Screwfit 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
  • Process connection M18x1.5 or 3/4”NPT options
  • Operating temperature range -100…+250°C (-148°F…+482°F)
  • Response time: <4 secs
  • Stainless steel construction
  • Oxygen pressure range 2mbar…3bar ppO2
  • Accuracy ±5mbar max
  • Vibration resistance 5g repetitive, 30g incidental

  • Electronic Board sold separately


PST manufacture the Screwfit zirconia oxygen sensors, which is ideal for applications in the combustion industry.

The Screwfit zirconia oxygen sensors have a threaded probe design making it easy to install. Suitable for combustion control within industrial coal/oil/gas/biomass boilers, continuous emission monitoring systems and controlled atmosphere monitoring.

PST’s range of Screwfit 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 an immediate warning of any failures.

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 oxygen sensor can cope with extreme temperature levels from -100°C up to 250°C and has a rapid response time of less than four seconds. In addition to this, the 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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