Panametrics MG101 Moisture Generator

Description

MG101 Panametrics Hygrometer Calibration System
The MG101 hygrometer calibration system is used
to generate precise, repeatable levels of water
vapor in a carrier gas stream. This primary dew/
frost point generation system achieves an accuracy
of ±1.8°F (±1°C) within a continuously adjustable
range.
The MG101 employs the elementary principle of gas
dilution. Dry gas is piped into the system, where it is
divided into two streams. One stream is saturated
with water vapor at a known temperature, while
the other stream remains dry (see flow schematic
on next page). The two streams are then mixed. The
saturated stream is diluted with varying amounts of
the dry gas to produce the desired gas/water vapor
mixture.
The MG101 employs either single stage or two
stage dilution to generate gas with a dew/frost
point range of -103°F (–75°C) to 18°F (10°C) at 20°C
ambient temperature. The MG101 may be used to
verify a wide variety of instruments, including GE
Sensing aluminum oxide moisture probes. When
used with a chilled mirror reference, the system
provides an economical calibration system.