wtw Turb 555, Operating Manual

Page: 43 / 82

Turb 555 / Turb 555 IR Operation
43 ba41113e07 04/2009
22 Press the
1
key.
During the calibration step, the
c
and
s
sym-
bols flash. The lower display line shows the remain-
ing measuring cycles until the end of the calibration
step. Then, the calibration step is carried out once
more.
23 Wait until the calibration step is finished.
The instrument asks you to insert the next calibration
standard (0.02 NTU) once more.
24 Insert the 0.02 NTU calibration standard into the cu-
vette shaft.
25 Align the cuvette.
26 Press the
1
key.
During the calibration step, the
c
and
s
sym-
bols flash. The lower display line shows the remain-
ing measuring cycles until the end of the calibration
step.
27 Wait until the calibration step is finished and END ap-
pears in the lower display line.
28 Press the
1
key.
The calibration program is finished. The instrument
automatically returns to the normal measuring mode
(
a
is displayed). If a printer or PC is connected
and switched on, a calibration record is automatically
output (see section 4.6.3 C
ALIBRATION RECORD
).