초록 ▼

A modular vial autosampler has a storage area for vials containing samples to be analyzed and at least one modular sampling station. A vial transfer mechanism lifts a sample vial from the storage section, moves it to a station for identification and then to a sampling station, and under central cont

A modular vial autosampler has a storage area for vials containing samples to be analyzed and at least one modular sampling station. A vial transfer mechanism lifts a sample vial from the storage section, moves it to a station for identification and then to a sampling station, and under central control activates the sampling station for obtaining a sample for analysis. The vial transfer mechanism is movable in x, y, and z directions to capture and move a selected vial. The autosampler has a series of valves operable under central control to selectively introduce two different standards into the sample, and after obtaining the sample, for rinsing and purging the conduits or lines and needles to reduce sample carryover. The modular vial autosampler includes controls to selectively sample either a gas or a liquid using many of the same components.

대표청구항 ▼

[ What is claimed is:] [1.] A vial autosampler, comprising:a housing having a vial storage area and a front mounting panel extending above the vial storage area;a multi position valve carried by the housing and having a center pair of ports and a first and second side pair of ports on opposed sides

[ What is claimed is:] [1.] A vial autosampler, comprising:a housing having a vial storage area and a front mounting panel extending above the vial storage area;a multi position valve carried by the housing and having a center pair of ports and a first and second side pair of ports on opposed sides of the center pair of ports;a first standards vessel containing a first standard solution coupled to the first side pair of ports by a first standards line;a second standards vessel containing a second standard solution coupled to the second side pair of ports by a second standards line; anda fluid line extending from a source of Liquid to an outlet, and connected to the center pair of ports of the multi position valve but otherwise fluidly isolated from the first and second standards lines;wherein the multi position valve includes a rotatable block having an inner channel capable of moving between the center pair of ports and one of the first and second side pairs of ports to deliver a measured quantity of one of the first and second standard solutions to the fluid line.