Anton Paar TTK 600, Reference Manual

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5 Putting TTK 600 into Operation
36 D52IB001EN-G
9. Repeat steps 5 - 8 until the offset ∆ω is < 0.05°.
10.Measure a reference sample to check the align-
ment. Compare the measured peak position val-
ues with a tabulated value.
5.3 Preparing the Cooling Equipment
5.3.1 Preparing the Liquid-Nitrogen Cooling
Fig. 41 shows a picture of the Liquid Nitrogen Equip-
ment (LTE) mounted on the liquid nitrogen container
(Dewar).
Fig. 41: LTE on Dewar
1 Low-Temperature Equipment (LTE)
2 Liquid Nitrogen Container (Dewar)
Read the instruction manual for the Dewar before
you carry out the following steps. Proceed as follows
to put the liquid nitrogen equipment in operation:
1. Remove the LTE (or the plug) from the Dewar.
2. Fill the Dewar as described in the instruction
manual for the Dewar.
3. Place the LTE in the Dewar.
4. Open the compressed-air source.
5. Set the pressure regulator to a pressure of
> 2.5 bar.
5.3.2 Preparing the Compressed-Air Cooling
Prepare the compressed-air cooling as follows:
1. Open the compressed-air source.
2. Set the pressure regulator to 6 bar.
TIP:
The cooling power and the air consumption in-
crease with increasing pressure. Adjust the air pres-
sure within the specified limits depending on your
experimental needs.
5.4 Checking the Instrument Condition
Before you start operation:
• Make sure that TTK 600 is installed correctly
and that no collisions between the sample
chamber and components of the diffractometer
can occur.
• Make sure that the cooling-water hoses con-
nected to the inlet/outlet nozzles are protected
against unintentional disconnection.
• Check whether all cables are correctly mounted
before switching on the CCU 100 Temperature
Control Unit.
• Check whether the foil on the X-ray windows of
the sample chamber is undamaged and clean.
• Make sure a sample holder is mounted inside
the sample chamber.
NOTICE
Remove the alignment slit before starting a mea-
surement. Heating the alignment slit will destroy
it.
WARNING
Cold Surface
Liquefied nitrogen can cause freezing of tissue,
or cryogenic burns, similar to frostbite to eyes or
skin upon contact. Always wear protective cloth-
ing (eye and face protection, thermally insulating
gloves) when handling the Low Temperature
Equipment or the liquid nitrogen container.
Follow all instructions given in appendix E and in
the instruction manual for the liquid nitrogen con-
tainer.
1
2
NOTICE
Always adjust the length of the cooling period to
the filling level of the Dewar. Do not operate the
cooling equipment with an empty Dewar. This
results in condensation of water inside the
Dewar.