Emerson Process Management 760004-A THC, THC, THC, Sample, WARNING, Dewpoint, Fuel Gas, Flow rate, Flow rate, Flow rate, Flow rate, Purge Air:, Flow rate:, Temperature, Particulates

Model NGA 2000 HFID

Instruction Manual

760004-A February 2002

c. Gas Requirements
Sample ..........................................	Non-flammable, below 100% of LEL
Flow rate ................................	1.0 to 2.5 L/min.
Supply pressure.....................	345 to 620 hPa-gauge (5 to 9 psig)
Temperature ..........................	110oC to 230oC (230oF to 446oF), <20oC variance/24 hours, <10oC
		variance/hr.
Particulates............................	filtered to <2 microns
Dewpoint................................	<15oC below the setpoint
Regulated Air.................................	Instrument air or nitrogen
Flow rate ................................	2 to 4 L/min.
THC .......................................	≤2 ppm, CH4
Supply pressure.....................	689 to 1723 hPa-gauge (10 to 25 psig)
Particulates............................	filtered to <2 microns
Purge Air:.......................................	Instrument air, nitrogen or other nonflammable gas (refer to
	ANSI/NFPA 496 for the requirements for the Protective Gas Sys-
	tem)
Flow rate: ..............................	16 to 18 L/min.
Supply pressure:....................	689 to 1378 hPa-gauge (10 to 20 psig)
Fuel Gas ........................................	Premixed 40% hydrogen and 60% helium
Flow rate ................................	80 to 100 ml/min
THC .......................................	≤0.5 ppm, CH4
Supply pressure.....................	3101 to 3446 hPa-gauge (45 to 50 psig)
		WARNING
	EXPLOSION HAZARD

Do not use pure hydrogen fuel. An explosion resulting in severe personal injury or death could oc- cur.

Burner Air ......................................	Zero-grade air
Flow rate ................................	350 to 400 mL/min.
THC .......................................	≤1 ppm, CH4
Supply pressure.....................	1723 to 3446 hPa-gauge (25 to 50 psig)

Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-5