wtw PhotoLab Spektral Operating Instructions Manual page 51

The short manual lists all of the steps necessary to
determine the concentration of a sample and to acti-
vate AQA2 at a glance (AQA = Analytical Quality
Assurance; AQA2 = Check of the entire system).
4.1 Measuring the concentration
4 Short manual
→ Put the photometer into operation
3 C
(see chapter
OMMISSIONING
→ To switch on the photometer, open the cover.
After the 15 minutes warm-up time (clock display
shows countdown) the photometer performs a
SelfCheck of the entire system and automatically
switches to the concentration measuring mode.
Measuring mode, concentration
→ Insert the round cell with barcode containing the
prepared sample
it clicks into place
or
→ First insert the AutoSelector
cell shaft, then insert the rectangular cell contain-
ing the prepared sample
cell shaft.
→ Align the line mark to the notch of the photometer.
If the select method menu is displayed,
align the line mark of the round cell or Au-
toSelector to the notch of the photometer.
The measured value appears on the display.
→ Repeat the measurement: Press
The duration of the measurement de-
pends on the measured value. The max-
imum duration is 10 s.
).
into the round cell shaft until
into the round
into the rectangular
.
21