Installation and start-up
44
Edition 01/2014
contrAA 600
Clean out/evaporation of iridium-coated graphite tube (HydrEA tech-
nique)
The following temperature program must be used for the iridium-coated graphite tube (see
also operating instructions for the accessories):
Clean-out
Evaporation
Temp. [°C]
2200° C
2600°C or more
Ramp [°C/s]
500° C/s
500° C/s
Hold [s]
10 s
Do not select a higher hold time than 10 s
otherwise this may exceed the load limit of the
furnace.
Clean out or evaporation can be repeated several times.
6.5
Complete and install the AS-GF autosampler
6.5.1
Installing the AS-GF
CAUTION! ELECTRONICS MAY BE DAMAGED!
Switch off the contrAA 600 before installing the AS-GF!
The electronics of the contrAA 600 are very sensitive. Damage due to connection or discon-
nection of electrical plug-in contacts may occur.
NOTE
Choose a safe location for the completion of the AS-GF.
1.
Switch off the contrAA 600 before installing the AS-GF!
2.
Install the tube guide (5 in Fig. 26) to the autosampler arm of the AS-GF and attach
using the lock screw.
3.
Screw the dosing tube into the right opening of the T valve (10 in Fig. 26) on the dosing
unit. Feed the dosing tube through the tube holder on the back of the autosampler and
on the autosampler arm. Insert the dosing tube into the tube guide (5 in Fig. 26) until the
tube end protrudes approx. 8 mm from the tube guide at the bottom; attach the tube us-
ing a clamp nut.
4.
Plug the control cable into the socket at the back of the AS-GF and lock it in place.
5.
Hang the AS-GF on the supports in the sample chamber (1 in Fig. 22 p. 40). Using a
spirit level, check whether the autosampler is suspended horizontally; if necessary, align
the autosampler using the depth-adjustable stop in the sample chamber (4 in Fig. 22
p. 40).
