JULABO CF41 Cryo-Compact Circulators - Manual (Page 60)

Menu functions
60
Type:
A >1-point<, >2-point < or >3-point < calibration can be carried
out.
First geometrically define the location for calibration (measuring point
T
M
), then determine the temperature values of of the calibration
points.
The calibration type also determines the number of pairs of values
indicated on the LCD DIALOG-DISPLAY.
TmpValue: 1 or 2 or 3
Defined temperature value of the calibration point. This value is
automatically stored with >CalValue< and can be indicated for control
purposes.
CalValue: 1 or 2 or 3
The „Calibration value“ is determined with a temperature measuring
device and stored under menu item >CalValue<.
Example:
1-point calibration
°C
°C
T 1
T
3-point calibration
°C
°C
T 1
T
T
T
1 = Original curve
Principle:
For ATC calibration, in steady state the bath temperature at the location
of the temperature sensor (T
M
) is determined at the respective adjusted
working temperature. This value is then set on the Cryo-Compact
Circulator in the menu >ATCalibration< under menu item >Calvalue X<.
This can be a 1-point, 2-point or 3-point calibration.
°C
T
T
M
B (EXT)
Pt100
ext
T
T
M
M = Temperature measuring instrument with temperature sensor
B = Bath tank (internal or external)
T = Cryo-Compact Circulator
T
M
= Temperature on measuring point
T
T
= Temperature on Cryo-Compact Circulator