6
A DS 4 20
| D I SS O LV ED OX YG EN SEN S O R | O I/A DS 4 2 0 - EN R E V. B
3 Sensor setup menu
Dissolved oxygen
Menu
Comment
Default
Tag
Enter an alphanumeric sensor tag (16 characters maximum) to identify the sensor
on the
Operator Pages
.
TAG1
Measurement Type
Select the required probe type:
• Dissolved Oxygen / % Saturation
Note
. If a change is made the I/O sources are reset.
Dissolved Oxygen
Units
Select the measurement units:
• mg/L / ppm
ppm
PV Resolution
Select the PV Resolution:
• Normal / High
Normal
Range High
Set the span value in
Chart
and
Bargraph
views.
50 ppm (200 %)
Range Low
Set the zero value in
Chart
and
Bargraph
views.
0
Filter Type
Select the signal filtering type:
• None / Low / Medium / High
None
Salinity Unit
Select the required salinity units:
• PSU (Practical Salinity Units) or ppt (parts-per-thousand).
PSU
Salinity Correction
Required when monitoring water containing high quantities of dissolved salts:
•
enter the required value between 0 and 42 Practical Salinity Units (PSU).
•
leave at the default value of 0 PSU if salinity correction is not required.
0 PSU
Pressure Unit
Select the required barometric pressure units:
• mbar / mmHg
mbar
Barometric Pressure
Barometric pressure compensation.
Set the local barometric pressure to 506 to 1114 mbar (380 to 835 mmHg).
If the barometric pressure is unknown, leave at the default sea-level value of
1013 mbar (760 mmHg).
1013 mbar
Slope Limit
0.85 to 1.20
N/A
Offset Limit
-0.2 to 0.2
N/A
Reset To Defaults
Select to reset all
Sensor Setup
parameters to their default values.
N/A