Columns and Oven 4
Advanced User Guide 51
Final temperature Temperature of the oven at the end of a
heating or cooling rate.
Final time Time in minutes that the oven will be held at the
final temperature of a temperature-programmed rate.
Total length of a run is determined by its oven temperature
program. The maximum allowable time for a run is
999.99 minutes. If the program is still running at that time, the
run terminates.
See also “Post Run Programming.”
Oven ramp rates
The highest rate that you can achieve depends on many factors,
including the room temperature, temperatures of the inlets and
detectors, the amount of material inside the oven (columns,
valves, etc.), and whether or not this is the first run of the day.
Table 8 lists typical oven ramp rates.
Setting the oven parameters for constant temperature
An isothermal run is one in which the oven is maintained at a
constant temperature. For an isothermal run, set Rate 1 to zero.
1 Press [Oven] to open the oven parameter list.
2 Enter the oven temperature for the isothermal run.
3 Enter the number of minutes (Initial time) that you want the
oven to stay at this temperature. This time is the duration of
the run.
4 If Rate 1 is not already 0, enter zero for an isothermal run.
Table 8 Oven ramp rates
Temperature range (°C) 100 V oven
ramp rate (°C/minute)
200/220/230/240 V
oven
ramp rate (°C/minute)
50 to 70 30 75
70 to 115 30 45
115 to 175 30 40
175 to 300 30 30
300 to 425 20 20
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