초록 ▼

Apparatus and methods for supplying a portion of a fluid stream and, alternately, a fluid of known composition and concentration to an analyzer are provided. The fluid stream is directed through a series of connected chambers formed in an integral housing. A sampling needle has an inlet in one of th

Apparatus and methods for supplying a portion of a fluid stream and, alternately, a fluid of known composition and concentration to an analyzer are provided. The fluid stream is directed through a series of connected chambers formed in an integral housing. A sampling needle has an inlet in one of the chambers and an outlet in fluid communication with the analyzer. When desired, a tube or vial containing a known fluid may be inserted into a chamber containing the sampling needle, so that the known fluid will be supplied to the analyzer. A second needle provides ventilation to the vial to prevent the formation of a vacuum as the known fluid is drained from the vial.

대표청구항 ▼

[ What is claimed is:] [1.] A fluid sampling apparatus comprising in combination:(b) a fluid inlet aperture in said housing means providing fluid communication from outside said housing means into said lower region;(c) a primary fluid outlet aperture in said housing means positioned so as to define

[ What is claimed is:] [1.] A fluid sampling apparatus comprising in combination:(b) a fluid inlet aperture in said housing means providing fluid communication from outside said housing means into said lower region;(c) a primary fluid outlet aperture in said housing means positioned so as to define a primary fluid flow path extending from an upstream location at said inlet aperture, respectively through said lower and upper regions of said chamber, to a downstream location at said outlet aperture;(d) a container aperture in the top wall portion of said housing means, said container aperture being adapted to receive a container, and means for alternately sealing or opening said container aperture; and,(e) a hollow sampling tube positioned in said chamber with an upper end oriented in alignment with said container aperture, said upper end also having a fluid opening between said chamber and the sampling tube interior, said tube interior providing at least a portion of a sample withdrawal passageway extending through a sample withdrawal aperture in said housing means.