JPH0242191B2 - - Google Patents
Info
- Publication number
- JPH0242191B2 JPH0242191B2 JP57118530A JP11853082A JPH0242191B2 JP H0242191 B2 JPH0242191 B2 JP H0242191B2 JP 57118530 A JP57118530 A JP 57118530A JP 11853082 A JP11853082 A JP 11853082A JP H0242191 B2 JPH0242191 B2 JP H0242191B2
- Authority
- JP
- Japan
- Prior art keywords
- dew condensation
- organic polymer
- condensation sensor
- cellulose
- counter electrode
- 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 - Lifetime
Links
- 238000009833 condensation Methods 0.000 claims description 35
- 230000005494 condensation Effects 0.000 claims description 35
- 229920000620 organic polymer Polymers 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 8
- 150000004706 metal oxides Chemical class 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 5
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 239000007822 coupling agent Substances 0.000 claims description 3
- 239000002952 polymeric resin Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 16
- 239000001856 Ethyl cellulose Substances 0.000 description 7
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 7
- 229920001249 ethyl cellulose Polymers 0.000 description 7
- 235000019325 ethyl cellulose Nutrition 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 239000004593 Epoxy Substances 0.000 description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 229910000077 silane Inorganic materials 0.000 description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 229940088601 alpha-terpineol Drugs 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WUOACPNHFRMFPN-SECBINFHSA-N (S)-(-)-alpha-terpineol Chemical compound CC1=CC[C@@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-SECBINFHSA-N 0.000 description 1
- -1 AI 2 O 3 Inorganic materials 0.000 description 1
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910019899 RuO Inorganic materials 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- OVKDFILSBMEKLT-UHFFFAOYSA-N alpha-Terpineol Natural products CC(=C)C1(O)CCC(C)=CC1 OVKDFILSBMEKLT-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth 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 Fluid Adsorption Or Reactions (AREA)
- Non-Adjustable Resistors (AREA)
Description
本発明は、水分の付着すなわち結露状態を電気
抵抗の変化として検出する結露センサに関するも
のである。
従来知られている結露検出方法は、(1)光の反射
量や水の吸収スペクトルで検出する光学的方法、
(2)圧電共振子の共振周波数の変化やＱの低下で検
出する方法、(3)容量の変化で検出する方法、(4)電
気抵抗の変化で検出する方法などがある。これら
の方法のうち、上記(1)の方法は高精度な光学系が
必要で持ち運びがしにくく、しかも高価格なた
め、一般の民生用製品への適用はできないという
欠点があり、上記(2)、(3)の方法は検出電気回路が
複雑となる欠点があり、上記(4)の電気抵抗の変化
で検出する方法は検出回路が比較的単純で最も好
ましいものと考えられる。
従来、電気抵抗の変化で検出する方法には、検
出回路の電源により、交流式と直流式の二法があ
る。交流式の結露センサとしては、その感湿膜に
塩化物やリン酸塩などの電解質を用いることが知
られている。しかし、このような結露センサを、
特に小型軽量が要求される製品（例えばポータブ
ル型VTR）に適用する場合には直流式に比べて
回路上複雑なため、不利である。
直流式結露センサは、感湿膜に、(a)有機高分子
と導体粉末、(b)半導体粉末、(c)絶縁体粉末などが
用いられている。これら感湿膜は、有機高分子中
に粉末が分散している状態あるいは有機高分子と
粉体とが混合している状態となつている。すなわ
ち、感湿膜に実質的に有機高分子が存在してい
る。このため結露検出の応答速度が遅い、結露検
出状態が安定に保持されにくいなどの欠点があ
る。
VTRのシリンダは、温度などの急激な変化に
対し結露しやすい部位であり、またシリンダに結
