JPH0396847A - Low molecular weight organic liquid detecting sensor - Google Patents
Low molecular weight organic liquid detecting sensorInfo
- Publication number
- JPH0396847A JPH0396847A JP23448389A JP23448389A JPH0396847A JP H0396847 A JPH0396847 A JP H0396847A JP 23448389 A JP23448389 A JP 23448389A JP 23448389 A JP23448389 A JP 23448389A JP H0396847 A JPH0396847 A JP H0396847A
- Authority
- JP
- Japan
- Prior art keywords
- molecular weight
- low molecular
- weight organic
- gasoline
- conductive sheet
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 2
- 239000003502 gasoline Substances 0.000 abstract description 31
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 239000002390 adhesive tape Substances 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 229920000728 polyester Polymers 0.000 abstract description 2
- 238000005476 soldering Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000001846 repelling effect Effects 0.000 abstract 1
- 239000005871 repellent Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 101100313164 Caenorhabditis elegans sea-1 gene Proteins 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 240000004307 Citrus medica Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- ULYZAYCEDJDHCC-UHFFFAOYSA-N isopropyl chloride Chemical compound CC(C)Cl ULYZAYCEDJDHCC-UHFFFAOYSA-N 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ガソリンなどの低分子量有機液体の存在を検
知するためのガソリン検知センサに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gasoline detection sensor for detecting the presence of a low molecular weight organic liquid such as gasoline.
ガソリンは主として内燃機関、それも特に自動車のエン
ジンの燃料に用いられ、自動車の場合、通常ガソリンは
給油所で給油する。周知のように、ガソリンは揮発性が
高く非常に引火し易いため、その取扱いには十分注意す
る必要があり、給抽所は火気厳禁である。Gasoline is primarily used as a fuel for internal combustion engines, especially automobile engines, and automobiles are usually refilled with gasoline at gas stations. As is well known, gasoline is highly volatile and highly flammable, so it must be handled with great care, and open flames are strictly prohibited at extraction stations.
ところで、給油所ではガソリンを主に地下に設けたタン
クに蓄えてあり、これを給油機により自動車の燃料タン
クに導いている。給油機からの給油は慎重に行うことが
肝心であり、そうでないと、給油機からのガソリン漏れ
は大事故につながる危険がある。カソリン以外の低分子
量有機液体においても同様のことがいえる。By the way, at gas stations, gasoline is mainly stored in tanks installed underground, and the gasoline is guided to the fuel tank of the car by a gas tank. It is important to be careful when refueling from a refueling machine, otherwise there is a risk that gasoline leaking from the refueling machine could lead to a major accident. The same can be said for low molecular weight organic liquids other than catholine.
そのため、ガソリンなどの低分子量有機液体の漏洩を検
知するためのセンザが提供されている。Therefore, sensors have been provided for detecting leakage of low molecular weight organic liquids such as gasoline.
このセンサば、天然ゴムやエチレン・プロピレンゴム（
ＥＰゴム）を主成分とする合威物からなる導電性シート
を有し、このシートの両端に端子を取付け、ポリエチレ
ンなどからなる撥水性フィルムでシー１・を被覆した構
造である。ここにおいて、撥水性フィルムは親水性の少
ないポリエチレンやポリプロピレンなどを用いた織布、
不織布であり、水は通さないが、ガソリンなどの低分子
量有機液体は通す特性を有するものである。当該センサ
では、シートに常時電流を流しておき、ガソリンなどの
低分子量有機液体が、液体として、または華気としてフ
ィルムに付着すると、それがフィルムを通ってシートに
達し、シー１・の低分子量有機液体又はその草気付着部
分が膨潤するに伴ってシートの電気抵抗が増大し、電流
が流れ難くなる。これを電気的に検出して、低分子量有
機液体の漏れを検知しようとするものである。This sensor is made of natural rubber, ethylene/propylene rubber (
It has a structure in which a conductive sheet is made of a composite material whose main component is EP rubber, terminals are attached to both ends of this sheet, and the sheet 1 is covered with a water-repellent film made of polyethylene or the like. Here, the water-repellent film is a woven fabric made of less hydrophilic polyethylene, polypropylene, etc.
