Patent ID: 6732568
Filing Date: 2004-05-11
Classification: G01N

Abstract:
A sensor probe that measures characteristics of a gas laden with liquid droplets, the sensor probe comprising:at least two heating elements, each heating element is connected in series with an insulator, a support frame, wherein the insulator connected to each heating element is connected to the support; a controller that controls operation parameters of each of the heating elements, the support frame being connected to the controller; wherein temperature is an operation parameter of the heating elements controlled by the controller, wherein a first heating element of the at least two heating elements is configured to be maintained at a first temperature and a second heating element of the at least two heating elements is configured to be maintained at a second temperature that is less than the first temperature, wherein the first and second temperatures are above a Leidenfrost transition temperature for the liquid at atmospheric conditions and a temperature of the gas laden within the liquid droplets is determined by a relationship between a function of the first and second temperatures of the first and second heating elements positioned in a flow of the gas having a velocity orthogonal to a longitudinal axes of the first and second heating elements and a ratio of power supplied to the first and second heating elements by the controller, the relationship is not affected by the velocity of the gas flow and the presence of the liquid droplets in the gas flow.