Optical measuring head for a duct gas monitoring system
AssigneeSiemens Aktiengesellschaft
InventorsRikard Larking, Peter Schachinger
Life of this patent
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Abstract
An optical measuring head for a duct gas monitoring system is provided, the measuring head being mounted to an outer wall of a gas duct through which the duct gas flows. The measuring head has a longitudinal chamber which at one end opens into the gas duct and at the other end contains an active optical component. The chamber is flushed with a purge gas which, after flushing the chamber, is discharged into the gas duct. A gas line is installed between the chamber and interior of the gas duct at a point upstream of a discharge point and the purge gas is a branch-off of the duct gas.
Claims7
An optical measuring head for a duct gas monitoring system, the measuring head being mounted to an outer wall of a gas duct through which the duct gas flows, comprising:
- a longitudinal chamber which, at a first end, opens into the gas duct and, at a second end, contains an active optical component,
- wherein the chamber is flushed with a purge gas which, after flushing the chamber, is discharged directly into the gas duct,
- wherein a gas line is installed between a first section of the chamber, defined in part by the second end, and an interior of the gas duct at a point upstream of a discharge point,
- wherein the discharge point is at the first end of the chamber which opens into the gas duct, and
- wherein the purge gas is a branch-off from the duct gas.
Dependencies are inferred from the claim text.