Teledyne 200A User Manual download pdf (Page 44)

Teledyne API Model 200A NO

Analyzer Instruction Manual, 02246, Rev. G, DCN 5247

4.2.8 Ozone Generator

Because of the instability of ozone, it is necessary to generate this gas inside the analyzer. The

ozone generation module consists of a high voltage AC supply and silent discharge tube and

permeation type air drier. A complete description of its function and service requirements can be

found in Section 9.3.6.

CAUTION

Lethal voltages present inside ozone generator.

Do not defeat electrical interlock.

The dry air supply for the ozone generator uses a membrane drier to supply air with a dew point

of 0

C or less. The exhaust side of the membrane is connected to the vacuum manifold at the

rear of the instrument.

Normal room air contains enough water vapor to damage the generator and components

downstream. To prevent damage, the generator will be turned ON after 30 min following a cold

start. Otherwise, the starting of the generator will follow the table below:

Table 4-4-4: Ozone Generator Start-up Timing

Ozone Gen State at

Power-On

Instrument Action

ON If instrument has been off for less than 30 min

OFF If instrument has been off for more than 30 min

4.2.9 Molydbenum Converter

The molybdenum converter is a stainless steel cartridge containing molybdenum chips heated to

315 C. The converter's function is to reduce nitrogen dioxide NO

to nitric oxide NO. The

temperature control for this module is done by the computer.

4-9

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Teledyne 200A User Manual Page 44