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JULABO FC600-T Recirculating cooler User Manual

Page 28

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Manual operation

28

6.3.2. Setting the control ratio for feed/return flow temperature

50 (%)

21°C

22°C

20°C

-0.5°C

+0.5°C

50

50

0 .. 100 (%)

21°C

22.5°C

20°C

0

100

H

ACTUAL

SET

In respect to the values for feed and return temperature
and the factor set with the key "H" an almost constant
temperature value may be maintained in the external
system. The control function quickly responds to changing
conditions (ambient temperature, reaction heat), and thus
spares the use of an external sensor.

The control ratio for feed and return flow temperature is
factory preset to "50:50".
For enabling optimum control performance for asymmetric
experiments, this ratio may be adjusted from 0 to 100 %.
0 %

control with full respect

to feed temperature

100 %

control with full respect

to return temperature.

Setting

:

Press the key

.

Follow the instructions under section 6.3.1.
page 27

A

B

H

40 (%)

21°C

22.5°C

20°C

40

Calculation example:
Look up the values for control ratio, actual feed and return
temperatures on the display by pressing the keys (A, B,
H).
Example:

RETURN

= 22.5 °C

FEED

= 20 °C

factor

=

40

%

Formula for calculating the actual value:

100

)

100

(

100

*

factor

factor

FEED

RETURN

ACT

ACT

C

C

 

22 5

40

100

20

100 40

100

.

(

)

ACT

C

 

21