It is a nonwoven fabric that does not allow water to pass through, but has the property of allowing low molecular weight organic liquids such as gasoline to pass through. In this sensor, a current is constantly passed through the sheet, and when a low molecular weight organic liquid such as gasoline adheres to the film as a liquid or as a gas, it passes through the film and reaches the sheet, causing the low molecular weight of Sea 1. As the organic liquid or its weed-attached portion swells, the electrical resistance of the sheet increases, making it difficult for current to flow. This is electrically detected to detect leakage of low molecular weight organic liquid.
〔発明が解決しようとする課題］
かかるセンヅは、通常は給油機などの内部、特に内部配
管系に設置されるが、撥水性フィルムの撥水性が良好で
なく、水が導電性シー１・に達することがあるという問
題点を有している。水がフィルムを透過してシートに付
着していると、ガソリンなどの低分子量有機液体による
膨潤を阻害するばかりでなく、端子部分の腐食の原因と
もなるため、上記センサは低分子量有機液体の漏洩に対
する感度が不良で、的確な検知ができず、現在ではほと
んど使用されていないのが実情である。。[Problems to be Solved by the Invention] Such sensors are usually installed inside refueling machines and the like, especially in internal piping systems. The problem is that it can sometimes reach If water passes through the film and adheres to the sheet, it will not only inhibit the swelling caused by low molecular weight organic liquids such as gasoline, but also cause corrosion of the terminals. The reality is that they have poor sensitivity and cannot be accurately detected, so they are hardly used today. .
故に現今、給柚機内部でのガソリンなどの低分子量有機
液体の漏れ対策は何ら講しられていないのが現状である
。Therefore, at present, no measures have been taken to prevent leakage of low molecular weight organic liquids such as gasoline inside the citron dispenser.
従って本発明の目的は、給油機内部、特に内部配管系な
どでのガソリンなどの低分子量有機液体の存在、例えば
泪洩に対して感度良好なガソリン検知センサを提供ずる
ことにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a gasoline detection sensor that is highly sensitive to the presence of a low molecular weight organic liquid such as gasoline, such as leakage, inside a refueling machine, particularly in an internal piping system.
前記目的は、絶縁・撥水性フィルムとしてＩＣｆ１当た
り１０４個以上の微細孔を有する多孔質フィルムを用い
たセンサにより達威される。The above object is achieved by a sensor using a porous film having 104 or more micropores per ICf1 as an insulating/water-repellent film.
本発明のセンサは、防水性及び低分子量有機液体透過性
が高く、極微量のガソリンなどの低分子量有機液体、そ
の蒸気にも素早く反応し、感度が良好である。The sensor of the present invention has high waterproofness and low molecular weight organic liquid permeability, quickly reacts to extremely small amounts of low molecular weight organic liquids such as gasoline, and their vapors, and has good sensitivity.
しかして、本発明において導電性シートを被覆する撥水
性フィルムは、１０４個／ｃｒｌ以上、好ましくは１０
５個／ ｃｉ以上、特に好ましくは１０６個／ｅｌ１以
上の微細孔を有する絶縁性多孔質フィルムであれば特に
限定はない。Therefore, in the present invention, the number of water-repellent films covering the conductive sheet is 104 pieces/crl or more, preferably 104 pieces/crl or more.
There is no particular limitation as long as the insulating porous film has micropores of 5 pores/ci or more, particularly preferably 10 6 micropores/el1 or more.
かかるフィルムとしては、日東電工■製旦クロテックス
、同製ブレスロンなどが例示される。この内、ミクロテ
ックスは微細孔が１ｃ＋ｆｌ当たり数億個以上、ブレス
ロンは同しく１０６個／ ｃｒＭ以上であり、撥水性フ
ィルムとして最適である。Examples of such films include Dan Clotex manufactured by Nitto Denko Corporation and Braslon manufactured by Nitto Denko Corporation. Among these, Microtex has over several hundred million micropores per 1c+fl, and Breslon has over 106 micropores/crM, making it ideal as a water-repellent film.
上記撥水性フィルムで被覆する導電性シートには特に限
定はなく、〔従来の技術］の欄で述べた如き天然ゴムや
ＥＰゴムからなるシートでもよいが、スチレン・エチレ
ン・ブタジエン・スチレン共重合体（ＳＥＢＳ）などの
熱可塑性エラストマとカーボンとからなり、且つ未架橋
でショアＡ硬度（ゴムの硬さ）７０以下のシートである
ことが望ましい。特に後者の導電性シー１・であれば、
ガソリンなどに対する膨潤性が一層高くなり、センサの
感度がさらに向上ずるので好ましい。The conductive sheet covered with the water-repellent film is not particularly limited, and may be a sheet made of natural rubber or EP rubber as described in the [Prior Art] section, but may be a sheet made of styrene/ethylene/butadiene/styrene copolymer. It is desirable that the sheet is made of a thermoplastic elastomer such as (SEBS) and carbon, is uncrosslinked, and has a Shore A hardness (rubber hardness) of 70 or less. Especially if the latter conductive sea 1.
