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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
•
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
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
display, entering the hours or days that must elapse between two settings, and confirm with
If a calibration deadline is set, the icon
•
•
When the calibration deadline is activated, the instrument prevents further measurements.
The error icon
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
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
offset value and confirm with
SLOPE OUT OF RANGE
. Use the directional keys to change the number that appears in the center of the
and the icon representing the calibration deadline
to start the calibration.
.
) on which the calibration was performed.
2
is present on the display in measure mode.
and
18
flash on the display.
to correct the temperature
.
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