Model NGA2000 HFID

Instruction Manual

748297-E June 2003

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 ........................

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)

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. A Division of Emerson Process Management

Description and Specifications

1-5