Column Oven - Agilent Technologies 6890 Series Service Manual

540 Instrument Specifications

Column oven

Column oven
• Dimensions: 28 × 31 × 16 cm
• Operating temperature: 4° C above ambient to 450° C
–
–
• Temperature setpoint resolution: 1° C
• Maximum setpoint temperature rate: 120° C/min
• Actual programming rate: see Figure 540-1
• Cool-down rates: see Figure 540-2. Rates are greater when using the
optional oven exhaust deflector or cryogenic cooling.
• Maximum run time: 999.99 min
• Programming ramps/plateaus: 6/7
• Ambient rejection: <0.01° C per 1° C
• Column bleed compensation standard for two channels
Temperature (°C)
500
240 Volts
450
400
350
300
250
200
150
100
50
0
0 100 200 300 400
Time (sec)
Figure 540-1 Typical oven heatup rates,
6890 Series GC
2 of 6
with LN cryo: –80° C to 450° C
2
with CO cryo: –55° C to 450° C
2
120 Volts
500 600 700 800
Site Preparation
Agilent 6890 Gas Chromatograph Service Manual
Temperature (°C)
500
450
400
350
300
250
200
150
100
50
0
0 100 200 300 400
Time (sec)
Figure 540-2 Typical oven cool-down
rates, 6890 Series GC
500 600 700 800
Jun 2001