露するとテープの巻き込みなどの障害が起こるの
で結露状態を速やかに検知すること、さらにはシ
リンダの結露が除去されるまで長く結露状態を検
知することが要求される。しかし、従来の結露セ
ンサでは、これらの要求を十分に満たすことは難
しい。
本発明の目的は、上記した従来技術の欠点をな
くし、結露状態を速やかに検知し、さらには結露
状態を安定に長く検知し、しかも耐久性の優れた
結露センサを提供するにある。
上記の点にかんがみ直流式結露センサの構成要
素を考擦し、さらに実験的検討を重ねた結果、本
発明の結露センサを得た。
すなわち、本発明の結露センサは、対向電極を
覆う感湿部が絶縁性の有機高分子を含まない多孔
質金属酸化物からなり、さらにこの金属酸化物感
湿材を被覆するように、エポキシシラン、アミノ
シランなどのカツプリング剤を添加したセルロー
ス系有機高分子膜を形成したものである。
次に本発明の結露センサの作成法を説明する。
対向電極には、例えばAu、Pt、Pdなどの金属線
や金属板、セラミツクスなどの絶縁基板上にAu、
Pt、Pd、RuO2などの導電ペーストをスクリーン
印刷し、焼成して形成したものが用いられる。対
向電極の形状は、直線状、曲線状、らせん状、く
し歯状など種々用いられる。また対向電極の電極
間隔は通常0.3〜1.0mmであり電極長さは通常５〜
50mmである。
この対向電極間を覆うように形成する絶縁性の
多孔質金属酸化物としては、TiO2、AI2O3、
SiO2、ZrO2、BaTiO3、SrTiO3などが用いられ
る。また、これらの酸化物にNiO、ZnO、MnO2
などの半導体酸化物、RuO2などの導体酸化物を
少量添加した酸化物も絶縁性があれば用いられ
る。
これらの酸化物は、上記対向電極間を覆うよう
に成形し、通常20〜60％の気孔率となる条件で焼
成し、多孔質金属酸化物からなる感湿部を形成す
る。
次に、セルロース系有機高分子樹脂を酢酸エチ
ル、α−テルピネオールなどの溶媒に適量溶解さ
せた溶液に、エポキシシラン、アミノシランなど
のカツプリング剤を添加したものを、上記多孔質
金属酸化物に塗布後乾燥し、セルロース系有機高
分子膜を形成する。
塗布の方法は通常、デイツプ法、スプレー法、
回転塗布法などが用いられる。有機高分子被覆の
厚さは、通常0.05〜2μｍが適当である。
なお、金属酸化物の気孔率が20％未満の時と、
60％を越える時には、結露状態を速やかに検知す
ることがしにくいことが実験によりわかつた。
以下、本発明を実施例により説明する。
実施例 １
第１図、第２図に示すように、15×15×0.8mm
の大きさのアルミナ基板１にAuとガラスフリツ
トを含む導体ペーストを印刷・焼成して、長さ30
mm、線幅0.5mm、電極間隔0.5mmの対向電極２を形
成した。この対向電極間を覆うように、BaTiO3
と有機ビヒクルからなるペーストを印刷した後、
750℃の温度で焼成し、約40％の気孔率をもつBa
−TiO3焼結体層３を形成した。BaTiO3ペースト
中には、焼結を促進するため、Bi2O3−B2O3−
SiO2系ガラスを５〜30wt％添加した。有機ビヒ
クルにはα−テルビネオールにエチルセルロース
を5wt％溶解したものを用いた。750℃の温度で
焼成した結果、BaTiO3焼結体層中には、有機成
分は存在していなかつた。なおBaTiO3層の厚さ
は約60μｍであつた。このBaTiO3からなる感湿
部に、エポキシシランを添加したエチルセルロー
ス−α−テルピネオール溶液を回転塗布機で塗布
した後、130℃で30分間乾燥し、エポキシシラン
を添加したエチルセルロースの被覆膜４を形成し
た。なおエポキシシランのエチルセルロースに対
する添加量は２重量％とした。また、上記エチル
セルロース−α−テルピネオール溶液をガラス板
に同一条件で塗布し、形成されたエチルセルロー
ス被覆膜の厚さを通常の触針法で測定した結果、
0.3μｍであつた。作成した結露センサ試料の諸特
性を第１表に示した。第１表には比較のためエポ
キシシランを添加しないものも示した。結露応答
時間は結露センサを０℃に冷却した後、25℃、75
％RHに保つた恒温恒湿槽内に入れた時点から、
結露センサの抵抗が2MΩ以下に低下するのに要
する時間である。結露保持時間は上記恒温恒湿槽
内に入れた結露センサの抵抗が2MΩ以下である
時間である。スイツチング特性は25℃95％RH時
の抵抗と結露時の抵抗との比である。また耐久試
験として、測定試料に500KΩの抵抗を直列接続
し、かつDC12Vの電圧を印加しながら、水中に
１時間保持し、その後空気中（20℃、75％RH）
に１時間保持することを100サイクル行ない、各
サイクル毎の諸特性を測定した。第１表からわか
るように、エチルセルロースにエポキシシランを
添加したものは、結露センサとしての優れた特性
をもつとともに前記耐久試験に対して非常に安定
になつた。
実施例 ２
実施例１と同様にして、BaTiO3からなる感湿
部に、アミノシランを添加したエチルセルロース
被覆膜を形成した結露センサに測定試料を作成し
た。試料を実施例１と同様にして測定した諸特性
を第１表に追加して示した。第１表からわかるよ
うに、エチルセルロースにアミノシランを添加し
たものは、結露センサとしての優れた特性をもつ
とともに、前記耐久試験に対して非常に安定にな
つた。
The present invention relates to a dew condensation sensor that detects adhesion of moisture, that is, dew condensation, as a change in electrical resistance. Conventionally known dew condensation detection methods include (1) an optical method that detects the amount of light reflected or the absorption spectrum of water;
