公开(公告)号：JPH06174690A

公开(公告)日：1994-06-24

申请号：JP35097892

申请日：1992-12-04

Applicant: TOA ELECTRONICS ,  TOTO LTD

Inventor： KATO AKIHIKO ,  YAMASATO MASAHARU ,  YANAGIDA YOSHINORI ,  MATSUNO TAKANORI ,  OTANI TAKAYUKI

IPC: G01N27/30 ,  G01N27/416

Abstract: PURPOSE:To provide a method of always stably measuring pH of an electrolytic acid solution by utilizing a metallic oxide pH electrode which is easily used in a hospital, farm, home or the like. CONSTITUTION:A metallic oxide pH electrode is immersed in a water containing residual chlorine until a voltage relative to an electrolytic acid solution with prescribed pH becomes stable. After that, a voltage obtained from the electrolytic acid solution with prescribed pH by means of the metallic oxide pH electrode is regarded as a prescribed pH, thereby the method of measuring pH of the electrolytic acid solution can be attained.

公开(公告)号：JPH06109696A

公开(公告)日：1994-04-22

申请号：JP28530792

申请日：1992-09-30

Applicant: TOA ELECTRONICS ,  TOTO LTD

Inventor： KATO AKIHIKO ,  YAMASATO MASAHARU ,  YANAGIDA YOSHINORI ,  MATSUNO TAKANORI ,  OTANI TAKAYUKI

IPC: G01N27/26 ,  C02F1/46 ,  G01N27/40 ,  G01N27/416

Abstract: PURPOSE:To obtain a method and device for easily measuring the pH of electrolytic acid water at a manufacturing site or a usage site such as a hospital and a house. CONSTITUTION:Two pH sensitive electrodes 3 and 4 are laid out at a channel 2 inside a flow cell 1, the pH sensitive electrodes 3 and 4 are calibrated with tap water supplied to the channel 2 as a calibration liquid, and then electrolytic acid water is supplied to only the pH sensitive electrode 4 while the pH sensitive electrode 3 is allowed to contact the tap water. While the tap water and the electrolytic acid water are liquid-joined in the channel, the pH of the electrolytic acid water is measured according to the difference in the potential between two pH sensitive electrodes 3 and 4.

公开(公告)号：JPH0980009A

公开(公告)日：1997-03-28

申请号：JP26353695

申请日：1995-09-18

Applicant: TOA ELECTRONICS

Inventor： YANAGIDA YOSHINORI ,  NAKANO TAISUKE

IPC: G01N27/30 ,  G01N9/12 ,  G01N27/403

Abstract: PROBLEM TO BE SOLVED: To obtain an always-stable single-pole potential by easily detecting the renewing timing of the internal solution of a reference electrode by simply detecting the concentration change of the internal solution. SOLUTION: A small plastic piece 40 is put in the internal solution 31 of a reference electrode 30 as a material used for detecting the specific gravity change of the solution 31. The solution 31 is renewed by confirming the contaminated state of the solution 31 by detecting the position of the plastic piece 40 in the solution. Therefore, an always-stable single-pole potential can be obtained.

公开(公告)号：JPH09276873A

公开(公告)日：1997-10-28

申请号：JP9282796

申请日：1996-04-15

Applicant: MATSUSHITA ELECTRIC WORKS LTD ,  TOA ELECTRONICS

Inventor： NOGUCHI HIROYUKI ,  HIRAI TOSHIHISA ,  SAIHARA YASUHIRO ,  URATANI YUTAKA ,  NISHIKAWA JUICHI ,  NAKANO MOTOYOSHI ,  YANAGIDA YOSHINORI ,  IKEGAYA SATOYUKI

