Emerson Rosemount Analytical NGA2000 CLD User manual

Instruction Manual
760000-C
November 2002
http://www.processanalytic.com
Model NGA2000 CLD
Chemiluminescence Analyzer Module

Emerson Process Management
Rosemount Analytical Inc.
Process Analytic Division
1201 N. Main St.
Orrville, OH 44667-0901
T [phone]
F [phone]
e-mail: [email protected]
http://www.processanalytic.com
ESSENTIAL INSTRUCTIONS
READ THIS PAGE BEFORE PROCEEDING!
Rosemount Analytical designs, manufactures and tests its products to meet many national and in-
ternational standards. Because these instruments are sophisticated technical products, you
MUST properly install, use, and maintain them to ensure they continue to operate within their
normal specifications. The following instructions MUST be adhered to and integrated into your
safety program when installing, using, and maintaining Rosemount Analytical products. Failure to
follow the proper instructions may cause any one of the following situations to occur: Loss of life;
personal injury; property damage; damage to this instrument; and warranty invalidation.
•Read all instructions prior to installing, operating, and servicing the product.
•If you do not understand any of the instructions, contact your Rosemount Analytical representative
for clarification.
•Follow all warnings, cautions, and instructions marked on and supplied with the product.
•Inform and educate your personnel in the proper installation, operation, and maintenance of
the product.
•Install your equipment as specified in the Installation Instructions of the appropriate Instruc-
tion Manual and per applicable local and national codes. Connect all products to the proper elec-
trical and pressure sources.
•To ensure proper performance, use qualified personnel to install, operate, update, program, and
maintain the product.
•When replacement parts are required, ensure that qualified people use replacement parts specified by
Rosemount. Unauthorized parts and procedures can affect the product’s performance, place the safe
operation of your process at risk, and VOID YOUR WARRANTY. Look-alike substitutions may result
in fire, electrical hazards, or improper operation.
•Ensure that all equipment doors are closed and protective covers are in place, except when
maintenance is being performed by qualified persons, to prevent electrical shock and personal
injury.
The information contained in this document is subject to change without notice.
Teflon is a Registered Trademark of E.I. duPont de Nemours and Co., Inc.
Kynar is a Registered Trademark of Atochem North America, Inc.
SNOOP is a registered trademark of NUPRO Co.

Instruction Manual
760000-C
November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents i
Model NGA2000 CLD
TABLE OF CONTENTS
PREFACE...........................................................................................................................................P-1
Definitions ...........................................................................................................................................P-1
Safety Summary .................................................................................................................................P-2
General Precautions For Handling And Storing High Pressure Gas Cylinders .................................P-6
Documentation....................................................................................................................................P-7
Compliances .......................................................................................................................................P-7
Glossary Of Terms ...........................................................................................................................P-8
1-0 DESCRIPTION AND SPECIFICATIONS..............................................................................1-1
1-1 Overview................................................................................................................................1-1
1-2 Typical Applications...............................................................................................................1-1
1-3 Theory of Technology............................................................................................................1-1
1-4 Features.................................................................................................................................1-1
1-5 Specifications.........................................................................................................................1-4
a. General ...........................................................................................................................1-4
b. Physical...........................................................................................................................1-4
c. Sample ............................................................................................................................1-4
d. Gas Connections.............................................................................................................1-5
2-0 INSTALLATION ....................................................................................................................2-1
2-1 Unpacking..............................................................................................................................2-1
2-2 Assembly ...............................................................................................................................2-1
2-3 Location .................................................................................................................................2-2
2-4 Gases ....................................................................................................................................2-2
a. Overview .........................................................................................................................2-2
b. Connections ....................................................................................................................2-2
c. Specifications ..................................................................................................................2-3
2-5 Electrical Connections ...........................................................................................................2-4
3-0 OPERATION .........................................................................................................................3-1
3-1 Overview................................................................................................................................3-1
3-2 Displays & Operating Keys....................................................................................................3-1
a. Menu Lines & Softkey Functionality................................................................................3-1
b. Common Function Keys..................................................................................................3-2
c. Entering & Changing Variables.......................................................................................3-3
d. Starting a Function..........................................................................................................3-3
e. Measure Mode Display ...................................................................................................3-4
f. Main Menu ......................................................................................................................3-4
3-3 Startup & Initialization............................................................................................................3-7
a. Routine Operation...........................................................................................................3-7
3-4 Basic Controls and Status .....................................................................................................3-8
a. Analyzer Channel Status ................................................................................................3-8
b. Single Component Display..............................................................................................3-8
c. Multi Component Display ................................................................................................3-9
3-5 Basic Controls........................................................................................................................3-10

