Thick film resistors made of typical ruthenate pastes on various dielectrics change their properties. The properties of such resistors, fabricated on the TiO2 + glass dielectric, have been evaluated in this paper. The usability of the structures of the type conductor-dielectric-resistor for the construction of temperature sensors has been determined. A practical solution for the temperature sensor, in the form of an RC network with distributed parameters, together with a circuit for the conversion of temperature into frequency has been presented.