P1.5.2 Combined Amperometric/Field-Effect Sensor for the Detection of Dissolved Hydrogen in Biogas Reactors

C. Huck, A. Poghossian, M. J. Schöning & P. Wagner
A one-chip integrated combined amperometric/field-effect sensor for monitoring the dissolved hydrogen (H2) concentration has been developed for biogas applications. The combination of two different transducer principles might allow a more accurate and reliable measurement of dissolved H2 as an early warning indicator of digester failures. The proposed approach has been demonstrated by simultaneous amperometric/field-effect measurements of dissolved H2 concentration in electrolyte solutions. Both, the amperometric and the field-effect transducer show a linear response in the...