Hanna Instruments HI 98280 - Manual (Page 35)

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• The following messages will appear: “Storing data on probe, please wait...”,
“Updating GLP data, please wait ...” and “Calibration completed”.
• Press to return to the “Calibration” menu.
• To return to the main menu, press ESC repeatedly.
Note Note Note Note Note The user can perform a single point calibration with standard values.
To abort the procedure, press ESC after the first point is accepted.
If the DO input is not within the acceptable range, the message “Invalid
input” is displayed.
DO concentration
To calibrate the DO concentration range, a solution with known DO concentra-
tion value is needed.
• From the “DO calibration” menu, select the
“DO concentration” option, insert the known
value and press .
• When the reading is stable, press
to accept the value.
• When the messages “Storing data on probe, please wait...”, “Updating GLP
data, please wait ...” and “Calibration completed” appear, the calibration is
completed. To return to the “Calibration” menu, press .
• To return to the main menu, press ESC repeatedly.
4.4 CONDUCTIVITY CALIBRATION
For a correct conductivity calibration, the probe sleeve must be inserted.
The conductivity calibration menu includes 3 dif-
ferent types of calibration: Conductivity, Actual
conductivity and Salinity.
The “Conductivity” option allows a single point
calibration with a standard solution selectable
by the user. This calibration is temperature com-
pensated.
The “Actual conductivity” option allows a single point calibration with a custom
conductivity solution of known actual value (not temperature compensated).
The “Salinity” option allows calibration with a standard salinity solution.