Ozone Supply Air Filter; Ozone Destruct - Teledyne T200 User Manual

To provide a dry purge gas for the outer side of the Nafion
of the dried air from the inner tube to the outer tube. This means that any time the analyzer
is turned on after having been OFF for 30 minutes or more, the humidity gradient between
the inner and outer tubes is not very large and the dryer's efficiency is low. It takes a certain
amount of time for the humidity gradient to become large enough for the Sample Dryer
operate efficiently, in such cold start cases the O
minutes has passed in order to ensure that it is not operating until its air supply is properly
dry.
Note
The Sample Dryer is capable of adequately drying ambient air to a dewpoint of ≤ -5˚C
(~4000 ppm residual H
≤ -15˚C (~1600 ppm residual H
removing ammonia from the sample gas up to concentrations of approximately 1 ppm.

OZONE SUPPLY AIR FILTER

The analyzer uses ambient air as the supply gas for the O
variety of byproducts. Small amounts of water, ammonia and various sulfur oxides can
combine to create ammonium sulfate, ammonium nitrate, nitric acid and other compounds.
Whereas sulfates and nitrates can create powdery residues inside the reaction cell causing
sensitivity drift, nitric acid is a very aggressive compound, which can deteriorate the
analyzer's components. In order to remove these chemical byproducts from the O
stream, the output of the O
and the reaction cell.
The small amount of NO
in the air) will not affect the analyzer's ability to measure NO
accounted for and removed from the concentration calculations by the analyzer's Auto
Zero feature (see Section 6.1.4).

OZONE DESTRUCT

Even though ozone is unstable and typically reacts to form O
fast enough to ensure that it is completely removed from the exhaust gas stream by the time
the gas exits the analyzer. Due to the high toxicity and reactivity of O
catalytic converter scrubs or converts all of the O
The conversion process is very safe. It only converts ozone to oxygen and does not produce
any toxic or hazardous gases.
The O destruct is located just inside the NO
3
there are no maintenance requirements as would be required for charcoal-based ozone
destructs.
192 Teledyne API T200 NO/NO
When rebooting the instrument within less than 30 minutes of
power-down, the generator is turned on immediately.
O) at a flow rate of 1 standard liter per minute (slpm) or down to
2
O) at 0.5 slpm. The Sample Dryer is also capable of
2
generator flows through a special filter between the generator
3
produced in the generator (from the reaction of O
X
converter. As this is a true catalytic converter,
2
/NO Analyzer with NumaView™ Software
2 x
tube, the analyzer returns some
®
Generator is not turned on until 30
3
generator and may produce a
3
2
, NO and NO
x
, the break-down is not quite
2
, a highly efficient
3
from the gas exiting the reaction cell.
3
083730200A DCN7962
gas
3
or O and N
3 2
as it is
2