ELECTROCHEMICAL SENSOR SYSTEMS FOR SENSING ANALYTICAL REACTIONS AND BIOLOGICAL OPERATIONS AND METHODS

An electrochemical sensor system for sensing analytical reactions and biological operations is provided. The electrochemical sensor system comprises: an amperometric sensor comprising two electrodes, wherein the electrodes comprise a working electrode and a reference electrode, wherein the amperometric sensor includes no other electrodes and a potentiometric sensor comprising a working electrode and a reference electrode, wherein the potentiometric sensor includes no other electrodes, wherein the reference electrode of the potentiometric sensor is coupled to ground, wherein the working electrode of the amperometric sensor is electrically coupled to the reference electrode of the potentiometric sensor, wherein the amperometric sensor is configured to receive an excitation voltage between the working electrode of the amperometric sensor and the reference electrode of the amperometric sensor such that the received excitation voltage is used as a reference voltage of the potentiometric sensor via the reference electrode of the potentiometric sensor.