Calibration - Xylem WTW Turb 750 IR Operating Manual

Operation
When to calibrate?
Calibration types
and calibration
standards
34
4.9

Calibration

 Routinely within the framework of the company quality assurance
 When the calibration interval has expired
 With a temperature change
The following calibration types can be selected for calibration:
Calibration Standards
type (FNU/NTU)
1000
3-P StdCAL
10.0
0.02
10.0
QuickCAL
2... 5
FreeCAL
30.0
PharmaCAL
18.0
6.00
3.00
0.02
Explanation
Guided calibration with three perma-
nently set calibration standard solu-
tions.
The 3-P StdCAL calibration is the rec-
ommended calibration type for most ap-
plications.
Guided calibration with a single calibra-
tion standard.
With the QuickCAL calibration value,
the calibration graph of the 3-P StdCAL
calibration in the lower measuring range
is adjusted.
The calibration is only successful if the
measured value for the standard devi-
ates from the value of the 3-P StdCAL
calibration by less than ±50 %.
The measuring range for measure-
ments with the QuickCAL calibration is
limited to the lower range (see
section 7.2 T
URBIDITY
Guided flexible calibration with 2 to 5
freely selectable calibration standards.
The nominal values for the calibration
standards are entered manually.
The order of the entered nominal values
corresponds to the order of the calibra-
tion standards during the calibration
process.
Guided calibration with 5 permanently
set calibration standard solutions.
The PharmaCAL calibration is the rec-
ommended calibration type for special
pharmaceutical applications.
®
Turb 750 IR/T
).
ba77233e05 06/2023