Direct Digitization of Transducer Outputs Using as thermocouple-to-Frequency Converter. It shows another Temperature-to-Frequency Converter, But this Circuit uses the Popular type-K thermocouple as a Sensor. The design Includes Cold Junction Compensation for thermocouple over a 0 to 60 degree Celsius Range. Accuracy is 1 degree Celsius and Resolution is 0.1 degree Celsius