Xylem pHotoFlex/pHotoFlex Turb - Manual (Page 46)

Operation pHotoFlex / pHotoFlex Turb
46 ba75491d04 07/2006
4.5.6 Zero adjustment
The zero adjustment, i. e. measuring and storing the absorbance of a
cell filled with water, is necessary after the meter is switched on.
Additionally, we recommend to carry out a zero adjustment if the ambi-
ent temperature has changed.
Only perform the zero adjustment against distilled water in an optically
perfect cell. The zero adjustment must be performed separately for
each cell type.
5 Clean the cell (see section 5.2.2).
6 Insert the cell (see section 4.2).
7 Start the measurement with <START/ENTER>.
The measurement result is displayed when the measurement
is finished.
1 Press the <M> key (long pressure) repeatedly until the Pho-
tometry measuring mode is selected.
2 Press the <M> key (short pressure) repeatedly until the mea-
sured variable, Concentration is selected.
3 Press the <CAL/ZERO> key.
The menu for adjustment measurements opens up.
Photometry \ Absorbance
i Insert sample
i Start measurement
with <START>
16 mm 610 nm
01.02.05 15:12
Photometry \ Absorbance
0.532
16 mm 610 nm
01.02.05 15:12