Columns And Oven; About The Oven; Oven Safety - Agilent Technologies 7890 Series Advanced Operation Manual

4

Columns and Oven

About the Oven

Oven safety

146
Table 38 Oven capabilities
Capability
Temperature range
Maximum temperature
Temperature programming
Maximum run time
Temperature ramp rates
For safety, opening the oven door turns off power to the
oven heater, fan, and cryogenic valve (if installed) but
maintains the setpoints in memory.
Closing the oven door returns the oven to normal operation.
If the oven cannot attain or maintain an entered setpoint
temperature during normal above- ambient operation, a
problem is assumed and the oven is switched off.
Possible problems include:
• The oven vent flaps not working
• The oven fan, heater, or temperature sensor not working
properly
• An electronic problem
When a shutdown occurs, the Off line in the oven parameter
list blinks and the oven remains off until switched on again
by pressing [Oven][On] or by editing the Temperature setpoint.
Range
–80 °C (liquid N ) or –40 °C (CO
2
the configured limit
450 °C
Up to six ramps
999.99 minutes
0 to 120 °C/min, depending on
instrument configuration
Advanced Operation Manual
) to
2