This is preferable because the swelling property with respect to gasoline etc. is further increased, and the sensitivity of the sensor is further improved.
本発明のセンサは低分子量有機液体の存在（漏洩）を検
出するためのものであり、ここに液体とは室温にて液体
の状態のものをいう。当該液体としては、分子量３００
以下、特に１５０以下のものが好ましく、かかる液体と
しては、例えばアルコールＭ（メタノール、エタノール
など）、潤滑油（トランス油など）、ケトン頻（メチル
エチルケ１・ン、アセトンなど）、軽油、灯油、ガソリ
ン、ナフサ、リグロイン、ヘンゼン、トルエン、キンレ
ン、塩素系溶剤（クロロホルムなど）などが例示される
。The sensor of the present invention is for detecting the presence (leakage) of a low molecular weight organic liquid, where the liquid refers to one in a liquid state at room temperature. The liquid has a molecular weight of 300
The following liquids are particularly preferably 150 or less, and examples of such liquids include alcohol M (methanol, ethanol, etc.), lubricating oil (transformer oil, etc.), ketone oil (methyl ethyl chloride, acetone, etc.), light oil, kerosene, gasoline. , naphtha, ligroin, henzene, toluene, quinolene, and chlorinated solvents (chloroform, etc.).
本発明の低分子量有機液体検知センサにおいては、当該
液体が、液状またはその蒸気の態様にて導電性シートと
接触することによって導電性シトが膨潤し、これによっ
てシートの電気抵抗に変化をきたすので、この電気抵抗
の変化を検知することによって、低分子量有機液体のの
漏洩を検知するものである。In the low molecular weight organic liquid detection sensor of the present invention, when the liquid comes into contact with the conductive sheet in the form of liquid or vapor, the conductive sheet swells, which causes a change in the electrical resistance of the sheet. By detecting this change in electrical resistance, leakage of the low molecular weight organic liquid is detected.
なお、本発明のセンザはガソリンなどの低分子量有機液
体の存在（漏洩）を検出するためのものであるが、実際
に給油機などに設置するに際しては、電源の他に電気抵
抗増加による電流変化を検出するための検流計、さらに
必要に応して検流計によって電流異常が検出されたこと
を容易に知らしめるために発音または発光手段を併用し
、ガソリンなどの低分子量有機液体の漏れを知覚し易く
しておくことが肝要である。The sensor of the present invention is intended to detect the presence (leakage) of low-molecular-weight organic liquids such as gasoline, but when actually installed in a refueling machine, etc., it is necessary to detect the presence (leakage) of low-molecular-weight organic liquids such as gasoline. A galvanometer is used to detect the leakage of low molecular weight organic liquids such as gasoline, and if necessary, a sound or light emitting means is used to easily notify that an abnormal current has been detected by the galvanometer. It is important to make it easy to perceive.
〔実施例］
以下、本発明の検知センサを実施例に基づいて説明する
。[Example] Hereinafter, the detection sensor of the present invention will be described based on an example.
第１図及び第２図は本発明の一実施例を示し、低分子量
有機７夜体感知部分である導電性シート１の両ウ：；１
には銅板端イ２、２′がクリンプ止めされ、端子２、２
′にはそれぞれリード線３、３′がハンダ付により接続
されている。本実旭例では絶縁性多孔質フィルムとして
、前例の撥水性フィルムの内、ブレスロン（多孔質ＰＥ
フィルム）５を用い、これの内面に適当な接着剤などに
より補強用ポリエステル不織布６を接合したものによっ
て、導電性シー１・１を覆い、フィルムがリード綿３、
３′に接触する部分を両面粘着テープ７により封止ずる
。これにより、導電性シー１−１は完全密封かかるセン
サを袷油所の給油機内部、特にガソリンなどの低分子量
有機液体の漏れが発生し易い内部配管系に設置し、常時
導電性シー１・１に電流を流しておく。配管系からガソ
リンなどの低分子景有機液体、その蒸気が漏洩して多孔
質フィルＪ、５に付着すると、ガソリン（その華気）な
どはフィルム５及び不織布６を通過してシー１・１に達
し、ガソリンなどの低分子量有機液体、その蟇気と接触
した部分が直ちに膨潤し始め、それに伴って膨潤部分の
電気祇抗が大きくなる。時間経過と共に、電流の流れが
抑制され、この電流変化をリード線に直列接続した検流
４１などで検出する。さらに所望により音や光を発する
ようにしておき、ガソリンなどの漏洩を知覚し易くする
。FIG. 1 and FIG. 2 show an embodiment of the present invention, in which a conductive sheet 1 which is a low molecular weight organic heptamer sensing portion has two parts:;1
The copper plate ends A2, 2' are crimped to the terminals 2, 2'.
