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1. 发明专利

JP2738970B2 失效
公开(公告)号：JP2738970B2
公开(公告)日：1998-04-08
申请号：JP6498790
申请日：1990-03-15
申请人： FUJI DENKI KK , SHINKOSUMOSU DENKI KK , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , SHINOHARA YASUHIRO , TAKADA TADASHI , SAKAI TOSHI , AOKI TOYOAKI , OOGURO KOJI
IPC分类号： G01N1/10 , G01N1/22 , G01N27/12 , G01N33/18

2. 发明专利

JP2533669B2 失效
公开(公告)号：JP2533669B2
公开(公告)日：1996-09-11
申请号：JP10809490
申请日：1990-04-24
申请人： FUJI DENKI KK , SHINKOSUMOSU DENKI KK , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , SHINOHARA YASUHIRO , TAKADA TADASHI , SAKAI TOSHI , AOKI TOYOAKI
IPC分类号： G01N31/00 , G01N27/12 , G01N33/18

3. 发明专利

JPH0782005B2 失效
公开(公告)号：JPH0782005B2
公开(公告)日：1995-09-06
申请号：JP17594589
申请日：1989-07-07
申请人： FUJI DENKI KK , SHINKOSUMOSU DENKI KK , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , ITO HARUO , TAKADA TADASHI , SAKAI TOSHI , AOKI TOYOAKI
IPC分类号： G01N31/00 , G01N33/18

4. 发明专利

JP2938301B2 失效
公开(公告)号：JP2938301B2
公开(公告)日：1999-08-23
申请号：JP4558393
申请日：1993-03-08
申请人： SHINKOSUMOSU DENKI KK , FUJI DENKI KK
发明人： TAKADA TADASHI , TANJO HIROMASA , HARADA KENJI , NISHIKATA SATOSHI
IPC分类号： G01N27/04 , G01N1/22 , G01N27/12

5. 发明专利

JPH0341360A APPARATUS FOR MEASURING FREE CHLORINE 失效
公开(公告)号：JPH0341360A
公开(公告)日：1991-02-21
申请号：JP17594589
申请日：1989-07-07
申请人： FUJI ELECTRIC CO LTD , NEW COSMOS ELECTRIC CO , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , ITO HARUO , TAKADA TADASHI , SAKAI TOSHI , AOKI TOYOAKI
IPC分类号： G01N31/00 , G01N33/18
摘要： PURPOSE:To enhance the reliability of a measuring apparatus by performing operation according to a plurality of specific formulae using a detection means of uncontaminated hypochlorous acid. CONSTITUTION:The circumferential air is sucked in an apparatus by an air pump 8. The air is dehymidified and purified by a filter 1 and a part of this air passes through a flowmeter 2 to become dry gas while the remainder passes through a flowmeter 3 to become carrier gas. The carrier gas flows in the gaseous phase part in an extraction tank 4 and hyprochlorous acid in sample water is diffused to the carrier gas from the surface of the water. The hypochlorous acid-containing carrier gas mixed with the dry gas is guided to a measuring chamber 7 and the concn. of hypochlorous acid is measured by a semiconductor type gas sensor 15 to be inputted to an operation apparatus 9. Subsequently, in the operation apparatus 9, the concn. OCl of hypochlorite ion and the concn. of total free chlorine are operated from the concn. HOCl of hypochlorous acid, pH and water temp. on the basis of formulae I, II. By this method, the reliability of the measuring apparatus can be enhanced.

