The O 3 Generator; Ozone Generator Dry Air Supply; Figure 6-8. Ozone Generator Principle - Teledyne T200 User Manual

THE O
The analyzer uses a dual-dielectric, Corona Discharge (CD) tube for creating its O
is capable of producing high concentrations of ozone efficiently and with low excess heat
(see Figure 6-8). The primary component of the generator is a glass tube with hollow walls
of which the outermost and innermost surfaces are coated with electrically conductive
material.
Air flows through the glass tube, between the two conductive coatings, in effect creating a
capacitor with the air and glass acting as the dielectric. The layers of glass also separate
the conductive surfaces from the air stream to prevent reaction with the O
charges and discharges, electrons are created and accelerated across the air gap and collide
with the O
Some of these oxygen atoms recombine with O
dependent on factors such as the voltage and frequency of the alternating current applied
to the CD cells. When enough high-energy electrons are produced to ionize the O
molecules, a light emitting, gaseous plasma is formed, which is commonly referred to as a
corona, hence the name corona discharge generator.

OZONE GENERATOR DRY AIR SUPPLY

Ambient air usually contains enough water vapor to greatly diminish the yield of ozone
produced by the ozone generator. Water also reacts with chemicals inside the O
to produce caustic substances such as ammonium sulfate or highly corrosive nitric acid that
will damage the optical filter located between the reaction cell and the PMT.
To prevent this, the air supply for the O
permeation dryer. The dryer consists of a single tube of Nafion
outer, flexible plastic tube. Nafion
most other chemicals. As gas flows through the inner Nafion
into the membrane walls. The absorbed water is transported through the membrane wall
and evaporated into the dry purge gas flowing through the outer tube, countercurrent to the
gas in the inner tube.
190 Teledyne API T200 NO/NO
GENERATOR
3
molecules in the air stream splitting them into elemental oxygen.
2

Figure 6-8. Ozone Generator Principle

®
/NO Analyzer with NumaView™ Software
2 x
to O . The quantity of ozone produced is
2 3
generator is dried using a special single tube
3
®
is a co-polymer that absorbs water very well but not
® tube, water vapor is absorbed
, which
3
. As the capacitor
3
2
Generator
3
that is mounted within an
083730200A DCN7962