Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
Wet NOx Sample Conversion Module and
Wet CLD Analyzer Module
http://www.processanalytic.com
ESSENTIAL INSTRUCTIONS
READ THIS PAGE BEFORE PROCEEDING!
Rosemount Analytical designs, manufactures and tests its products to meet many national and international standards. Because these instruments are sophisticated technical products, you
MUST properly install, use, and maintain them
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.
to ensure they continue to operate within their
• Read all instructions
prior to installing, operating, and servicing the product.
• If you do not understand any of the instructions, contact your Rosemount Analytical rep-
resentative 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
electrical 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.
Emerson Process Management
Rosemount Analytical Inc.
Process Analytic Division
1201 N. Main St.
Orrville, OH 44667-0901
T (330) 682-9010
F (330) 684-4434
e-mail: gas.csc@EmersonProcess.com
http://www.processanalytic.com
Model NGA2000 WNX and WCLD
TABLE OF CONTENTS
PREFACE...........................................................................................................................................P-1
Definitions ...........................................................................................................................................P-1
Safety Summary .................................................................................................................................P-2
General Precautions For Handling And Storing High Pressure Gas Cylinders .................................P-5
Documentation....................................................................................................................................P-6
Compliances .......................................................................................................................................P-6
Glossary..............................................................................................................................................P-7
1.0 DESCRIPTION AND SPECIFICATIONS..............................................................................1-1
1-1 Overview...................................................................................................................................1-1
1-2 Typical Applications..................................................................................................................1-1
1-3 Specifications – Wet NOx Conversion Module ........................................................................1-6
a. Performance ...............................................................................................................1-6
b. Physical.......................................................................................................................1-6
c. Sample ........................................................................................................................1-6
d. Gas Connections ........................................................................................................1-6
1-4 Specifications - Wet CLD Analyzer Module .............................................................................1-7
a. Performance ...............................................................................................................1-7
b. Physical.......................................................................................................................1-7
c. Sample ........................................................................................................................1-7
d. Gas Connections ........................................................................................................1-8
Instruction Manual
760009-B
November 2002
2.0 INSTALLATION ....................................................................................................................2-1
2-1 Unpacking.................................................................................................................................2-1
2-2 Modification of a Conventional CLD for use in a WNX System ...............................................2-1
2-3 Assembly ..................................................................................................................................2-1
2-4 Location ....................................................................................................................................2-1
2-5 Gases .......................................................................................................................................2-2
a. Overview .....................................................................................................................2-2
b. Pneumatic Connections ..............................................................................................2-2
c. Specifications ..............................................................................................................2-2
2-6 Electrical Connections..............................................................................................................2-5
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. Startup Procedure.......................................................................................................3-7
b. Warm-up of the WNX Module.....................................................................................3-8
c. Warm-up of the WCLD Module...................................................................................3-8
Rosemount Analytical Inc. A Division of Emerson Process Management Contents i
Instruction Manual
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November 2002
d. Binding ........................................................................................................................3-8
3-4 Routine Operation ....................................................................................................................3-8
3-5 Basic Controls and Status ........................................................................................................3-8
a. Analyzer Channel Status ............................................................................................3-9
b. Single Component Display..........................................................................................3-9
c. Multi Component Display ............................................................................................3-9
d. Basic Controls.............................................................................................................3-9
3-6 Display Controls .......................................................................................................................3-10
3-7 Analyzer And I/O, Expert Controls And Setup .........................................................................3-11
a. Range Settings ...........................................................................................................3-12
b. Physical Measurements..............................................................................................3-12
c. Concentration Alarms..................................................................................................3-13
d. Linearization Parameters............................................................................................3-13
e. Linearization Functions ...............................................................................................3-14
f. Response Time............................................................................................................3-16
g. Automatic Range Change...........................................................................................3-17
h. Display Units ...............................................................................................................3-17
i. Physical Measurements & Pressure Limits..................................................................3-18
j. Single Component Display Parameters .......................................................................3-19
3-8 Calibration Procedure...............................................................................................................3-20
a. Calibration Setup ........................................................................................................3-20
b. Basic Controls Calibration...........................................................................................3-22
c. Expert Controls Calibration .........................................................................................3-22
d. Unable to Calibrate .....................................................................................................3-24
3-9 System & Network I/O Module Controls (Setup) – System SIO .............................................3-25
a. Analog Output Setup...................................................................................................3-26
b. Serial interface setup ..................................................................................................3-28
c. Relay Outputs Setup ...................................................................................................3-29
3-10 System & Network I/O Module Controls (Setup) – System DIO ...........................................3-30
3-11 System Configuration and Diagnostics ..................................................................................3-30
a. Diagnostic Menus .......................................................................................................3-31
b. Load/Save Module Configuration ...............................................................................3-33
c. Date and Time.............................................................................................................3-33
d. Security Codes............................................................................................................3-34
e. System Reset..............................................................................................................3-35
3-12 Converter Temperature Adjustment.......................................................................................3-35
3-13 Measurement of Converter Efficiency ....................................................................................3-36
a. Test Setup for Measurement of Conversion Efficiency ..............................................3-36
b. Test Procedure ...........................................................................................................3-36
c. Subnormal Conversion Efficiency ...............................................................................3-38
d. Replacement of Converter ..........................................................................................3-38
e. Capillaries ...................................................................................................................3-38
f. TEA Scrubber ..............................................................................................................3-38
Model NGA2000 WNX and WCLD
4.0 MAINTENANCE AND SERVICE – WET NOX .....................................................................4-1
4-1 Overview...................................................................................................................................4-1
4-2 Power Fuse ..............................................................................................................................4-1
4-3 Peristaltic Pump .......................................................................................................................4-3
a. Peristaltic Pump - Replacement .................................................................................4-3
