Impedance humidity sensors based on a blend of sodium sulphonated polystyrene and a cellulose-based polymer electrolyte, have been improved by carefully refining the construction details. Enhanced performances have been attained with a close investigation on the electrical characteristics of the device as a function of humidity. The best results have been achieved by choosing both exciting frequency and the distance between the electrodes so that electrode redox processes are avoided.
Polymer electrolytes as humidity sensors: progress in improving an impedance device
N Camaioni;A Martelli;
2002
Abstract
Impedance humidity sensors based on a blend of sodium sulphonated polystyrene and a cellulose-based polymer electrolyte, have been improved by carefully refining the construction details. Enhanced performances have been attained with a close investigation on the electrical characteristics of the device as a function of humidity. The best results have been achieved by choosing both exciting frequency and the distance between the electrodes so that electrode redox processes are avoided.File in questo prodotto:
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