Instruction Manual
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November 2002
ii Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
3-6 Display Controls ....................................................................................................................3-11
3-7 Analyzer And I/O, Expert Controls And Setup.......................................................................3-12
a. Range Settings................................................................................................................3-12
b. Physical Measurements..................................................................................................3-13
c. Concentration Alarms .....................................................................................................3-13
d. Linearization Parameters ................................................................................................3-14
e. Linearization Functions ...................................................................................................3-15
f. Response Time ...............................................................................................................3-17
g. Automatic Range Change...............................................................................................3-17
h. Display Units ...................................................................................................................3-18
i. Physical Measurements & Pressure Limits ....................................................................3-18
j. Single Component Display Parameters..........................................................................3-19
3-8 Calibration Procedure............................................................................................................3-21
a. Calibration Setup.............................................................................................................3-21
b. Basic Controls Calibration...............................................................................................3-22
c. Expert Controls Calibration .............................................................................................3-23
d. Unable to Calibrate .........................................................................................................3-25
3-9 System & Network I/O Module Controls (Setup) – System SIO...........................................3-26
a. Analog Output Setup.......................................................................................................3-26
b. Serial Interface Setup .....................................................................................................3-29
c. Relay Outputs Setup.......................................................................................................3-29
3-10 System & Network I/O Module Controls (Setup) – System DIO ..........................................3-31
3-11 System Configuration and Diagnostics .................................................................................3-32
a. Diagnostic Menus............................................................................................................3-32
b. Load/Save Module Configuration....................................................................................3-34
c. Date and Time.................................................................................................................3-35
d. Security Codes................................................................................................................3-35
e. System Reset..................................................................................................................3-36
3-12 Converter Temperature Adjustment ......................................................................................3-37
3-13 Measurement of Converter Efficiency ...................................................................................3-38
a. Test Setup for Measurement of Conversion Efficiency...................................................3-38
b. Test Procedure................................................................................................................3-38
c. Subnormal Conversion Efficiency ...................................................................................3-39
d. Replacement of Converter ..............................................................................................3-40
e. Capillaries .......................................................................................................................3-40
f. TEA Scrubber..................................................................................................................3-40
4-0 MAINTENANCE AND SERVICE ..........................................................................................4-1
4-1 Overview................................................................................................................................4-1
4-2 Fuses .....................................................................................................................................4-1
4-3 Fans.......................................................................................................................................4-1
4-4 Converter ...............................................................................................................................4-1
4-5 Ozonator ................................................................................................................................4-1
4-6 Printed Circuit Boards............................................................................................................4-1
4-7 Detector Disassembly............................................................................................................4-3
a. Reaction Chamber Removal...........................................................................................4-3
b. Reaction Chamber Installation........................................................................................4-3
c. Photodiode Removal.......................................................................................................4-4
d. Photodiode Installation....................................................................................................4-4
5-0 TROUBLESHOOTING ..........................................................................................................5-1
5-1 Leaks .....................................................................................................................................5-1

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November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Model NGA2000 CLD
6-0 REPLACEMENT PARTS ......................................................................................................6-1
6-1 Matrix .....................................................................................................................................6-1
6-2 Replacement Parts ................................................................................................................6-1
7-0 RETURN OF MATERIAL ......................................................................................................7-1
7-1 Return Of Material .................................................................................................................7-1
7-2 Customer Service ..................................................................................................................7-1
7-3 Training..................................................................................................................................7-1
8-0 INDEX....................................................................................................................................8-1

