Patent ID: 8399839
Filing Date: 2013-03-19
Classification: G01N

Abstract:
1. An infrared optical gas-measuring device comprising: a gas inlet opening for a gas sample to be analyzed in an infrared optical gas sensor, the gas inlet opening comprising two slotted or perforated disks, each of said disks defining transparent and gas-permeable elements and nontransparent and gas-impermeable elements; an outer housing; at least one infrared radiation source, said slotted disks or perforated disks comprising a surface reflective in the infrared optical range on the underside of each of said nontransparent and gas-impermeable elements and said slotted or perforated disks being arranged one on top of another at a distance such that the transparent and gas-permeable elements of one of said two slotted disk or perforated disks are covered in a vertical axial direction by the nontransparent and gas-impermeable elements of another of said two slotted or perforated disks, wherein said surface reflective in the infrared optical range of each of said nontransparent and gas-impermeable elements of an upper of said slotted disks or perforated disks reflects infrared radiation of said infrared radiation source, that has passed through said each of said transparent and gas-permeable elements of a lower of said slotted disks or perforated disks back through said transparent and gas-permeable elements of said lower of said slotted disks or perforated disks.