Absolute Reflectance Attachment
17.3 Installation in sample compartment
Caution! Contamination of mirrors!
Do not touch any mirror surfaces!
1. Put the accessory onto the front carrying rails of the sample compartment with its
clamping lever
(8) pointing frontward.
2. Push the accessory to the right-hand wall of the sample compartment as far as it will
go. Secure it in position by throwing over clamping lever
(8) to the right.
17.4 Operating principle
The absolute reflectance of the sample is determined in two steps:
Reference measurement Sample measurement
Fig. 17-2 Beam geometry in Absolute Reflectance Attachment
Reference measurement
Without any sample inserted turn carrier (3) with swivel mirror (4) up to the stop of
the "V" beam configuration.
Sample measurement
Turn carrier (3) with swivel mirror (4) by 180° in the position for "W" beam
configuration.
Withdraw sample holder
(10) from locating plate (2).
Put sample
(1) to locating plate and let sample holder return until it touches the
sample.
The measurement is taken at a reflecting angle of 7°.
116 User’s Manual SPECORD 200/205/210/250 – Accessories 07/2005
Analytik Jena AG
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