Metal Oxide Gas Sensors

Our metal oxide sensors use technologies that best suit the individual application.

While electrochemical amperometric sensors are popular because of their low power and selectivity, some applications operate in environments that extend beyond their capability. To meet those demands, Alphasense has introduced a new class of metal oxide gas sensor.

Traditional n-type metal oxides suffer from baseline drift and humidity sensitivity however Alphasense p-type metal oxide gas sensors have more stable baselines and very low humidity sensitivity.

Three variants have been designed for specific markets:

  • H2S detection at high temperatures (up to 120oC) for oil and gas applications
  • Volatile Organic Compounds (VOCs) for low cost IAQ applications
  • CO detection for environments at extreme temperatures and/ or humidities

Application notes

Download Metal Oxide Application Notes – see application notes for full details.

Data Sheets
File Description Type
Volatile Organic Compound Sensor p-type Metal Oxide VOC Sensor Data Sheet Download
Hydrogen Sulfide Sensor p-type Metal Oxide Hydrogen Sulfide Sensor Data Sheet Download
Carbon Monoxide Sensor p-type Metal Oxide Carbon Monoxide Sensor Data Sheet Download
An Introduction to p-Type Metal Oxide Sensors p-Type Metal Oxide Sensor Overview Data Sheet Download