Instruction Manual
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November 2002
iv Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
LIST OF ILLUSTRATIONS
Figure 1-1. Flow Diagram - CLD Analyzer Module With Bypass Flow Sensor .................................1-2
Figure 1-2. Flow Diagram - CLD Analyzer Module Without Bypass Flow Sensor ...........................1-2
Figure 1-3. CLD Analyzer Module - Top View..................................................................................1-3
Figure 2-1. Analyzer Module Installation into Instrument Platform....................................................2-1
Figure 2-2. CLD Rear Panel Connections.........................................................................................2-3
Figure 2-3. Front Panel Controls and Electrical Connections ...........................................................2-4
Figure 2-4. CLD Wiring Diagram .......................................................................................................2-5
Figure 2-5. Outline and Mounting Dimensions ..................................................................................2-6
Figure 3-1. Measure Mode Display ...................................................................................................3-1
Figure 3-2. The Display Screen.........................................................................................................3-3
Figure 3-3. Changing Variables.........................................................................................................3-3
Figure 3-4. Function Confirmation Display ........................................................................................3-3
Figure 3-5. Main Menu Display..........................................................................................................3-4
Figure 3-6. Module Manufacturing Data Displays .............................................................................3-5
Figure 3-7. Main Menu Sub Menus ...................................................................................................3-6
Figure 3-8. Startup Display................................................................................................................3-7
Figure 3-9. Basic Controls Menu.......................................................................................................3-10
Figure 3-10. Display Controls Menu ..................................................................................................3-11
Figure 3-11. Analyzer and I/O Expert Controls and Setup Menu......................................................3-12
Figure 3-12. Expert Controls Menu ...................................................................................................3-12
Figure 3-13. Range Settings Menu....................................................................................................3-12
Figure 3-14. Physical Measurements Menu......................................................................................3-13
Figure 3-15. Concentration Alarm Setup Menu.................................................................................3-13
Figure 3-16. Gas Measurement Parameters Menu...........................................................................3-14
Figure 3-17. Linearization Parameters Menu ....................................................................................3-14
Figure 3-18. Linearity Coefficients Menu...........................................................................................3-14
Figure 3-19. Linearization Functions Menu .......................................................................................3-15
Figure 3-20. Polynomial Setup Menu ................................................................................................3-15
Figure 3-21. Gas Concentrations Menu ............................................................................................3-15
Figure 3-22. Midpoint Correction Setup Menu ..................................................................................3-16
Figure 3-23. Response time/delay Parameters................................................................................3-17
Figure 3-24. Automatic Range Control Menu....................................................................................3-17
Figure 3-25. Actual Switch Levels Menu ...........................................................................................3-18
Figure 3-26. Display Units Menu .......................................................................................................3-18
Figure 3-27. Pressure Limits Menu ...................................................................................................3-19
Figure 3-28. Temperature Limits Menu .............................................................................................3-19
Figure 3-29. Physical Measurements – Manufacturer’s settings Display..........................................3-19
Figure 3-30. Displayed Parameters Menu.........................................................................................3-19
Figure 3-31. Calibration Gas List Menu.............................................................................................3-21
Figure 3-32. Calibration Parameters Display ....................................................................................3-22
Figure 3-33. Zero/Span Calibration Menu .........................................................................................3-23
Figure 3-34. Analyzer Zero Display...................................................................................................3-23
Figure 3-35. Zero/Span Diagnostic Data Menu.................................................................................3-24
Figure 3-36. Calibration Factors Menu..............................................................................................3-24
Figure 3-37. Range Factors Menu.....................................................................................................3-24
Figure 3-38. Range Factors -Manufacturer’s/Stored Settings Display..............................................3-25
Figure 3-39. System & Network I/O Module Controls Menu .............................................................3-26
Figure 3-40. System SIO Module Menu ............................................................................................3-26
Figure 3-41. Analyzer Modules Menu ...............................................................................................3-26

