PORTABLE TRACE MOISTURE GENERATOR FOR CALIBRATION OF MOISTURE ANALYZERS

摘要

An improved calibrator for moisture analyzers is provided. A flow of clean dry carrier gas into two streams, one of which passes through an improved saturator bomb, wherein it is completely saturated with water, and then this saturated stream is mixed with the other dry stream to provide a controlled wet stream for calibration. A capillary restrictor is used to control one of the streams. The invention utilizes a simple mathematical relationship for water concentration, means to vary each of the parameters in the relationship independently of the others, and means to simply determine values for the parameters, whichever are varied during a calibration.