Agilent Technologies LTM II Series, User Manual

Page: 12 / 94

1 Introduction
12 User Guide
Gasket
Insulation gaskets provide a tight seal to prevent heat from leaking through the LTM oven door,
resulting in unwanted heating of the module components. See
Figure 6 . These gaskets are
re-usable, but do age with use at high temperatures and should be replaced when they
become too fragile for reuse. Use two gaskets with the 5-inch transfer line module.
Figure 6. Gasket
Union brackets
The union brackets mount a union on the ends of the transfer line module. The unions connect
the LTM column to the column segments that lead to the GC inlet, detector, or other
components.
Agilent recommends using the CFT Ultimate unions and brackets supplied in the transfer line
module kit. See
Figure 7 . The CFT unions provide reusable fittings that should not require
retightening after thermal cycling.
Figure 7. CFT union and bracket
The CFT Ultimate union ferrules are available for the capillary column sizes listed in Table 1 .
Table 1 UltiMetal Plus Flexible Metal Fittings ferrules for Agilent CFT Ultimate unions
Fused silica capillary column id Recommended Ferrule
0.1 - 0.25 mm G3188-27501 (10/pk)
0.25 - 0.32 mm G3188-27505 (10/pk)
0.32 mm G3188-27502 (10/pk)
0.45 - 0.53 mm G3188-27503 (10/pk)
0.53 mm G3188-27506 (10/pk)