AMI Oxytrace QED
Maintenance
A-96.250.531 / 300617 49
6.6. Zero-Verification
Swansensor Oxytrace G for the measurement of low oxygen con-
tent (< 1 ppb).
1 Calibrate the sensor according to chapter Calibration, p. 47.
2 Prepare a 5%-sodium sulfite solution with demineralized water.
3 Put the electrode into the sodium sulfite solution afterwards. As-
sure that there are no air bubbles in front of the sensor.
4 The measured value should now be < 1 ppb.
NOTICE: Depending on the state of the electrode this process
can take several hours. In case of an electrode-refill, this can
take days until the measured value is lower than 1 ppb.
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