In-Situ Calibration Kit for the optical RDO PRO Probe - Manual (Page 2)

Instruction Sheet
2-Point Calibration
100% and 0% Saturation
1. Set up the calibration procedure as previously
described, and perform a water-saturated air
calibration.
2. Remove the water-saturated sponge from the
calibration chamber and fill the chamber to the fill line
with approximately 60 mL of fresh sodium sulfite
solution.
1 Fill line
2 Temperature sensor
2. Place the instrument into the solution. Leave at least
13 mm (0.5 in.) between the surface of the sensing
material and the bottom of the chamber.
3. Ensure that the temperature sensor is completely
submerged in the solution.
4. Allow at least 5 minutes for the temperature to
stabilize prior to performing the calibration procedure.
5. Once calibration is complete, remove the sensor, and
thoroughly rinse to remove all of the sodium sulfite.
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