Apex Classic Setup and Programming Guide v2.2
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arrow keys to select the range for that port, press OK when done or Exit to
discard changes.
Web Interface: This option is not available from the Web Interface.
TEMPERATURE COMPENSATION
Conductivity measurements are temperature dependent. The degree to which
temperature affects conductivity varies from solution to solution. Seawater
typically has a temperature correction factor of 2.1 to 2.3 %/C. In order for the
PM2 to automatically compensate for changes in conductivity as the temperature
of the water changes, you must connect a temperature probe to the PM2 and set
the temperature compensation as described below.
To set the Temperature Compensation:
Apex Display: Setup – Cond Setup – Temp Comp – use the up/down
arrow keys to select the temperature compensation in %/C, press OK when
done or Exit to discard changes.
Web Interface: This option is not available from the Web Interface.
NOTE: Leave the Temperature Compensation set to 0.0 if you are not using
temperature compensation or do not have a temperature probe attached to the
PM2. Other temperature probes on the system cannot be used for temperature
compensation of the conductivity probe.
CONDUCTIVITY PROBE CALIBRATION
NOTE: Set the Conductivity Range and Temperature Compensation settings
before calibrating the Conductivity Probe. See the previous section for
instructions on setting these parameters.
To calibrate a Conductivity probe:
Apex Display: Setup – Cond Setup – Cond Calibrate –
1.
If you have more than one Conductivity probe enabled on your
system, use the up/down arrow keys to choose the probe you wish to
calibrate, press Select.
2.
Remove the conductivity probe from any solution and dry it off. Wait
for the numbers on the bottom of the LCD screen to stop changing. It
does not matter what value is displayed only that it is not changing.
When the display stops changing press the select button.
