| 摘要 |
PROBLEM TO BE SOLVED: To provide a galvanic cell type oxygen concentration meter allowing the easy grasp of degradation of a sensor part 1 while easily calibrating output from the sensor part 1. SOLUTION: This galvanic cell type oxygen concentration meter is provided with a galvanic cell type sensor part 1 obtaining oxygen concentration output; an arithmetic part 5 for determining an oxygen concentration; a display part 6 for displaying the oxygen concentration; a mode changeover part 7 for changing over to a calibration mode of detecting and displaying oxygen concentration in clean air, or to a measuring mode of detecting and displaying oxygen concentration in detected object gas; and a changeover control part 9 for successively carrying out a sensor life display stroke of obtaining and displaying measured oxygen concentration information in the calibration mode, and a calibration stroke of obtaining a new calibration constant k for calibrating output before calibration Y so as to correspond to the oxygen concentration in the clean air when the clean air is the detected object gas, and displaying the calibrated output. |
