JPH0443946A - Method and apparatus for detecting alcohol concentration - Google Patents
Method and apparatus for detecting alcohol concentrationInfo
- Publication number
- JPH0443946A JPH0443946A JP14979390A JP14979390A JPH0443946A JP H0443946 A JPH0443946 A JP H0443946A JP 14979390 A JP14979390 A JP 14979390A JP 14979390 A JP14979390 A JP 14979390A JP H0443946 A JPH0443946 A JP H0443946A
- Authority
- JP
- Japan
- Prior art keywords
- alcohol concentration
- alcohol
- dampening water
- electrode
- sample liquid
- 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
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 25
- 239000000523 sample Substances 0.000 claims description 16
- 239000012488 sample solution Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 30
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 27
- 239000011810 insulating material Substances 0.000 description 5
- 238000007639 printing Methods 0.000 description 4
- 125000003158 alcohol group Chemical group 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は１例えばオフセット印刷機の湿し水中における
イソプロピルアルコール濃度を検出する際に適用するア
ルコール濃度検出方法及び装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an alcohol concentration detection method and apparatus which are applied, for example, to detecting the isopropyl alcohol concentration in dampening water of an offset printing machine.
（従来の技術）
オフセット印刷機では１版面上のインキ、湿し水の反撥
作用を利用して、インキの付着する絵柄部と湿し水が付
着する非絵柄部とを区分けしている。このとき、湿し水
中には、印刷品質を向上するため２通常、イソプロピル
アルコールが５〜１５ｖｏ１％程度添加されている。そ
してこのイソプロピルアルコール濃度が比重瓶により測
定されている。(Prior Art) An offset printing machine utilizes the repellency of ink and dampening water on a printing plate surface to separate a pattern area to which ink adheres and a non-image area to which dampening water adheres. At this time, isopropyl alcohol is usually added to the dampening solution in an amount of about 5 to 15 vol % in order to improve printing quality. This isopropyl alcohol concentration is then measured using a pycnometer.
（発明が解決しようとする課題）
前記のよう乙こイソプロピルアルコール濃度を比重瓶に
より測定する場合には１次の問題がある。(Problems to be Solved by the Invention) When measuring the isopropyl alcohol concentration using a pycnometer as described above, there is the first problem.
即ち。That is.
（ｉ）湿し水は、水温を一定に保った湿し水タンクと印
刷機上に設けた水舟との間をポンプにより循環しており
、湿し水中に微細な気泡が入って。(i) The dampening water is circulated by a pump between a dampening water tank that maintains a constant water temperature and a water cannon installed on the printing press, and minute air bubbles are trapped in the dampening water.
これが比重瓶により測定する場合、誤差として表れる。This appears as an error when measuring with a pycnometer.
（ｉｉ ）湿し水には、インキや紙粉等が混入して。(ii) Ink, paper powder, etc. are mixed into the dampening water.
これらが比重瓶により測定する場合、誤差として表れる
。When these are measured using a pycnometer, they appear as errors.
これらの問題を解決するために、湿し水を所定の容器内
へ導き、同容器内気相部のイソプロピルアルコール濃度
を接触燃焼式ガスセンサー、半導体センサー、赤外線吸
収センサー、熱伝達式センサー等により測定するアルコ
ール濃度検出方法が既に提案されている（必要ならば特
開昭６２−１２５４１３号公報を参照されたい）。To solve these problems, dampening water is introduced into a designated container, and the concentration of isopropyl alcohol in the gas phase inside the container is measured using a catalytic combustion gas sensor, semiconductor sensor, infrared absorption sensor, heat transfer sensor, etc. An alcohol concentration detection method has already been proposed (if necessary, please refer to Japanese Patent Application Laid-Open No. 125413/1983).
しかしこのアルコール濃度検出方法は、■応答遅れがあ
る。■気相濃度を液相濃度へ換算する必要がある。等の
問題があって、アルコール濃度を迅速に、簡便に測定で
きないという欠点があった。However, this method of detecting alcohol concentration has (1) a delay in response. ■It is necessary to convert the gas phase concentration to liquid phase concentration. There were problems such as that alcohol concentration could not be measured quickly and easily.
