公开(公告)号：US20230384270A1

公开(公告)日：2023-11-30

申请号：US18191415

申请日：2023-03-28

Applicant: SHIMADZU CORPORATION

Inventor： Yutaka KURATANI ,  Shingo Masuda ,  Masaru Kozakura ,  Masahiro Kojima

IPC: G01N30/30

CPC classification number: G01N30/30 ,  G01N2030/025

Abstract: A gas chromatograph includes an oven that has a first heater device and a second heater device. The first heater device and the second heater device are connected in series when a voltage of a power supply is a first voltage, and are connected in parallel when the voltage of the power supply is a second voltage that is lower than the first voltage. A power controller includes a first control device that controls ON/OFF of supply of power to the series-connected first heater device and second heater device or ON/OFF of supply of power to the parallel-connected first heater device, and a second control device that controls ON/OFF of supply of power to the parallel-connected second heater device. A controller adjusts a duty ratio of supply of power to the parallel-connected first heater device and second heater device by controlling the first control device and the second control device when the voltage of the power supply is the second voltage.

公开(公告)号：US20200182896A1

公开(公告)日：2020-06-11

申请号：US16668141

申请日：2019-10-30

Applicant: SHIMADZU CORPORATION

Inventor： Yutaka KURATANI

IPC: G01N35/10 ,  G01N35/00

Abstract: A sample injector is configured to determine an amount of movement of a piston for injecting a sample into an analyzer based on a preset amount of the sample to be injected into the analyzer and information of a first identification code about an internal volume read by an optical sensor.