HMDSO Poisoning of UST1530 MOS Sensor

The dataset was created at the Lab for Measurement Technology (Saarland University). It consists of several characterization measurements of a UST1530 (UST Umweltsensortechnik GmBH) with 2 ppm acetone, 2 ppm carbon monoxide and 2 ppm hydrogen. Between these characterizations the sensor was exposed to 10 ppm of HMDSO (hexamethyldisiloxane) for different times and at different temperatures, which is known to be a sensor poison.

An exact description of the measurement setup and its results can be found in the open access article:

Schultealbert, C., Uzun, I., Baur, T., Sauerwald, T., and Schütze, A.: Siloxane treatment of metal oxide semiconductor gas sensors in temperature-cycled operation – sensitivity and selectivity, J. Sens. Sens. Syst., 9, 283–292, https://doi.org/10.5194/jsss-9-283-2020, 2020.

The h5-file comprises 13 datasets, each containing 48 sensor cycles (ln(G)) with 2500 data points (@ 18 Hz). All measurements were performed consecutively with the same sensor.

Gas profile:

Cycles 16-20: 2 ppm carbon monoxide

Cycles 25-29: 2 ppm acetone

Cycles 34-38: 2 ppm hydrogen

Sensor operation mode:

30 s 450 °C, 120 s 150 °C, 30 s 450 °C, 120 s 200 °C, 30 s 450 °C, 120 s 250 °C, 30 s 450 °C, 120 s 300 °C, 30 s 450 °C, 120 s 350 °C,

Datasets:

x_0h: Characterization before poisoning

x300_3h: Characterization after 3 h at 300 °C at 11 ppm HMDSO

x300_9h: Characterization after additional 6 h at 300 °C at 11 ppm HMDSO

x300_12h: Characterization after additional 3 h at 300 °C at 11 ppm HMDSO

x400_3h: Characterization after additional 3 h at 400 °C at 13 ppm HMDSO

x400_6h: Characterization after additional 3 h at 400 °C at 13 ppm HMDSO

x400_12h: Characterization after additional 6 h at 400 °C at 13 ppm HMDSO

x400_24h: Characterization after additional 12 h at 400 °C at 13 ppm HMDSO

x500_3h: Characterization after additional 3 h at 500 °C at 13 ppm HMDSO

x500_6h: Characterization after additional 3 h at 500 °C at 13 ppm HMDSO

x500_12h: Characterization after additional 6 h at 500 °C at 13 ppm HMDSO

x500_24h: Characterization after additional 12 h at 500 °C at 13 ppm HMDSO

x700: Characterization after additional 12 minutes at 700 °C at 2500 ppm HMDSO