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Access this menu to get information on the last performed calibration. The following screens will
automatically scroll on the display:
•
First screen: Beakers indicating the points (0% - 100% O
2
) on which the calibration was performed.
•
Second screen: OFFSET value of the sensor expressed in %.
•
Third screen: EFFICIENCY of the sensor, expressed in Slope %.
•
Fourth screen: Value of COMPENSATION of Salinity, expressed in ppt.
•
Fifth screen: Value of BAROMETRIC PRESSURE, expressed in mbar, at which the calibration was
performed.
•
Sixth screen: TEMPERATURE at which the calibration was performed.
•
Note
: The instrument accepts calibrations with Oxygen sensors with Slope % between 80 – 120%.
•
Outside this range of acceptability, the instrument does not allow to end the calibration and displays
the error message
SLOPE OUT OF RANGE
P5.7 DO Calibration deadline (Set Due Cal)
Access this menu to set a calibration deadline; this option is very important in GLP protocols.
•
By default, no calibration deadline is set. Use the directional keys to select HOURS or DAYS and access
with button
. Use the directional keys to change the number that appears in the center of the
display, entering the hours or days that must elapse between two settings, and confirm with
.
•
If a calibration deadline is set, the icon
is present on the display in measure mode.
•
When the calibration deadline is activated, the instrument prevents further measurements.
The error icon
and the icon representing the calibration deadline
flash on the display.
The string “
MAKE A NEW CAL
” invites the user to perform a new calibration of the pH sensor to be
able to work again.
Press the key
to start the calibration.
P5.8 Reset of the DO parameter (Reset Settings)
If the instrument does not work properly or incorrect calibrations have been carried out, confirm YES with
button
, in order to take all the parameters of the DO menu back to the default settings.
IMPORTANT:
The factory reset of the parameters
DOES NOT
erase the stored data.
P5.9 Temperature calibration
All the instruments of this series are pre-calibrated for a correct temperature reading. However, if there is a
difference between the measured and the real temperature (usually due to a probe malfunction), it is
possible to perform an offset adjustment of + 5°C.
After the connection of the temperature probe, use the keys
and
to correct the temperature
offset value and confirm with
.
