Combustible gas e.g. methane, absorption-spectroscopic verification method, involves adjusting charge coupled device by automated adjustment system, and maximizing intensity of light transmitted by laser and received by device

摘要

The method involves transmitting an infra-red light on an optical path (6) from a wavelength modulatable infra-red laser (8) to a reflection system and from the reflection system to a charge coupled device (CCD) (12). The laser, the reflection system, and the CCD are adjusted by an automated adjustment system such that the light transmitted by the laser passes through the path from the laser by an open volume (4) to the reflection system and from the reflection system by the open volume to the CCD. An intensity of the light transmitted by the laser and received by the CCD is maximized. An independent claim is also included for a device for absorption-spectroscopic verification of combustible gas in an open volume.