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Columns and Fittings
Column oven
11
Column oven
Inlet Ftg
Det Ftg
Nut Plate
Figure 1-1
The Column Oven
The oven door latch, located beneath the lower right corner of the door, is
pressed upward to open the door.
Motor•drivenflaps at the rear of the oven admit room air for cool down or
near•ambientoperation, so the door is kept closed except for access to
columns (the oven cools most efficiently with its door closed).
The oven can maintain temperature down to about 7
C above ambient
without auxiliary cooling. If lower temperatures are required, a
cryogenic valve (for either liquid CO
or liquid N ) is needed. Liquid CO
permits reliable temperature control down to -50 C; liquid N provides
reliable control down to -80
C. The maximum oven temperature is
450
C.