Lead wires 3 and 3' are connected to the leads 3 and 3' by soldering, respectively. In this example, we used Breslon (porous PE) as the insulating porous film.
The conductive sheets 1 and 1 are covered with a reinforcing polyester nonwoven fabric 6 bonded to the inner surface of the film with a suitable adhesive, etc., and the film covers the lead cotton 3,
3' is sealed with double-sided adhesive tape 7. As a result, the conductive sheet 1-1 is completely sealed, and such a sensor is installed inside the refueling machine of the oil station, especially in the internal piping system where low molecular weight organic liquids such as gasoline are likely to leak, and the conductive sheet 1-1 is always sealed. Let a current flow through 1. When a low molecular weight organic liquid such as gasoline or its vapor leaks from the piping system and adheres to the porous films J and 5, the gasoline (and its vapor) passes through the film 5 and the nonwoven fabric 6 and enters the sheets 1 and 1. When this happens, the parts that come into contact with low-molecular-weight organic liquids such as gasoline and the gas immediately begin to swell, and the electrical resistance of the swollen parts increases accordingly. As time passes, the flow of current is suppressed, and this current change is detected by a galvanometer 41 connected in series with the lead wire. Furthermore, if desired, it can be made to emit sound or light to make it easier to perceive the leakage of gasoline or the like.
実施例１〜４・比較例１〜２
次に、本発明のセンサが如何に防水性及びガソリンなど
の低分子喰有機液体の透過性に優れ、ひいては検知感度
に優れているかということを実施例及び比較例に基づい
て明確にする。Examples 1 to 4/Comparative Examples 1 to 2 Next, Examples 1 to 4 demonstrate how the sensor of the present invention has excellent waterproof properties and permeability to low molecular weight organic liquids such as gasoline, as well as excellent detection sensitivity. and clarification based on comparative examples.
実施例として、表Ｉに示す如き微細孔数を有する撥水性
多孔質フィルムを用いたセンサ、並びに比較例として、
従来の撥水性フィルムを用いたセンサを用意した。As an example, a sensor using a water-repellent porous film having the number of micropores as shown in Table I, and as a comparative example,
A sensor using a conventional water-repellent film was prepared.
両例共、導電性シートの大きさは肉厚×幅×長さ−０．
５ Ｘ ６ Ｘ ５ ０ ｍｍである。In both cases, the size of the conductive sheet is wall thickness x width x length - 0.
It is 5 x 6 x 50 mm.
実験例１
上記実施例及び比較例のセンサにおいて、センサの片面
だけ（センザの半分程度）をガソリンに浸漬し、時間経
過に対する電気抵抗値を測定し、その結果を表Ｉに示し
た。Experimental Example 1 In the sensors of the above examples and comparative examples, only one side of the sensor (approximately half of the sensor) was immersed in gasoline, and the electrical resistance value over time was measured. The results are shown in Table I.
実験例２
さらに、上記センサを予め室温の水中に１時間浸漬した
後に、実験例１と同様のガソリン浸漬による時間経過に
対する電気抵抗値を測定し、その結果を表Ｈに示した。Experimental Example 2 Furthermore, after the sensor was previously immersed in water at room temperature for 1 hour, the electrical resistance value was measured over time by immersion in gasoline in the same manner as in Experimental Example 1, and the results are shown in Table H.
なお、実験例１、２においてその他の測定条件は同一に
しておいたことはいうまでもない。It goes without saying that other measurement conditions were the same in Experimental Examples 1 and 2.
