pHotoFlex
®
Turb
Operation
57
ba75976e07
09/2021
Aligning a cell
Marking a cell
In order to quickly bring a cell into the optimum alignment, it is helpful to mark
the optimum alignment of the cell once it has been determined. This shortens
every measurement or calibration with this cell considerably.
The marking can be made, for example, on a label on the cap of the cell.
1 Press the
<M>
key (long pressure) repeatedly until the
Turbidity
measuring mode is selected.
2 Clean the cell (see section 5.2.2).
3 Insert the cell (see section 4.2).
4 Align the cell:
Press and keep the
<START/ENTER>
key depressed.
Slowly rotate the cell once completely in small steps (by 360 °).
After each step, wait briefly until the displayed measured value
is stable.
Turn the cell back to the position with the lowest measured val-
ue.
To keep the drift as low as possible, the time for aligning the cell
while the
<START/ENTER>
key is pressed is limited to 30 sec-
onds. After this time, the meter starts the measurement automat-
ically.
5 Release the
<START/ENTER>
key.
Measurement starts. The measured value is displayed.
6 Mark the optimum alignment of the cell.
The cell is prepared for the shortened measuring or calibration
procedures.
