公开(公告)号：US09983122B1

公开(公告)日：2018-05-29

申请号：US15667851

申请日：2017-08-03

Applicant: Sea-Bird Electronics, Inc.

Inventor： Ronnie Van Dommelen ,  Burkhard Plache ,  Keith Brown ,  Wesley D. Strubhar ,  Andrew H. Barnard ,  Scott Feener

IPC: G01J1/42 ,  G01N21/27 ,  G01N21/33 ,  G01N21/25 ,  G01J3/10

CPC classification number: G01N21/274 ,  G01J3/10 ,  G01N21/255 ,  G01N21/33 ,  G01N2201/0621 ,  G01N2201/12753 ,  G01N2201/12792

Abstract: Technology is provided for an aqueous solution constituent analyzer. The analyzer includes an ultraviolet light emitting diode (LED) with a current source providing variable current thereto. A spectrometer is positioned for receiving light from the LED transmitted through an aqueous solution. A controller receives radiant flux data for a plurality of wavelengths and determines, based on the radiant flux data, a usable number of the plurality of wavelengths that satisfies a relative uncertainty threshold. The controller can increase the current to the LED if the usable number of wavelengths is less than a minimum threshold and calculate a concentration of a constituent of interest in the solution. The controller can also determine a peak wavelength of the plurality of wavelengths having the greatest intensity value, and decrease the current level to the LED if the peak wavelength has an intensity value greater than a saturation value for the spectrometer.