Model NGA 2000 HFID

Instruction Manual

760004-A February 2002

WARNING.

HIGH TEMPERATURE

This equipment is used in the analysis of sample gases at temperatures of up to 250 C. All components and material in contact with the sample, the oven and the burner can reach this temperature level.

Operate this equipment only when covers are secured. Servicing requires access to "hot" parts which can cause serious injury. Refer servicing to qualified personnel.

NOTE

This Analyzer Module is completely leak-tested at the factory for gas leakage. The user is responsible for testing for leakage at the inlet and outlet fittings on the rear panel (with a test procedure chosen by the user). The user is also responsible for leak-testing periodically and if any internal pneumatic components are adjusted or replaced. See leak test instructions in Section 2-5.

WARNING.

PARTS INTEGRITY

Tampering with or unauthorized substitution of components may adversely affect safety of this product. Use only factory-approved components for repair.

CAUTION.

PURGE AIR REQUIREMENT

This Analyzer Module must be used in conjunction with a device (Control Module or PC Interface) that can actively monitor network variables related to pressure or flow of the continuous dilution purge, or the front panel LEDs of the Analyzer Module, as installed, must be visible. The purpose of this requirement is to maintain adherence to ANSI/NFPA 496 standard which assures the continued viability of the purge system. Under no circumstances should any pressure or flow indicator be connected to the PURGE AIR OUT outlet of the Analyzer Module because this may affect the sealing performance of the module.

CAUTION.

PRESSURIZED GAS

This module requires calibration with a known standard gas. See General Precautions for Handling and Storing High Pressure Gas Cylinders, page P-5.

Rosemount Analytical Inc. A Division of Emerson Process Management

Preface P-3