Methods are described for the design and fabrication of the temperature compensation circuits on the Clark electrodes for measuring the dissolved oxygen(DO) concentration. The discussion includes a method of the sensor interface circuits for the DO se...
Methods are described for the design and fabrication of the temperature compensation circuits on the Clark electrodes for measuring the dissolved oxygen(DO) concentration. The discussion includes a method of the sensor interface circuits for the DO sensor. Typical polarograms for the DO probes under test using this sensor circuits are presented. High accuracy over 99% of the Ⅰ to Ⅴ conversion using the proposed circuit is verified. Temperature dependence for the test DO probe is well compensated automatically in the temperature range of the 0-50℃.