Stratos Multi E401N
199
13.4 TAN Options
The functions described below are available after enabling their TAN options.
13.4.1 pH Buffer Table: Entry of Individual Buffer Set (FW-E002)
The FW-E002 add-on function must be activated in the device with a TAN for the specifiable buffer ta-
ble.
You can enter an individual buffer set with 3 buffer solutions. To do so, enter the nominal buffer values
for the correct temperature (0 ... 95 °C/32 ... 203 °F, 5 °C/9 °F step size). Then this buffer set is available
as “Table“ in addition to the permanently set standard buffer solutions.
Conditions for the specifiable buffer set:
• All values must lie in the range pH 0 ... 14.
• Maximum difference between two adjacent pH values (5 °C step width) of the same buffer
solution: 0.25 pH units.
• The values of buffer solution 1 must be lower than those of buffer solution 2.
• The difference between values for identical temperatures must be greater than 2 pH units. An error
message appears if your input is incorrect.
The pH value at 25 °C/77 °F is always used for buffer display during calibration.
Settings can be changed in the
Buffer Table
submenu:
Parameter Setting
System Control
Buffer Table
01.
Select buffer to be entered. Enter the values for 3 complete buffer solutions in ascending order
(e.g. pH 4, 7, 10). Minimum distance: 2 pH units.
02.
Enter the nominal buffer value and all temperature-corrected buffer values and press
enter
to
confirm.
The individual buffer set is selected in the menu:
Parameter Setting
[I] [II] … pH
Cal Presettings
Calibration mode
: Calimatic
Buffer set
: Table
