Commonly used methods for measuring trace moisture in plastic particles include differential pressure method, electrolytic method, Karl Fischer method, etc. Among them, the differential pressure method for moisture determination has been widely used in intermediate processes in the chemical fiber and plastic industries due to its fast, accurate, convenient operation, and low cost of use (close to zero, and methods such as Karl Fischer and other reagents are expensive). In the process. The pressure difference method moisture measuring device is suitable for measuring extremely small amounts of moisture. The boiling point of water under low pressure is very low. Therefore, under pressure close to vacuum, water will always exist in gaseous form, and as the pressure increases, it will condense into water again.
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