PN 305892901, Rev S
Gas Flow
Sample System
The 3050-RM Moisture Analyzer sample system enables the analyzer to make reli-
able water vapor measurements at concentrations down to 0.1 PPMV. The sample
system serves several purposes:
• It controls the sample conditions at the Sensor assembly (e.g., ow rate,
temperature, pressure). Hence, the QCM-based Sensor is isolated from
variations in the ambient conditions that would otherwise alter the re-
sponse characteristics of the Sensor.
• The sample system is designed to continuously switch the Sensor assem-
bly between the Sample gas and a dry Reference gas. This sample switch-
ing scheme yields both higher sensitivity and reduced drift in the Sensor
readings.
Overview | 1-5
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