Title of article :
Detection of NO by pulsed polarization of Pt I YSZ
Author/Authors :
Fischer، نويسنده , , S. and Pohle، نويسنده , , R. and Magori، نويسنده , , E. and Fleischer، نويسنده , , M. and Moos، نويسنده , , R.، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2014
Pages :
4
From page :
288
To page :
291
Abstract :
Pulsed polarization is a measurement technique based on alternating voltage pulses with intermediate pauses for self discharging. The possibility of NO detection by this dynamic measurement technique using conventional lambda sensors is shown in prior investigations. The discharging after polarization depends strongly on NO content in the low ppm range. Due to faster discharging at NO containing atmosphere compared to base gas, the voltage difference between the discharge curves can act as a characteristic value; this voltage change shows a logarithm dependency on NO concentration. The feasibility of NO sensing by use of a planar, more cost-effective sensor (Pt electrodes on yttria stabilized zirconia) is evaluated in detail. The optimum range for NO detection is found at 400 °C by comparing the NO sensitivities at temperatures from 300 °C up to 550 °C.
Keywords :
Pt I YSZ system , Discharging voltage , Pulsed polarization , NO detection
Journal title :
Solid State Ionics
Serial Year :
2014
Journal title :
Solid State Ionics
Record number :
1712785
Link To Document :
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