wtw Turb 350 IR, Operating Manual, Page: 26 / 42

Operation
68
3 If required, select another calibration standard no. x
(display CAL x) with the or key.
4 Insert the displayed calibration standard into the cu-
vette shaft so that it clicks into place.
5 Align the cuvette (see section 4.1.1 M
ARKING AND ALI
-
GNING CUVETTES
).
6 Press the key. The following display appears:
7 Wait until the calibration standard measurement has
been completed. At the end, the display shows the
turbidity value of the calibration standard. This indi-
cates that you should insert the next calibration stan-
dard x+1.
8 If required, select another calibration standard no. y
(display CAL y) with the or key.
ERR
3
2
4
1 0 0 4
CAL
1
NTU
ERR
3
2
4
- r d -
NTU
CAL
1