Instruction Manual
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November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents v
Model NGA2000 CLD
Figure 3-42. Analog Output Setup Menu...........................................................................................3-27
Figure 3-43. Signals Menu ...............................................................................................................3-27
Figure 3-44. Output Signal If Assigned Module Fails Menu..............................................................3-28
Figure 3-45. Special Scaling for Concentration Signal Menu............................................................3-28
Figure 3-46. Analog Output Updates per Second Menu ...................................................................3-29
Figure 3-47. Serial Interface Setup Menu .........................................................................................3-29
Figure 3-48. AK Protocol Definitions Menu .......................................................................................3-29
Figure 3-49. Relay Outputs Setup Menu...........................................................................................3-30
Figure 3-50. Choose Source Module Menu ......................................................................................3-30
Figure 3-51. Choose Signal Menu.....................................................................................................3-30
Figure 3-52. System DIO Module Menu............................................................................................3-31
Figure 3-53. System Configuration and Diagnostics Menu...............................................................3-32
Figure 3-54. Diagnostic Menu ...........................................................................................................3-32
Figure 3-55. Analyzer Diagnostics Menu ..........................................................................................3-32
Figure 3-56. Power Supply Voltages Menu.......................................................................................3-33
Figure 3-57. Primary Variable Parameters Menu..............................................................................3-33
Figure 3-58. Temperature Control Menu (Screen 1) .........................................................................3-33
Figure 3-59. Temperature Control Menu (Screen 2) .........................................................................3-33
Figure 3-60. NO/NOx Flow Balance Menu........................................................................................3-34
Figure 3-61. Calculate Factor Using Pressure Ratio Menu...............................................................3-34
Figure 3-62. Load/Save Configuration (CM/MCA) Menu ..................................................................3-34
Figure 3-63. Date and Time Menu.....................................................................................................3-35
Figure 3-64. Security Codes Menu....................................................................................................3-35
Figure 3-65. Define Basic Level Security PIN Menu .........................................................................3-35
Figure 3-66. System Reset Menu......................................................................................................3-36
Figure 3-67. Measuring Efficiency of NO2to NO Converter.............................................................3-41
Figure 3-68. Conversion Efficiency as a Function of Converter Temperature ..................................3-42
Figure 4-1. CLD Module Assembly....................................................................................................4-2
Figure 4-2. Converter Assembly........................................................................................................4-3
Figure 4-3. Detector Assembly ..........................................................................................................4-5
LIST OF TABLES
Table 2-1. Gas Specifications...................................................................................................... 2-2

Instruction Manual
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November 2002
vi Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD

Instruction Manual
760000-C
November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-1
Model NGA2000 CLD
PREFACE
The purpose of this manual is to provide information concerning the components,
functions, installation and maintenance of the NGA 2000 CLD and the System Accessories
of the NGA 2000 System.
Some sections may describe equipment not used in your configuration. The user should
become thoroughly familiar with the operation of this module before operating it. Read
this instruction manual completely.
DEFINITIONS
The following definitions apply to DANGERS, WARNINGS, CAUTIONS and NOTES found throughout
this publication.
DANGER .
Highlights the presence of a hazard which will cause severe personal injury, death, or substantial
property damage if the warning is ignored.
WARNING .
Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not
strictly observed, could result in injury, death, or long-term health hazards of personnel.
CAUTION
Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not
strictly observed, could result in damage to or destruction of equipment, or loss of effectiveness.
NOTE
Highlights an essential operating procedure,
condition or statement.

