Hanna edge - EC Meter Configuration Options; Range, Unit, and Scale Settings; Manual Cell Factor Calibration

Operational Guide
22
EC Meter
Con guration
Option Description Choices Default Basic mode
EC Range If AUTO is used,
edge
EC
® will
automatically
 nd the correct
conductivity
range and
unit. If a  xed
value is used,
measurements
made outside
the ranges are
considered
Out of Range,
but units will
remain  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
 nd the
correct TDS
measurement
range and
units. If a  xed
value is used,
measurements
made outside
the ranges are
considered
Out of Range,
but units will
remain  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 o 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.
Setup/Installation 19
Logged data on the edge
EC
® can be transferred from the meter to a PC by
following these simple directions. Suitable operating systems include Windows
(Xp minimum), OS X or Linux.
1. Connect edge
EC
® to the PC using the supplied micro USB cable.
2. Turn on edge
EC
®.
3. Press SETUP and select “LOG ON EDGE”.
4. Press MODIFY then use pq keys to change to “EXPORT TO USB”.
5. Press CFM and the USB/PC Tag is displayed.
6. Press SETUP to exit.
The PC should detect the USB as a removable drive. Open the drive to view the
stored  les. Log  les are formatted as Comma separated values (*.CSV) and can
be opened with any text editor or spreadsheet program.
Note:
• Western Europe (ISO-88859-1) character set and English language are
suggested settings.
• Other  les may be visible depending upon computer settings. All  les
stored will appear in this folder.
• Adjust Font or column width, appropriately. Adjust the decimal places.
• All conductivity measurements will be displayed as μS/cm.
Interval logs is designated as EC Lots. ie. ECLOT001, ECLOT002, ECLOT003.
The Manual Lots are ECLOTMAN.
The Stability Lots are ECLOTSTAB. All stability logs, regardless of stability
setting, are located in the same stability  le for that measurement.
Click on the desired log to view data.
Note:
• If “ºC !” appeared in log data, the electrode/probe was used beyond it’s
operation speci cations and the data is not considered reliable.
• If “ºC !!” appeared in log data, the temperature sensor within the probe or
electrode is broken and the device should be replaced. Logged data should
not be considered reliable.
PC & Storage
Interface