Calibrating a Lambda Module by correcting the Sensor Curve

To represent the individual sensor in the best possible way (e.g. an aged sensor that does not provide precise measurement values any more), you can enter a sensitivity correction to compensate this tampering effect and calibrate the Lambda module with regard to the sensor curve.

Calibrating a Lambda module by correcting the sensor curve is only supported for Lambda devices of the ES63x family.
Calibrating a Lambda module is only possible in advanced device mode.
The Lambda module must be physically connected.

To calibrate a Lambda module:

  1. In the Topology list, select the Lambda device that you would like to calibrate.
  2. Select Calibration (Lean/Rich/Zero current) from the Device menu.
  3. If the selected Lambda device possesses more than one Lambda channel, a dialog opens where you have to select the channel that is to be calibrated. Select the channel and click OK.
  4. The Sensor Calibration Zero Current dialog opens. Here you can enter a reference value for the zero current range (pure Nitrogen). You can either execute an automatic calibration or define a correction value by entering an offset for the IP value at zero current. Click Set Value to make your changes become valid, then click Next.
  5. The Sensor Calibration Lean dialog opens. To calibrate the sensor in the lean range, you can either modify the value for the O2 percentage or enter a linear correction factor. After entering the value for calibration, click Set Value to make your changes become valid, then click Next.
  6. The Sensor Calibration Rich dialog opens. To calibrate the sensor in the rich range, you can either modify the value for the CO and H2 percentages or enter a linear correction factor. After entering the values for calibration, click Set Value to make your changes become valid, then click Exit.

The dialog closes. When you have calibrated the Lambda device by setting values in the Sensor Calibration dialogs, the modifications are displayed on the General Options tab under Sensor Curve Calibration. The modifications are stored permanently and thus still valid after re-powering.

Note

When using a new sensor, you should reset the sensor curve calibration of the Lambda module to its original values by selecting Calibration Reset in the Device menu. The correction factors will then be reset to 1.

See also

Calibrating a Lambda Module with Regard to a Sensor

Resetting a Device to its Factory Default Settings