Instruction Manual
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November 2002
P-2 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
SAFETY SUMMARY
If this equipment is used in a manner not specified in these instructions, protective systems may be
impaired.
AUTHORIZED PERSONNEL
To avoid explosion, loss of life, personal injury and damage to this equipment and on-site
property, all personnel authorized to install, operate and service the this equipment should be
thoroughly familiar with and strictly follow the instructions in this manual. SAVE THESE IN-
STRUCTIONS.
DANGER.
ELECTRICAL SHOCK HAZARD
Do not operate without doors and covers secure. Servicing requires access to live parts which can
cause death or serious injury. Refer servicing to qualified personnel. For safety and proper per-
formance this instrument must be connected to a properly grounded three-wire source of power.
WARNING .
TOXIC AND OXIDIZING GAS
This module generates ozone which is toxic by inhalation and is a strong irritant to throat and
lungs. Ozone is also a strong oxidizing agent. Its presence is detected by a characteristic pungent
odor.
The module's exhaust contains both ozone and nitrogen dioxide, both toxic by inhalation, and may
contain other constituents of the sample gas which may be toxic. Such gases include various ox-
ides of nitrogen, unburned hydrocarbons, carbon monoxide and other products of combustion re-
actions. Carbon monoxide is highly toxic and can cause headache, nausea, loss of consciousness,
and death.
Avoid inhalation of the ozone produced within the module, and avoid inhalation of the sample and
exhaust products transported within the module. Avoid inhalation of the combined exhaust prod-
ucts at the exhaust fitting.
Keep all tube fittings tight to avoid leaks The user is responsible for testing for leakage only at the
inlet and outlet fittings on the rear panel. Periodically, the user should do an internal leak test (with
a test procedure chosen by the user).
Connect rear exhaust outlet to outside vent with stainless steel or Teflon line. Check vent line and
connections for leakage.

Instruction Manual
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November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-3
Model NGA2000 CLD
WARNING.
PARTS INTEGRITY
Tampering or unauthorized substitution of components may adversely affect safety of this product.
Use only factory documented components for repair.
WARNING.
OVERBALANCE HAZARD
This analyzer module may tip instrument over if it is pulled out too far and the Platform is not prop-
erly supported.
WARNING.
INTERNAL ULTRAVIOLET LIGHT
Ultraviolet light from the ozone generator can cause permanent eye damage. Do not look directly at
the ultraviolet source. Use of ultraviolet filtering glasses is recommended.
WARNING.
TOXIC CHEMICAL HAZARD
The ozone generator lamp contains mercury. Lamp breakage could result in mercury exposure.
Mercury is highly toxic if absorbed through the skin or ingested, or if vapors are inhaled.
Handle lamp assembly with extreme care. If the lamp is broken, avoid skin contact and inhalation
in the area of the lamp or the mercury spill.
Immediately clean up and dispose of the mercury spill and lamp residue as follows:
•Wearing rubber gloves and goggles, collect all droplets of mercury by means of a suction pump
and aspirator bottle with a long capillary tube. (Alternately, a commercially available mercury
spill clean-up kit, such as J.T. Baker product No. 4439-01, is recommended.)
•Carefully sweep any remaining mercury and lamp debris into a dust pan. Carefully transfer all
mercury, lamp residue and debris into a plastic bottle which cab be tightly capped.
•Label and return to hazardous material reclamation center. Do not place in the trash, incinerate
or flush down the sewer.
•Cover any fine droplets of mercury in non-accessible crevices with calcium polysulfide and sul-
fur dust

Instruction Manual
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November 2002
P-4 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
WARNING.
HAND INJURY HAZARD
Do not place hands or fingers in the Platform front handles when front panel is open. Dropping the
front panel of the Platform while hand or fingers are inside either handle can cause serious injury.
WARNING.
POSSIBLE EXPLOSION HAZARD
Ensure that all gas connections are made as labeled and are leak free. Improper gas connections
could result in explosion or death.
WARNING.
POSSIBLE EXPLOSION HAZARD
This equipment is not designed and should not be used in the analysis of flammable samples. Use
of this equipment in this way could result in explosion or death.
CAUTION
PRESSURIZED GAS
This module requires periodic use of pressurized gas. See General Precautions for Handling and
Storing High Pressure Gas Cylinders, page P-6
CAUTION
EXTERNALLY RESTRICT SAMPLE FLOW TO LESS THAN 2200 CC/MIN.
No restrictor is provided in the sample inlet of this module. For those users who cannot externally
limit sample flow, accessory restrictor PN 657300 is available from Rosemount Analytical.
To obtain this accessory, call 800-433-6076.
CAUTION
OVER-VOLTAGE SPIKING
If this analyzer module is used with a non-Rosemount Analytical power supply, adding Rosemount
Analytical PN 903341 Current Protector in series with the 24V positive power line will prevent over-
voltage spiking and resultant fuse blowing when powering up the instrument.

