Miniature Zirconia Oxygen Sensor

Long-Life, Non-Depleting Oxygen Measurement

Key features

  • Industrial grade oxygen sensor
  • 0.1…100% O2 (2mbar to 3bar ppO2) measurement range (with electronics interface)
  • Linear across its range
  • No reference gas requirement
  • 12mm diameter
  • Operating temperature range -100…+250°C (-148°F .. +482°F)
  • Response time: <15 secs standard , <4 secs fast response
  • Stainless steel construction
  • Oxygen pressure range 2mbar…3bar ppO2
  • Accuracy ±5mbar max
  • Vibration resistance 5G repetitive, 30G incidental

  • Electronic Board sold separately


The Miniature Zirconia Oxygen Sensors can be PCB mounted and are used when measuring ambient gas with the complete sensor immersed in the atmosphere.

PST’s range of Miniature Zirconia Oxygen Sensors use a unique closed-loop measurement system. While the sensor continuously measures the oxygen level, a heartbeat signal is also generated providing immediate status of the sensor.

Their long operating life is due to the non-depleting sensor cell technology. No reference gas is required and easy single point calibration can be performed in any known gas including fresh air.

The Miniature oxygen sensor is just 12mm in diameter making it suitable for applications where space is limited. The sensor offers an option of two response times and a temperature range of -100 to 250⁰C. The oxygen sensor offers a linear output signal, a lifetime of up to 10 years (depending on the application), and covers an oxygen range from 0.1 to 100% O₂.


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