FREEZING POINT METER AND FREEZING POINT MEASURING METHOD

摘要

Quickly and also it provides a novel precipitation point measuring method to accurately measure the cloud point.; Irradiated with incident light in the incident angle (θ) satisfying θ θ ₂ to precipitate a total reflection critical angle of the paraffin minutes, such as precipitation in a test solution when by θ _2, when cooling the test solution, a test solution was slowly cooled, such as via and it detects the reflected light from the test solution before each temperature. From a change in reflected light intensity I for temperature change determines the precipitation point of the test liquid. A light intensity distribution detected by the sensor array at each temperature and statistical accurately determine the precipitation point than to. There is an incident and exit to be used for the total reflection type sensor formed in the waveguide structure, and uses a CCD as a detector.