本発明は前記の問題点に鑑み提案するものであり、その
目的とする処は、アルコール濃度を迅速に、簡便に、高
精度に検出できるアルコール濃度検出方法及び装置を提
供しようとする点にある。The present invention has been proposed in view of the above-mentioned problems, and its purpose is to provide an alcohol concentration detection method and device that can detect alcohol concentration quickly, simply, and with high precision. .
（課題を解決するための手段）
上記の目的を達成するために９本発明のアルコール濃度
検出方法は、内外電極間にアルコール含有試料液を注入
した後、同内外電極間に高周波電圧を印加し、同内外電
極間のインピーダンスを計測して、同インピーダンスか
らアルコール濃度を求めることを特徴としている。(Means for Solving the Problems) In order to achieve the above objects, the alcohol concentration detection method of the present invention involves injecting an alcohol-containing sample solution between the inner and outer electrodes, and then applying a high frequency voltage between the inner and outer electrodes. The feature is that the impedance between the inner and outer electrodes is measured and the alcohol concentration is determined from the impedance.
また本発明のアルコール濃度検出装置は５円筒状外部電
極と、同円筒状外部電極内に同心状に配設した円柱状内
部電極とを有し、上記円筒状外部電極の内面に絶縁層を
形成し、同円筒状外部電極の一端部側に試料液注入口を
、他端部側に試料液排出口を、それぞれ設け、上記円柱
状内部電極の外面に絶縁層を形成し、これら内外電極の
上部間及び底部間を絶縁材により密封するとともに、こ
れら内外電極を高周波電源に接続している。Further, the alcohol concentration detection device of the present invention has five cylindrical external electrodes and a cylindrical internal electrode arranged concentrically within the cylindrical external electrode, and an insulating layer is formed on the inner surface of the cylindrical external electrode. A sample liquid inlet is provided at one end of the cylindrical outer electrode, and a sample liquid outlet is provided at the other end, an insulating layer is formed on the outer surface of the cylindrical inner electrode, and the inner and outer electrodes are The upper and lower parts are sealed with an insulating material, and these inner and outer electrodes are connected to a high frequency power source.
（作用）
本発明のアルコール濃度検出方法及び装置は前記のよう
に構成されており、内外電極間にアルコール含有試料液
を注入した後１間内外電極間に高周波電圧を印加し、同
内外電極間のインピーダンスを計測して、同インピーダ
ンスからアルコール濃度を求める。(Function) The alcohol concentration detection method and device of the present invention are configured as described above, and after injecting an alcohol-containing sample solution between the inner and outer electrodes, a high-frequency voltage is applied between the inner and outer electrodes for one period, and a high-frequency voltage is applied between the inner and outer electrodes. Measure the impedance of the alcohol and determine the alcohol concentration from the impedance.
（実施例）
次に本発明のアルコール濃度検出方法及び装置を第１図
乃至第４図に示す一実施例により説明すると、第１，２
図の（１）が円柱状内部電極、（２）が円筒状外部電極
で、上記円柱状内部電極（１）が上記円筒状外部電極（
２）内に同心状に配設されている。また（３） （３）
が上記円柱状内部電極（１）の外面及び上記円筒状外部
電極（２）の内面番こ形成した絶縁層、（４）が上記円
柱状内部電極（１）及び上記円筒状外部電極（２）の上
部間を密閉した絶縁材、（５）がこれら円柱状内部電極
（１）及び円筒状外部電極（２）の下部間を密閉した絶
縁材、（６）が上記円筒状外部電極（２）の一端部（下
端部）側に設けた試料液注入口、（７）が上記円筒状外
部電極（２）の他端部（上端部）側に設けた試料液排出
口で、上記円柱状内部電極（１）及び上記円筒状外部電
極（２）を第３図に示す試料に接続して、高周波電圧を
印加する。第４図は、アルコール濃度検出系を示してい
る。同第４図において、 （１０）が湿し水タンク。(Example) Next, the alcohol concentration detection method and apparatus of the present invention will be explained using an example shown in FIGS. 1 to 4.