(2) A method of detecting by a change in the resonant frequency of a piezoelectric resonator or a decrease in Q, (3) a method of detecting by a change in capacitance, and (4) a method of detecting by a change in electrical resistance. Among these methods, method (1) above requires a high-precision optical system, is difficult to carry, and is expensive, so it cannot be applied to general consumer products. ) and (3) have the disadvantage that the detection electric circuit is complicated, whereas the above method (4), which detects by a change in electrical resistance, has a relatively simple detection circuit and is considered to be the most preferable method. Conventionally, there are two methods for detecting changes in electrical resistance: an alternating current method and a direct current method, depending on the power source of the detection circuit. It is known that an AC type dew condensation sensor uses an electrolyte such as chloride or phosphate in its moisture sensitive membrane. However, such a dew condensation sensor
This is particularly disadvantageous when applied to products that require small size and light weight (for example, portable VTRs) because the circuit is more complex than the DC type. DC dew condensation sensors use (a) organic polymer and conductor powder, (b) semiconductor powder, (c) insulator powder, etc. in the moisture-sensitive film. These moisture-sensitive films are in a state in which powder is dispersed in an organic polymer, or in a state in which an organic polymer and powder are mixed. That is, the organic polymer substantially exists in the moisture sensitive film. For this reason, there are drawbacks such as slow response speed for dew condensation detection and difficulty in maintaining a stable dew condensation detection state. VTR cylinders are prone to condensation due to sudden changes in temperature, etc. Condensation on the cylinder can cause problems such as tape getting caught, so it is important to quickly detect condensation and remove condensation from the cylinder. It is required to detect dew condensation for a long time until the dew condition is detected. However, it is difficult for conventional dew condensation sensors to fully satisfy these requirements. SUMMARY OF THE INVENTION An object of the present invention is to provide a dew condensation sensor that eliminates the above-mentioned drawbacks of the prior art, quickly detects dew condensation, stably detects dew condensation for a long time, and has excellent durability. In view of the above points, the constituent elements of a DC type dew condensation sensor were considered, and as a result of further experimental studies, the dew condensation sensor of the present invention was obtained. That is, in the dew condensation sensor of the present invention, the moisture sensing portion covering the counter electrode is made of a porous metal oxide that does not contain an insulating organic polymer, and further, the moisture sensing portion of the present invention is made of an epoxy silane to cover the metal oxide moisture sensitive material. , a cellulose-based organic polymer film to which a coupling agent such as aminosilane is added. Next, a method for producing the dew condensation sensor of the present invention will be explained.
