Patent ID: 6454931
Filing Date: 2002-09-24
Classification: G01N

Abstract:
A method for quantifying a component of a gas emission comprising:taking a sensor including a first pumping cell which includes first electronics which maintain a first chemical environment adjacent the first pumping cell and measures a first pumping current, and a second pumping cell which includes second electronics which maintain a second chemical environment adjacent the second pumping cell and measures a second pumping current; contacting the sensor with a gas emission; measuring the first and second pumping currents; and quantifying a component of the gas emission using the equation Xi=H(Ip1)Ã—(Ip2âˆ’C(Ip1)) where Xi is the concentration of the component being quantified; Ip1 is the first pumping current; Ip2 is the second pumping current; H(Ip1) is a constant; and C(Ip1) is a non-constant function of the first pumping current.