Turb
®
750 T
Operation
13
ba77234e04
07/2022
Carrying out a cali-
bration (example:
3-P StdCAL
)
4 Press the
<CAL
(4)
>
key.
The guided calibration with the selected calibration type starts.
Follow the instructions on the display.
5 Insert the cell with the displayed calibration standard (here e.g. 1000
FNU/NTU) in the cell shaft.
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
7 Release the
<START/ENTER
(.)
>
key.
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.
10 Confirm the calibration record with
<START/ENTER
(.)
>
.
The display shows instructions for the first measurement.
The valid calibration is indicated on the display as a status, e.g. [3-P
StdCAL].
i
Insert standard
1000 FNU/NTU
i
Press and hold <START>
i
Align sample
Turbidity Calibration
i
Turb.
= 1000 FNU/NTU
i
Start calibration
by releasing <START>
Turbidity Calibration
Summary of Contents for WTW Turb 750 T
Page 23: ......