6. 发明专利

JPH02285260A APPARATUS FOR MEASURING FREE CHLORINE IN SAMPLE WATER 失效
公开(公告)号：JPH02285260A
公开(公告)日：1990-11-22
申请号：JP10696689
申请日：1989-04-26
申请人： FUJI ELECTRIC CO LTD , NEW COSMOS ELECTRIC CO , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , ITO HARUO , TAKADA TADASHI , SAKAI TOSHI , AOKI TOYOAKI , HAMA YUKIO
IPC分类号： G01N31/00 , G01N33/18
摘要： PURPOSE:To measure free chlorine by transferring free chlorine in sample water to a gaseous phase while preventing the condensation of moisture on the inner wall of a measuring apparatus by mounting a gaseous phase extraction means, a carrier gas humidity conditioning means and a semiconductor type detection means. CONSTITUTION:Free chlorine in sample water is transferred to carrier gas by a gaseous phase extraction means 15 and the humidity of the carrier gas containing chlorine subjected to gaseous phase extraction is conditioned by a humidity conditioning means 16. A semiconductor type detection means 17 detects the amount of free chlorine transmitted to the carrier gas. Both of free chlorine and bound chlorine are transferred to the carrier gas by the gaseous phase extraction means 15 but the semiconductor type detection means 17 responds only to free chlorine and only hypochlorous acid in the sample water can be separated and measured without receiving the effect of bound chlorine in the sample water. Further, since the steam pressure in the carrier gas is held to saturated steam pressure or less by the humidity conditioning means 16, no moisture is condensed on the inner wall of a measuring apparatus and the re-dissolution and re-emission of free chlorine are eliminated and free chlorine in the sample water can be measured with high accuracy.

7. 发明专利

JPH02285259A APPARATUS FOR MEASURING FREE CHLORINE IN SAMPLE WATER 失效
公开(公告)号：JPH02285259A
公开(公告)日：1990-11-22
申请号：JP10696589
申请日：1989-04-26
申请人： FUJI ELECTRIC CO LTD , NEW COSMOS ELECTRIC CO , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , ITO HARUO , TAKADA TADASHI , SAKAI TOSHI , AOKI TOYOAKI , HAMA YUKIO
IPC分类号： G01N31/00 , G01N33/18
摘要： PURPOSE:To measure free chlorine with high accuracy without being affected by bound chlorine by mounting a gaseous phase extraction means, a mist removing means and a semiconductor type gas detection means. CONSTITUTION:Free chlorine in sample water is transferred to carrier gas by a gaseous phase extraction means 15 and the mist in the carrier gas transferred from the sample water is separated by a mist removing means 3. A semiconductor type gas detection means 16 measures the amount of free chlorine transferred to the carrier gas. By this method, hypochlorous acid and bound chlorine are together transferred to a gaseous phase but only hypochlorous acid is detected by the semiconductor type gas detection means 16 and free chlorine can be measured without receiving the effect of bound chlorine. Further, since the mist transferred to the carrier gas from the sample water is separated by the mist removing means, no moisture is adhered to the inner wall of a measuring apparatus and the re-dissolution and re-emission of free chlorine by adhered moisture are eliminated and free chlorine in the sample water can be measured with high accuracy.

8. 发明专利

JPH02248851A MEASUREMENT OF ISOLATED CHLORINE IN SAMPLE WATER 失效
公开(公告)号：JPH02248851A
公开(公告)日：1990-10-04
申请号：JP6958889
申请日：1989-03-22
申请人： FUJI ELECTRIC CO LTD , NEW COSMOS ELECTRIC CO , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , HOSHIKAWA HIROSHI , KONO MASARU , TAKADA TADASHI , SAKAI TOSHI , AOKI TOYOAKI , HAMA YUKIO
IPC分类号： G01N27/12 , G01N1/22 , G01N33/18
摘要： PURPOSE:To measure hypochlorous acid alone in a sample water accurately by bringing the sample water containing the hypochlorous acid into contact with a carrier gas and then, by measuring the carrier gas with a semiconductor gas sensor. CONSTITUTION:Ambient air is sucked into a device with a pump 8. The air is dehumidified and purified with a filter 1 and one part is turned to a dry gas passing through a weighing meter 2 while the other part thereof is turned to a carrier gas passing through a flowmeter 3. When the carrier gas passes through a porous tube 5 immersed in a sample water within an extraction tank 4, isolated chlorine in the sample water passes through a fine pore of a tube 5 to diffuse into the carrier gas. In this apparatus, steam is mixed with the dry gas coming via the flowmeter 2 in the course of a piping to a measuring chamber 6 from the tube 5 so that it is not condensed. Thus, the carrier gas mixed with the dry gas is introduced to a measuring chamber 6 to measure a concentration of isolated chlorine with a semiconductor type gas sensor.

