Instruction Manual

760004-A February 2002

Model NGA 2000 HFID

d. Gas Connections

 

Sample In ......................................

1/4" O.D. tube fitting, stainless steel

Regulated Air In ...............................

1/4" O.D. tube fitting, brass

Burner Air In .....................................

1/4" O.D. tube fitting, brass

Fuel In...............................................

1/4" O.D. tube fitting, stainless steel

Purge Air In ......................................

3/8" O.D. tube fitting, brass

Purge Air Out....................................

3/8" O.D. tube fitting, brass

Bypass Out.......................................

1/4" O.D. tube fitting, stainless steel

Burner Exhaust Out:......................

3/8" O.D. tube connection, stainless steel (must slope downward

 

6o min. from horizontal)

Burner Exhaust, Bypass Out and Purge Air Out to be vented to atmospheric pressure and to non-classified location in accordance with ANSI/NFPA-496 guidelines.

Pressure Relief Valve ......................

See Caution Below

CAUTION

PRESSURE RELIEF VALVE

No connection shall be made to this fitting. If this caution is ignored, damage to the case seals could occur, and the instrument will not operate properly.

WARNING

HIGH TEMPERATURE

The Sample In, Bypass Out, and Burner Exhaust Out connections can reach temperatures of up to 250°C (480°F). Severe burns could result from touching these connections.

See the Preface section of the Platform Components manual for specifications regarding Platform-related components and the Preface of the I/O Module manual for specifications regarding I/O (e.g., relay outputs).

1-6 Description and Specifications

Rosemount Analytical Inc. A Division of Emerson Process Management