Air Saturated Water Calibration; Manual (Winkler) Calibration - Thermo Scientific Orion Versa Star Pro User Manual


Chapter 6 RDO/DO Measurement Module

88 Orion Versa Star Pro Meter User Manual
6. Press the f3 (Cal Done) key to save and end the calibration.
7. The meter will display the calibration summary and export the data to the calibration log.
Press the measure (esc) key to proceed to the measurement mode.

Air Saturated Water Calibration

1. Press the f1 (Cal) key to start the calibration.
a. If more than one channel is displayed in the measurement mode, press the  or 
key to highlight the desired channel and press the f3 (Select) key.
2. Press the  or  key to highlight Air Saturated Water and press the f3 (Select) key.
3. Prepare the DO probe and 100% air-saturated water and allow them to reach equilibrium.
a. Use plastic paraffin film to seal the open area between the DO probe and vessel
containing the 100% air-saturated water.
4. When the DO probe and calibration apparatus are ready, press the f3 (Start) key.
a. If using a stirrer probe, the stirrer probe will start stirring when the f3 (Start) key is
pressed and stop stirring when the reading stabilizes.
5. Wait for the dissolved oxygen value on the meter to stabilize and press the f2 (Accept)
key.
a. 100.0 % will be displayed when the reading stabilizes.
6. Press the f3 (Cal Done) key to save and end the calibration.
7. The meter will display the calibration summary and export the data to the calibration log.
Press the measure (esc) key to proceed to the measurement mode.

Manual (Winkler) Calibration

1. Press the f1 (Cal) key to start the calibration.
a. If more than one channel is displayed in the measurement mode, press the  or 
key to highlight the desired channel and press the f3 (Select) key.
2. Press the ▲ or ▼ key to highlight Manual and press the f3 (Select) key.
3. Prepare the DO probe and calibration solution and allow them to reach equilibrium.
a. Use plastic paraffin film to seal the open area between the DO probe and vessel
containing the calibration solution.
4. When the DO probe and calibration apparatus are ready, press the f3 (Start) key.
a. If using a stirrer probe, the stirrer probe will start stirring when the f3 (Start) key is
pressed and stop stirring when the reading stabilizes.
Thermo Scientific