公开(公告)号：US20220074904A1

公开(公告)日：2022-03-10

申请号：US17348804

申请日：2021-06-16

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Nam Goo KANG

IPC: G01N33/00

Abstract: Disclosed herein is a quantifying method of uncertainty of measured value by close match span calibration of measuring sensor comprising a step of: a quantifying using below equation I. u c ⁡ ( x bag ) ≃ [ 1 f cyl ⁢ u ⁡ ( R bag ) ] 2 + [ 1 f cyl ⁢ u ⁡ ( R cyl ) ] 2 + u 2 ⁡ ( x cyl ) ( I ) wherein, uc is a combined standard uncertainty, Xbag is a measured value of a test, xcyl is standard value, fcyl is standard response factor (sensitivity coefficient), Rbag is a signal value of a test, represents xbag.fbag, Rcyl represents xcyl.fcyl, and u is standard uncertainty.

公开(公告)号：US20240353382A1

公开(公告)日：2024-10-24

申请号：US18138040

申请日：2023-04-22

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Nam Goo KANG

IPC: G01N30/86 ,  G01N1/22

CPC classification number: G01N30/8665 ,  G01N1/2273 ,  G01N2030/025

Abstract: The present application provides a verification method and system of a sample introduction device dedicated to gas chromatography for precisely measuring a concentration of atmospheric greenhouse gas. The verification method of a sample introduction device dedicated to gas chromatography for precisely measuring a concentration of atmospheric greenhouse gas includes the steps of: 1) calculating, by a bias size calculation unit, a degree of bias in a tedlar bag using a correlation between a bias of Pbag to Pcyl and a bias of xbag to xcyl; and 2) determining, by a device performance determination unit, a device having the smallest value of a size of the bias calculated from the bias size calculation unit as an optimal device.

公开(公告)号：US20210025549A1

公开(公告)日：2021-01-28

申请号：US16477017

申请日：2018-01-16

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Nam Goo KANG ,  Sang Hyub OH

IPC: F17C13/02 ,  G01F1/34

Abstract: The present invention relates to a method for determining loss of gas in a gas container. According to an embodiment of the present invention, the method for determining the loss of gas in the gas container is characterized by including the steps of (a) filling a first container (10) with a component gas and a balance gas, (b) measuring a gas pressure inside the first gas container (11), (c) allowing the first gas container and a second gas container having an evacuated inside to communicate and performing a first-stage gas pressure split, and (d) measuring a gas pressure inside the second gas container, wherein an amount of the component gas adsorbed inside the gas container is calculated through a difference between a measured value of step (b) and a measured value of step (d) and is determined as an amount of gas loss.