Patent ID: 6607700
Filing Date: 2003-08-19
Classification: G01N,Y02A,Y10T

Abstract:
A time-averaging carbon monoxide dosimeter, that measures integrated carbon monoxide concentrations in air, comprising:a carbon monoxide sensor that changes optical properties as a function of carbon monoxide exposure, the sensor comprising a porous silica substrate coated with palladium and calcium chlorides, molybdosilisic acid, and sulfurous acid; a sensor enclosure having at least two optically transparent windows to provide a means for monitoring an optical change of the sensor; a photon measuring device selected from the group consisting of a spectrophotometer, and a simplified photon detection system, wherein the simplified photon detection system comprises a single- or dual-beam opto-electronic circuitry including at least one light emitting diode or laser diode, photodiode, a voltage sensing circuit, and a recording device for monitoring sensor optical change within a light spectral region of from 650 to 1,000 nanometers.