The counter electrode is made of a metal wire or plate made of Au, Pt, or Pd, or an insulating substrate made of ceramic.
A material formed by screen printing a conductive paste such as Pt, Pd, RuO 2, etc. and firing it is used. The counter electrode may have various shapes, such as a straight line, a curve, a spiral, and a comb-like shape. In addition, the electrode spacing of the opposing electrodes is usually 0.3 to 1.0 mm, and the electrode length is usually 5 to 1.0 mm.
It is 50mm. The insulating porous metal oxide formed to cover the space between the opposing electrodes includes TiO 2 , AI 2 O 3 ,
SiO 2 , ZrO 2 , BaTiO 3 , SrTiO 3 and the like are used. In addition, these oxides include NiO, ZnO, MnO 2
Semiconductor oxides such as oxides, and oxides to which a small amount of conductive oxides such as RuO 2 are added can also be used if they have insulating properties. These oxides are formed so as to cover the space between the opposing electrodes, and fired under conditions that give a porosity of usually 20 to 60%, thereby forming a moisture sensitive part made of a porous metal oxide. Next, a solution prepared by dissolving an appropriate amount of cellulose-based organic polymer resin in a solvent such as ethyl acetate or α-terpineol and adding a coupling agent such as epoxysilane or aminosilane is applied to the porous metal oxide. Dry to form a cellulose-based organic polymer film. Application methods are usually dip method, spray method,
A spin coating method or the like is used. The appropriate thickness of the organic polymer coating is usually 0.05 to 2 μm. In addition, when the porosity of the metal oxide is less than 20%,
Experiments have shown that it is difficult to quickly detect dew condensation when it exceeds 60%. The present invention will be explained below using examples. Example 1 As shown in Figures 1 and 2, 15 x 15 x 0.8 mm
A conductive paste containing Au and glass frit is printed and fired on an alumina substrate 1 with a length of 30 mm.
A counter electrode 2 was formed with a width of 0.5 mm, a line width of 0.5 mm, and an electrode spacing of 0.5 mm. BaTiO 3 is applied to cover the space between these opposing electrodes.
After printing a paste consisting of and an organic vehicle,
Ba is fired at a temperature of 750℃ and has a porosity of approximately 40%.
-TiO 3 sintered body layer 3 was formed. BaTiO 3 paste contains Bi 2 O 3 −B 2 O 3 − to promote sintering.
5 to 30 wt% of SiO 2 glass was added. The organic vehicle used was 5 wt % ethyl cellulose dissolved in α-tervineol. As a result of firing at a temperature of 750°C, no organic components were present in the BaTiO 3 sintered body layer. Note that the thickness of the three BaTiO layers was approximately 60 μm. After applying an ethyl cellulose-α-terpineol solution containing epoxy silane to the moisture sensitive part made of BaTiO 3 using a spin coating machine, it was dried at 130°C for 30 minutes, and a coating film 4 of ethyl cellulose containing epoxy silane was applied. Formed. The amount of epoxysilane added to ethyl cellulose was 2% by weight. In addition, the above ethylcellulose-α-terpineol solution was applied to a glass plate under the same conditions, and the thickness of the formed ethylcellulose coating film was measured using the usual stylus method.
