Temperature Control
Oven temperature calibration
54
INITIAL
TIME
RATE
OVEN
FINAL
TIME
STATUS
RUN
NOT
READY
ACTUAL SETPOINT
PASSED SELF TEST
Message Display, Power Failure and Recovery
Figure 3-8
Heated zones return to their respective setpoint values, after which the
oven returns to its setpoint value.
If
OVEN TEMP
is displayed after recovery from a power failure, and if
the oven was ON before the power failure, the oven display shows the
actual oven temperature value, and cycles between showing the
setpoint value and OFF until other zones achieve their respective
setpoint temperatures.
The oven can be switched ON through the keyboard at any time,
without waiting for heated zones to first come to correct temperature.
An analytical or column compensation run in progress at the time of a
power failure is aborted; similarly, a keyboard entry in progress is
aborted.
Oven temperature calibration
To maximize precision with respect to retention time information,
particularly if retention times are to be compared between
chromatographs, it may be necessary to calibrate oven temperature in the
range of interest using an independent temperature•measuringdevice.
With the factory•setcalibration difference value of 0 (zero), displayed
oven temperature is accurate to within 1% of the actual temperature,
expressed in
K (Kelvin).
