公开(公告)号：US11874205B2

公开(公告)日：2024-01-16

申请号：US17137967

申请日：2020-12-30

申请人： SHIMADZU CORPORATION

发明人： Ayaka Kisaka ,  Yasuhiro Kimoto ,  Yu Nagao

IPC分类号： G01N30/38 ,  G01N30/02

CPC分类号： G01N30/38 ,  G01N2030/025 ,  G01N2030/382

摘要： A gas chromatograph comprises a sample gas generation unit, separation column, and detector. Multiple gas sources serve as carrier gases to transport sample gas to the separation column. A switching component connects the gas sources to the sample gas generation unit based on user-input information. This information is stored in a gas type memory, which aids a gas type identification component in determining the carrier gas type by monitoring the switching component's status and referring to the stored data.

公开(公告)号：US20210270786A1

公开(公告)日：2021-09-02

申请号：US17137967

申请日：2020-12-30

申请人： SHIMADZU CORPORATION

发明人： Ayaka Kisaka ,  Yasuhiro Kimoto ,  Yu Nagao

IPC分类号： G01N30/38

摘要： In a gas chromatograph configured so that a gas type of carrier gas can be changed, automatic recognition of the gas type of the carrier gas is enabled. The gas chromatograph includes a sample gas generation part (2) configured to generate a sample gas using a sample injected thereinto, a separation column (6) fluidly connected to an outlet of the sample gas generation part (2) and for separating components included in the sample gas generated by the sample gas generation part (2), a detector (8) fluidly connected to an outlet of the separation column (6) and for detecting the components separated in the separation column (6), a plurality of gas supply sources (12A; 12B) for supplying gases serving as carrier gas for delivering the sample gas generated by the sample gas generation part (2) to the separation column (6), a switching part (14) to which the plurality of gas supply sources (12A; 12B) are fluidly connected and is configured to fluidly connect one of a plurality of the gas supply sources (12A; 12B) to the sample gas generation part (2) selectively by switching, a gas type setting part (44) configured to set types of gases supplied from each of a plurality of the gas supply sources (12A; 12B) connected to the switching part (14) based on information input by the user, a gas type memorizing part (36) configured to memorize an information as to types of gases set by the gas type setting part (44), and a gas type identification part (32) configured to recognize a state of the switching part (14) and to identify a gas type of the carrier gas supplied to the sample gas generating part (2) based on the state of the switching part (14) and the information memorized by the gas type memorizing part (44).