JULABO FCW1600_1600S Recirculating coolers - Manual (Page 25)

Recirculating coolers
25
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 24



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