JULABO FP51-SL Ultra-Low Refrigerated Circulators - Manual (Page 57)

FP51-SL
57
9.7. ATC Absolute Temperature Calibration, 3-point calibration
ATC is used to compensate for a temperature difference between the
circulator and a defined measuring point in the bath tank that may
develop for physical reasons.
ATC
internal external
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 (CT) is determined at the respective adjusted
working temperature. This value is then set on the circulator in the menu
>ATCalibration< under menu item > CTEMP X <.
This can be a 1-point, 2-point or 3-point calibration.
°C
TT
M B (INT) T
ATC (internal)
°C
TT
M
B (EXT)
T
Pt100
ext
ATC (external)
M = Temperature measuring instrument with temperature sensor
B = Bath tank (INTernal or EXTernal)
T = circulator
CT = Temperature on measuring point
TT = Temperature on circulator