Super Systems PGA3500 User Manual
Page 4
SSi Manual 4559
Page 4 of 26
3-Gas Analyzer PGA3500
Revision Level - D
T
T
y
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p
p
i
i
c
c
a
a
l
l
D
D
i
i
a
a
g
g
n
n
o
o
s
s
t
t
i
i
c
c
U
U
s
s
e
e
s
s
o
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f
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h
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A
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3
3
5
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0
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0
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The PGA3500 Analyzer measures CO, CO
2
, and CH
4
. Carbon potential can be calculated using
furnace temperature and the relationship of these 3-gases. Oxygen probe real-time
measurement of the furnace atmosphere can be verified by 3-Gas analysis. In addition to
being an excellent diagnostic device, the PGA3500 will provide the necessary data to fine-
tune your atmosphere control.
Endothermic Generator Diagnostics
The effectiveness of the catalyst is measured by the CH
4
content. Less than 0.5% is an
indication of properly functioning catalyst. Higher concentrations indicate the necessity for
either conditioning or replacement.
Measuring the level of CO in the carrier gas allows correction of the % carbon reading at the
furnace.
Heat Treat Furnaces – Conventional Endo Gas
Furnace atmosphere carbon potential (% C) can be verified with the PGA3500.
Measuring carbon monoxide (CO) and carbon dioxide (CO
2
) can show possible problems (i.e.
water leaks, air leaks, and radiant tube leaks).
The PGA3500 measures the free methane (CH
4
) in the furnace atmosphere.
Heat Treat Furnaces – Nitrogen/Methanol Endo Gas
The carbon monoxide (CO) level in the furnace atmosphere indicates the effectiveness of the
cracking of the methanol. Equilibrium of the methanol cracking reaction (CH
3
OH Æ CO + 2H
2
)
is temperature dependent.
Heat Treat – Oxygen Sensor Control
Periodic verification of the performance of oxygen probes.
COF and PFC adjustments can be made (based on the calculations of the 3 gases) to provide
more precise control of the carbon in the furnace atmosphere.
Combustion – Burner Balancing
Measures excess O
2
in the flue gas to allow burner adjustments.