Temperature Control

Oven temperature calibration

Figure 3-8

 

 

ACTUAL

SETPOINT

PASSED

SELF

TEST

 

OVEN

 

 

STATUS

 

FINAL

 

RUN

RATE

TIME

 

 

 

INITIAL

 

 

NOT

TIME

 

 

READY

Message Display, Power Failure and Recovery

Heated zones return to their respective setpoint values, after which the oven returns to its setpoint value.

CIf 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.

CThe oven can be switched ON through the keyboard at any time, without waiting for heated zones to first come to correct temperature.

CAn 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).

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