b. Replacing Peristaltic Pump Tube................................................................................4-4
4-4 Oven Components ...................................................................................................................4-5
a. Converter Thermostat .................................................................................................4-5
b. Manifold Thermistor and Case Thermistor .................................................................4-5
ii Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
c. Temperature Sensor ...................................................................................................4-5
d. Converter .....................................................................................................................4-6
e. Oven Fan ....................................................................................................................4-8
f. Regulator/Manifold Assembly ......................................................................................4-9
4-5 LON/Power Module ..................................................................................................................4-11
4-6 Power Module ..........................................................................................................................4-11
4-7 Electronics Assembly ...............................................................................................................4-11
a. Computer Board..........................................................................................................4-13
b. Module Function Board...............................................................................................4-13
4-8 Exhaust Fan .............................................................................................................................4-14
a Exhaust Fan Screen ....................................................................................................4-14
4-9 Intake Fan.................................................................................................................................4-15
4-10 Dehumidifier ...........................................................................................................................4-16
5.0 MAINTENANCE AND SERVICE – WET CLD......................................................................5-2
5-1 Power Fuse Replacement........................................................................................................5-2
5-2 Fans..........................................................................................................................................5-4
a. Fan Replacement........................................................................................................5-4
b. Cleaning EMI Filters....................................................................................................5-4
5-3 Transistor Assembly Replacement ..........................................................................................5-4
5-4 Ozone Generator......................................................................................................................5-4
a. Preventive Maintenance .............................................................................................5-4
b. Replacing ....................................................................................................................5-4
5-5 Ozone Generator Power Supply Replacement......................................................................5-4
5-6 Replacing Printed Circuit Boards .............................................................................................5-6
a. Computer Board..........................................................................................................5-6
b. Signal Board ...............................................................................................................5-7
c. Driver Board ................................................................................................................5-7
d. Power Supply Board ...................................................................................................5-9
e. LON/Power Module.....................................................................................................5-10
5-7 Prom .........................................................................................................................................5-11
5-8 Pressure Switch Replacement .................................................................................................5-12
5-9 Detector ....................................................................................................................................5-13
a. Removing Detector from Analyzer Module .................................................................5-14
b. Replacing Detector Components................................................................................5-14
5-10 Vent and Pump Capillaries.....................................................................................................5-20
5-11 Sample and Ozone Pressure Sensors...................................................................................5-20
5-12 Cleanup of WCLD due to Carryover of Water from WNX Module. ........................................5-21
Instruction Manual
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November 2002
6.0 REPLACEMENT PARTS ......................................................................................................6-1
6-1 Matrix........................................................................................................................................6-1
6-2 WNX .........................................................................................................................................6-2
a. 656715 Converter .......................................................................................................6-2
b. 656769 Dehumidifier...................................................................................................6-2
6-3 WCLD .......................................................................................................................................6-2
a. Detector.......................................................................................................................6-2
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
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Instruction Manual
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November 2002
Figure 1-1. WNX Module Flow System ..........................................................................................1-2
Figure 1-2. WNX Module – Major Components .............................................................................1-3
Figure 1-3. WCLD Module Flow Diagram ......................................................................................1-4
Figure 1-4. WCLD Module – Major Components ...........................................................................1-5
Figure 2-1. Rear Panel Connections of the WNX Module..............................................................2-4
Figure 2-2. Rear Panel Connections of the WCLD Module ...........................................................2-4
Figure 2-3. WNX Intake Fan Location ............................................................................................2-4
Figure 2-4. Electrical Connections..................................................................................................2-5
Figure 2-5. WNX - Outline and Mounting Dimensions ...................................................................2-6
Figure 2-6. WCLD - Outline and Mounting Dimensions .................................................................2-7
Figure 2-7. WNX - Wiring Diagram.................................................................................................2-8
Figure 2-8. WCLD – Wiring Diagram............................................................................................2-9
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..................................................................................................3-3
Figure 3-5. Main Menu Functions...................................................................................................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 ....................................................................................................3-9
Figure 3-10. Display Controls Menu...............................................................................................3-10
Figure 3-11. Analyzer and I/O Expert Controls and Setup Menu...................................................3-11
Figure 3-12. Expert Controls Menu ................................................................................................3-11
Figure 3-13. Range Settings Menu ................................................................................................3-12
Figure 3-14. Physical Measurements Menu...................................................................................3-12
Figure 3-15. Concentration Alarm Setup Menu..............................................................................3-13
Figure 3-16. Linearization Parameters Menu .................................................................................3-13
Figure 3-17. Linearity Coefficients Menu........................................................................................3-14
Figure 3-19. Polynomial Setup Menu .............................................................................................3-14
Figure 3-20. Gas Concentrations Menu .........................................................................................3-15
Figure 3-21. Midpoint Correction Setup Menu ...............................................................................3-15
Figure 3-22. Response time/delay Parameters..............................................................................3-16
Figure 3-23. Automatic Range Control Menu.................................................................................3-17
Figure 3-24. Actual Switch Levels Menu ........................................................................................3-17
Figure 3-25. Display Units Menu ....................................................................................................3-17
Figure 3-26. Physical Measurements Menu...................................................................................3-18
Figure 3-27. Pressure Limits Menu ................................................................................................3-18
Figure 3-28. Temperature Limits Menu ..........................................................................................3-18
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 .................................................................................3-21
Figure 3-33. Analyzer Zero Display ................................................................................................3-22
Figure 3-34. Expert Controls Menu ................................................................................................3-22
Figure 3-35. Zero/Span Calibration Menu ......................................................................................3-23
Figure 3-36. Analyzer Zero Menu...................................................................................................3-23
Figure 3-37. Zero/Span Diagnostic Data Menu..............................................................................3-23
Figure 3-38. Calibration Factors Menu...........................................................................................3-24
Model NGA2000 WNX and WCLD
LIST OF ILLUSTRATIONS
