Q150T S/E/ES Sample Preparation System Instruction Manual

7.11 Extended Height Cylinder
Q150T Sample Preparation System
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 standard glass cylinder assembly (10068).
5. Remove the M6 Cap head screw from the front of the pillar, slide the whole top
cover and inner pillar assembly upwards until you see the fourth hole line up and
replace the M6 cap head screw.
6. Place the extended glass cylinder assembly 10429 in place and close the top
cover.
The vent times will need to be extended to approx 200 seconds in profiles
using the extended height cylinder.
Figure 7-17. The extended height cylinder in position
7.12 Full Range Vacuum Gauge Assembly
The instrument must be returned to the factory for fitting this option as the
covers need to be removed.
As standard, the Q150T is fitted with a Pirani gauge with a measurement range of 1000
– 5x10 -4 mbar. The typical ultimate vacuum of the pumping system in a clean instrument
after pre-pumping with dry nitrogen gas is 5 x10 -5 mbar. When the vacuum is better than
5x10 -4 mbar the instrument simply displays “HiVac”. For users who need an accurate
value for the vacuum achieved before and during the coating process (for example,
when evaporating carbon it is desirable to achieve as good a vacuum as possible), the
Full Range Vacuum Gauge Assembly option (10428) extends the accurate measurement
range to 1000 – 5x10 -9 mbar.
Contact Quorum for further information.
10473 - Issue 3 64 Q150T - Instruction Manual