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The MOSS-2 is an ideal sampling tool for use with
one or two OdaLog PPM H2S Gas
Loggers. Designed to facilitate OdaLog data collection in locations
where substantial positive or negative pressures are present, such
as inlet and outlet sampling, and in locations with up to 100% relative
humidity, as these conditions can affect the OdaLog measurements.
For quality data collection where these adverse conditions are present,
it is necessary to present a constant flow rate similar to the calibration
flow rate. The MOSS-2 accomplishes this through the use of a regulated
one-liter pump; two adjustable flow meters housed within a durable
corrosion proof case and external moisture removal traps. The pump
draws the air sample through moisture removal traps prior to introduction
to the flow meters and subsequent delivery to the OdaLogs. The flow
meters are set by the user to 0.40 LPM and deliver a constant gas
sample to the OdaLog H2S Gas
Logger. The traps shield the sensor and flow meters from over-exposure
to condensable moisture. Either one or two PPM OdaLogs may be used
in conjunction with the MOSS-2.
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