Hanna Instruments HI 3512 - Manual (Page 53)

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Select No TC in order to display actual conductivity (no temperature
compensation).
Select
MTC in order to automatically compensate conductivity using the
set temperature coefficient with the temperature manually selected by
the user.
Select
ATC in order to automatically compensate conductivity using the
set temperature coefficient with the temperature read from the sensor
inside the EC probe.
Range Select
Focus on the
Range Select item.
Press Modify to select ranging mode.
Use the ARROW keys to change selection.
Press Accept to confirm or ESC to exit without saving. If “Automatic” is
selected the instrument changes the range automatically according with
the input.
If one of the range is selected all the readings are displayed on the
corresponding range.
The readings will be displayed with maximum 6 digits. If the reading
exceeds the maximum number of digits for the fixed range, the maximum
value is displayed blinking.
Note: The Range Select parameter can be set only in EC, resistivity and
TDS range.
Cell constant
Focus on the
Cell Constant item.
Press Modify to change the cell constant value.