VIO OXY 70 Manual De Instrucciones página 15

The table below shows the setup menu structure for the O
that the user can choose and the default value:
Program
P5.1
CAL 0
P5.2
SALT COMPENSATION
P5.6 CALIBRATION DATA
P5.7 SET DUE CAL
P5.8 RESET SETTINGS
P5.9 TEMPERATURE CAL
P5.1 Cal 0 (Calibration with Standard Zero 0
• Access this setup menu to select the calibration with Standard (supplied together with the device in
the carrying case) Zero Oxygen (next paragraphs "Calibration").
Once confirmed the operation, in measure mode on the lower left in the display, the beaker
•
indicates the point % 0
P5.2 Salt Compensation (manual)
The salinity of the sample to be measured influences the partial pressure of the dissolved oxygen. For a
correct measurement, it is necessary to set the salinity value of the sample. If oxygen measurements are
carried out on salt or sea water samples, it is important to modify the measurement by setting the indicative
salinity value of the sample. The default value is 0 ppt, access the parameter SALT COMPENSATION P5.2 of
the setup menu to change it and select the desired value between 0.0 ... 50ppt.
The average salinity of the sea water is 35ppt.
P5.6 Calibration data O
2
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 . Use the directional keys to change the number that appears in the centre 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
•
When the calibration deadline is activated, the instrument prevents further measurements.
•
The error icon and the icon representing the calibration deadline
UM Serie Oxy70Vio EN rev.0 28.05.2020
Description
-
0.0 – 50.0
-
NO – HOURS - DAYS
YES – NO
YES – NO
)
2
= 0 on which the calibration was performed.
2
SLOPE OUT OF RANGE.
is present on the display in measure mode.
14
parameter, and for each program the options
2
Options
) on which the calibration was performed.
2
flash on the display.
Factory Default Settings
-
0.0
-
NO
NO
-
.
EN