Electrochemical sensor for the measurement of gas concentration and procedure for its manufacture (Machine-translation by Google Translate, not legally binding)

• Main Authors: HERRAN PLANCHUELO, JAIME, ROJO ESTEBAN, LANDER, CASTANO CARMONA, ENRIQUE, GARCIA MANDAYO, GEMMA
• Format: Patent
• Language: English; Spanish
• Published: 26.12.2012
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

Electrochemical sensor for the measurement of gas concentration and process for its manufacture, wherein the electrochemical sensor has a solid electrolyte (3) of stabilized zirconia that is deposited in the form of a thin film on a ceramic substrate (1), and on the same horizontal plane defining the surface of the solid electrolyte (3) are deposited two electrodes in the form of a thin film, a first electrode (4) sensitive to the gas to be measured and a second platinum reference electrode (5), both electrodes (4) and 5) an identical response to variations of oxygen, so that an electromotive force is induced between the two electrodes (4 and 5) through the solid electrolyte (3), which is directly proportional to the gas concentration to be measured. (Machine-translation by Google Translate, not legally binding) Sensor electroquímico para la medición de concentración de gases y procedimiento para su fabricación, en donde el sensor electroquímico presenta un electrolito sólido (3) de zirconia estabilizada que está depositado en forma de película delgada sobre un sustrato (1) cerámico, y sobre el mismo plano horizontal que define la superficie del electrolito sólido (3) están depositados dos electrodos en forma de película delgada, un primer electrodo (4) sensible al gas a medir y un segundo electrodo (5) de referencia de platino, presentando ambos electrodos (4 y 5) una respuesta idéntica ante variaciones de oxígeno, de manera que se induce una fuerza electromotriz entre los dos electrodos (4 y 5) a través del electrolito sólido (3), la cual es directamente proporcional a la concentración de gas a medir.