1 mathematical relations, 11 appendix – Martin Christ RVC 2-33 CDplus User Manual

Page 72

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Rotational Vacuum Concentrator RVC 2-33 IR

11 Appendix

72

Version 08/2009, Rev. 2.1 of 02/12/2014 • sb

Translation of the original operating manual

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11 Appendix

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11.1 Mathematical relations

The automatic processes in the “Programmer module” menu (see chapter
6.5.3.2 - "Program administration") are based on the following
considerations:

Fig. 61: 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

Example:

Section

Set values

Section time [h:min]

Temperature [°C]

Preceding

...

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

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