Patent ID: 8635899
Filing Date: 2014-01-28
Classification: F23N,G01N

Abstract:
1. A method of operating a process combustion analyzer having a measurement cell, the method comprising: exposing the measurement cell to exhaust that has diffused through a diffuser, the exhaust being of a combustion process wherein fuel and oxygen are combined in a burner to produce a flame; heating the measurement cell to a temperature above a flashpoint of the fuel; detecting a flameout condition and directing a purge gas to the measurement cell to form a gaseous barrier between the measurement cell and unburned fuel while the flameout condition exists and reducing heater power during the flameout condition; upon loss of the flameout condition, disengaging the purge gas flow, restoring heater power and providing process combustion gas measurements; and wherein process gas measurements are provided substantially immediately after loss of the flameout condition.