Title :
An automated precision gas sensor characterization system
Author :
Tang, Zhenan ; Wong, Darwin T W ; Chan, Philip C.H. ; Sin, Johnny K O ; Fung, Samuel K H ; Cheung, Peter W.
Author_Institution :
Dept. of Electron. Eng., Dalian Univ. of Technol., China
Abstract :
The automated gas sensor characterization system is designed for precision characterization of integrated or discrete gas sensors. Gas metering and data acquisition are computer controlled. Calibration of the gas concentration is carried out through the use of a gas analyzer or gas chromatography (GC). The system has been used to characterize two types of commercial gas sensors. The transient response of the gas sensors is therefore measured when the system first reaches equilibrium and then heating current is applied to heat up the sensor from the chamber ambient temperature to the sensor operating temperature. Details of experimental results for static and dynamic characterization of various commercial gas sensors are presented
Keywords :
calibration; chromatography; computerised instrumentation; data acquisition; gas sensors; microcomputer applications; semiconductor materials; tin compounds; transient response; SnO2; SnO2 Taguchi gas sensor; automated precision gas sensor characterization system; chamber ambient temperature; commercial gas sensors; computer control; data acquisition; discrete gas sensors; dynamic characterization; gas analyzer; gas chromatography; gas concentration calibration; gas metering; heating current; integrated gas sensors; sensor operating temperature; static characterization; transient response; Automatic control; Calibration; Data acquisition; Gas chromatography; Gas detectors; Sensor phenomena and characterization; Sensor systems; Temperature sensors; Thermal sensors; Transient response;
Conference_Titel :
Microelectronics and VLSI, 1995. TENCON '95., IEEE Region 10 International Conference on
Print_ISBN :
0-7803-2624-5
DOI :
10.1109/TENCON.1995.496369