Instruction Manual
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November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-5
Model NGA2000 CLD
NOTICE
Software compatibility is necessary for all NGA 2000 components in your system to work to-
gether. The version of your Platform's software must be equal to or greater that the version
of any other module(s) for successful compatibility. If it is not, contact Rosemount Analytical
at 800-433-6076 to order software upgrade kit PN 657150 for the Platform.
You can locate the version of each NGA 2000 component as follows:
Platform Controller Board
Turn power ON.
The display will show "Control Module V2. ...". This is the software version.
Analyzer Module
Located on the right side of the Analyzer Module case.
I/O Module
Located on the backplane connector of the module. If no label is present, the module is Ver-
sion 2.0.

Instruction Manual
760000-C
November 2002
P-6 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
GENERAL PRECAUTIONS FOR HANDLING AND STORING HIGH
PRESSURE GAS CYLINDERS
Edited from selected paragraphs of the Compressed Gas Association's "Handbook of Compressed
Gases" published in 1981
Compressed Gas Association
1235 Jefferson Davis Highway
Arlington, Virginia 22202
Used by Permission
1. Never drop cylinders or permit them to strike each other violently.
2. Cylinders may be stored in the open, but in such cases, should be protected against extremes of weather
and, to prevent rusting, from the dampness of the ground. Cylinders should be stored in the shade when lo-
cated in areas where extreme temperatures are prevalent.
3. The valve protection cap should be left on each cylinder until it has been secured against a wall or bench, or
placed in a cylinder stand, and is ready to be used.
4. Avoid dragging, rolling, or sliding cylinders, even for a short distance; they should be moved by using a suit-
able hand-truck.
5. Never tamper with safety devices in valves or cylinders.
6. Do not store full and empty cylinders together. Serious suckback can occur when an empty cylinder is at-
tached to a pressurized system.
7. No part of cylinder should be subjected to a temperature higher than 125°F (52°C). A flame should never be
permitted to come in contact with any part of a compressed gas cylinder.
8. Do not place cylinders where they may become part of an electric circuit. When electric arc welding, precau-
tions must be taken to prevent striking an arc against the cylinder.

Instruction Manual
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November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-7
Model NGA2000 CLD
NAMUR
97-C219
N
9
6
DOCUMENTATION
The following NGA 2000 CLD instruction materials are available. Contact Customer Service Center or the
local representative to order.
760000 Instruction Manual (this document)
COMPLIANCES
This product may carry approvals from several certifying agencies, including Factory Mutual and the Cana-
dian Standards Association (which is also an OSHA accredited, Nationally Recognized Testing Labora-
tory), for use in non-hazardous, indoor locations.
Rosemount Analytical Inc. has satisfied all obligations from the European Legislation to harmonize the
product requirements in Europe.
This product complies with the standard level of NAMUR EMC. Recommendation (May 1993).
This product satisfies all obligations of all relevant standards of the EMC framework in Australia and New
Zealand.
®
NRTL /C
APPROVED
FM

Instruction Manual
760000-C
November 2002
P-8 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
GLOSSARY OF TERMS
Analyzer Module
The module that contains all sensor/detector components for development of a Primary Variable signal; in-
cludes all signal conditioning and temperature control circuitry.
Backplane
The interconnect circuit board which the Controller Board, Power Supply, Analyzer Module power and net-
work cables, I/O Modules and Expansion Modules plug into.
Control Module
The Operator Interface plus the Controller Board.
Controller Board
The computer board that serves as the Network Manager and operates the Display and Keypad.
Distribution Assembly
The Backplane and the card cages that hold I/O and Expansion Modules.
Expansion Module
A circuit board that plugs into the Backplane from the front of the Platform and performs special features
not related to I/O functions.
I/O Module
A circuit board that plugs into the Backplane from the rear of the Platform. Has a connector terminal for
communication with external data acquisition devices and provides an input/output function.
Operator Interface
The Display and Keyboard.
Platform
Any workable collection of the following: Controller Board, Power Supply, Distribution Assembly, Enclosure
and Operator Interface.
Power Supply
Any of a variety of components that provides conditioned power to other NGA 2000 components, from the
Power Supply Board that plugs into the front of the Backplane in a stand-alone instrument to several larger
ones that can power larger collections of modules and components.
Primary Variable
The measured species concentration value from an Analyzer Module.
Secondary Variable
Data placed on the network by a module regarding current status, e.g., sample flow, source voltage and
other diagnostic information.

