Spectrasensors, Inc.

Adam S Chaimowitz

Alfred O Feitisch

Xiang Liu

Mathias Schrempel

Lutz Keller

Peter Scott

Hsu-Hung Huang

Peter Dorn

Gary Yeh

William Jenko

Mthias Schrempel

A frequency registration deviation is quantified for a field spectrum collected during analysis by a spectroscopic analysis system of a sample fluid when the spectroscopic analysis system has deviated from a standard calibration state. The field spectrum is corrected based on the frequency registration deviation using at least one spectral shift technique, and a concentration is calculated for at least one analyte represented by the field spectrum using the corrected field spectrum. Related systems, methods, and articles are described.

Determination and correction of frequency registration deviations for quantitative spectroscopy

A sample cell can be designed to minimize excess gas volume. Described features can be advantageous in reducing an amount of gas required to flow through the sample cell during spectroscopic measurements, and in reducing a time (e.g. a total volume of gas) required to flush the cell between sampling events. In some examples, contours of the inners surfaces of the sample cell that contact the contained gas can be shaped, dimensioned, etc. such that a maximum clearance distance is provided between the inner surfaces at one or more locations. Systems, methods, and articles, etc. are described.

Reduced volume spectroscopic sample cell

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Rancho Cucamonga, CA, United States of America

Adam S Chaimowitz