11 appendix, 1 mathematical relations, Appendix – Martin Christ RVC 2-33 CDplus User Manual
Page 65: Calculation example
RVC 2-33 CD
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Appendix
Version 01/2009, Rev. 1.21 of 25/11/2013 - sb
65
Translation of the original operating manual
11 Appendix
11.1 Mathematical Relations
The automatic processes under “Program administration” (see
chapter 6.3.5.2) are based on the following considerations:
Fig. 11.1:Graphical representation of the course of the control setpoint
Calculation of the control set value and of the gradient for the
temperature:
C/min]
[
sec
sec
sec
sec
tion
current
of
time
tion
tion
previous
of
value
set
tion
current
of
value
set
gradient
C]
[
sec
gradient
time
section
elapsed
tion
previous
of
value
set
value
set
control
Calculation example:
Section
Set values
Section time [h:min] Temperature [°C]
previous
...
30
current
1:00
60
C/min
0.5
min
60
30
min
60
30
60
C
C
C
gradient
After an elapsed section time of 30 minutes, for example, the control
set value for the temperature is:
C
C/
.
C
value
set
Control
t
45
min
5
0
min
30
30
min)
30
(
Calculation of the control set value for the vacuum:
]
[
10
sec
.)
sec
.
(
10
.
sec
(
10
.)
sec
.
(
10
mbar
value
set
control
time
tion
elapsed
section
current
of
time
section
t
prev
value
set
LOG
t
current
value
set
LOG
t
prev
value
set
LOG