【発明の詳細な説明】
本発明は、特許請求の範囲第１項の前提部に記
載された種類のガス測定装置、つまり測定セル、
表示装置および減圧による試料採取器を有するガ
ス測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION The invention relates to a gas measuring device of the type defined in the preamble of claim 1, namely a measuring cell;
The present invention relates to a gas measuring device having a display device and a sample collector using reduced pressure.
このガス測定装置は、ガス混合物中のガス成
分、例えば環境空気中の有害物質もしくは人間の
呼気中の成分の確認および測定のために役立つ。
多くの場合、測定装置は容易に運搬できねばなら
ない。測定開始における試料の採取が特に重要で
あり、これによつて検査すべきガス混合物の代表
的モデルが提供される。 This gas measuring device serves for the identification and measurement of gas components in gas mixtures, for example harmful substances in the ambient air or components in human exhalation.
In many cases, measuring devices must be easily transportable. Of particular importance is the sampling at the beginning of the measurement, which provides a representative model of the gas mixture to be examined.
公知の可搬性ガス表示装置は、ケーシング内に
ガス感知素子を有する測定セルを有する。測定セ
ルにはベンチレータが前接されている。ベンチレ
ータは電動モータによつて駆動され、該モータは
ケーシング内に収納されたバツテリーから給電さ
れる。ケーシングの吸込口によりベンチレータは
検査すべきガスを吸込み、測定セルに送る。 Known portable gas display devices have a measuring cell with a gas sensing element inside the casing. A ventilator adjoins the measuring cell. The ventilator is driven by an electric motor, which is powered by a battery housed within the casing. Through the inlet in the housing, the ventilator sucks in the gas to be tested and sends it to the measuring cell.
測定セルの測定値は表示装置で認められる。欠
点は、電動モータによつて動かされるベンチレー
タが高価で故障し易くかつ保守が必要であること
である。ベンチレータは可搬装置にとつては重量
負荷である（西ドイツ国特許第2324404号明細
書）。 The measured value of the measuring cell is recognized on the display device. The disadvantage is that ventilators powered by electric motors are expensive, prone to failure, and require maintenance. Ventilators are a heavy load for portable equipment (DE 2324404).
公知測定装置では、ガス感知素子を有する測定
セルは一方では吸込み管を介して検査すべきガス
用案内管と接続されている。他方では測定セルに
は接続管を介して手動のピストンポンプが後接さ
れ、該ポンプのシリンダはたんに接続管に開口し
ている。ポンプのピストンが圧縮ばねの力に抗し
て押下げられると、ガスがシリンダから接続管、
測定室および吸込み管を経て案内管中へ駆動され
る。ポンプのピストンを解放すると、圧縮ばねの
弛緩下に反対方向の運動が行なわれ、この場合ガ
スは案内管から測定セル中へ吸込まれ、ここで測
定される。測定値は表示装置によつて表示され
る。欠点は、故障および磨耗し易くならびに保守
を必要としかつ気密にすることのできない可動部
分による試料採取である（英国特許第1448557
号）。 In known measuring devices, a measuring cell with a gas sensing element is connected on the one hand via a suction pipe to a guide pipe for the gas to be tested. On the other hand, a manual piston pump is downstream connected to the measuring cell via a connecting tube, the cylinder of which simply opens into the connecting tube. When the pump piston is pushed down against the force of the compression spring, gas flows from the cylinder to the connecting pipe,
It is driven into the guide tube via the measuring chamber and the suction tube. When the piston of the pump is released, a movement in the opposite direction takes place under the relaxation of the compression spring, in which case the gas is drawn from the guide tube into the measuring cell and is measured there. The measured values are displayed by a display device. Disadvantages are sampling with moving parts that are prone to breakdown and wear and that require maintenance and cannot be made airtight (UK Patent No. 1448557
issue).
本発明の課題は、可動部分がなく、従つて軽く
かつ密封の困難のない試料採取器を有するガス測
定装置を提供することである。 The object of the invention is to provide a gas measuring device with a sampler without moving parts, which is therefore lightweight and without difficulties in sealing.
この課題の解決は特許請求の範囲第１項の特
徴、即ち試料採取器が測定セルに後接された、加
熱によつて作動される膨脹ポンプであることによ
つて行なわれる。本発明により得られる利点は、
何らかの可動部分が存在しないことから明らかで
ある。ガス搬送はたんにポンプ室内に存在するガ
スの熱により惹起される膨脹によつて行なわれ
る。これによつて駆動されるガス量は、加熱を遮
断した後に冷却する際ガス試料として逆流する。
試料採取器は軽く、密封の困難がない。該採取器
は簡単に、測定セルを有する吸込み管に接続でき
る。試料採取器の僅かな重量により、可搬性ガス
測定装置の使用は非常に有利である。 This object is achieved by the features of claim 1, namely that the sample collector is a heat-activated expansion pump downstream of the measuring cell. The advantages obtained by the present invention are:
This is evident from the absence of any moving parts. Gas transport takes place solely by heat-induced expansion of the gas present in the pump chamber. The gas quantity driven thereby flows back as a gas sample during cooling after switching off the heating.
