THE MEASUREMENT METHOD OF DISTINGUISHING DEW AND FROST POINT USING QUARTZ CRYSTAL MICROBALANCE DEW-POINT SENSOR IN LOW TEMPERATURE

摘要

A method for measuring a dew-point and a frost-point at low temperature using a quartz crystal microbalance dew-point sensor is provided to measure a super-cooled dew-point and the frost-point accurately with one resonance frequency scan without an additional unit. A method for measuring a dew-point and a frost-point at low temperature using a quartz crystal microbalance dew-point sensor comprises the following steps of: measuring resonance oscillation frequency of the quartz crystal microbalance dew-point sensor while dropping temperature gradually; observing impulse wave of the resonance oscillation frequency; and determining the dew-point or the frost-point through observation of the impulse wave and the resonance oscillation frequency.