In the figure, (1) is a cylindrical internal electrode, (2) is a cylindrical external electrode, and the cylindrical internal electrode (1) is the cylindrical external electrode (
2) are arranged concentrically within the Also (3) (3)
is an insulating layer formed on the outer surface of the cylindrical internal electrode (1) and the inner surface of the cylindrical external electrode (2), and (4) is the cylindrical internal electrode (1) and the cylindrical external electrode (2). (5) is an insulating material that seals between the upper parts of the cylindrical internal electrode (1) and the cylindrical external electrode (2); (6) is the insulating material that seals the lower part of the cylindrical internal electrode (1) and the cylindrical external electrode (2); (7) is a sample liquid inlet provided at one end (lower end) side, and (7) is a sample liquid outlet provided at the other end (upper end) side of the cylindrical external electrode (2). The electrode (1) and the cylindrical external electrode (2) are connected to the sample shown in FIG. 3, and a high frequency voltage is applied. FIG. 4 shows the alcohol concentration detection system. In Figure 4, (10) is the dampening water tank.
（１１）が循環ポンプ、 （１２）が印刷機上に設けた
水舟（１３）がイソプロピルアルコールの補給系、（１
４） 力水の補給系、 （１５）がフィルター、 （１
６）が上記第１゜２図に示す本発明のアルコール濃度検
出装置（誘電計）で、同アルコール濃度検出装置（１６
）が上記のように構成されている。そしてこのアルコー
ル濃度検出装置（１６）が循環ポンプ（１１）と水舟（
１２）との間の湿し水供給系の並列枝路に介装されてい
る。(11) is the circulation pump, (12) is the water boat (13) installed on the printing press, is the isopropyl alcohol supply system, (1
4) Power water supply system, (15) is the filter, (1
6) is the alcohol concentration detection device (dielectric meter) of the present invention shown in FIG.
) is configured as above. This alcohol concentration detection device (16) is connected to the circulation pump (11) and Mizifune (
12) is interposed in a parallel branch of the dampening water supply system.
また（１７）が上記イソプロピルアルコールのｍ給糸（
１３）に設けた弁である。In addition, (17) is the above isopropyl alcohol m-fed yarn (
13).
次に前記第１図乃至第４図に示すアルコール濃度検出装
置の作用を具体的に説明する。湿し水タンク（１０）内
の湿し水を循環ポンプ（１１）→水舟（１２）→湿し水
タンク（１０）に循環させる。Next, the operation of the alcohol concentration detection device shown in FIGS. 1 to 4 will be explained in detail. The dampening water in the dampening water tank (10) is circulated from the circulation pump (11) to the water boat (12) to the dampening water tank (10).
また湿し水（試料＝アルコール含有試料液）のアルコー
ル濃度検出時には、循環ポンプ（１１）を吐出した湿し
水の一部をフィルター（１５）→アルコール濃度検出装
置（１６）の試料液注入口（６）→円柱状内部電極（１
）及び円筒状外部電極（２）の間へ注入して９円柱状内
部電極（１）及び上記円筒状外部電極（２）に高周波電
圧を印加する。なおこのときの高周波電圧の周波数とし
ては測定データの安定性から１０〜１００ＯＫＨ２が好
ましい。そして可変コンデンサ（Ｃ，）と可変抵抗（Ｒ
８）とを調整し。In addition, when detecting the alcohol concentration of dampening water (sample = alcohol-containing sample liquid), a part of the dampening water discharged from the circulation pump (11) is transferred to the filter (15) → the sample liquid inlet of the alcohol concentration detection device (16). (6) → Cylindrical internal electrode (1
) and the cylindrical external electrode (2), and a high frequency voltage is applied to the cylindrical internal electrode (1) and the cylindrical external electrode (2). Note that the frequency of the high-frequency voltage at this time is preferably 10 to 100 OKH2 from the viewpoint of stability of measurement data. Then, a variable capacitor (C,) and a variable resistor (R
8) Adjust.
Ａ、８間の電位が等しくなって零点を示す状態のＣ１を
測定して９次式により湿し水（試料＝アルコール含有試
料液）の電気容量Ｃを計算する。Measure C1 in a state where the potentials between A and 8 are equal and indicate a zero point, and calculate the capacitance C of the dampening water (sample = alcohol-containing sample liquid) using the 9th equation.
