OXYGEN DETECTOR AND MEASURING APPARATUS OF OXYGEN CONCENTRATION

摘要

PURPOSE:To offer the oxygen concentration measuring apparatus, by correcting an output from an oxygen detector using no temperature compensation element by an electric signal given from a temperature measuring element and outputting the oxygen concentration calibrated by the temperature of the object to be measured. CONSTITUTION:A notch is made on a side edge of an electrode supporting body 3 of an oxygen detector having an oxygen permeable diaphragm 4 and the tip end of a temperature measuring element B penetrating the body 3 is exposed to the notch. Each amplifier 13 and 14 is connected to an oxygen electrode A and the element B and is switched to either side by a switching circuit 15. A sample holding circuit 16 an A/D converter 17 and a microprocessor 18 are connected next to the circuit 15 and the output of the electrode A of the output from the element B at each temperature is taken in the microprocessor 18 and saturated quantity of dissolved oxygen in a sample is operated and is outputted.