Gas Requirements; Physical - Emerson ROSEMOUNT NGA2000 HFID Instruction Manual

Model NGA2000 HFID
b.

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 ........................110
Particulates ..........................filtered to <2 microns
Dewpoint..............................<15
Regulated Air................................. Instrument air or nitrogen
Flow rate ..............................2 to 4 L/min.
THC .....................................≤2 ppm, CH
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
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, CH
Supply pressure...................3101 to 3446 hPa-gauge (45 to 50 psig)
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, CH
Supply pressure...................1723 to 3446 hPa-gauge (25 to 50 psig)
c.

Physical

Case Classification........................ General purpose for installation in weather-protected area
Maximum Separation .................... 1600m (1 mile) from Analyzer Module to Platform
Materials in Contact With Sample . Stainless steel and glass-filled teflon
Dimensions.................................... See Outline and Mounting Dimensions, Figure 2-5 on page 2-7
Weight ........................................... 15.9 kg (35 lbs.)
Mounting........................................ Horizontally, custom-installed in a panel
Rosemount Analytical Inc.
o
C to 230
variance/hr.
o
C below the setpoint
ANSI/NFPA 496 for the requirements for the Protective Gas Sys-
tem)
EXPLOSION HAZARD
A Division of Emerson Process Management
o o o
C (230 F to 446 F), <20
4
4
WARNING
4
Instruction Manual
June 2003
o
C variance/24 hours, <10
Description and Specifications
748297-E
o
C
1-5