wtw TresCon NOx-N, Operating Manual

Page: 89 / 112

NOx-N Maintenance
3 - 41 ba43110e05 01/2011
Note
The meaning of the calibration data is described in section 3.9 V
IEWING
CALIBRATION DATA OF THE MULTI
-
POINT CALIBRATION
on page 3-33.
Note
Calibration error: if the instrument could not determine any valid
calibration data, for example because wrong standard solutions were
connected, "err" appears on the right side of the time. The analyzer
module switches to the STOP mode. Repeat calibration using the
correct standards or quit the menu with
4
to continue measuring
with the last valid calibration.
18 Unscrew the lid (orange) with the suction tube from the last
calibration standard.
19 Thoroughly rinse the suction tube with distilled water.
20 Connect the sample tubing to the overflow vessel again.
21 Connect dist. H2O to the connection of dist. H2O (red) again.
Only use distilled water free of contamination (e.g. softeners).
22 Return to the service menu with
4
.