Instruction Manual
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November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-9
Model NGA2000 CLD
Softkeys
The five function softkeys located below the front panel display; they assume the function displayed directly
above each on the display, a function dictated by software.
System
Any collection of Analyzer Module(s), Platform(s), I/O Module(s) and Expansion Module(s).

Instruction Manual
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November 2002
P-10 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD

Instruction Manual
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November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-1
Model NGA2000 CLD
SECTION 1
DESCRIPTION AND SPECIFICATIONS
1-1 OVERVIEW
This manual describes the Chemiluminescence
(CLD) Analyzer Module of Rosemount Analyti-
cal's NGA 2000 Series of gas analysis compo-
nents (See Figure 1-1, Figure 1-2 page 1-2 and
Figure 1-3, page 1-3).
The CLD Analyzer Module is designed to con-
tinuously determine the concentration of nitric
oxide and oxides of nitrogen (NO plus nitrogen
dioxide [NO2]) in a flowing gaseous mixture. The
concentration is expressed in parts-per-million.
The CLD Analyzer Module is designed as a
slide-in module (if configured in stand-alone in-
strument fashion), removable from the front of
the Platform, with gas connections made from
the rear. All electronics relative to sample detec-
tion and conditioning are included in this mod-
ule.
1-2 TYPICAL APPLICATIONS
The CLD Analyzer Module has specific applica-
tions in the following areas:
•Oxides of nitrogen emissions from the
combustion of fossil fuels in:
Vehicle engine exhaust
Incinerators
Boilers
Gas appliances
Turbine exhaust
•Nitric acid plant emissions
•De-NOX control system
•Nitric oxide emissions from decaying or-
ganic material (e.g., landfills).
1-3 THEORY OF TECHNOLOGY
The CLD Analyzer Module uses the chemilumi-
nescence method of detection. This technology
is based on the reaction of NO with ozone (O3)
to produce NO2and oxygen (O2). Some of the
NO2molecules thus produced are in an elec-
tronically excited state (NO2* - the "*" refers to
the excitation)). These revert immediately to the
ground state, with emission of photons (essen-
tially, red light). The reactions involved are:
NO + O3→NO2* + O2
NO2* →NO2+ red light
As NO and O3mix in the reaction chamber, the
intensity of the emitted red light is measured by
a photodiode and is proportional to the concen-
tration of NO in the original gas sample.
To measure NOx (NO + NO2), any NO2in the
sample is reduced to NO (at <95% efficiency)
by being continuously passed through a heated
bed of vitreous carbon (this occurs before the
sample gas is presented to the ozone). Any NO
initially present in the sample passes through
this converter stage unchanged before being
routed to the reaction chamber.
The photodiode generates a DC current, which
is then amplified, conditioned and expressed on
the network as the Primary Variable.
1-4 FEATURES
Among the features included in the CLD Ana-
lyzer Module are: 1) ozonator air loss shutoff
and 2) NO/NOx mode capability.