Ｒ。R.
こうして得たＣにより誘電率εを次式により求める。Using C thus obtained, the dielectric constant ε is determined by the following equation.
但しＣ０は両電極間が空気層のときの値である。However, C0 is a value when there is an air layer between both electrodes.
湿し水とそれに添加されているイソプロピルアルコール
との誘電率は、温度２５℃で、水＝１９゜９、アルコー
ル＝７８．３と大きく異なるため。This is because the dielectric constants of dampening water and isopropyl alcohol added to it are significantly different at a temperature of 25°C, as water = 19°9 and alcohol = 78.3.
アルコール濃度で誘電率が変化することになる。The dielectric constant changes depending on the alcohol concentration.
アルコール濃度 誘電率
Ｏｗｔ％ ７８．３
５ ７５．３
１０ ７２．４
１５ ６９．５
２０ ６６．６
従って誘電率を測定することにより、アルコール濃度を
検出することが可能で、アルコール濃度検出信号を得ら
れる。このアルコール濃度検出信号をアルコール濃度検
出装置（１６）→イソプロピルアルコールの補給系（１
３）に設けた弁（１７）へ送り、開弁（１７）を開閉制
御して、湿し水のアルコール濃度を一定に保持する。Alcohol concentration Dielectric constant Owt% 78.3 5 75.3 10 72.4 15 69.5 20 66.6 Therefore, by measuring the dielectric constant, alcohol concentration can be detected and an alcohol concentration detection signal can be obtained. It will be done. This alcohol concentration detection signal is sent from the alcohol concentration detection device (16) to the isopropyl alcohol supply system (1
3), and the alcohol concentration of the dampening water is maintained constant by controlling the opening and closing of the valve (17).
（発明の効果）
本発明のアルコール濃度検出方法は前記のように内外電
極間にアルコール含有試料液を注入した後、同内外電極
間に高周波電圧を印加し、同内外電極間のインピーダン
スを計測して、同インピーダンスからアルコール濃度を
求めるので、アルコール濃度を迅速に、簡便に、検出で
きる。また検出系の上流側で気泡、インキ、紙粉等を除
去することが可能で、アルコール濃度を高精度に検出で
きる。(Effects of the Invention) The alcohol concentration detection method of the present invention involves injecting an alcohol-containing sample solution between the inner and outer electrodes as described above, applying a high frequency voltage between the inner and outer electrodes, and measuring the impedance between the inner and outer electrodes. Since the alcohol concentration is determined from the same impedance, the alcohol concentration can be detected quickly and easily. In addition, it is possible to remove air bubbles, ink, paper dust, etc. on the upstream side of the detection system, and alcohol concentration can be detected with high accuracy.
また本発明のアルコール濃度検出方法装置は前記のよう
に円筒状外部電極と、同円筒状外部電極内に同心状に配
設した円柱状内部電極とを有し。Further, the alcohol concentration detection method and device of the present invention has a cylindrical external electrode and a cylindrical internal electrode concentrically disposed within the cylindrical external electrode as described above.
上記円筒状外部電極の内面に絶縁層を形成し、同円筒状
外部電極の一端部側に試料液注入口を、他端部側に試料
液排出口を、それぞれ設け、上記円柱状内部電極の外面
に絶縁層を形成し、これら内外電極の上部間及び底部間
を絶縁材により密封するとともに、これら内外電極を高
周波電源に接続しており、前記アルコール濃度検出方法
を円滑に実施できる効果がある。An insulating layer is formed on the inner surface of the cylindrical external electrode, a sample liquid inlet is provided at one end of the cylindrical external electrode, and a sample liquid outlet is provided at the other end of the cylindrical internal electrode. An insulating layer is formed on the outer surface, and the upper and lower parts of these inner and outer electrodes are sealed with an insulating material, and these inner and outer electrodes are connected to a high frequency power source, which has the effect of smoothly carrying out the alcohol concentration detection method. .
