Oven Ramp Rates - Agilent Technologies 7890 Series Advanced Operation Manual

Oven ramp rates

Advanced Operation Manual
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."
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
the Oven Insert" on page 154), increases oven ramp rates for
the back column. Table 39
Table 39

Oven ramp rates

100/120 V oven
ramp rate (°C/minute)
Temperature Without
range (°C) insert
50 to 70 75
70 to 115 45
115 to 175 40
175 to 300 30
300 to 450 20
Columns and Oven
lists typical oven ramp rates.
200/220/230/240 V oven
ramp rate (°C/minute)
With optional Without
insert insert
120 120
95 95
65 65
45 45
35 35
4
"About
With optional
insert
120
120
110
80
65
151