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How to Calibrate an Oxygen Probe for Fermentation

Use 1- or 2-year oxygen sensors, or probes, to measure oxygen during the fermentation process. You can use oxygen probes in a wide range of scientific experiments to measure changes in oxygen levels in both air and water. Prior to use in an experiment, you must calibrate the oxygen probe. As the oxygen probe is a self-calibrating system, you can calibrate the probe in a matter of minutes.

Instructions

- 1
  Place the oxygen probe into the area where the experiment will be conducted.
- 2
  Hold down the "Yes" key and the On/Off "Mode" button for 2 seconds. The device will turn on in the diagnostic mode. The message "Diagnostic Mode" will appear on the LCD display screen.
- 3
  Hold down the "Minus" and "Mode" keys simultaneously to enter the programming mode. The LCD message will read "Calibrate Monitor?" Press the "Yes" key.
- 4
  Press the "Yes" key when the LCD display changes to "Fresh Air Calibration?" The instrument will automatically calibrate.
- 5
  Check that the LCD is displaying an oxygen level of 20.9 after calibration.
- 6
  Press and hold down the "Mode" button. The oxygen probe will turn off. Press the "Mode" button again and the probe will turn on. The probe has now been calibrated.

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