Universal Analyzers 500 series, Руководство пользователя

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MAN.500.REVD.06302015
Description and Principle of Operation
APPLICATION
In order to accurately analyze combustion gases, moisture must be removed from the sample without removing gas
components of interest. The Universal Analyzers Thermoelectric Gas Cooler provides an ideal repeatable, and stable way
to decrease the dew point of combustion gasses. This prevents water condensation in sample prefilters, sample pumps,
and gas analyzers. Where water vapor is an interferrent, a stable and repeatable dew point becomes a part of the gas
analyzer’s performance specification. The 500 Series Cooler provides this constant, resulting in an accurate analysis of
the gas components of interest.
The gas sample is first pulled through a sample probe, which usually contains a heated filter, and then through a heated
sample line, which keeps the sample above its dew point. The 500 Series Cooler then condenses water out of the sample,
which lowers the dew point to 5°C (41°F).
The 500 Series Thermoelectric Gas Coolers are for general purpose, light duty applications. Several models are available
to meet various application conditions. Use the cooler selection chart below to best fit a model to the expected flow rates,
water vapor concentrations, and ambient temperature conditions. If none of the models listed meet the needs of the
application, contact your Universal Analyzers local sales representative for more options.
GAS COOLER SELECTION CHART
Conditions Model
Ambient Water 520 530 540* 560 570 574* 574*
77°F
(25°C)
12% 2.5 l/m 4.0 l/m 2.5 l/m 5.0 l/m 4.0 l/m 5.0 l/m 2.5 l/m
15% 2.0 l/m 4.0 l/m 2.0 l/m 4.0 l/m 4.0 l/m 4.0 l/m 2.0 l/m
30% 1.0 l/m 4.0 l/m 1.0 l/m 2.0 l/m 4.0 l/m 2.0 l/m 1.0 l/m
50% 0.6 l/m 4.0 l/m 0.6 l/m 1.0 l/m 4.0 l/m 1.0 l/m 0.6 l/m
90°F
(32°C)
12% 2.0 l/m 3.0 l/m 2.0 l/m 4.0 l/m 3.0 l/m 4.0 l/m 2.0 l/m
15% 1.8 l/m 3.0 l/m 1.8 l/m 3.5 l/m 3.0 l/m 3.5 l/m 1.8 l/m
30% 0.9 l/m 3.0 l/m 0.9 l/m 1.8 l/m 3.0 l/m 1.8 l/m 0.9 l/m
50% 0.5 l/m 3.0 l/m 0.5 l/m 0.9 l/m 3.0 l/m 0.9 l/m 0.5 l/m
105°F
(41°C)
12% 1.5 l/m 2.0 l/m 1.5 l/m 3.0 l/m 2.0 l/m 3.0 l/m 1.5 l/m
15% 1.2 l/m 2.0 l/m 1.2 l/m 2.5 l/m 2.0 l/m 2.5 l/m 1.2 l/m
30% 0.6 l/m 2.0 l/m 0.6 l/m 1.3 l/m 2.0 l/m 1.3 l/m 0.6 l/m
50% 0.3 l/m 2.0 l/m 0.3 l/m 0.7 l/m 2.0 l/m 0.7 l/m 0.3 l/m
# of Gas Streams 1 1 2 1 2 2 4
*THE DATA PROVIDED IS FOR EACH STREAM
Various combustion processes can produce high levels of corrosive elements. An array of materials is available for the
500 Series Coolers, where gases come into contact with heat exchangers. 316SS is the most common option, and meets
the needs of most general purpose applications. Coatings of Silconert
™
2000, or Teflon
®
may be added to the stainless
steel heat exchanger to enhance chemical resistance. Heat exchangers may also be made of other materials for corrosion
resistance, such as Glass/Kynar
®
, Kynar
®
/Kynar
®
, and Hastelloy
®
C276. Contact your local sales representative for
information on which material is best suited for your application.
New Jersey Thermocouple Types K and J are available for external monitoring of heat exchanger temperatures.