iv Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Figure 3-39. Range Factors Menu..................................................................................................3-24
Figure 3-40. Range Factors Display...............................................................................................3-24
Figure 3-41. System & Network I/O Module Controls Menu ..........................................................3-25
Figure 3-42. System SIO Module Menu .........................................................................................3-25
Figure 3-43. Analog Output Setup Menu........................................................................................3-26
Figure 3-44. Analog Output Setup Menu........................................................................................3-26
Figure 3-45. Signals Menu ............................................................................................................3-26
Figure 3-46. Output Signal If Assigned Module Fails Menu...........................................................3-27
Figure 3-47. Special Scaling for Concentration Signal Menu.........................................................3-28
Figure 3-48. Analog Output Updates per Second Menu ................................................................3-28
Figure 3-49. Serial Interface Setup Menu ......................................................................................3-28
Figure 3-50. AK Protocol Definitions Menu ....................................................................................3-29
Figure 3-51. Relay Outputs Setup Menu........................................................................................3-29
Figure 3-52. Choose Source Module Menu ...................................................................................3-29
Figure 3-53. Choose Signal Menu..................................................................................................3-29
Figure 3-55. System Configuration and Diagnostics Menu............................................................3-30
Figure 3-56. Diagnostic Menu ........................................................................................................3-31
Figure 3-57. Analyzer Diagnostics Menu .......................................................................................3-31
Figure 3-58. Power Supply Voltages Menu....................................................................................3-31
Figure 3-59. Primary Variable Parameters Menu...........................................................................3-31
Figure 3-60. Physical Measurements Menu...................................................................................3-32
Figure 3-61. Temperature Control Menu (Screen 1)......................................................................3-32
Figure 3-62. Temperature Control Menu (Screen 2)......................................................................3-32
Figure 3-63. NO/NOx Flow Balance Menu.....................................................................................3-32
Figure 3-64. Calculate Factor Using Pressure Ratio Menu............................................................3-33
Figure 3-65. Load/Save Configuration (CM/MCA) Menu ...............................................................3-33
Figure 3-66. Date and Time Menu..................................................................................................3-33
Figure 3-67. Security Codes Menu.................................................................................................3-34
Figure 3-68. Define Basic Level Security PIN Menu ......................................................................3-34
Figure 3-69. System Reset Menu...................................................................................................3-35
Figure 3-70. Measuring Efficiency of NO
Figure 3-71. Conversion Efficiency as a Function of Converter Temperature ...............................3-40
Figure 4-1. WNX - Power Fuse Location........................................................................................4-1
Figure 4-2. WNX - Removing Module Cover..................................................................................4-3
Figure 4-3. WNX - Replacing Peristaltic Pump ..............................................................................4-3
Figure 4-4. WNX - Replacing Peristaltic Pump Tube .....................................................................4-4
Figure 4-5. WNX - Removing Converter Thermostat, Manifold Thermistor Temperature Sensor
and Converter..............................................................................................4-6
Figure 4-6. WNX Converter Assembly ...........................................................................................4-7
Figure 4-7. WNX - Removal of Oven Fan ......................................................................................4-8
Figure 4-8. WNX - Removing Rear Panel ......................................................................................4-9
Figure 4-9. WNX - Removing Regulator/Manifold Assembly .........................................................4-10
Figure 4-10. WNX - Regulator/Manifold Assembly.........................................................................4-11
Figure 4-11. WNX - Removing LON/Power Module, Power Module and Electronics Assembly...4-12
Figure 4-12. WNX - Electronics Assembly (Exploded View)..........................................................4-13
Figure 4-13. WNX - Removal of Exhaust Fan and Screen ............................................................4-14
Figure 4-14. WNX - Removal of Intake Fan ...................................................................................4-15
Figure 4-15. WNX - Removal of Dehumidifier ................................................................................4-16
Figure 5-1. WCLD Power Fuse Location........................................................................................5-4
Figure 5-2. WCLD - Removing Cover ............................................................................................5-3
Figure 5-3. WCLD - Removal of Intake and Exhaust Fans ............................................................5-3
Figure 5-4. WCLD - Removal of Ozone Generator, Ozone Generator Power Supply, and
Transistor Assembly ....................................................................................5-6
to NO Converter...........................................................3-39
2
Instruction Manual
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November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents v
Instruction Manual
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November 2002
Figure 5-5. WCLD - Removing Computer Board and Bracket From Analyzer Module..................5-6
Figure 5-6. WCLD – Removing Computer Board From Bracket ....................................................5-7
Figure 5-7. WCLD – Removing Signal Board, Driver Board ..........................................................5-8
Figure 5-8. WCLD - Removing Power Supply/LON Assembly from Analyzer Module ..................5-9
Figure 5-9. WCLD - Power Supply Board/LON Power Module Assembly .....................................5-10
Figure 5-10. WCLD - PROM Location on Computer Board ...........................................................5-11
Figure 5-11. WCLD - Removing Pressure Switch and Detector from Analyzer Module................5-12
Figure 5-12. WCLD Detector – Cutaway View ...............................................................................5-13
Figure 5-13. WCLD - Removing Heater Thermostat Assembly from Detector ..............................5-14
Figure 5-14. WCLD - Removing Reaction Chamber and Sapphire Window from Detector...........5-15
Figure 5-15. WCLD - Removing the Photodiode from the Detector...............................................5-16
Figure 5-16. WCLD - Photodiode/Socket (Exploded View)............................................................5-17
Figure 5-17. WCLD - Capillary Assembly.......................................................................................5-18
Figure 5-18. WCLD - Removing the Sample Capillary from the Detector......................................5-19
Figure 5-19. WCLD - Replacing Pressure Sensors........................................................................5-20
Model NGA2000 WNX and WCLD
vi Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
Model NGA2000 WNX and WCLD
November 2002
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.
760009-B
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.
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications P-1
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
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 INSTRUCTIONS.
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 performance 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 oxides of nitrogen, unburned hydrocarbons, carbon monoxide and other products of combustion reactions. 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 products 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.
P-2 Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
Model NGA2000 WNX and WCLD
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 properly 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.
November 2002
760009-B
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
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications P-3
Instruction Manual
760009-B
November 2002
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.
This module requires periodic use of pressurized gas. See General Precautions for Handling and
Storing High Pressure Gas Cylinders, page P-5
STATIC SENSITIVE COMPONENTS
Circuit boards in this instrument are static-sensitive. Take all static precautions when handling
them.
Model NGA2000 WNX and WCLD
WARNING.
HAND INJURY HAZARD
CAUTION .
PRESSURIZED GAS
CAUTION.
NOTICE
Software compatibility is necessary for all NGA 2000 components in your system to work together.
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 NL657150 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 Version
2.0.
P-4 Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
760009-B
Model NGA2000 WNX and WCLD
November 2002
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 located 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 suitable 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 attached to a pressurized system.
7. No part of cylinder should be subjected to a temperature higher than 125
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, precautions must be taken to prevent striking an arc against the cylinder.
°
F (52°C). A flame should never be
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications P-5
Instruction Manual
9
6
760009-B
November 2002
Model NGA2000 WNX and WCLD
DOCUMENTATION
The following NGA 2000 WNX and WCLD instruction materials are available. Contact Customer Service
Center or the local representative to order.
760009 Instruction Manual (this document)
COMPLIANCES
The Wet NOx Conversion Module and the Wet CLD Analyzer Module carry approvals from
several certifying agencies, including the Canadian Standards Association (which is also an
OSHA accredited, Nationally Recognized Testing Laboratory), and TUV for use in nonhazardous, indoor locations.
Rosemount Analytical Inc. has satisfied all obligations from the European Legislation to
harmonize the product requirements in Europe.
These products comply 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.
®
97-C219
NAMUR
N
P-6 Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
Model NGA2000 WNX and WCLD
November 2002
GLOSSARY OF TERMS
Analyzer Module
The module that contains all sensor/detector components for development of a Primary Variable signal; includes all signal conditioning and temperature control circuitry.
