Xylem WTW Turb 750 IR Operating Manual page 39

®
Turb 750 IR/T
ba77233e05 06/2023
Turbidity Calibration
i 3-P StdCAL
i Insert standard:
1000 FNU/NTU
i Lot number: 12324abcd
i Press and hold <START>
i Align sample
If the Lot number function is activated, the lot numbers en-
tered for each standard are displayed as info.
5 Insert the cell with the displayed calibration standard (here e.g. 1000
FNU/NTU) in the cell shaft (see section 4.4).
6 Align the marking on the cell cap with the marking at the cell shaft.
or
Determine the suitable position of the cell in the cell shaft (see D
TERMINING A SUITABLE POSITION IN THE CELL SHAFT
Turbidity Calibration
i Turb. = 1000 FNU/NTU
i Start calibration
by releasing <START>
7 Release the <START/ENTER
Measurement of the calibration standard begins.
Before measuring the third calibration standard of 0.02 FNU/NTU
you can exit the calibration with <ESC> at any time.
The new calibration data are discarded. The old calibration data
are used.
8 Repeat the steps 4 - 6 with the calibration standards 10.00 FNU/NTU
and 0.02 FNU/NTU.
After measuring the 0.02 FNU/NTU calibration standard, the calibra-
tion result is displayed.
The calibration is complete.
9 Confirm the calibration result with <START/ENTER
The calibration record is displayed.
, page 18).
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Operation
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