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3.7.5. INTERFACE SETTINGS
The Interface Settings sub-menu in Settings has an additional
three sub-menus which include:
• Temperature Difference
• pH Set-up
• Factory Diagnostics
3.7.5.1 Temperature Difference (offset)
The temperature difference function allows the user to fine-
tune the temperature setpoint of the system. Although the
temperature setpoint for the system can be set in the Heat
Menu, the actual temperature for the system may not heat
to the exact setpoint. This function allows the user to adjust
the temperature of the chamber and bottle individually
so the exact temperatures can be reached. This is referred
to as a temperature offset (“TEMP OFFSET” on chamber).
Pressing SELECT or ALL have the same function in this menu
as previously described. Pressing ENTER will save the values
for future experiments.
3.7.5.2 pH Set-up Menu
The temperature is an important parameter in the calibration
formula and is obtained automatically if AUTO is selected in
the temperature compensation, as shown below. If MANUAL is
chosen, the manual temperature is used in the pH calibration
formula, and the temperature probe is deactivated. In the
MANUAL mode, the temperature of the calibration buffers is
measured with a thermometer and entered manually in the
Manual temp. Value line
