Operating
46
HAAKE Phoenix II P1
Version 3.07
14.4.8 Example of a program
The progress of a program is explained in the following
example. The current set temperature should be 200
°
C. The
actual temperature is approx. 170
°
C. The unit runs without
cooling bath.
The following segments be programmed :
Segment:
T-START
T-ENDE
TIME
1
180
°
C
190
°
C
5 min
2
190
°
C
185
°
C
10 min
3
185
°
C
205
°
C
4 min
4
205
°
C
185
°
C
4 min
5
185
°
C
205
°
C
4 min
6
205
°
C
205
°
C
3 min
1. After starting the program the heating is switched off. If
you change to the main display, you see „IDENT“ flashing,
which indicates that control parameters are determined.
When RAMP starts flashing, the heating is activated to
reach the start temperature of segment no. 1.
2. The unit heats linear to the end temperature of segment
no. 1. Only towards the end of the segment the heating is
circled (symbol heater flashes). Three temperatures are
shown on the main display:
•
The end temperature of the segment;
•
The current actual temperature;
•
The current set temperature. This is the temperature
that should be achieved with an exact linear tempera-
ture gradient. The current actual temperature is slightly
lower.
3. In segment no. 2 a small negative temperature gradient
is given so that the bath is to cool down slower than with-
out controlling. During the whole run of segment no. 2 the
heating is circled (symbol heater flashes).
4. The temperature gradient of segment no. 3 is so high that
the heating of the unit is not sufficient. Thus the actual
temperature is below the set temperature and the curve
of the actual temperature is flatter.
5. At the end of the segment the actual temperature is still
below the end temperature, when the program starts seg-
ment no. 4. A negative temperature gradient is available.
As long as the momentary set temperature is higher than
the actual temperature at the beginning of the segment
the unit heats until the two temperature curves (i.e. set
and actual temperature) intersect.
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