OXYGEN CONCENTRATION MEASUREMENT DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an oxygen concentration measurement device capable of being easily attached and removed while maintaining airtightness between a sensor part and a data processing part.SOLUTION: An oxygen concentration measurement device according to the present invention has a zirconia element connected to an external electrode on a side in contact with a measurement gas to be measured and an internal electrode on a side in contact with a reference gas, the zirconia element generating an electromotive force in accordance with a difference between the oxygen concentration of the measurement gas and the oxygen concentration of the reference gas, and measures an oxygen concentration in accordance with the magnitude of the generated electromotive force. The oxygen concentration measurement device is provided with a seal part for securing airtightness with respect to the measurement gas at least at a position where a first platinum electrode connected to the internal electrode is led out and a position where a second platinum electrode connected to the external electrode is led out.