JPS6351276U

JPS6351276U -

Info

Publication number: JPS6351276U
Application number: JP14551086U
Authority: JP
Priority date: 1986-09-22
Filing date: 1986-09-22
Publication date: 1988-04-06

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す構成説明図
、第２図はこの考案のサンプル送液手順を説明す
るフローチヤートである。１……サンプル供給路、２……サンプル排出路
、３……６方バルブ、４……サンプルループ、５
……移動相供給路、６……カラム流路、７……第
１気泡検出器、８……第２気泡検出器、９……第
１記憶手段、１０……第２記憶手段、１１……比
較判断手段、１２……出力手段。 FIG. 1 is a configuration explanatory diagram showing an embodiment of this invention, and FIG. 2 is a flowchart illustrating a sample liquid delivery procedure of this invention. 1... Sample supply path, 2... Sample discharge path, 3... 6-way valve, 4... Sample loop, 5
...Mobile phase supply path, 6...Column flow path, 7...First bubble detector, 8...Second bubble detector, 9...First storage means, 10...Second storage means, 11... ... Comparative judgment means, 12... Output means.

Claims

[Claims for Utility Model Registration] A sample loop connected via a 6-way valve between a sample supply path and a sample discharge path, which are equipped with liquid feeding means, is moved by switching the flow path of the 6-way valve. In an auto sample injector that is connected between a phase supply path and a column flow path having a column for liquid chromatography and is configured to pump a sample in a sample loop to the column, the sample supply path and the sample discharge The valves are installed in the vicinity of the six-way valve in each channel, and are used to detect air bubbles flowing through the sample supply channel and the sample discharge channel when the sample is passed through the sample supply channel before switching the flow channel of the six-way valve. 1 and 2nd bubble detectors, and a predetermined detection pattern of bubbles detected by the first bubble detector for each unit time and the first bubble detector.
First and second storage means for respectively storing the unit time detected by the second bubble detector and the same bubble detection pattern for each unit time after a preset time after the bubble detector detects the bubble. Then, the bubble detection patterns for each set time difference stored in the first and second storage means are recalled and compared, and the bubbles detected by the first bubble detector and the bubbles detected by the second bubble detector are determined. A comparison judgment means for judging whether they are the same or not, and based on the judgment result by the comparison judgment means, it is determined that the bubbles in both the detectors are the same, and all the bubbles detected by the first bubble detector are the second bubbles. When detected by the detector, the output means outputs a liquid feeding stop signal to the liquid feeding means to stop feeding the sample, and then outputs a flow path switching signal to the six-way valve to switch the six-way valve. An auto sample injector characterized by being equipped with.