What is Zirconia Oxygen Analyzer? Working Principle of Zirconia Type Oxygen Analyzer When heated, zirconia lets oxygen ions move from the reference side (air: ~20.9% O₂) to the sample gas side.This creates a Nernst voltage that is directly related to the difference in partial pressure of oxygen.More difference means a higher voltage output. Why Calibration … Continue reading 9 Step Zirconia Oxygen Analyzer Calibration Procedure