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Calibrate a Wireless Oxygen Gas Sensor

Calibrate the Concentration reading of the Wireless Oxygen Gas Sensor.

The Wireless Oxygen Gas Sensor should be calibrated on its first use. The sensor should also be calibrated if, at any point, its reading of the oxygen concentration in an atmospheric sample is more than ±1% away from 20.9%.

Before you start

Calibrating the Wireless Oxygen Gas Sensor requires a 250 mL Sample Bottle or equivalent. This bottle will be used to collect a sample of atmospheric gas, which will provide us with our calibration value. It is recommended that this sample be collected outdoors to ensure the sample contains fresh, uncontaminated air.

Calibration

  1. In an outdoor environment, hold the sample bottle upright and open to the air.
  2. Insert the stopper of the sensor into the bottle to seal the bottle and create an atmospheric sample.
  3. Connect the sensor to SPARKvue.
  4. Select O2 Concentration from the list of available measurements, then select a template to open the Experiment Screen.

  5. From the Live Data Bar in the bottom left corner, select O2 Concentration, then select Calibrate measurement from the list.

    O2 Concentration Live Data Bar

  6. Make sure that the following options are selected, as seen in the image below:

    • Sensor: Wireless Oxygen Gas Sensor
    • Measurement: O2 Concentration (%)
    • Calibration Type: 1 point (Adjust Slope Only)

    Calibration Settings

  7. Click Continue.

  8. The sample should contain a known concentration of 20.9% oxygen. Enter 20.9 into the Standard Value box, then click Set Calibration.

    Calibrating Concentration

  9. Review your new calibration, then click OK.