The sampler is light and there are no sealing difficulties. The sampler can be easily connected to a suction tube with a measuring cell. Due to the low weight of the sampler, the use of portable gas measuring devices is very advantageous.
有利な実施態様は特許請求の範囲第２項〜第４
項から明らかである。 Advantageous embodiments are defined in claims 2 to 4.
It is clear from the section.
特許請求の範囲第２項の特徴による解決法は、
特に簡単、容易かつ作動確実な構造を可能にす
る。 The solution according to the features of claim 2 is:
It allows for a particularly simple, easy and reliable construction.
特許請求の範囲第３項による解決法は、可搬ガ
ス測定装置において生じうるような位置変化およ
び振動の、ポンプ室のガス内容物に対する影響を
回避する。 The solution according to claim 3 avoids the influence of positional changes and vibrations on the gas content of the pump chamber, such as can occur in portable gas measuring devices.
図面には本発明の実施例が略示されており、次
にこれを記載する。 An embodiment of the invention is schematically illustrated in the drawing and will be described in the following.
第１図において、吸込み管１内には測定セル２
が配置されており、そのガス感知素子３は表示装
置４と接続されている。吸込み管１は端５で、検
査すべきガス混合物を一緒にする装着可能の案内
管６中に開いている。他端で、吸込み管１には膨
脹ポンプ７が接続されている。 In FIG. 1, a measuring cell 2 is located inside the suction pipe 1.
is arranged, and its gas sensing element 3 is connected to a display device 4. The suction tube 1 opens at its end 5 into an attachable guide tube 6 which brings together the gas mixture to be tested. At the other end, an expansion pump 7 is connected to the suction pipe 1 .
膨脹ポンプ７は、その内部空間がポンプ室９を
形成する容器８と電熱線１０からなる。ポンプ室
９はガラス綿１１が充填されている。電熱線１０
は導線１２により、電熱線１０への電力供給を定
める制御装置１３に接続されている。 The expansion pump 7 consists of a container 8 whose internal space forms a pump chamber 9 and a heating wire 10. The pump chamber 9 is filled with glass cotton 11. heating wire 10
is connected by a conductor 12 to a control device 13 which determines the power supply to the heating wire 10.
測定の開始は、制御装置１３により電熱線１０
を短時間加熱して惹起される。これによつてポン
プ室９内に存在するガスは加熱されて膨脹し、従
つてこのガスの一部は測定セル２を有する吸込み
管１により駆動される。その代りに、検査すべき
ガス混合物の同量の試料が、電熱線１０およびポ
ンプ室９の冷却により反対の経路で吸込まれる。
僅かな熱慣性のため試料採取は急速に経過する。
ポンプ室９の容積７cm3、測定セル２の容積0.5cm3
ならびに電熱線10を５秒間980℃に加熱する場合
にガス１cm3が駆動されるかないしは同様の長さの
冷却時間の間に１cm3が試料として吸込まれる。 The start of the measurement is controlled by the control device 13 when the heating wire 10 is
It is induced by heating for a short time. As a result, the gas present in the pump chamber 9 is heated and expands, so that a portion of this gas is driven by the suction pipe 1 with the measuring cell 2. Instead, an equal amount of sample of the gas mixture to be tested is sucked in in the opposite path by means of the heating wire 10 and the cooling of the pump chamber 9.
Due to the small thermal inertia, the sampling process progresses rapidly.
Volume of pump chamber 9: 7 cm 3 , Volume of measuring cell 2: 0.5 cm 3
Also, when heating the heating wire 10 to 980° C. for 5 seconds, 1 cm 3 of gas is driven, or during a cooling time of similar length 1 cm 3 is sucked in as a sample.
試料がガス感知素子３と接触することによつて
電圧が生じ、その最大値が表示装置４によつて表
示される測定値である。 The contact of the sample with the gas sensing element 3 generates a voltage, the maximum value of which is the measured value displayed by the display device 4.
第２図の部分図において、類似構造のガス測定
装置の場合に測定セルおよびポンプ室は、ガス感
知素子３ならびに電熱線１０を含有する共通のケ
ーシング１４中にまとめられている。 In the partial view of FIG. 2, in the case of a gas measuring device of similar construction, the measuring cell and the pump chamber are combined in a common housing 14, which contains the gas sensing element 3 and the heating wire 10.
適切な測定開始においてコンパクトな構造が得
られる。 With a suitable measurement start, a compact structure is obtained.