9. 发明专利

JPH06118041A METHOD FOR MEASURING TRACE STERILIZER IN WATER 失效
公开(公告)号：JPH06118041A
公开(公告)日：1994-04-28
申请号：JP26521692
申请日：1992-10-05
申请人： FUJI ELECTRIC CO LTD , NEW COSMOS ELECTRIC CO , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , HARADA KENJI , TAKADA TADASHI , TANJIYOU HIROMASA , AOKI TOYOAKI
IPC分类号： G01N1/22 , G01N27/12
摘要： PURPOSE:To perform partial quantitization by extracting and transferring a sterilizer in a sample water containing a plurality of ozone, hypochlorous acid, and chlorine dioxide into a carrier gas, and dissolving and removing determined plural sterilizers through a column. CONSTITUTION:A sample water flows down in a glass pipe separator 1 and is drained by a liquid pump 2, and a carrier gas is sucked by an air pump 3, purified by columns 4, 5, and dried. Sterilizers of ozone, hypochlorous acid and chlorine dioxide in the sample water are transferred into the carrier gas while flowing down in the glass pipe separator 1. This measurement device has a column 10 for leaving a single sterilizer from the carrier gas. The total concentration of ozone, hypochlorous acid and chlorine dioxide is measured by use of a semiconductor type gas sensor 7. Ozone is decomposed and removed by manganese dioxide, and the total concentration of hypochlorous acid and chlorine dioxide is measured. The difference between the measurement values is taken to determine the ozone concentration. For hypochlorous acid, measurement is performed in the same manner by use of a strong basic negative ion exchange resin. For chlorine dioxide concentration, the ozone and hypochlorous acid are decomposed and removed by the manganese dioxide and strong basic negative ion-exchange resin to form the carrier gas containing only chlorine dioxide, which is then measured by the semiconductor type gas sensor 7.

10. 发明专利

JPH04296653A WATER QUALITY ANALYZER 失效
公开(公告)号：JPH04296653A
公开(公告)日：1992-10-21
申请号：JP6222591
申请日：1991-03-27
申请人： FUJI ELECTRIC CO LTD , NEW COSMOS ELECTRIC CO , AOKI TOYOAKI
发明人： NISHIKATA SATOSHI , SHINOHARA YASUHIRO , TAKADA TADASHI , TANJIYOU HIROMASA , AOKI TOYOAKI , OGURO KOJI
IPC分类号： G01N31/00 , G01N33/18
摘要： PURPOSE:To enable accurate measurement of free chroline by measuring the concentrations of components contained in carrier gases which pass through a pipe at room temperature and a pipe heated, and determining a difference between both measurements to eliminate affection by ozone. CONSTITUTION:Air is sucked by an air pump 3, and gas which passes through a flow meter 5 is blown into sample water in an extract tank 1 and gas which passes through a flow meter 6 is mixed with carrier gas from which free chroline and ozone are extracted. Measurement is made with a pipe between solenoid valves 7 and 8 used as a second carrier gas passage 19 at room temperature, by a measuring chamber 9 incorporating a gas sensor. Its concentration is the sum of the concentrations of free chroline and ozone. Next, the pipe between the valves 7 and 8 is switched over to a first carrier gas passage 18 heated by a heater 11 and measurement is made. The heating temperature is 80 to 100 deg.C and free chroline is decomposed completely. Accordingly, the concentration at this time is the concentration of ozone only. Then the concentration of free chroline is determined by calculating a difference between both measured concentrations at a calculation device 10.

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