5Methods
84 Operation Manual
About Oven Temperature Programming
You can program the oven temperature from an initial temperature to a final temperature
using up to 20 ramps during a run.
A single ramp temperature program raises the initial oven temperature to a specified final
temperature at a specified rate and holds at the final temperature for a specified period of
time.
The multiple-ramp temperature program is similar. You can program the oven from an initial
temperature to a final temperature, but with various rates, times, and temperatures in between.
Multiple ramps can also be programmed for temperature decreases as well as increases.
Oven ramp rates
To use the fast oven ramp rates (a 240 V power option is required), your electric service must
be able to supply 200 V at 15 Amp.
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.
The optional oven insert for fast chromatography (see “About the Oven Insert”), increases
oven ramp rates for the back column. Table 4 lists typical oven ramp rates.
Initial temperature
Initial time 1
Rate 1
Final temperature 1
Final time 1
Rate 2 = 0
Initial temperature
Initial time 1
Rate 1
Final temperature 1
Final time 1
Rate 2
Final temperature 2
Final time 2
Rate 3 = 0
Table 4 Oven ramp rates
100/120 V oven
ramp rate (°C/minute)
200/220/230/240 V oven
ramp rate (°C/minute)
Temperature
range (°C)
Without insert With optional
insert
Without insert With optional
insert
50 to 70 75 120 120 120
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