BÜCHI Labortechnik AG
Product description | 3
Operation Manual ProxiMate™
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ence the measurement output leading to perceived measurement shifts. Use of the
down view mode prevents this from occurring. Additionally ProxiMate™ down view
also allows the use of large volume sample dishes. These are particularly useful with
samples that are inhomogeneous, as the measurement is averaged over a much
larger sample area.
3.3
Measurement modes
3.3.1
Diffuse reflection mode
1
3
2
Fig. 1: Reflection mode (up view geometry)
1 Sample
2 Sensor
3 Light
Non-translucent materials can be analyzed via diffuse reflection.
NIR light penetration is limited by the sample material. It interacts with the sample, is
refracted and diffusely reflected into the sensor. The reflected rays contain the spec-
tral information of the sample.
3.3.2
Transflectance mode
2
1
4
3
Fig. 2: Transflectance mode (up view mode)
1 Transflectance
cover
2 Petri dish
3 Sensor
4 Light
Содержание ProxiMate
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