초록 ▼

A gas detection and measurement system includes a light source, a light sensor, a test cell body having a first fluid port and a second fluid port, and first and second optical paths from the light source to the light sensor through the test cell. The first and second optical paths have different le

A gas detection and measurement system includes a light source, a light sensor, a test cell body having a first fluid port and a second fluid port, and first and second optical paths from the light source to the light sensor through the test cell. The first and second optical paths have different lengths. As fluid flows through the test cell body, light intensity measurements are taken along the first and second optical paths so that the concentration of a target gas within the fluid can be calculated.

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[ What is claimed is:] [1.] A spectrophotometric flow cell, comprising:a) a flow chamber defining a fluid flow path, having a fluid entrance at one end of said chamber and a fluid exit at the other end of said chamber;b) a first pair of optical elements, each having an end which projects into said c

[ What is claimed is:] [1.] A spectrophotometric flow cell, comprising:a) a flow chamber defining a fluid flow path, having a fluid entrance at one end of said chamber and a fluid exit at the other end of said chamber;b) a first pair of optical elements, each having an end which projects into said chamber, said ends being opposed to one another so as to form a first gap; andc) a second pair of optical elements, each having an end which projects into said chamber, said ends being opposed to one another so as to form a second gap greater than said first gap,wherein said first and second gaps are in said fluid flow path.