図は本発明の実施例を示すもので、第１図は別
個の測定セルおよび加熱室を有するガス測定装置
の略図、第２図は測定セルおよびポンプ室用の共
通のケーシングを有するガス測定装置のガス案内
部の略図である。
１……吸込み管、２……測定セル、３……ガス
感知素子、４……表示装置、６……案内管、７…
…膨脹ポンプ、９……ポンプ室、１０……電熱
線、１３……制御測置。
The figures show an embodiment of the invention, FIG. 1 being a schematic illustration of a gas measuring device with separate measuring cells and heating chambers, and FIG. 2 being a gas measuring device with a common casing for the measuring cell and the pump chamber. FIG. DESCRIPTION OF SYMBOLS 1... Suction pipe, 2... Measurement cell, 3... Gas sensing element, 4... Display device, 6... Guide tube, 7...
...Expansion pump, 9...Pump room, 10...Heating wire, 13...Control measurement.
Claims (1)
取器を有するガス測定装置において、試料採取器
が測定セル２に後接された、加熱によつて作動さ
れる膨脹ポンプ７であることを特徴とするガス測
定装置。 ２ 膨脹ポンプ７が吸込み管１に接続された、電
熱線１０を有するポンプ室９である、特許請求の
範囲第１項記載のガス測定装置。 ３ ポンプ室９が付加的に鉱物綿１１で充填され
ている、特許請求の範囲第１項または第２項記載
のガス測定装置。 ４ 測定セルおよびポンプ室が共通のケーシング
１４を有する、特許請求の範囲第１項から第３項
までのいずれか１項記載のガス測定装置。[Claims] 1. A gas measuring device having a measuring cell, a display device, and a sample collector using reduced pressure, in which the sample sampler is an expansion pump 7 connected to the measuring cell 2 and operated by heating. A gas measuring device characterized by: 2. The gas measuring device according to claim 1, wherein the expansion pump 7 is a pump chamber 9 having a heating wire 10 and connected to the suction pipe 1. 3. Gas measuring device according to claim 1 or 2, in which the pump chamber 9 is additionally filled with mineral wool 11. 4. The gas measuring device according to any one of claims 1 to 3, wherein the measuring cell and the pump chamber have a common casing 14.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2907434 | 1979-02-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55146024A JPS55146024A (en) | 1980-11-14 |
| JPS6226413B2 true JPS6226413B2 (en) | 1987-06-09 |
Family
ID=6063929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2174480A Granted JPS55146024A (en) | 1979-02-26 | 1980-02-25 | Gas measuring device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS55146024A (en) |
| DD (1) | DD147723A5 (en) |
| FR (1) | FR2449878A1 (en) |
| GB (1) | GB2044462B (en) |
| SE (1) | SE7909477L (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63136362U (en) * | 1987-02-27 | 1988-09-07 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3904994A1 (en) * | 1989-02-18 | 1990-08-23 | Draegerwerk Ag | DEVICE FOR PROMOTING A MEASURING SAMPLE INTO THE MEASURING CHAMBER OF A PROBE AND MEASURING METHOD THEREFOR |
| US7062952B2 (en) * | 2003-05-21 | 2006-06-20 | General Electric Company | Combustible gas detector having flow-through sensor container and method for measuring such gases |
| US7056098B2 (en) | 2003-05-21 | 2006-06-06 | General Electric Company | Pump for supplying a gas to a sensor and methods therefor |
| US20140134053A1 (en) * | 2012-11-14 | 2014-05-15 | Sensirion Ag | Portable electronic device with chemical sensor |
| KR102256488B1 (en) * | 2017-09-14 | 2021-05-27 | 주식회사 엘지에너지솔루션 | Gas measuring equipment for rechargeable battery test |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT989631B (en) * | 1972-06-13 | 1975-06-10 | Honda Motor Co Ltd | DEVICE FOR THE IDENTIFICATION OF CHEMICAL COMPONENTS PRESET IN GAS |
| GB1448557A (en) * | 1972-09-26 | 1976-09-08 | Lion Lab Ltd | Apparatus for detecting or measuring a constituent of a gas |
| US4115229A (en) * | 1976-11-08 | 1978-09-19 | Thermo-Lab Instruments, Inc. | Apparatus for sampling a gaseous stream |
| FR2441160A1 (en) * | 1978-11-03 | 1980-06-06 | Jones Thomas | SAMPLING DEVICE FOR GAS ANALYSIS APPARATUS |
-
1979
- 1979-11-16 SE SE7909477A patent/SE7909477L/en not_active Application Discontinuation
- 1979-12-04 DD DD21735479A patent/DD147723A5/en unknown
-
1980
- 1980-02-14 GB GB8004916A patent/GB2044462B/en not_active Expired
- 1980-02-20 FR FR8004260A patent/FR2449878A1/en active Granted
- 1980-02-25 JP JP2174480A patent/JPS55146024A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63136362U (en) * | 1987-02-27 | 1988-09-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| SE7909477L (en) | 1980-08-27 |
| GB2044462B (en) | 1983-06-15 |
| FR2449878A1 (en) | 1980-09-19 |
| JPS55146024A (en) | 1980-11-14 |
| FR2449878B1 (en) | 1984-04-27 |
| GB2044462A (en) | 1980-10-15 |
| DD147723A5 (en) | 1981-04-15 |
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