SST’s range of 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.
The sensing technology and stainless steel construction allow Zirconia Oxygen 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 | 80mm probe 220mm probe 600mm 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 | Nut insertion length: 28mm long 45mm long 55mm 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 Pinned | Flange Mount (Pins) | 0.1 to 25% O₂ 0.1 to 100% O₂ | Extended: -100 to 400⁰C | Fast: < 4s | 4 pin 5 pin |
 Flange Wired | Flange Mount (Wires) | 0.1 to 25% O₂ 0.1 to 100% O₂ | Standard: -100 to 250⁰C | Fast: < 4s | 0.4m with Molex connector |
 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 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 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 |