（以下余白）
〔発明の効果〕
以上説明したように、本発明の低分子量有機液体検知セ
ンサは、１ｃ＋ｔｌ当たり１０’個以上の微細孔を有す
る絶縁性多孔質フィルムで導電性ンーｉ・を被覆してあ
るから、防水性及び低分子量有機液体透過性が極めて高
く、感度が頗る良好である。(The following is a blank space) [Effects of the Invention] As explained above, the low molecular weight organic liquid detection sensor of the present invention covers a conductive layer with an insulating porous film having 10' or more micropores per 1 c+tl. Because of this, it has extremely high waterproof properties and permeability to low molecular weight organic liquids, and has excellent sensitivity.
従って、主に給油機などに設置すればガソリンなどの低
分子量有機液体の微量漏洩でも迅速に検知することがで
きる。Therefore, if it is installed mainly at a fueling machine, even a small amount of leakage of low molecular weight organic liquid such as gasoline can be quickly detected.
第１図は本発明のセンサの一実施例を示す縦断面図、第
２図は第１図に示したセンサの平面図である。
■
２、 ２′
３、 ３′
５FIG. 1 is a longitudinal sectional view showing an embodiment of the sensor of the present invention, and FIG. 2 is a plan view of the sensor shown in FIG. 1. ■ 2, 2' 3, 3' 5
Claims (2)
よるシートの電気抵抗の変化によって検知するセンサで
あって、１ｃｍ＾２当たり１０＾４個以上の微細孔を有
する絶縁性多孔質フィルムで導電性シートを被覆したこ
とを特徴とする低分子量有機液体検知センサ。(1) A sensor that detects the presence of a low molecular weight organic liquid by changes in electrical resistance of the conductive sheet due to swelling of the sheet, and is an insulating porous film having 10^4 or more micropores per cm^2. A low molecular weight organic liquid detection sensor characterized by being coated with a conductive sheet.
からなり、且つショアＡ硬度７０以下で未架橋であるこ
とを特徴とする請求項（１）記載の低分子量有機液体検
知センサ。(2) The low molecular weight organic liquid detection sensor according to claim (1), wherein the conductive sheet is made of a thermoplastic elastomer and carbon, has a Shore A hardness of 70 or less, and is uncrosslinked.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23448389A JPH0396847A (en) | 1989-09-08 | 1989-09-08 | Low molecular weight organic liquid detecting sensor |
| US07/578,700 US5173684A (en) | 1989-09-08 | 1990-09-07 | Low molecular weight organic liquid sensor and detection system using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23448389A JPH0396847A (en) | 1989-09-08 | 1989-09-08 | Low molecular weight organic liquid detecting sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0396847A true JPH0396847A (en) | 1991-04-22 |
Family
ID=16971729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23448389A Pending JPH0396847A (en) | 1989-09-08 | 1989-09-08 | Low molecular weight organic liquid detecting sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0396847A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0598340A1 (en) | 1992-11-17 | 1994-05-25 | Hoechst Aktiengesellschaft | Polymer films for detecting chemical substances |
| JP2005201847A (en) * | 2004-01-19 | 2005-07-28 | Mitsubishi Cable Ind Ltd | Sensor for detecting organic liquid of low-molecular weight |
| WO2008084582A1 (en) * | 2007-01-12 | 2008-07-17 | Nitto Denko Corporation | Substance detection sensor |
-
1989
- 1989-09-08 JP JP23448389A patent/JPH0396847A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0598340A1 (en) | 1992-11-17 | 1994-05-25 | Hoechst Aktiengesellschaft | Polymer films for detecting chemical substances |
| US5665844A (en) * | 1992-11-17 | 1997-09-09 | Hoechst Aktiengesellschaft | Polymer films for detecting chemical substances |
| US5817727A (en) * | 1992-11-17 | 1998-10-06 | Hoechst Aktiengesellschaft | Polymer films for detecting chemical substances |
| JP2005201847A (en) * | 2004-01-19 | 2005-07-28 | Mitsubishi Cable Ind Ltd | Sensor for detecting organic liquid of low-molecular weight |
| WO2008084582A1 (en) * | 2007-01-12 | 2008-07-17 | Nitto Denko Corporation | Substance detection sensor |
| JP2008170321A (en) * | 2007-01-12 | 2008-07-24 | Nitto Denko Corp | Material detection sensor |
| US8252237B2 (en) | 2007-01-12 | 2012-08-28 | Nitto Denko Corporation | Substance detection sensor |
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