amperometric sensors for sensing the concentration of dissolved gasses in fluids; amperometric transmitters for sensing the concentration of dissolved gasses in fluids; potentiometric sensors for sensing pH or oxidation-reduction-potentials; potentiometric transmitters for sensing pH or oxidation-reduction-potentials; digital potentiometric sensors for sensing for sensing pH or oxidation-reduction-potentials and transmitters; digital sensor for sensing parameters of fluids, namely, pH, oxidation reduction potential, carbon dioxide contents total organic contents, turbidity, oxygen content, chlorine content, acetic acid content, nitrate content, conductivity, biological oxygen demand, chemical oxygen demand, temperature, or pressure, comprising a connector plug with inductive coupling for the transmission of measured data, namely, the measured value of the respective sensed parameter, for use in the fields of industrial process automation, water analysis, environmental analysis, waste water treatment, breweries, food processing, chemical processing, pharmaceutical processing, and petrochemical processing, respectively; electronic semiconductor memory module for storing sensor parameters, calibration data, and data of electronic signatures; interconnecting electrical cable; interconnecting electrical cables for providing a galvanically isolated connection between sensors for measuring pH-values and other electrochemical potentials, analyzing devices, namely, measuring transmitters for measuring parameters of fluids, namely, pH, oxidation reduction potential, carbon dioxide contents total organic contents, turbidity, oxygen content, chlorine content, acetic acid content, nitrate content, conductivity, biological oxygen demand, chemical oxygen demand, temperature, or pressure, comprising a connector plug with inductive coupling for the transmission of measured data, namely, the measured value of the respective sensed parameter, for use in the fields of industrial process automation, water analysis, environmental analysis, waste water treatment, breweries, food processing, chemical processing, pharmaceutical processing, and petrochemical processing, respectively, and personal computers; interconnection computer cables for providing connection for digitized analog signals