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Calibrate a Wireless Oxygen Gas Sensor

Calibrate the Concentration reading of the Wireless Oxygen Gas Sensor (PS-3217).

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 (SE-6938) 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 Capstone, then click Calibration from the Tools palette.
  4. Select Concentration from the list, then click Next.

  5. Ensure that One Standard (1 point slope) is selected from the list of calibration options, then click Next.

    Calibration Settings

  6. The sample should contain a known concentration of 20.9% oxygen. Enter 20.9 into the Standard Value box, then click Calibrate second point.

    Calibrating Concentration

  7. Review your new calibration, then click Finish.