Pressing the right arrow on the OX. DIGITAL SENSOR line gives access to the following information:
• Sensor serial number
• Software version
• Hardware version
• Instant measurements of all available parameters for the sensor in question. In the case of the
OPTOD sensor: temperature, oxygen as a saturation %, oxygen in mg/L, and oxygen in ppm.
7.1.4 Oxygen measurement configuration
The dissolved oxygen content expressed in mg/L, for a given solution, depends on the temperature of the
liquid, salinity and atmospheric pressure if that solution is in contact with the atmosphere.
In terms of temperature, the OPTOD sensor generally uses its own temperature measurement.
The sensor does not have this information for the other two parameters: salinity and atmospheric pressure.
They must therefore be provided by the S200 Open device.
The BASIC ADJUSTMENT submenu, from the main menu, provides access to the oxygen digital sensor
configuration.
The first line MEASURE. VALUE on this screen lets you select units for the dissolved oxygen parameter
by choosing the unit: %saturation, mg/L or ppm
The operator may activate/deactivate the oxygen measurement compensation parameters on the lower
levels of the same screen.
The choices are therefore repeated:
• EXT.TEMP.COMPENS.: definite temperature value to apply an external temperature
compensation; 25.0 °C by default,
• AIR PRESS. COMPENS.: helps adjust the external compensation value for atmospheric pressure
( hPa)
• SALINITY COMP.: known salinity value for the solution studied in g/kg
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