Zirconia Oxygen Sensors

SST’s range of zirconium dioxide 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.

The sensing technology and stainless steel construction allow these sensors to be used in environments where extreme pressure, temperature and high humidity are present.

SST’s zirconium dioxide oxygen sensors offer a range of housing styles, cabling and electrical connections.

The sensors can be purchased alone or with integrated electronics offering digital or analogue industry standard outputs.  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 sensors can measure over a wide oxygen range (0.1 to 100% O₂).

The reliability of these sensors means that they are used globally in applications ranging from composting to fuel tank inerting in civilian airliners.

Product Housing Type Measurement Range Temperature Range Response Time Termination
Probe Zirconium Dioxide Oxygen Sensors Probe 80mm probe 220mm probe 400mm probe 0.1 to 25% O₂ 0.1 to 100% O₂ Standard: -100 to 250⁰C Extended: -100 to 400⁰C Standard: < 15s Fast: < 4s 0.15m cable 0.3m cable 1.1m cable
Screwfit Zirconium Dioxide Oxygen Sensors Screwfit Nut insertion length: 55mm long 45mm long 28mm long 0.1 to 25% O₂ 0.1 to 100% O₂ Standard: -100 to 250⁰C Fast: < 4s 0.15m cable 0.3m cable 1.1m cable
Flange Mount Zirconium Dioxide Oxygen Sensor Flange Flange Mount (Pins) 0.1 to 25% O₂ 0.1 to 100% O₂ Extended: -100 to 400⁰C Fast: < 4s 4 pin 5 pin
Miniature Oxygen Sensor Miniature Miniature full porous cap Miniature porous lid cap 0.1 to 25% O₂ 0.1 to 100% O₂ Standard: -100 to 250⁰C Standard: < 15s Fast: < 4s 5 pins
Product Sensor Compatibility Output Type Supply Voltage Measurement Range
O2I-FLEX Oxygen Sensor Interface Electronics O2I-Flex PCB All zirconia oxygen sensors RS232 4 to 20mA 0 to 10V 24Vdc 0.1 to 25% O₂ 0.1 to 100% O₂
OXY_LC OXY-LC PCB All zirconia oxygen sensors RS485 (Modbus RTU) PWM 4 to 20mA 0 to 10Vdc 8 to 28Vdc 20 to 28Vdc 0.1 to 25% O₂ 0.1 to 100% O₂

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