Backplane
The interconnect circuit board which the Controller Board, Power Supply, Analyzer Module power and network 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
760009-B
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.
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications P-7
Instruction Manual
760009-B
November 2002
Softkeys
The five function keys 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).
Model NGA2000 WNX and WCLD
P-8 Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
SECTION 1
DESCRIPTION AND SPECIFICATIONS
Instruction Manual
760009-B
November 2002
1-1 OVERVIEW
This manual describes the Wet NOx (WNX)
Analysis System, a member of Rosemount
Analytical's NGA 2000 Series of gas analysis
components. The system consists of two
modules: (1) a WNX Conversion Module (P/N
195009) and a WET CLD (WCLD) Chemiluminescense Analyzer Module (195110).
The WCLD Module P/N 195110 contains only
the functionality that is required in order to
supplement the functionality of the WNX
Module. An existing CLD Module P/N 195005
can be used in place of the WCLD Module
P/N 195110 after being suitably modified in
the field. This five-step modification disables
unrequired functionality. It is described in Section 2-2.
The WNX Module (Figure 1-1 and Figure 1-2)
accept a hot, wet sample stream, cools it, and
dehumidifies it for use by the WCLD Analyzer
Module (Figure 1-3 and Figure 1-4). The hot
sample is introduced to a converter (a heated
bed of vitreous carbon) which converts all oxides of nitrogen (NO
The converter can be bypassed if the sample
contains just NO. Once the sample contains
only NO, it is directed to the dehumidifier, a
Peltier device located outside of the heated
compartment. The water vapor is cooled and
condensed, and the condensate is removed
periodically with a peristaltic pump. The cool,
x) to nitric oxide (NO).
dry sample gas is sent to the WCLD for
analysis.
The WCLD Module uses chemiluminescense
detection technology, a technique that is
based on the reaction between nitric oxide
(NO) and ozone (O
oxygen (O2). Some of the NO2 molecules thus
produced are in an electronically excited state
(NO
2*). These revert immediately to the
ground state, with emission of photons (essentially, red light). The reactions involved
are:
NO + O
NO
The intensity of the emitted red light is proportional to the concentration of NO in the original gas sample and is measured by a
photodiode.
1-2 TYPICAL APPLICATIONS
The major application of the WNX System is
analysis of internal combustion engine exhaust.
3 → NO2* + O2
2* → NO2 + red light
3) to produce NO2 and
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-1
Instruction Manual
Y
g
760009-B
November 2002
SAMPLE OUT
FLOW BALANCE
EXHAUST GAS
EXHAUST LIQUID
SAMPLE IN
RESTRICTOR
Needle Valve
Restrictor
70 cc/min.
Model NGA2000 WNX and WCLD
M
Out
F
MANIFOLD
ASSEMBL
Pressure
Re
ulator
Figure 1-1. WNX Module Flow System
Solenoid
Valve
B
G
H
Top
CONVERTER
DEHUMIDIFIER
L
In
Drain
PERISTALTIC
PUMP
Top
K
1-2 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Peristaltic Pump
Power Module
LON/Power
Module
Computer Board
Module Function Board
Converter
Manifold Assembly
Module cover and oven cover removed for clarity.
Figure 1-2. WNX Sample Conversion Module – Major Components
Instruction Manual
760009-B
November 2002
Intake Fan
Dehumidifier
Exhaust Fan
Rear Panel –
See Figure 2-1 for connections
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-3
Instruction Manual
PRESSURE
PUMP CAPILLARY
SAMPLE CAPILLARY
PRESSURE SENSOR
760009-B
November 2002
OZONE AIR
REDUCING BULKHEAD
1/4T - 1/8T BRASS
SWITCH
CONNECTOR
1/8T - 1/8FPT BRASS
TEE 1/8T BRASS
EXHAUST
REDUCING BULKHEAD
1/4T - 1/8T SS
PORT CONNECTOR
1/8T CRES
TUBE ADAPTER
BRASS
TEE 1/8T CRES
CONNECTOR
1/8T - 3/8MPT BRASS
UNION 1/8T SS
REDUCING BULKHEAD
1/4T - 1/8T SS
SAMPLE
Note: For the SAMPLE INLET, a 1/4T - 1/8T Reducer Fitting is supplied in the ship kit.
Model NGA2000 WNX and WCLD
OZONE
GENERATOR
RESTRICTOR
1/8T - 1/8MPT
PRESSURE SENSOR
1/8 OD TEFLON
CROSS 1/8T SS
CONNECTOR
1/8T - 3/8MPT SS
UNION 1/8T SS
UNION 1/8T SS
REDUCING UNION
1/8T - 1/16T SS
70 cc/min OR 200 cc/min
OZONE
EXHAUST
REACTION
CHAMBER
SAMPLE
1-4 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Figure 1-3. WCLD Module Flow Diagram
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
Driver Board
Ozone Generator
Sample Pressure
Sensor
Ozone Pressure
Sensor
Signal Board
Inlet/Outlet Fittings
Fans
Detector
Sample Capillary
Pressure Switch
Power Supply Board
Flow Balance Needle Valve
Computer
Board
Figure 1-4. WCLD Module – Major Components
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-5
Instruction Manual
760009-B
November 2002
1-3 SPECIFICATIONS – WET NOX CONVERSION MODULE
a. Performance
Measurement Species:.................. NO, NOx
Ranges: ......................................... 0 to 10 ppm through 0 to 10,000 ppm NOx maximum
Delay Time: ................................... 5 seconds, maximum (Does not include response time of compan-
Ambient Temperature:................... 0°C to 45°C (32°F to 113°F)
Power Requirements:.................... 24V DC 192W
For the following parameters, the Wet NOx Sample Conditioning Module and the Wet CLD Analyzer
Module together shall meet the performance specifications of the companion CLD Module.
Repeatability Response Time
Minimum Detectable Level Drift
Noise Effect of Temperature
Linearity
b. Physical
Model NGA2000 WNX and WCLD
ion CLD)
Case Classification:....................... General purpose for installation in weather-protected area
Dimensions:................................... See Figure 2-5
Weight: .......................................... 10.6 kg (23.5 lbs.)
Mounting:....................................... Custom-installed in a panel (not used in a Platform)
Max. Length of LON Cable:........... 1600m (1 mile)
c. Sample
Temperature: ................................ 70°C or less
Flow Rate: ................................... 750 to 2200 ml/min.
