YOKOGAWA ISC450G User Manual

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IM 12D06D05-01E
5-4. Calibration settings
Air adjust limit
To avoid cable influences on the measurement,
a“zero”calibrationwithadrysensormaybe
done.Ifaconnectionbox(BA10)andextension
cable(WF10)arebeingused,“zero”calibra-
tion should be done including this connection
equipment.
As the calibration is performed in air the
resistivity is infinite (open connection). Higher
conductivity values than the air adjust limit
indicate the cell is not in air or is still wet. To
prevent wrong air calibrations a limit must be
given here.
Note
The temperature compensation should be set
to NaCl when confirming zero at air adjust.
c.c. high limit
Highlimitofthecellconstantexpressedin%
of nominal value. During calibration this value
is used to check if the calibrated cell constant
remains within reasonable limits.
c.c. low limit
Lowlimitofthecellconstantexpressedin%
of nominal value. During calibration this value
is used to check if the calibrated cell constant
remains within reasonable limits.
Stabilization time
During calibration the stability of the measure-
ment is constantly monitored. When the value
iswithinabandwidthof1%overaperiodofthe
stabilization time, the calibration is considered
stable and the calibration may be completed.
Calibration Interval
A user defined interval in which a new calibra-
tion should take place. If the interval is ex-
ceeded the instrument will give a warning or a
fail (user definable in error configuration 2/3)
5-5. Concentration
Concentration has a direct relation with the
conductivity value at reference temperature.
This relation is built in every matrix which are
used for temperature compensation. These
can be found in: Commissioning >> Meas-
urement setup >> Temp. compensation >>
Method
Byselectingoneofthematricesfortem-
perature compensation directly gives the
concentration value on the main display. If
another temperature compensation method is
chosen (NaCl or T.C.), the relation between the
conductivity at reference temperature and the
concentrationisobtainedfromthe“Concentra-
tiontable”.
Additional table
This 21x2 user defined concentration table is
used to come to more accurate concentration
values compared to the temperature compen-
sation matrix. Enabling this additional table
overrules the concentration values obtained
from the matrix (if used).
Unit for table
The way the concentration values are pre-
sented to the user. Changing the unit will not
result in a re-calculation of the table.

YOKOGAWA ISC450G Specifications

General

Brand	YOKOGAWA
Model	ISC450G
Category	Media Converter
Language	English