IPC: G01N33/18 ,  C02F1/46

Abstract: PROBLEM TO BE SOLVED: To provide an electrolytic water making apparatus having function capable of stably measuring the quality of water even under a continuous water passing condition large in the quantity of water over a long time. SOLUTION: In this electrolytic water making apparatus constituted so that water is electrolyzed by applying voltage across the electrodes within an electrolytic cell not only to form alkaline water in one electrode chamber but also to form acidic water in anther electrode chamber and alkaline water and acidic water are allowed to separately flow out of the outflow ports respectively formed to the respective electrode chambers, an electrochemical water quality measuring device 11 for measuring the quality of formed electrolytic water is set on the downstream side of the electrolytic cell. This electrochemical water quality measuring device 11 is constituted of the detection electrode 20 arranged to a water inspecting chamber 18 through which water to be inspected passes, the internal electrode 16 arranged in an internal soln. chamber 14 having an internal soln. 15 sealed therein and the porous liquid communication part 17 for ensuring the water permeability between both chambers 18, 14. The internal soln. chamber 14, and a wter channel through which water to be inspected flows or a water channel through which raw water flows are allowed to communicate with each other by a communication passage 40.

公开(公告)号：JPH07275861A

公开(公告)日：1995-10-24

申请号：JP9383794

申请日：1994-04-08

Applicant: TOA ELECTRONICS ,  MATSUSHITA ELECTRIC WORKS LTD

Inventor： YANAGIDA YOSHINORI ,  SAIHARA YASUHIRO ,  KISHIMOTO ATSUKO

IPC: C02F1/46 ,  G01N27/26

Abstract: PURPOSE:To provide an electrolytic water making apparatus capable of stably measuring the quality of formed electrolyzed water using an electrochemical sensor and performing stable display suitable for reading even in the case displayed on a display device. CONSTITUTION:In this electrolytic water making apparatus 1, electrochemical sensors 8A, 8B are arranged to electrolyzed water outflow passages such as an alkaline ion water outflow passage 24, an acidic ion water outflow passage 26 or the like. By electrically short-circuiting alkaline ion water and acidic ion water by a continuity means 30, the quality of water is measured by the electrochemical sensors 8A, 8B.

公开(公告)号：JPH05203615A

公开(公告)日：1993-08-10

申请号：JP3867492

申请日：1992-01-29

Applicant: TOA ELECTRONICS

Inventor： KATO AKIHIKO ,  YAMASATO MASAHARU ,  YANAGIDA YOSHINORI ,  KONNO HIROKO

IPC: G01N27/30 ,  G01N27/26 ,  G01N27/416

Abstract: PURPOSE:To provide a method and device for restoring a changed electrode potential of a pH measuring electrode using metal oxide or metal for sensitive film to an original potential condition in a short time. CONSTITUTION:Electrode potential-changed pH measuring electrodes 1-4 using iridium oxide for pH-sensitive film are electrically shortcircuitted by electrically connecting their leads 1a-4a to each other, and they are immersed in neutral phosphate solution 5 of pH 6.86 for about an hour. The pH-measuring electrodes of which electrode potential is changed can be restored almost to an original potential condition in a short time to be stabilized, so a very good efficiency is achieved, and because they can be restored to the potential condition where calibration can be performed sufficiently to be stabilized, thereby they can be reused without being wasted and disposed as defectives.

公开(公告)号：JPS6247546A

公开(公告)日：1987-03-02

申请号：JP18746485

申请日：1985-08-28

Applicant: TOA ELECTRONICS

Inventor： YAMASATO MASAHARU ,  ITO YOSHIHARU ,  YANAGIDA YOSHINORI

IPC: G01N27/30

Abstract: PURPOSE:To prevent the generation of a fault by injecting a highly water absorptive resin at an ordinary temp. into an internal liquid of an electrode and solidifying the internal liquid of the electrode so as to prohibit the generation of foam. CONSTITUTION:The highly water absorptive resin which does not affect the compsn. of the internal liquid of a glass electrode, ion selective electrode, reference electrode, etc. to be used for measuring pH and ion activity of various solns. is injected in an extremely small amt. into the internal liquid at the ordinary temp., by which the solidification of the internal liquid is executed. The generation of the foam by the handling or transportation after the completion of the electrode is obviated by an non-fluidization of the internal liquid; therefore, the generation of a defective connection and fault in the wetting part and liquid junction part of the internal electrode is prevented.

