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Teledyne API Model 465L O
3
Monitor Instruction Manual
05509F DCN6409 27
Sample Conditioner Option
The Sample Conditioner option is a water drop-out filter and a permeation gas dryer, designed
for high-humidity environments where the sampling gas has been saturated with water vapor and
may contain small amounts of condensed water. This coalescing filter removes not only liquid,
but also particulates with a Teflon filter element. Refer to Section 9.8 for maintenance
procedures.
Due to the additional volume added by the water drop-out filter, there is an exception to the
Response Time in the M465L specifications:
The Response Time of an M465L instrument equipped with the Sample Conditioner option, will
be <60 seconds to 95%.
CAUTION
The Sample Conditioner will NOT protect the unit from damage by
large amounts of liquid, such as that ingested through immersion of
the sample line.
Furthermore, it is important to closely track the amount of water
accumulating in the Water Drop-out Filter after the monitor has been
installed and running: if excessive condensation is occurring in the
sample lines leading to the monitor, then heat-traced lines should
also be used to minimize condensation
The Sample Conditioner option includes a Permeation Gas Dryer, which is available as an
alternate option (described next) if humidity is the only concern and there is no risk of
condensation.
Permeation Gas Dryer Option
The Permeation Gas Dryer serves to remove water vapor from sampling gas in a humid
environment. It is an alternative option when there is no risk of condensation. The permeation
material is a Teflon Type compound and has only a minimal effect on the ozone concentration in
the sample stream. When the M465L is equipped with this option, the unit has been calibrated at
the factory to compensate for any ozone loss in the permeation dryer.