Teledyne 465L, Operation Manual, Page: 27 / 89

Teledyne API Model 465L O3 Monitor Instruction Manual
25 Teledyne API Model 465L O
3
Monitor Manual 05509G DCN6806
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 465L specifications:
The Response Time of an 465L 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 465L is equipped with
this option, the unit has been calibrated at the factory to compensate for any ozone
loss in the permeation dryer.