Q150T Sample Preparation System
Q150T - Instruction Manual
57
10473 - Issue 5
7.2.1
Shaping Carbon Rods for Pulsed Evaporation
WARNING
It is essential that you shape the tips of the carbon rods to the correct
profile to minimise the possibility of damage to the instrument due to
excessive currents.
For pulsed evaporation, one rod should be shaped to 1.2mm diameter x 5 mm long
using the shaper with the blue handle. The other should be flattened as shown in
Figure
7-4
.
Figure 7-4.
Recommended Carbon Rod shapes
The accessory pack contains a rod shaper (see
Figure 7-5
) that will accept 3mm and
6mm rods. To enable the shaper to accept 6mm rods, remove the collet by unscrewing
the collet screw and pulling the collet out.
Figure 7-5.
Carbon Rod Shaper (S8650/S8651))
To shape a carbon rod:
12.
Cut a 50mm length of rod.
Use only Quorum rods due to the varying diameter and quality of other
manufacturer’s rods. Quorum supply rods in two sizes: 3mm (C5422)
and 6mm (C5423).
13.
Hold the shaper stationary and insert the carbon rod until it touches the cutters.
Pull the cutter shaft out to its full extent.
14.
Gently tighten the thumb screw to hold the carbon rod in place.
15.
Holding the shaper body and, with very little force, gently turn the black knob on
the end of the shaper clockwise (when viewed face on).
16.
Keep turning the knob until the
tip of the rod touches the end of
the cutter shaft (5mm) as shown
opposite. Clear the carbon rod
dust as necessary.
17.
Undo the thumb screw and
withdraw the rod carefully to
avoid
damaging
the
newly
formed tip.
Thumbscrew
Insert rod
Cutters
Collet screw
Collet
Shaper body
Blue
knob
Summary of Contents for Q150T S
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