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：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：JPH10314738A

公开(公告)日：1998-12-02

申请号：JP12446797

申请日：1997-05-14

Applicant: MATSUSHITA ELECTRIC WORKS LTD ,  TOA ELECTRONICS

Inventor： NOGUCHI HIROYUKI ,  SAIHARA YASUHIRO ,  NISHIKAWA JUICHI ,  URATANI YUTAKA ,  YANAGIDA YOSHINORI ,  IKEGAYA SATOYUKI

IPC: C02F1/46 ,  G01N27/416

Abstract: PROBLEM TO BE SOLVED: To provide an electrolyzed water producing apparatus comprising an electrochemical water quality-measuring apparatus which can shorten unnecessary waiting time from the starting operation to stable production of electrolyzed water. SOLUTION: This electrolyzed water producing apparatus is constituted of an electrolytic bath 2 to produced alkaline water and acidic water by electrolysis of water and separately discharge the produced alkaline water and acidic water and an electrochemical water quality measuring apparatus 20 comprising a water quality detecting part 17 installed in the electrolytic bath 2 to measure the quality of at least either one of the alkaline water or the acidic water and an amplifying part 14 to amplify the electromotive force generated in the water quality detecting part 17. The electromotive force of the electrochemical water quality measuring apparatus 20 to the amplifying part 14 is made to be applied at the time of starting water supply. At the time when water supply is stopped, the electromotive force is prevented from being applied to the amplifying part 14, so that the amplifying part 14 is prevented from being loaded with high overload.

公开(公告)号：JPH10151462A

公开(公告)日：1998-06-09

申请号：JP31533996

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: G01N27/416 ,  C02F1/46

Abstract: PROBLEM TO BE SOLVED: To provide an electrolytic water forming apparatus which can perform measurement of quality of water without receiving any influence caused by adhesion of air bubbles to an acting electrode and stably. SOLUTION: This electrolytic water forming apparatus is formed by providing an electrolytic tank wherein alkaline water and acidic water are formed by electrolysis of water and these formed alkaline and acidic electrolytic waters are separately made to flow out and a water quality measuring device 20 which is arranged on the downstream side of the electrolytic tank and measures electrochemically the quality of water of the electrolytic tank. A water examining part 17 through which electrolytic water passes, an acting electrode part 28 whose bottom part is arranged by facing to the water examining part 17, a sealing part 18 for sealing the inner soln. 16, a comparative electrode part 21 arranged in the sealing part 18 and a porous liq. communicating part 22 between the water examining part 17 and the sealing part 18 are provided to form a water quality measuring device 20. In addition, the bottom part in the water examining part 17 of the acting electrode part 28 is formed into a projected shape.

公开(公告)号：JPH09210951A

公开(公告)日：1997-08-15

申请号：JP33158396

申请日：1996-11-26

Applicant: MATSUSHITA ELECTRIC WORKS LTD ,  TOA ELECTRONICS

Inventor： IKEGAYA SATOYUKI ,  YANAGIDA YOSHINORI ,  SAIHARA YASUHIRO ,  NISHIKAWA JUICHI ,  NOGUCHI HIROYUKI ,  NAKANO MOTOYOSHI

IPC: G01N27/38 ,  C02F1/46 ,  G01N27/416

Abstract: PROBLEM TO BE SOLVED: To establish a washing method for an oxidative/reductive potential sensor, which can perform washing safely. SOLUTION: A working electrode 2 of non-soluble metal of an oxidative/ reductive potential sensor 1 is subjected to treatments with a strong acid water L1 containing dissolved chlorine, a weal acid water L2 containing dissolved oxygen, and strong alkali water L3 containing dissolved hydrogen in the sequence as named, thereby washing the surface of the working electrode 2 with no use of any washing liquid having toxicity.

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：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：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.