Functions and setup of the contrAA 600
contrAA 600
Edition 01/2014
31
Fig. 13
Furnace jacket, adapters and inserts
No. Furnace part / insert
Function
1
Platform (sample carrier)
Accommodates solids samples.
2
Adjusting aid for SSA 600
Adjusts the solid autosampler SSA 600.
3
Pipetter insert
Funnel opening to the pipetting channel.
4
Solid adapter
Seals the pipetter opening.
5
Adjusting aid
Adjusts the autosampler AS-GF.
6
Electrode
Contacts tube wings.
7
Furnace jacket
Accommodates the graphite tube.
Table 5
Furnace parts and inserts
5.3.4
Radiation sensor
A measurement arrangement for recalibrating the tube temperature is located on the side of
the graphite tube furnace, transversely to the beam direction (7 in Fig. 20). This radiation
sensor receives radiation from inside the graphite tube on a semiconductor receiver. Using
two wavelengths for detection, a quotient signal is derived for temperature measurement
which is independent of the degree of radiation of the graphite tube. Recalibration takes
place when formatting the graphite tube.
5.3.5
Furnace camera
The furnace camera is activated via the software. A separate window with the image of the
furnace camera appears on the ASpect CS desktop. It monitors the process, beginning with
the injection of the sample into the graphite tube through to completion of drying. The dipping
of the dosing tube into the graphite tube, the dispensing of the sample and other compo-
nents as well as the drying procedure can be controlled and corrected if necessary. The
furnace camera is deactivated automatically prior to the pyrolysis.
A lighting device is attached to the side of the furnace to illuminate the graphite tube that is
activated when the furnace camera is switched on (6 in Fig. 20).
