Mantis 5000 Especificaciones descargar pdf (Pagina 40)

Caution

Exercise great care when loading the centre-mount cuvette holder into the integrating

sphere, the sample holder is bulky and spilled sample solutions may damage the interior

surfaces of the sphere.

Small Spot Kit

A sample loaded at the DRA reflectance port or other sample site should be the same

size as the focused sample beam. If the sample is smaller than the beam spot, the

accuracy of the results will be reduced. If the sample surface fills the entire port, the

spectra obtained may be accurate but the signal-to-noise ratio is reduced by the

absorption characteristics of the sample. The small spot kit allows the user to focus a

small beam spot at the transmission port, reflectance port or sphere centre of the diffuse

reflectance accessory. The kit adds versatility to the DRA in three ways. The kit can be

used to reduce the sample beam size to measure small samples. It can be used to focus the

sample beam to measure a small portion of a larger sample. Or, it can be used with a

centre-mount sample holder to prevent the sample beam from overfilling the sample at

high measurement angles. The small spot kit consists of the following standard and

optional components:

Description Part number

Iris Assembly XXXX

Collimating Mirror

Assembly

XXXX

Lens Holder w/ (2)

Mounting Screws

XXXX

Transmission Lens XXXX

Centre-mount Lens XXXX

Reflectance Lens XXXX

Wire Attenuator Screen XXXX

Tool Kit, 3/16² hex key XXXX

Reflectance Port Aperture

Kit

XXXX

XXXX These part numbers were not available at the time of publishing, please refer to

the Varian website, for the most up to date information. See www.varianinc.com

The lens holder and rail are illustrated in the figure below. Each lens is marked by a letter

identifying the corresponding to the sample location and an arrow indicating the correct

orientation for installation.

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Mantis 5000 Especificaciones Pagina 40