It was 0.3 μm. Table 1 shows the characteristics of the prepared dew sensor sample. For comparison, Table 1 also shows samples to which no epoxy silane was added. Condensation response time is 25℃, 75℃ after cooling the condensation sensor to 0℃.
From the moment it is placed in a constant temperature and humidity chamber maintained at %RH,
This is the time required for the resistance of the dew condensation sensor to drop below 2MΩ. The dew condensation retention time is the time during which the resistance of the dew condensation sensor placed in the constant temperature and humidity chamber is 2 MΩ or less. Switching characteristics are the ratio of resistance at 25°C and 95%RH to resistance when condensing. In addition, as a durability test, a 500KΩ resistor was connected in series to the measurement sample, and the sample was kept in water for 1 hour while applying a voltage of DC12V, and then placed in air (20℃, 75%RH).
The sample was held for 1 hour for 100 cycles, and various characteristics were measured for each cycle. As can be seen from Table 1, ethyl cellulose to which epoxy silane was added had excellent characteristics as a dew condensation sensor and was extremely stable in the durability test. Example 2 In the same manner as in Example 1, a measurement sample was prepared in a dew condensation sensor in which an ethylcellulose coating film to which aminosilane was added was formed on the moisture sensitive part made of BaTiO 3 . Various properties of the sample measured in the same manner as in Example 1 are additionally shown in Table 1. As can be seen from Table 1, ethylcellulose to which aminosilane was added had excellent characteristics as a dew condensation sensor and was extremely stable in the durability test.
【表】
以上述べたように、本発明によれば、結露状態
を速やかに検知し、さらには結露状態を安定に長
く検知し、しかも非常に耐久性の優れた結露セン
サが得られる。[Table] As described above, according to the present invention, it is possible to obtain a dew condensation sensor that quickly detects a dew condensation state, stably detects a dew condensation state for a long time, and has extremely high durability.
第１図は本発明による結露センサの一実施例を
示す平面図、第２図は第１図のＡ−Ａ線矢視断面
図である。
１……アルミナ基板、２……対向電極、３……
金属酸化物焼結体、４……有機高分子被覆膜。
FIG. 1 is a plan view showing an embodiment of a dew condensation sensor according to the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1...Alumina substrate, 2...Counter electrode, 3...
Metal oxide sintered body, 4...Organic polymer coating film.
Claims (1)
の対向電極間と対向電極が絶縁性気孔質金属酸化
物で覆われるように形成された感湿部、この感湿
部が覆われるように形成されたセルロース系有機
高分子被覆膜よりなる結露センサにおいて、セル
ロース系有機高分子樹脂に、エポキシシラン、ア
ミノシランなどのカツプリング剤を添加したこと
を特徴とする結露センサ。1. A substrate, a counter electrode formed on the substrate, a moisture sensing section formed so that the gap between the counter electrodes and the counter electrode are covered with an insulating porous metal oxide, and a moisture sensing section formed so as to cover the humidity sensing section. A dew condensation sensor made of a cellulose-based organic polymer coating film, characterized in that a coupling agent such as epoxysilane or aminosilane is added to a cellulose-based organic polymer resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57118530A JPS5910843A (en) | 1982-07-09 | 1982-07-09 | condensation sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57118530A JPS5910843A (en) | 1982-07-09 | 1982-07-09 | condensation sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5910843A JPS5910843A (en) | 1984-01-20 |
| JPH0242191B2 true JPH0242191B2 (en) | 1990-09-20 |
Family
ID=14738874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57118530A Granted JPS5910843A (en) | 1982-07-09 | 1982-07-09 | condensation sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910843A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065319A (en) * | 1996-09-11 | 2000-05-23 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Rolling mill with laterally different velocities |
| JP5261896B2 (en) * | 2006-07-27 | 2013-08-14 | ダイキン工業株式会社 | Coating composition |
-
1982
- 1982-07-09 JP JP57118530A patent/JPS5910843A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5910843A (en) | 1984-01-20 |
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