公开(公告)号：JPH10151459A

公开(公告)日：1998-06-09

申请号：JP31534096

申请日：1996-11-26

Applicant: MATSUSHITA ELECTRIC WORKS LTD ,  TOA ELECTRONICS

Inventor： NISHIKAWA JUICHI ,  SAIHARA YASUHIRO ,  NOGUCHI HIROYUKI ,  NAKANO MOTOYOSHI ,  URATANI YUTAKA ,  HIRAI TOSHIHISA ,  IKEGAYA SATOYUKI ,  YANAGIDA YOSHINORI

IPC: C02F1/46

Abstract: PROBLEM TO BE SOLVED: To provide an electrolytic water forming apparatus which can prevent soldering for a mounting part of a printed wiring board of an amplifier part from being broken. SOLUTION: An electrolytic water forming apparatus is formed by providing an electrolytic cell which forms alkaline and acidic electrolytic water by electrolysis of water and a water quality measuring device which measures electrochemically the quality of water of the electrolytic water formed in the electrolytic cell. The water quality measuring device is formed by providing an acting electrode part 28 arranged in a water examining part 17, a sealing part 18 for sealing an inner soln. 16, a comparative electrode part 21 arranged in the sealing part 18, a porous liq. communicating part 22 between the water examining part 17 and the sealing part 18 and an amplifier part 14 which amplifies electric voltage between the acting electrode part 28 and the comparative electrode part 21 and outputs it. A buffer layer 47 with a height for covering a mounting part 46 with a potting agent with an insulation resistance of at least 1×10 Ω and a hardness of at most 60 degree is provided on the surface of a printed base sheet 45 and an insulating layer 48 based on a potting agent with an insulating resistance of at least 1×10 Ω provided to form the amplifier part 14.

公开(公告)号：JPH0523360A

公开(公告)日：1993-02-02

申请号：JP23387691

申请日：1991-08-21

Applicant: TOA ELECTRONICS

Inventor： KATO AKIHIKO ,  ITO YOSHIHARU ,  YANAGIDA YOSHINORI ,  YAMASATO MASAHARU ,  KATSUBE TERUAKI

IPC: A61B5/00 ,  A61B5/0408 ,  A61B5/0478 ,  A61B5/0492 ,  A61B10/00 ,  A61C19/04 ,  G01N27/30

Abstract: PURPOSE:To obtain an electrode for pH measurement which is fast, gives good response with high speed over a wide pH range, makes a stable measurement for a long period possible and can be constituted into an extremely fine shape so as to be suitable for dental examination. CONSTITUTION:The title electrode is an electrode for pH measurement wherein a supporting body 3 wherein an insulating film 2 is provided on the surface of an electrically conductive base material 1, an iridium oxide responding film 4 provided by electrically connecting it with the inner electrically conductive base material 1 on the side face or the apex face of one side of the supporting body 3 and a porous protective film 5 covering the iridium oxide responding film 4 and formed on the supporting body 3 are provided and the iridium oxide responding film 4 consists of iridium oxide with a ratio of oxygen to iridium of 2.5-3.5.

公开(公告)号：JPH0518929A

公开(公告)日：1993-01-26

申请号：JP23387591

申请日：1991-08-21

Applicant: TOA ELECTRONICS

Inventor： KATO AKIHIKO ,  YANAGIDA YOSHINORI ,  YAMASATO MASAHARU ,  KATSUBE TERUAKI

IPC: A61B5/145 ,  A61B5/1468 ,  G01N27/30

Abstract: PURPOSE:To obtain an electrode for measuring pH and its measuring method which enables the entire electrode to be formed finely, is rigid and at the same time superb in chemical resistance, achieves an improved response over a wide pH range and a stable measurement for a long period of time. CONSTITUTION:An electrode for measuring pH is provided with a conductive support 1 and an iridium oxide sensitive film 3 which is formed on a surface of the conductive support 1 and preferably is provided with the conductive support 1, an insulation film 2 which is provided at one portion of the conductive support 1, and the iridium oxide sensitive film 3 which is formed while it is in contact with the conductive support 1 at a portion without any insulation film 2. The iridium oxide sensitive film 3 consists of an iridium oxide where a ratio of oxygen to iridium is 2.5-3.5.