Instruction Manual
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November 2002
1-2 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
TEE
1/8T
KYNAR
VENT CAPILLARY
70cc/min 4 PSIG
634398
PUMP CAPILLARY
1/8 OD TEFLON
657473
SOLENOID
VALVE
NO/NOx
655263
C
NC NO
TEE 1/8T
KYNAR
TOP
NOx TO NO
CONVERTER
655250
CONNECTOR,
GLASS BLUE
CONNECTOR,GLASS
BLUE
SAMPLE PRESSURE
SENSOR 15 PSIG 655253
CONNECTOR, MALE
1/8T-3/8MPT SS
CROSS
1/8T SS
TEE 1/8T
KYNAR
OZONE GENERATOR
659494
AIR RESTRICTOR
430cc/min @ 12 PSIG
658157
FLOW
BALANCE
VALVE
903207
ELBOW
1/8T-1/8MPT KYNAR
ELBOW
1/8T-1/8MPT
KYNAR
BYPASS
FLOW
SENSOR
902931
2 70 cc/min. 5 psig CAPILLARY: PN 659657
200 cc/min. 2 psig CAPILLARY: PN 659658
PRESSURE SENSOR
30 PSIG AIR
655254
PRESSURE SWITCH
662298
.116 ID VITON BLK
MALE CONNECTOR
1/8T-3/8NPT BRS
CROSS
1/8T BRS
MALE CONNECTOR
1/8T-3/8NPT BRS
CONNECTOR
1/8T-1/8NPT BRS
BULKHEAD REDUCER
1/4T - 1/8T BRS
OZONE AIR
REDUCER
1/4T - 1/8T SS
CONNECTOR
1/4T SS
TEE
1/4T - 1/8FPT SS
BULKHEAD
1/4T SS
ELBOW
1/8T - 1/8MPT
SS
BULKHEAD REDUCER
1/4T - 1/8T SS
SAMPLE
EXHAUST
ELBOW 1/8T
SS
REDUCING UNION
1/8T - 1/16T SS
1/8 OD SS
1/8 OD SS
ELBOW 1/8T
SS
REACTION
CHAMBER
EXHAUST
SAMPLE
OZONE
2
1 BRASS/NEOPRENE 655269
STAINLESS STEEL/VITON 659063
TEE ASSEMBLY
1/8T-1/4MPT ELBOW
1/8T-1/4MPT
SS
BACK
PRESSURE
REGULATOR
1
TEE
1/8T
KYNAR
VENT CAPILLARY
70cc/min 4 PSIG
634398
PUMP CAPILLARY
2 PSIG
NO/NOx
SOLENOID
VALVE
655263
C
NC NO
TEE 1/8T
KYNAR
CONNECTOR,
GLASS BLUE
NOx TO NO
CONVERTER
655250
TOP CONNECTOR,GLASS
BLUE
CONNECTOR, MALE
1/8T-3/8MPT SS
CROSS
1/8T SS
SAMPLE PRESSURE
SENSOR 15 PSIG 655253
TEE 1/8T
SS
OZONE GENERATOR
659494
AIR RESTRICTOR
430cc/min @ 12 PSIG
658157
TEE ASSEMBLY
1/8T-1/4MPT ELBOW
1/8T-1/4MPT
SS
BACK
PRESSURE
REGULATOR
FLOW
BALANCE
VALVE
903207
PRESSURE SENSOR
30 PSIG AIR
655254
.116 ID VITON BLK
PRESSURE SWITCH
662298
MALE CONNECTOR
1/8T-3/8NPT BRS
CROSS
1/8T BRS
MALE CONNECTOR
1/8T-3/8NPT BRS
CONNECTOR
1/8T-1/8NPT BRS
BULKHEAD REDUCER
1/4T - 1/8T BRS
OZONE AIR
BULKHEAD REDUCER
1/4T - 1/8T SS
SAMPLE
BULKHEAD
1/4T SS
EXHAUST
UNION 1/4T- 1/8T SS
REDUCING UNION
1/8T - 1/16T SS
1/8 OD SS
1/8 OD SS
REACTION
CHAMBER
EXHAUST
SAMPLE
OZONE
UNION 1/8T SS
TEE 1/8T
KYNAR
SAMPLE CAPILLARY
DETECTOR
Figure 1-1. Flow Diagram - CLD Analyzer Module With Bypass Flow Sensor
Figure 1-2. Flow Diagram - CLD Analyzer Module Without Bypass Flow Sensor