| 摘要 |
An attachment and alignment device 300a is provided for mounting two or more separate components of an optical analysis system, to use common entrance and exit apertures for optical measurements across a measurement space 301 such as a stack, combustion chamber, duct or pipeline, such that the optical paths from the light sources to detectors are substantially identical, enabling multiple optical measurements over identical optical paths with identical ambient conditions. The device 300a comprises first attachment means to attach the device at one side of the measurement volume; and second and third attachment means enabling independent attachment of at least two units which each comprise either a light source unit, a light detection unit or a combination unit. The device 300a includes means for optical alignment, such as a beam-splitter (330a, Fig. 3A), between the optical path and the attached units. The device 300a may comprise a hollow body defining a plurality of partial optical pathways; a plurality of flanges (310a-d, Fig. 3A) at ends of the pathways; and at least one beam splitter or beam splitter holder that is releasably held in the hollow body portion. The device is useful in absorption spectroscopy. |
