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E range
Fitting the optional insulating plugs and radiation shield
For optimum temperature uniformity insulating plugs or radiation shields should be placed in the
work tube ends as shown in
the stem (8) of the insulation plug assembly lines up with the end of the work tube.
If a gas/vacuum end seal is fitted (4), either horizontally or vertically, the insulation plug hooks
onto the end seal hook; see
Alignment of radiation shields is similar to that of insulation plugs see
If a metal work tube is being used in the furnace, ensure that it is earthed. See the safety warning
in section 3.5.
Figure 2-21. Cross-section view showing
standard length work tube insulation plug
fitted.
Index to numbered items in
and
Figure 2-20
Figure 2-22
1. Extended work tube guard
2. Standard work tube
3. Extended work tube
4. Gas/vacuum end seal
5. Insulation plug for standard work tube
6. Insulation plug for extended work tube
7.
Radiation shield for extended work tube
8.
Insulation plug stem
14
,
Figure 2-21
Figure 2-20
.
Figure 2-20
Figure 2-20. Cross-section view showing extended work tube
insulation plug fitted.
,
Figure 2-21
Figure 2-22. Cross-section view showing extended work tube
radiation shield fitted
MF65-1.01
and
. With an extended work tube
Figure 2-22
Figure 2-22
.
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