In-Situ Communication Device Kit for the Aqua TROLL 400 and RDO PRO Probe - Manual (Page 8)

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Screen Element Purpose
Sentinel value
(text field)
Displays the current sentinel value. The sentinel value
is the number that will display when there is a
communication problem with the sensor. It is important
to set the sentinel value to a number that would be an
unlikely reading for the sensor under regular operating
conditions.
Edit
(button) Allows you to edit the sentinel value for the selected
parameter.
Units
(list) Allows you to assign the unit for the selected
parameter.
Calibrate
(button)
Starts the Calibration Wizard.
Cal Coefficients (button)
Allows you to view the most recent calibration
coefficients stored on the instrument.
RDO Sensor Calibration
Calibrate 100% Oxygen Saturation
1. Place the calibration cap, with the vent hole, on the top of the calibration chamber.
2. Place the sponge wafer in the bottom of the calibration cup and saturate the sponge
wafer with approximately 10 mL clean water.
3. Gently dry the probe and sensing material with a paper towel. Ensure that the probe
and the sensing surface are free of water and fouling.
4. Place the instrument into the calibration chamber.