Q150T Sample Preparation System
10473 - Issue 5
68
Q150T - Instruction Manual
7.10
Film Thickness Monitor (FTM)
If you have specified an FTM on the configuration of your Q150T it will be preinstalled.
To install the film thickness monitor (10362):
1.
Check the machine is not operating.
2.
Open the top cover fully so it rests against its backstop.
3.
Remove the glass chamber assembly.
4.
Fit the FTM assembly to the baseplate with two M3 x 8 socket cap screws (see
Figure 7-15
).
5.
Plug the FTM lead in to the BNC connector on the baseplate after removing the
dust cap.
6.
Refit the glass chamber assembly.
7.
Close the top cover assembly and press down firmly to secure the latch.
The crystal cover (see
Figure 7-15
) may be removed completely for cleaning or if the
FTM is in continual use.
Figure 7-15.
FTM (left); replacing the FTM crystal (centre); FTM lead (right)
7.10.1
Replacing the FTM crystal
1.
Check the machine is not operating.
2.
Press down firmly on the top cover to release the latch.
3.
Lift the top cover and rest it against its stop.
4.
Remove the glass chamber assembly.
5.
Unscrew the top cap of the crystal holder and withdraw (see
Figure 7-15
).
6.
Turn the cap upside down and remove the spring insulator assembly.
7.
Tip the old crystal (if fitted) out of the cap and fit the new crystal with the cap
inverted.
8.
Refit the spring insulator assembly to the cap.
9.
Screw the cap assembly back on to the crystal holder body.
10.
Refit the glass chamber assembly.
11.
Close the top cover assembly and press down firmly to secure the latch.
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