Pressure ........................................ 344 to 620 hPa ( 5 to 9 psig)
Particles: ...................................... Filtered to <2 microns
Moisture: .........................................less than 15% water vapor by volume, no entrained liquid
Materials in contact with Sample:.. Stainless steel, Teflon, glass
d. Gas Connections
Sample In ...................................... 1/4” O.D. tube fitting, stainless steel
Exhaust Gas .................................. 1/4” O.D. tube fitting, stainless steel
Sample Out.................................... 1/8” O.D. tube fitting, stainless steel
Exhaust Liquid............................... 1/4” O.D. tube fitting, stainless steel
1-6 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
1-4 SPECIFICATIONS - WET CLD ANALYZER MODULE
a. Performance
See the Preface section of the Platform Components manual for specifications regarding Platformrelated components (e.g., case dimensions) and the Preface of the I/O Module manual for specifications regarding I/O (e.g., relay outputs).
Measurement Species................... NO
Ranges .......................................... 0 to 10 ppm through 0 to 10,000 ppm; 500 ppm NO
Repeatability.................................. ±0.5% of fullscale (at constant temperature)
Minimum Detectable Level ............ 0.1 ppm
Noise ............................................. <1% of fullscale, peak to peak
Linearity ......................................... ±1% of fullscale
Response Time
<3 sec. for 90% of fullscale for ranges of less than 25 ppm
Drift (at constant temperature) ...... Zero - ±1% of fullscale/24 hours, <2% of fullscale/week
Span - <±1% of fullscale/24 hours, <3% of fullscale/week
Effect of Temperature.................... <2% of fullscale (over any 10°C ambient temperature variation in-
Ambient Temperature.................... 10°C to 40°C (50°F to 104°F)
Power ............................................ 24V DC 70W
b. Physical
1
............................ <1 sec. for 90% of fullscale for ranges of 25 ppm or greater
terval for a rate of change no greater than 10°C/hour)
Instruction Manual
760009-B
November 2002
Case Classification ........................ General purpose for installation in weather-protected area
Maximum Length of LON Cable.... 1600m (1 mile)
Dimensions.................................... See Figure 2-6
Weight ........................................... 8.1 kg (18 lbs.)
Mounting........................................ Inside a Platform or custom-installed in a panel
c. Sample
Temperature .................................. 0°C to 55°C (32°F to 131°F)
Flow rate........................................ Approximately 400 ml/min.
Pressure ........................................ 482 hPa (±138 hPa), 7 psig (±2 psig)
Particles ........................................ Filtered to <2 microns
Dewpoint........................................ 5.5°C below ambient temperature, no entrained liquid
Materials in contact with Sample... Stainless steel, glass, Teflon, Kynar
Ozonator Gas ................................ Clean, dry air or oxygen; flow rate: 1 L/min.
Max. pressure: 1702 hPa to 2047 hPa (10 to 15 psig)
1
Does not include delay time introduced by Wet NOx Conversion Module
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-7
Instruction Manual
760009-B
November 2002
d. Gas Connections
Ozone Air....................................... 1/4” O.D. tube fitting, stainless steel
Exhaust.......................................... 1/4” O.D. tube fitting, stainless steel
Sample
1
........................................ 1/8” O.D. tube fitting, stainless steel
Model NGA2000 WNX and WCLD
1
A 1/4T - 1/8T Reducer is supplied in the ship kit
1-8 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
SECTION 2
INSTALLATION
Instruction Manual
760009-B
November 2002
2-1 UNPACKING
If either the WNX Sample Conversion Module
or the WCLD Chemiluminescense Analysis
Module is received as a separate unit, carefully examine the shipping carton and contents for signs of damage. Immediately notify
the shipping carrier if the carton or contents is
damaged. Retain the carton and packing material until all components associated with the
module are operational.
2-2 MODIFICATION OF A CONVENTIONAL CLD
FOR USE IN A WNX SYSTEM
A WCLD Module, P/N 195110, or its’ functional equivalent, is required for use in a WNX
System. Five steps must be taken to modify a
conventional CLD module, P/N 195005, to be
functionally equivalent. These five steps apply
just to the CLD Module. Refer to the instructions below and to the manual for that product.
Step 1 - There must not be a flow restrictor in
the SAMPLE IN fitting of the CLD. If there is,
the bulkhead fitting in which it is contained
must be removed and replaced with a similar
bulkhead fitting that does not contain a flow
restrictor. Then, for the remainder of this
preparation, temporarily place a restriction in
the sample line to the CLD to limit flow to less
than 2200 cc/min. This restriction must be removed before plumbing into a WNX System.
Step 2 - With zero gas flowing, adjust the
back-pressure regulator that controls capillary
head pressure in the CLD to 5 - 6 psig (344 413 hPa). Do not change this adjustment
later.
Step 5 - Now that the CLD is operating properly, disconnect power from it, turn off all
gases, and remove the restriction that was
placed in the sample line. The CLD is then
ready for use in a WNX System.
2-3 ASSEMBLY
If the WCLD module requires assembly with
other components (e.g., a Multi Module Enclosure), do so at this time. Following the
guides on the bottom of the enclosure, carefully slide the module halfway into place. The
WNX module may not be used in a Platform.
CAUTION.
HAND INJURY HAZARD
Do not place hands or fingers in enclosure
front handles when the front panel is open.
Dropping front panel while hand or fingers
are inside either handle can cause serious
injury.
Lift the spring-loaded pins on the front of the
module, and carefully slide it the rest of the
distance. Secure the module in position by releasing the pins, which seat in the available
holes in the bottom of the case. Connect one
of the network cables to either NETWORK 1
or NETWORK 2 connections on the front
panel of the module. Connect one of the
power cables to the power connection on the
front panel also. (See Figure 2-4.)
Secure the front panel with the six screws
provided.
2-4 LOCATION
Step 3 - Select the NO mode. Do not change
this adjustment later.
Step 4 - Verify that the CLD responds properly
to an appropriate span gas.
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-1
Install the modules in a clean, level,
weather-proofed, vibration-free location free
from extreme temperature variations and
moisture. For best results, install the Wet NOx
Module near the sample stream and the CLD
Module near the Wet NOx Module to minimize
sample transport time.
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
Operating ambient temperature is 10°C to
40°C (50°F to 104°F). Temperature change
should not exceed 10°C (18°F) per hour. The
same restriction on temperature range applies
to the location of the air and span gas cylinders.
