Temperature Control
Cryogenic (sub-ambient) oven control
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Cryogenic (sub-ambient) oven control
Liquid N or liquid CO cryogenic options are for operation at
temperatures less than about 7
C above ambient. This is done through
operation of a valve which opens when coolant is demanded and closes
when the setpoint temperature is reached.
When you press
gold CRYO PARAM CRYO PARAM CRYO PARAM
you scroll
through a series of displays for choosing cryogenic options. These options
include CRYO for operation during the entire run, CRYO BLAST, for very
fast cool down between runs, and AMBIENT to regulate on and off times
to optimize coolant use.
For operation during runs at
subambient temperatures.
ACTUAL SETPOINT
CRYO ON
ACTUAL SETPOINT
CRYO BLAST ON
For very fast cool down
between runs.
ACTUAL SETPOINT
AMBIENT 25
Lets you regulate Cryo and
Cryo Blast on and off times to
optimize coolant use. Default is
25
C and need not be changed
unless
ambient differs by 10
.
Cryogenic options
Figure 3-3
The following figures show the oven temperature profile for a typical run,
showing the on and off times for CRYO and CRYO BLAST.
