1-2 | 3050-SLR Moisture Analyzer
sample gas and a dry reference gas. A dry reference gas is produced by passing a portion of
the sample gas through a dryer to remove any moisture present (i.e. - the moisture content
of the dry reference is less than 0.010 ppmv). The difference in the resonant frequency of
the QCM sensor, as measured when exposed to each of the two gas streams, is a function of
the moisture content of the sample gas. Thus, the moisture concentration of the sample gas
is determined from this frequency difference. The calibration data, which relates the mois-
ture concentration of the gas stream to the measured frequency difference, are stored in an
EEPROM within the QCM sensor module.
Controller Communication
Figure 1-2.
3050 Analyzer Flow
Diagram
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