Accumet XL 20, Руководство пользователя

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108
Salinity Setup
XL20, 30, 50 and 60 meters
To Select Cell Constant
This setup option allows you to select the appropriate cell constant
of the cell that you are using. There are three cell constants to
choose from. Each is used for a different range of salinity.
The Salinity Cell Constant is set the same way as previously
described in Conductivity Setup. See
‘Conductivity Setup: Stable
Indicator/Auto Read Mode/Cell Constant’ section for instructions.
To Set Default Temperature
Salinity is a temperature dependent measurement. This option allows you to select a default
temperature that the meter will use along with the temperature coefficient to calculate a
temperature corrected salinity measurement. If an ATC probe is used any value entered as a
default temperature will be overridden in favor of the actual measured temperature of the solution
provided to the meter by the ATC probe.
The default temperature can be set from -10°C to 110°C.
The Salinity Default Temperature is set the same way as previously described in Conductivity
Setup. See
‘Conductivity Setup: Select Reference Temperature’ section for instructions.
To Set Reference Temperature
This setup option allows you to select the reference temperature to be used in the determination
of the salinity of your sample. The reference temperature can be set from 15°C to 30°C.
The Salinity Reference Temperature is set the same way as previously described in Conductivity
Setup. See
‘Conductivity Setup: Select Reference Temperature’ section for instructions.
To Set Temperature Coefficient
The temperature coefficient is a value that reflects the degree to which
the sample’s salinity is affected by temperature changes. The meter will
use the set temperature coefficient along with the measured temperature
provided by the ATC probe to calculate what the salinity would be at the
selected reference temperature. If no ATC probe is being used, the
meter will use the set default temperature in the calculation.
The temperature coefficient can be set from 0 to 10.000%.
The Salinity Temperature Coefficient is set the same way as previously
described in section
‘ Conductivity Setup: Set Alarm Limits’ .
NOTE: The meter
and probe with
ATC will measure
temperature even
if the temperature
coefficient is set
to 0.0%, however
a temperature
correction will not
be applied to the
measurement.
When you change cell
constants your
calibration factor will
automatically reset to
default values. It is
recommended that
you standardize your
meter to establish a
new calibration factor.