Instruction manual
Table Of Contents
- INSTRUCTION MANUAL HFID
- ESSENTIAL INSTRUCTIONS
- TABLE OF CONTENTS
- PREFACE
- DEFINITIONS
- SAFETY INSTRUCTIONS WIRING AND INSTALLATION OF THIS APPARATUS
- OPERATING AND MAINTAINING THIS APPARATUS
- GENERAL SAFETY NOTICE / RESIDUAL RISK
- AUTHORIZED PERSONNEL
- GASES AND GAS CONDITIONING (SAMPLE HANDLING)
- POWER SUPPLY
- ELECTROSTATIC DISCHARGE
- GENERAL PRECAUTIONS FOR HANDLING AND STORINGHIGH PRESSURE GAS CYLINDERS
- DOCUMENTATION
- COMPLIANCES
- GLOSSARY OF TERMS
- ANALYZER SYSTEM ARCHITECTURE
- SECTION 1: DESCRIPTION AND SPECIFICATIONS
- SECTION 2: INSTALLATION
- SECTION 3: OPERATION
- SECTION 4: MAINTENANCE AND SERVICE
- SECTION 5: TROUBLESHOOTING
- SECTION 6: REPLACEMENT PARTS
- RETURN OF MATERIAL
- LIST OF FIGURES AND TABLES
- SUPPLEMENT
NGA 2000 HFID
Instruction Manual
HAS64E-IM-HW
September 2008
1 - 2 Description and Specifications Emerson Process Management GmbH & Co.OHG
1-4 THEORY OF TECHNOLOGY
This Analyzer Module uses the flame ionization method
of detection. The sensor is a burner in which a regulated
flow of sample gas passes through a flame sustained by
regulated flows of a fuel gas (hydrogen or a hydrogen/
diluent mixture) and air.
With a flame, the hydrocarbon components of the sample
stream undergo a complex ionization that produces elec-
trons and positive ions. Polarized electrodes collect these
ions, causing current to flow through an electronic mea-
suring circuit.
Figure 1-1: Function Principle of FID Measurement
The ionization current is proportional to the rate at which
carbon atoms enter the burner, and is therefore a mea-
sure of the concentration of hydrocarbons in the sample.
This measure of concentration is placed on the network,
where it is can be shown on the Platform Display or on
other data aquisition devices.
Signal Conditioning
Positive Carbon Ions
Air
Fuel
Sample
+ 90 V
Negative Ion Collection Ring