NOTE
Unrestricted air flow at the rear of each
module is critical to its performance and
reliability (See Figure 2-1 and Figure 2-2).
Unrestricted air flow at the left side (air intake) of the WNX is critical to its performance and reliability (Figure 2-3).
2-5 GASES
a. Overview
The WNX Module is used in concert with
a WCLD Analyzer Module, either a standard CLD or one specially configured for
use with a WNX Module. In either case,
certain functions are retained by the CLD
Module while other functions are assumed by the WNX Module, and these
functions determine gas connections to
each module.
b. Pneumatic Connections
All pneumatic connectors on both modules are ferrule-type compression fittings.
The SAMPLE OUT connection of the
WNX Module is 1/8-inch. The SAMPLE IN
connection of the CLD Module is either
1/4-inch (WCLD P/N 191110 and CLD
P/N 194005). The 1/4-inch to 1/8-inch reducing fitting supplied with the WCLD (or
CLD) should be used, as close as practical to the CLD Module. Interconnect the
two modules using 1/8-inch teflon or
stainless steel tubing. The tubing should
be as short as practical.
Connect lines for SAMPLE-IN, GAS EXHAUST, and EXHAUST LIQUID to appropriately labeled fittings on the rear
panel of the WNX Module. A heated line
with materials of construction that are
suitable for the sample must be used for
the sample line to the WNX Module. The
remaining lines may be teflon or stainless
steel.
Connect lines for AIR/OXYGEN and EXHAUST to appropriately labeled fittings on
the rear panel of the CLD Module.
The hot, wet sample and all calibration
standard gases are introduced to the
WNX Module at the SAMPLE IN connection. The dry sample gas emerging from
the SAMPLE OUT connection of the WNX
Module is conveyed to the CLD SAMPLE
IN connection via appropriate tubing.
The CLD retains all ozonator functions,
including introduction of breathing grade
air or oxygen at its OZONATOR AIR connection.
Calibration gases and ozonator-source
gas should be supplied from a cylinder
equipped with a clean, non-corrosive,
two-stage regulator. A shutoff valve is
recommended.
The exhaust lines should be 1/4 inch (6.3
mm) or larger. These lines must not be
restricted.
c. Specifications
Calibration Gases
Either U.S.P. breathing grade air or nitrogen is recommended for use as zero gas.
A mixture of NO or NO
of nitrogen is recommended as span gas.
For maximum accuracy, the concentration
of NO in the span gas should be about
the same as that in the expected sample
stream.
Sample
The sample to the WNX Module must be
clean and hot before entering the WNX
Module. Sample should be filtered for particulates down to two microns. The sam-
2 in a background
2-2 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
ple to the CLD Module should be clean
and dry.
airborne contaminants, the user should
periodically do an internal leak test (with a
test procedure chosen by the user).
Ozonator Source Gas
For analyzers with ranges less than
0 to 2,500 ppm, U.S.P. breathing grade
air should be used for generation of the
ozone required for the chemiluminescence reaction. For ranges greater than
0 to 2,500 ppm, breathing grade oxygen
is required.
Should be introduced at the
AIR/OXYGEN fitting of the CLD Module at
between 690 and 1035 hPa-gauge (10
and 15 psig) of ozonator air (or oxygen, if
appropriate)
Pressure
Zero gas, span gas and sample should be
introduced at the SAMPLE IN fitting of the
WNX Module at between 345 and 620
hPa-gauge (5 and 9 psig). Bypass flow
rate should be approximately 1000
cc/min. with backpressure regulator pres-
Limits and health effects of some of the
airborne contaminates are shown below.
Federal health standards are established
to provide an adequate margin of safety in
protecting public health. As specified by
Federal air quality standards, the maximum permissible outdoor air level is:
Ozone (O
3) (one hour average):
Not to exceed 0.12 ppm (one hour
average) more than one day per
year.
Nitrogen Oxides (NOx) includes Nitric
Oxide (NO) and Nitrogen Dioxide (NO
2).
Nitrogen Oxides make up a major
part of PM
10 - fine particle pollution
(less than 10 micrometers in size).
Nitric Oxide (NO) exposed to Ozone
(O
3) produces Nitrogen Dioxide
(NO
2) and Oxygen (O2).
sure adjusted to 344 hPa (5 psig).
Nitrogen Dioxide (one year average):
NOTE
At no time should flow of zero gas,
span gas, or sample exceed
2200 cc/min. Damage to internal components may occur if this flow level is
exceeded.
NOTE
At no time should ozonator gas pressure exceed 2070 hPa-gauge (30 psig).
Damage to internal components may
occur if this pressure level is exceeded.
Not to exceed 0.053 ppm for one
year average
Evidence suggests that repeated exposure to high ozone levels may cause irreversible damage to the lung. Health
effects of ozone are complicated by the
presence of other pollutants, such as nitric acid, PM
10 and nitrogen dioxide. In
animals, ozone mixed with acids has
been found to be more harmful than
ozone alone. The harm depends on the
situation: The person who is exposed to
pollution (health, age, sex, nutritional and
smoking status, sensitivity), the type and
Leak Test
Each module is completely tested at the
factory for gas leakage. During installation, the user is responsible for leak testing only at the inlet and outlet fittings on
the rear panel. To prevent exposure to
concentration of pollutant, the place, time,
temperature and humidity. Inhaled fine
particles pose a health risk when they
penetrate deeply into respiratory tract.
Most particle penetration into lungs occur
during mouth breathing.
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-3
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
SAMPLE OUT
EXHAUST LIQUID
FLOW BALANCE
SAMP LE IN
EXHAUST GAS
CONVERT. VENT
RESTRICTOR
EXHAUST FAN
Figure 2-1. Rear Panel Connections of the WNX Module
OZONATOR AIR
EXHAUST
SAMPLE IN
EXHAUST FAN
INTAKE FAN
Figure 2-2. Rear Panel Connections of the WCLD Module
INTAKE FAN
Figure 2-3. WNX Intake Fan Location
2-4 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
2-6 ELECTRICAL CONNECTIONS
Two electrical connections are required on
each module: POWER and NETWORK.
These connections are located on the front
panel of each module, Figure 2-4, Figure 2-5
and Figure 2-6. On each module, two
Instruction Manual
760009-B
November 2002
NETWORK connectors are available, either of
which is appropriate for: 1) interconnection
with the network or 2) "daisy-chaining" with
other NGA 2000 components. Connect enclosure power or external 24 VDC power source
to the POWER connection of each module.
(The WNX Module may use as much as 8 A
power).
