How does SST’s LuminOx Optical Oxygen Sensor operate?

Welcome back to week number 4 of our NEW weekly #SensorFAQs series which you can join in and follow on our twitter page.

We’ll be sharing Frequently Asked Questions we receive from our customers to help provide expert insights into our product range, the sensor industry and more.

This week we answer ‘How does SST’s LuminOx Optical Oxygen Sensor operate?’

Details for next weeks #SensorFAQs:

Date & Time: Tuesday, 4th June 2019, 1.00pm GMT
Channel: #SensorFAQs

#SensorFAQs – Q4 | How does SST’s LuminOx Optical Oxygen Sensor operate? pic.twitter.com/LDvuMceBp8

— SST Sensing Ltd (@SSTSensingLtd) May 28, 2019

Answers

#SensorFAQs – Q4 1/7 | The LuminOx family (LOX) is a range of factory calibrated oxygen sensors which measure ambient oxygen partial pressure (ppO₂) levels using the principle of luminescence quenching by oxygen.

LuminOx is the main competitor to electrochemical sensors. https://t.co/QJdMphiJCO

— SST Sensing Ltd (@SSTSensingLtd) May 28, 2019

#SensorFAQs – Q4 2/7 | They employ the properties of a specific dye which changes its luminescence behaviour depending upon the amount of oxygen around it.

A built in LED excites this dye, causing it to produce light and the O₂ in the environment “quenches” this excitation. https://t.co/QJdMphiJCO

— SST Sensing Ltd (@SSTSensingLtd) May 28, 2019

#SensorFAQs – Q4 3/7 | The rate of decay of luminescence, which is inversely proportional to the oxygen level, is interpreted and linearised by the sensor’s firmware and so allows the ppO₂ to be calculated. https://t.co/QJdMphiJCO

— SST Sensing Ltd (@SSTSensingLtd) May 28, 2019

#SensorFAQs – Q4 4/7 | The LuminOx sensor has built in temperature and barometric pressure compensation. A barometric pressure sensor measurement along with the ppO₂ measurement allows an oxygen concentration (O₂%) value to be calculated. https://t.co/QJdMphiJCO

— SST Sensing Ltd (@SSTSensingLtd) May 28, 2019

#SensorFAQs – Q4 5/7 | LuminOx is a digital sensor with a USART output, meaning there is no need for signal conditioning circuitry. The sensor can serially communicate the values of O₂%, ppO₂, barometric pressure, internal temperature and sensor status. https://t.co/QJdMphiJCO

— SST Sensing Ltd (@SSTSensingLtd) May 28, 2019

#SensorFAQs – Q4 6/7 | LuminOx measures ppO₂ (mbar) and temperature (°C). An optional pressure sensor enables LuminOx to also measure barometric pressure (mbar) and to convert the ppO₂ reading to an oxygen concentration (O₂%). https://t.co/QJdMphiJCO

— SST Sensing Ltd (@SSTSensingLtd) May 28, 2019

#SensorFAQs – Q4 7/7 If you require any more information regarding SST’s LuminOx range of factory calibrated optical oxygen sensors.

Click the link below ⬇️https://t.co/FO6CHpCsgr https://t.co/QJdMphiJCO

— SST Sensing Ltd (@SSTSensingLtd) May 28, 2019

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