Facility

Gas sensor test station

Computer-controlled platform for conductometric characterization of thin-film gas sensors.

Gas sensor test station

About the system

The station measures changes in electrical resistance of thin-film sensing materials during exposure to small concentrations of test gases in synthetic air at ambient pressure. Two- and four-point electrical configurations and programmed temperature/gas cycles are supported.

Experimental methods

  • Conductometry: two- or four-point resistance measurements of sensing films during controlled gas exposure

Further equipment & capabilities

  • Mass-flow controllers for accurate synthetic-air/test-gas mixtures
  • PID-controlled sample heating
  • Computer control and automated acquisition

Typical research topics

  • Metal-doped tungsten-oxide sensors
  • Cobalt-oxide sensing layers
  • Composition–structure–response relationships in functional thin films