第１図は本発明に係わるアルコール濃度検出方法の実施
に使用する装置の構成例を示す縦断側面図、第２図は第
１図の矢視■−■線に沿う横断平面図、第３図はアルコ
ール濃度検出装置の電気回路図、第４図はアルコール濃
度検出系の系統図である。
（１）・・・円柱状内部型ｉ、（２）・・・円筒状外部
電極、（３）・・・絶縁層、 （４） （５） ・・
・絶縁材、（６）・試料液注入口、（７）・・・試料液
排出口。
（１６）・・・アルコール濃度検出装置。FIG. 1 is a vertical cross-sectional side view showing an example of the configuration of an apparatus used to implement the alcohol concentration detection method according to the present invention, FIG. 2 is a cross-sectional plan view taken along the line ■-■ in FIG. 1, and FIG. 4 is an electric circuit diagram of the alcohol concentration detection device, and FIG. 4 is a system diagram of the alcohol concentration detection system. (1)...Cylindrical internal mold i, (2)...Cylindrical external electrode, (3)...Insulating layer, (4) (5)...
- Insulating material, (6) - Sample liquid inlet, (7)... Sample liquid outlet. (16)...Alcohol concentration detection device.
Claims (2)
、同内外電極間に高周波電圧を印加し、同内外電極間の
インピーダンスを計測して、同インピーダンスからアル
コール濃度を求めることを特徴としたアルコール濃度検
出方法。(1) After injecting an alcohol-containing sample solution between the inner and outer electrodes, a high frequency voltage is applied between the inner and outer electrodes, the impedance between the inner and outer electrodes is measured, and the alcohol concentration is determined from the impedance. Alcohol concentration detection method.
に配設した円柱状内部電極とを有し、上記円筒状外部電
極の内面に絶縁層を形成し、同円筒状外部電極の一端部
側に試料液注入口を、他端部側に試料液排出口を、それ
ぞれ設け、上記円柱状内部電極の外面に絶縁層を形成し
、これら内外電極の上部間及び底部間を絶縁材により密
封するとともに、これら内外電極を高周波電源に接続し
たことを特徴とするアルコール濃度検出装置。(2) It has a cylindrical external electrode and a cylindrical internal electrode arranged concentrically within the cylindrical external electrode, and an insulating layer is formed on the inner surface of the cylindrical external electrode, and the cylindrical external electrode A sample liquid inlet is provided at one end and a sample liquid outlet is provided at the other end, and an insulating layer is formed on the outer surface of the cylindrical internal electrode to insulate between the top and bottom of these inner and outer electrodes. An alcohol concentration detection device characterized by being sealed with a material and having these inner and outer electrodes connected to a high frequency power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14979390A JPH0443946A (en) | 1990-06-11 | 1990-06-11 | Method and apparatus for detecting alcohol concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14979390A JPH0443946A (en) | 1990-06-11 | 1990-06-11 | Method and apparatus for detecting alcohol concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0443946A true JPH0443946A (en) | 1992-02-13 |
Family
ID=15482841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14979390A Pending JPH0443946A (en) | 1990-06-11 | 1990-06-11 | Method and apparatus for detecting alcohol concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0443946A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001013451A1 (en) * | 1999-08-16 | 2001-02-22 | Siemens Aktiengesellschaft | Determination of the fuel concentration in the electrolyte of fuel cells that are operated with liquid fuel |
| WO2014112227A1 (en) * | 2013-01-18 | 2014-07-24 | ソニー株式会社 | Electrical characteristic measurement device |
| JP2015145845A (en) * | 2014-02-04 | 2015-08-13 | 愛三工業株式会社 | liquid sensor |
-
1990
- 1990-06-11 JP JP14979390A patent/JPH0443946A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001013451A1 (en) * | 1999-08-16 | 2001-02-22 | Siemens Aktiengesellschaft | Determination of the fuel concentration in the electrolyte of fuel cells that are operated with liquid fuel |
| WO2014112227A1 (en) * | 2013-01-18 | 2014-07-24 | ソニー株式会社 | Electrical characteristic measurement device |
| CN104919309A (en) * | 2013-01-18 | 2015-09-16 | 索尼公司 | Electrical characteristic measurement device |
| JP2015145845A (en) * | 2014-02-04 | 2015-08-13 | 愛三工業株式会社 | liquid sensor |
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