Multi-zone Furnace Multi-gas
Process Analzyer
The Multi-gas Process Analyzer System is designed to monitor the
gas processes  in large
multi-zone furnaces for gas composition with optional temperature
and pressure measurements. The system includes electrically powered
equipment to sample toxic, flammable, possibly explosive gases and
uses high-pressure gas cylinders for calibration.
The system is housed within a NEMA 4 electrical enclosure that is
permanently mounted near the process. The heart of the system is
ARI’s Laser Gas Analyzer (LGA), which is a self-contained gas
sampler/analyzer that uses the principles of Raman spectroscopy to
simultaneously identify and quantify eight (8) gaseous compounds.
The system connects the analyzer to 8 to 16 gas-sampling ports via a
unique valve manifold. Sample scheduling, which is user
configurable, is generally set to continuously cycle through the
ports, one after another. Sample time at each port is typically 10
to 15 seconds.
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Inside a 16-gas LGA with 16 port
sampling system and 16 pressure ports. | The
system includes ARI’s multi-port-purge system that uses an auxiliary
pump to simultaneously pre-purge one or more sample lines while
simultaneously analyzing gas in a specified line. This shortens the
time between port-gas measurements by keeping the sample lines
filled with fresh sample gas. The system also includes ARI’s
nitrogen back flush system. Should any of the sampling lines become
restricted or plugged, pressurized nitrogen can be forced backwards
down the line to clean it.
Application Areas
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