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Optical Oxygen Sensor - SST LuminOx Flow-Through

Long-Life, Low Power, Low Maintenance Oxygen Sensing


  • Luminescence-based optical technology, NOT electrochemical
  • Factory calibrated
  • Extended temperature range
  • Maintenance free
  • Battery power usage
  • No need for additional electronics
  • Compact in size

The LuminOx Flow-Through Optical Oxygen Sensor Allows For A Clean Gas Sample Stream Directly Into The Sensor Which Can Be Completely Removed From The Process Environment.

The LuminOx Flow-through Optical Oxygen Sensor is developed and manufactured by SST, it is part of the LuminOx family, which is a range of factory calibrated oxygen sensors which measure ambient oxygen levels using the principle of fluorescence quenching by oxygen, also known as luminescence quenching.

The LuminOx Flow-through Optical Oxygen Sensor (LOX-02-F) is an extension to the standard range of LuminOx oxygen sensors providing a faster response.

The flow-through housing style is sealed on the base which allows for a clean gas sample stream into the sensor which can be completely removed from the process environment. A flow-through housing allows for better sample gas management and options in terms of where the sensor can be situated.

The patented technology allows SST to produce a range of sensors that are based on a non-depleting operating principle. This can contribute to the LuminOx sensors having a comparably longer lifetime that other competitor technologies, such as galvanic sensors, for similar applications.

LuminOx oxygen sensors each have an internal sensor for temperature and barometric pressure compensation, meaning the customer does not need to consider this in their design. It also communicates directly to the customer’s USART so no signal conditioning circuitry is required.

LuminOx is a completely solid state sensor and contains no lead or liquid electrolytes. It is therefore 100% RoHS compliant. It also has virtually no cross sensitivity, allowing it to be used in applications where other technologies are unreliable due to the particular mix of gases present.

The luminescence quenching principle measures the partial pressure of oxygen (ppO2). The internal barometric pressure sensor measurement along with ppO2 measurement allows an oxygen concentration (O2%) value to be calculated. The USART output allows the sensor to communicate the values of O2%, ppO2, barometric pressure, internal temperature and a sensor status.