GAS CONCENTRATION MEASURING SYSTEM AND METHOD

• Main Authors: KAWAKAMI HIROKI, NISHI SHINJI, UNEME SHIGEO, KATSUKI MASATO, DOBASHI MACHIO, YAGIHARA TAKESHI, YAGI AKIO
• Format: Patent
• Language: English; Japanese
• Published: 01.09.2016
• Subjects: CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; HUMAN NECESSITIES; HYGIENE; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEASURING; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide a gas concentration measuring system and method capable of measuring a gas of a low-concentration sterile chemical with high accuracy.SOLUTION: A gas concentration measuring system 1 comprises: a three-way valve 11 including a gas concentration measuring instrument 13 which measures concentration of a measuring target gas for sterilizing the inside of an isolator 20 via a piping 10, an input end P11 which is provided on the isolator 20 side of the piping 10 and to which the isolator 20 is connected, an input end P12 to which a purge gas PG is input, and an output end P13 which selectively communicates with any one of the input end P11 and the input end P12; and a three-way valve 12 including an output end P22 which is provided on the gas concentration measuring instrument 13 side of the piping 10 and to which the gas concentration measuring instrument 13 is connected, an output end P23 to which the purge gas PG is output, and an input end P21 which is connected to the output end P13 of the three-way valve 11 and selectively communicates with any one of the output end P22 and the output end P23.SELECTED DRAWING: Figure 1 【課題】低濃度の滅菌薬品のガスを高い精度をもって測定することが可能なガス濃度測定システム及び方法を提供する。【解決手段】ガス濃度測定システム１は、配管１０を介してアイソレータ２０の内部を滅菌する測定対象ガスの濃度を測定するガス濃度測定器１３と、配管１０のアイソレータ２０側に設けられ、アイソレータ２０が接続される入力端Ｐ１１と、パージガスＰＧが入力される入力端Ｐ１２と、入力端Ｐ１１と入力端Ｐ１２との何れか一方と選択的に連通する出力端Ｐ１３とを有する三方弁１１と、配管１０のガス濃度測定器１３側に設けられ、ガス濃度測定器１３が接続される出力端Ｐ２２と、パージガスＰＧが出力される出力端Ｐ２３と、三方弁１１の出力端Ｐ１３に接続されて出力端Ｐ２２と出力端Ｐ２３との何れか一方と選択的に連通する入力端Ｐ２１とを有する三方弁１２とを備える。【選択図】図１