The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2020
Filed:
Dec. 26, 2017
Shimadzu Corporation, Kyoto, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
A flow controller including a flow channel resistance disposed in a carrier gas supply flow channel, a control valve, pressure detecting portionand a pressure difference detecting portion, a storage part storing a first calibration curve indicating a correlation between a pressure difference Δp and a total flow volume fat the first set supply pressure Pand a second calibration curve indicating a correlation between a pressure difference Δp and the total flow volume fat a second set supply pressure Plarger than the first set supply pressure Pis provided. A total flow volume f of the carrier gas is calculated based on the supply pressure pdetected by the pressure detecting portion, pressure difference Δp information detected by the pressure difference detecting portion, the first calibration curve and the second calibration curve.