Stratos Multi E401N
96
5.12.4 Salinity Correction
The solubility of oxygen in water depends on its salinity. The correction is made by either directly
entering the salinity in g/kg, the chlorinity in g/kg, or the conductivity in μS/cm, and the temperature.
Settings can be changed in the Salinity Correction submenu:
Parameter Setting
[I] [II] ... Oxy
Salinity Correction
5.12.5 Messages
All values determined by the measuring module or sensor can generate messages.
Messages can be configured for the following process variables:
• Saturation %air
• Saturation %O
2
• Concentration
• Partial pressure
• Temperature
• Process pressure
Configuring Messages
Process variable limits for the monitoring range can be selected in the Messages submenu:
Menu Selection
Parameter Setting
[I] [II] [Sensor]
Messages
Messages [Process Variable]
Monitoring
• Max. Device Limits: Messages are generated when the process variable is outside the measuring
range. The “failure” or “out of specification” icons are shown; the corresponding relay contact is en-
abled. The current outputs can signal a 22-mA message (user-defined).
• Variable Limits: Upper and lower limits at which a message is generated can be defined for the
“failure” and “out of specification” messages.
Displaying Messages
Go to the Diagnostics menu if the “failure”, “maintenance required”, or “out of specification” icons are
flashing on the display.
Menu Selection
Diagnostics
Message List
All active messages are displayed in the “Message List” menu item with the following information: Er-
ror number, type (failure, maintenance required, out of specification), channel, message text.
You can scroll forward and backward using the up/down arrow keys.
The error message disappears from the display around 2 s after the error is cleared.
An overview of message texts with notes on troubleshooting can be found in the “Troubleshooting”
chapter. ➜
Malfunction States, p. 136
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