FLAME SAFETY SYSTEM FOR IN SITU PROCESS ANALYZER

摘要

A method (100) of operating a process combustion analyzer (10) having a measurement cell (36) is provided. The method includes exposing the measurement cell to exhaust of a combustion process where fuel (20) and oxygen (18) are combined in a burner (16) to produce a flame. The measurement cell is heated (102) to a temperature above a flashpoint of the fuel. When a condition is detected (108), such as a fault or abnormal situation, gas is directed (110) to the measurement cell (36) to form a gaseous barrier between the measurement cell (36) and unburned fuel (20) while the detected condition exists. Once the condition abates, the gas flow is disengaged and process combustion gas measurements are provided.