JULABO CF41 Cryo-Compact Circulators - Manual (Page 61)

Cryo-Compact Circulators
61
1.
Use the keys to select the menu item.
2.
With the keys select the parameter (parameter blinks)
or
use the numeral keypad to enter the numbers (number segment
blinks).
3.
Press enter to store the new parameter or value.
Examples:
T
T
= 80.00 °C
T
M
= 79.73 °C
T
T
= 120.00 °C
T
M
= 119.51 °C
T
T
= 160.00 °C
T
M
= 159.34 °C
Control
>ControlType: intern
Selftuning: once
i Dynamic : aperio
Setpoints
>Setpoint1: 80.00°C
Setpoint2: 37.00°C
Setpoint3: 70.00°C
ATCalibration
>Sensor : intern
Status : no
Type : 3.point
TmpValue1: 80.00°C
CalValue1: 79.73°C
TmpValue2: xx.xx°C
CalValue2: xx.xx°C
TmpValue3: xx.xx°C
CalValue3: xx.xx°C
Example:
3-point calibration for internal control.
In the temperature range of 80 °C to 160 °C the calibration curve of the
temperature sensor (T
T
) should be assimilated to the actual temperatures
on the measuring point (T
M
).
 Press
the button. Under the menu >Control< set >ControlType<
to >intern< and press enter .
(ControlType: Can only be adjusted in the –OFF– condition)
 Press
start/stop .
Calibration procedure:
1. Press and set the first temperature value under
>Setpoint1< for example (example 1
st
value = 80 °C).
2. Wait until this temperature is maintained constant in the bath for
about 5 minutes.
3. Press the button and open the menu >ATCalibration<.
4. Set the following:
Menu item >Sensor< to >intern< ,
Menu item >Status< to >no< ,
Menu item >Type< to >3-point<.
5. Read the value of T
M
on the temperature measuring device and enter
the value under menu item >CalValue 1< (79.73 °C) using the
numeral keypad.
Press enter and the Cryo-Compact Circulator also stores the
value of T
T
as value for >TmpValue 1< (80.00 °C) .
The first of the 3 points is now calibrated.
6. Repeat the calibration procedure for 120 °C and 160 °C.