HP 5890 II, 5890 II Plus 49

Temperature Control

Programming oven temperature

HP 5890 oven temperature programming allows up to three ramps, in any combination of heating or cooling. Keys defining an oven temperature program include:

INIT TEMP	A setpoint temperature value at which the oven is
	maintained at the beginning of a temperature•programmed
	run. This is also the temperature to which the oven returns
	at termination of the temperature•programmedrun.
	When not in a run, the setpoint value for	INIT TEMP
	equals OVEN TEMP .
INIT TIME	Time for which oven temperature is held at	INIT TEMP .
RATE	Rate at which the oven is to be heated or cooled.
RATE
FINAL TEMP	Temperature the oven attains at the end of a heating or
	cooling ramp.

In a multiple•ramptemperature program, final temperature for one ramp is also the initial temperature for the next ramp.

FINAL TIME	Time period over which oven temperature is held at
	FINAL TEMP .

In a multiple•ramptemperature program, final time for one ramp is also the initial time for the next ramp.

total elapsed time for a run cannot exceed 650 minutes: at 650 minutes, the run terminates and oven temperature recycles to INIT TEMP . To know calculated total length of time anticipated for a run, TIME is pressed repeatedly until a NEXT RUN display is obtained.