NETWORK1
NETWORK2
POWER
FUSE
Figure 2-4. Electrical Connections
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-5
Instruction Manual
760009-B
November 2002
FRONT VIEW
Model NGA2000 WNX and WCLD
[213]
[208]
[173]
[15]
[13]
SIDE VIEW
.5
[13]
[109]
[28]
22.4
[572]
[72]
[152]
1.3
[33]
REAR VIEW
Dimensions:
INCH
[MM]
3.5
[88]
1.4
[37]
SAMPLE
EXHAUST LIQUID
FLOW BALANCE
SAMPL E IN
EXHAUST GAS
CONVERT. VENT
RESTRICTOR
7.3
[185]
4.2
[106]
4.1
[104]
.6
[14]
1.7
[43]
2.7
[68]
3.6
[92]
Figure 2-5. WNX - Outline and Mounting Dimensions
2-6 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
[
]
[23].9[23].9[33]
FRONT VIEW
8.2
[208]
8.4
[213]
[10]
Instruction Manual
760009-B
November 2002
.4
.7
[18]
[20]
.8
SIDE VIEW
.5
[13]
4.3
[109]
1.1
[28]
2.8
[71]
6.0
[152]
17.5
[445]
1.3
[33]
REAR VIEW
4.1
4.1
104
Dimensions:
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-7
INCHES
[MM]
1.3
Figure 2-6. WCLD - Outline and Mounting Dimensions
Instruction Manual
760009-B
November 2002
CONVERTER
HEATER
CONVERTER
THERMOSTAT
PELTIER DEVICE
IN DEHUMIDIFIER
DEHUMIDIFIER
THERMOSTAT
Model NGA2000 WNX and WCLD
PUMP
ON/OFF
SWITCH
OVEN
FAN
MANIFOLD
HEATERS
OVEN
THERMOSTAT
FIN
FAN
NOx/NO
SOLENOID
FIN
FAN
PERISTALTIC
PUMP
RTD IN
CONVERTER
J22
J1
J23
J2
J11
CABLE, DIGITAL I/O
CABLE, CONTROLLER
POWER
CABLE, ANALOG I/O
CABLE, DIAGNOST ICS
J1
J2
J3
J12
J4
COMPUTER
PCB ASSEMBLY
MODULE
J14
J6
J6 J6 J4J5
J7
J20
MODULE FUNCTION PCB ASSEMBLY
HARNESS, MODULE FUNCTION
5, 24 VOLT POWER
J4 J16 J15 J18 J8
GND
J19
J13 J3 J17
POWER
MODULE
PCB ASSEMBLY
J5
CABLE, INTERNAL NETWORK
HARNESS, MODULE FUNCTION
±15 VOLT POWER
J3
J2
J1
PCB ASSEMBLY
LON POWER
J5
J10
J5
J9
J7
J1
J2
J3
THERMISTORS IN
DEHUMIDIFIER
THERMISTOR S (2)
Manifold and Case
NC
NETWORK
CABLE
24 VOLT
POWER CABLE
Figure 2-7. WNX - Wiring Diagram
2-8 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
J
O
J5
J
THERMISTOR ASSY
DETECTOR BLOCK
PRESSRE SENSOR ASSY
0-15 PSIG - SAMPLE
SENSOR ASSY
0-30 PSIG
OZONE SOURCE
CABLE ASSY, ANALOG I/O
CABLE ASSY, DIAGNOSTICS
J2
J3
J4
J2
1
J8
J6
J7
J13
J11
J4
COMPUTER ANALYSIS BOARD
HARNESS, EXPANSION I/O
J5
J9
J1
PHOTODIODE
RESISTOR
J3
J2
J6
HARNESS,
SIGNAL POWER
J3 J11
POWER
SUPPLY
BOARD
J7
Instruction Manual
760009-B
November 2002
NC
EXTERNAL
J5
J1
J2
J12
J11
J6
J13
J1 J2
DRIVER B
J21
ARD
E2
E1
J3
E3
GND
J1
J2
J3
CABLE ASSY, INTERNAL
NETWORK
J9
4
J8
J10
J6
NETWORK
CABLE
EXTERNAL
POWER
CABLE
TRANSISTOR ASSY,
OZONE-SOURCE
PRESSURE
FAN ASSY
FAN ASSY
HEATER/OVER TEMP/FUSE
DETECTOR BLOCK
OZONATOR HEATER
OZONATOR
POWER SUPPLY
HARNESS, DRIVER PWR
HARNESS, DIGITAL I/O
Figure 2-8. WCLD - Wiring Diagram
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-9
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
2-10 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
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SECTION 3
OPERATION
Instruction Manual
760009-B
November 2002
3-1 OVERVIEW
Prior to initial startup, the user should leak test
the fittings on the rear panels of the modules,
as outlined in Section 2.
For the remainder of this section, Analyzer
Module interconnection with a Platform or
some interfacing component will be assumed.
Display and Keypad information shall refer to
that which the user can expect to see and do
with regard to the Front Panel of the Platform.
For a complete description of Platform Front
Panel controls and indicators, see Section 1
of the Platform Components instruction manual.
WNX
7.50
Sample flow: 1300 ml/min 200 1500
Sample press: 4.0 hPa 50.0 490.0
Ozonator: OFF – PRESS. SW.
Converter temp: 30.9 C 150.0 500.0
Displa
Figure 3-1. Measure Mode Display
3-2 DISPLAYS & OPERATING KEYS
The LCD screen shows all measurement values of the analyzer, status values and all user
menu instructions. Operation is performed
with five function keys, four arrow (cursor)
keys and the enter key. The function of each
key varies depending on the installed analyzer
module, any auxiliary modules installed, and
the individual menu displayed.
In case of power failure, all user defined specific module parameters are saved by a battery powered memory.
ppm NO
0.00 Range: 1 10.00
Status… Main… Channel BasicCal
The Function Keys, also called softkeys, are
assigned values depending on the menu or
screen being displayed. The legend is displayed above the keys.
The
Enter Key is used to confirm a previously
Cursor Keys (← or →) are used to move
The
backwards or forwards between the pages of
a menu or to select numeric digits for adjustment.
a. Menu Lines & Softkey Functionality
entered variable value, to start a selected
function or to go to a submenu selected at a
menu line as opposed to the Function Keys.
As an alternate to using the Enter Key to start
a function, the → key can be used.
Menu lines can be selected with the ↑ key
or the ↓ key. The selected line is displayed as white lettering on a black background (highlighted). Menus can contain
four different types of lines:
Cursor Keys (↑ or ↓) are used to move
The
up or down the lines within a menu or to increment and decrement number variables.
