Hanna Instruments edge EC HI2003, Manual

Page: 22 / 39

Operational Guide 22
EC Meter
Confi guration
Option Description Choices Default Basic mode
EC Range If AUTO is used,
edge EC ®
will
automatically
fi nd the correct
conductivity
range and
unit. If a fi xed
value is used,
measurements
made outside
the ranges are
considered
Out of Range,
but units will
remain fi xed
throughout the
measurement.
AUTO,
29.99 μS/cm,
299.9 μS/cm,
2999 μS/cm,
29.99 mS/cm,
200.0 mS/cm,
500.0 mS/cm AUTO Not available but
measurement
autoranges as
needed.
TDS Range If AUTO is used,
edge EC ®
will
automatically
fi nd the
correct TDS
measurement
range and
units. If a fi xed
value is used,
measurements
made outside
the ranges are
considered
Out of Range,
but units will
remain fi xed
throughout the
measurement.
AUTO,
14.99 mg/L,
149.9 mg/L,
1499 mg/L,
14.99 g/L,
100.0 g/L,
400 g/L AUTO Not available but
measurement
autoranges as
needed.
TDS Unit Select units of
measurement
for TDS
measurement. mg/L or ppm ppm Available to
select.
EC Salinity Scale Three
measurement
scales are
available
for salinity
measurement
in Seawater.
(Practical
Salinity Scale,
Percent Scale
and Natural
Seawater Scale). PSU, NaCl%, g/L NaCl% Not available.
Cell Factor (cm -1 ) Manual Calibration
This option may be used to perform a manual calibration in a custom standard.
1.
Rinse the pro be with a aliquot of standard and shake off excess solution.
2. Place the probe in the standard. The sleeve holes must be covered with
solution.
3. Press SETUP and use the ARROW keys to get to C.F. (cm
-1
)
4. Press Modify.
5. Use the pq keys to change C.F. (cm -1 ) until the display reads the Custom
Standard value.