wtw Turb 350 IR, Operating Manual, Page: 24 / 42

Operation
66
3 Insert the 1000 NTU calibration standard in the cu-
vette shaft so that it clicks into place.
4 Align the cuvette (see section 4.1.1 M
ARKING AND ALI
-
GNING CUVETTES
).
5 Press the key. The following display appears:
6 Wait until the calibration standard measurement has
been completed. At the end, the display shows the
turbidity value of the calibration standard. In addition,
CAL 2 appears on the display. This indicates that you
should insert the no. 2 calibration standard (100
NTU).
ERR
3
2
4
1 0 0 4
CAL
1
NTU
ERR
3
2
4
- r d -
NTU
CAL
1