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Instruction Manual
748297-E
June 2003
Rosemount Analytical Inc. A Division of Emerson Process Management Installation
2-9
Model NGA2000 HFID
2-6 INSTALLATION CONSIDERATIONS
CHECKLIST
Verify the following:
• The Analyzer’s location should be:
Clean
A well ventilated area
weatherproofed
Non-hazardous
Vibration-free
Have stable ambient temperature
• The gas cylinders should be equipped
with a clean, hydrocarbon free two stage
regulator and shut off valve.
• All external tubing, regulators, valves,
pumps, fittings, etc. are clean.
• The correct fuel type is being used.
• The THC content of the supply gases
are compatible with the analysis range.
• The calibration background gases are
similar to the sample.
• The purge air out, burner exhaust, and
bypass are vented to atmospheric pres-
sure. The pressure should be constant.
• The burner exhaust tube must be
slanted down a minimum of 6 degrees
from horizontal.
• The bypass line connection must be
slanted down a minimum of 6 degrees
from horizontal for drainage of water
condensation.
• If required, thermal insulation around the
bypass fitting to prevent condensation in
the bypass restrictor.
• If required, thermal insulation for the
sample inlet connection to minimize the
cold spot.
• The heated line is at the correct tem-
perature.
• The sample, zero, and span gases are
at the correct temperature.
• The heated line to have over tempera-
ture protection.
• The sample, bypass, and burner ex-
haust tubing material must handle high
temperature and have thermal insulation
to protect from burns.
• The purge air out tubing to be 3/8 inch
and less than 4 feet in length.
• All external gas connections have been
leak checked.
• The dead volume for external sample
and fuel lines have been minimized.
• The stainless steel tubing used for the
fuel and sample lines is clean.