16
1.5.8.2 ►
METER PARAMETERS
menu command
►
METER PARAMETERS
is the menu command to view parameters of the
electrode system.
On selection of this menu command, the display shown in Fig. 1.12 shall
come up.
Fig. 1.12
The display shall show the following parameters of the probe DOC
measurement channel:
probe current in μA measured on calibration against atmospheric air and
reduced to temperature of 20
С and normal atmospheric pressure of 101.325 kPa
("
PROBE CURRENT
");
probe readings in ppb with the probe located in the "zero" solution on
calibration ("
SHIFT
").
Parameters of the probe in good working condition shall lie in the following
ranges:
"
PROBE CURRENT
"
from 1 to 10 μA;
"
SHIFT
"
from minus 2.9 to plus 2.9 ppb.
If the cursor is moved against "
PROBE CURRENT
" and key
is
depressed, the display shall show the time of the previous analyzer calibration as
show in Fig. 1.13.
Fig. 1.13
If the cursor is moved against SHIFT and the key
is depressed, the
display in Fig. 1.14 with the flickering number shall come up.
RECORD
ENTER
RECORD
ENTER
METER PARAMETERS
►
PROBE CURRENT 2.5 μA
SHIFT
+2.3 ppb
INITIAL SETTINGS
PROBE CURRENT
3.4
μA
LAST CALIBRATION
24 sep.