Menu Line – A line ending with three dots
(…) indicates that it leads to a submenu.
The submenu can be activated by press-
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-1
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
ing the ↵ key or the → key when the line
is highlighted.
Function Line – A line ending with an
exclamation point (!) indicates that it will
start a function. The function can be activated by pressing the ↵ key or the → key
when the line is highlighted.
Variable Line – A line ending with a colon
(:) indicates that it displays a module variable parameter. Some parameters can be
changed and some parameters display
only a status and cannot be changed. Parameters that cannot be changed will be
displayed below a line within the menu.
Text Line – A line without punctuation
marks only displays information.
Tag Line – At the top of each menu page
is the tag line of the current channel. To
the right of the Tag is the value of the indicated channel.
The Function Keys (Softkeys) can sometimes be assigned as Functions (exclamation point) or Submenus (three dots) as
shown below.
b. Common Function Keys
Display
ponent display to the multi-component
display. F1 in the single component display.
Measure – Change from menus and
submenus to the single component display of the selected channel. F1.
Status – Change to the menu “Current
measurement parameters” which displays
the most important parameters and information about the status of the current
channel or module. F2 if available. (See
Section 3-5a, page 3-9)
– Change from the single com-
component display. (See Section 3-1e,
page 3-4)
HOME – Change for various menus to the
main menu. F1.
Channel – Scrolls through the channels
in the same menu. In the main menu and
the single component display menu it
moves between the channels of the connected analyzers and analyzer modules.
In the submenus it moves only between
the channels of the current analyzer or
analyzer module. F3 if available, F4 in the
single component display.
Lock – Changes to the main menu and
locks all three operation levels, if a security code is enabled in the system configuration (See Section 3-11d, page 3-34).
F4 in the main menu.
BasicCal – Change from the single com-
ponent display to the menu “Basic Controls and Setup.” F5 in the single
component display. (See Section 3-5d,
page 3-9)
MFG Data – Change from the main menu
to the menu “Manufacturing Data” which
displays further submenus with information about the control module and analyzer module, such as address of the
manufacturer, serial number of the modules and software and hardware versions.
F5 in the main menu. (See Section 3-1f,
page 3-4 and Figure 3-6, page 3-5)
More – Changes to an additional menu
page of the current menu. F3 or F5 if
available.
ESCAPE/Back – Returns to the previous
menu. Usually F2 or F4. When changing
a variable, the previous value is displayed
above the Back softkey. Pressing the
Back softkey restores the previous value.
Main – Change from single component
display to the main menu. F3 in the single
3-2 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
INFO – Context sensitive help screens for
the current menu.
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Tag Line
Menu Line
Function Lines
Variable Lines
c. Entering & Changing Variables
1. Select the variable line desired to be
changed using the ↑ key or the ↓
key. The selected line will be highlighted white on black.
2. Press the ↵ key and the parameter
will be selected for modification.
3. The F2 key changes to “Back…”
and the previous value of the variable shows above it for easy reference. When the variable being
changed is numeric, the F4 key
changes to “+/-“ to allow changing of
the sign from positive to negative if
applicable.
CLD 7.50 ppm
-- Main Menu --
Analyzer basic controls (calibration) & setup…
Anal
zer and I/O, expert controls & setup…
stem configuration and diagnostics…
S
controls…
Dis
Time & Date:
stem tag:
S
Measure
Status… Channel Lock… MFG Data
Figure 3-2. The Display Screen
TO2 16.4 ppm
Displayed concentration digits: 6
Digits after decimal point: 2
Module identification tag: TO2
-- Measurement Display Configuration --
Si
nal on mini-bargraph – 1: Electrolyte level
Signal on mini-bargraph – 2: Temp. current
Signal on mini-bargraph – 3: Range
Signal on mini-bargraph – 4: Sensor current
Measure
Figure 3-3. Changing Variables
d. Starting a Function
Pressing the ↵ key or the → key while a
function line is highlighted will bring up a
confirmation menu as shown below.
Selected Line
(Reverse Text)
Lines below this separator
are information and cannot
be chan
Function Keys F1 – F5 Legend
Back…
ed.
1. Use the ↑ key or the ↓ key change
the entire value, scroll among the
Pressing the F2 key will start the function
immediately.
available variables or change the
value of a selected digit or character.
2. Use the ← key or the → key to select
digits within a number. For some
variables the quantity of digits or
characters can be changed.
3. Press the ↵ key again to confirm the
new value.
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-3
Pressing the F4 key will return to the previous menu page.
TO2 16.4 ppm
-- Confirmation Required –
Do you really want to do this ??
Press “Yes” or “Back…”
Back…
Back…
Figure 3-4. Function Confirmation Display
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Model NGA2000 WNX and WCLD
e. Measure Mode Display
The Measure Mode is the normal mode of
operation. In this mode, the Display will
show the current gas measurement, the
component of interest, the current operations of the softkeys, and several graphics. A bar representing the displayed
concentration is shown as a percent of
full-scale and up to four lines showing
user selectable secondary parameters
from either the Analyzer Module or any IO
module bound to it. See the Platform
manual for information as to how to select
these. The Measure Mode display is
shown in Figure 3-1, page 3-1.
If more than one Analyzer Module is connected to the system, an additional Run
Mode display will show as many as four
(five for version 2.3 and later) gas measurements on the display screen.
f. Main Menu
Pressing the F3 key (Main…) or the →
key while in any single component display
will bring up the Main Menu. From the
Main menu it is possible to change all operating values of the analyzer to set up
and control the parameters of measurement, calibration and data transfer. The
sub menus of the Main Menu are shown
in Figure 3-7, on page 3-6
From the Main menu, the F5 key (MFG
Data) will access several submenus
showing the manufacturing and version
data of the analyzer as shown in Figure
3-6, page 3-4.
Selection from the Main menu:
Measure (F1) – Changes to the single
component display of the current channel.
See Section 3-5b, page 3-9.
Status… (F2) – Changes to the “Current
measurement parameters” menu of the
current channel. See Section 3-5a, page
3-9.
Channel (F3) – Scrolls through all chan-
nels of the connected Analyzers and Analyzer modules.
Lock… (F4) – Locks any operating level
by security code. See Section 3-11d,
page 3-34.
MFG Data (F5) – Changes to “Module
Manufacturing Data” menu. See Figure
3-6, page 3-5.
CLD 7.50 ppm
-- Main Menu --
nalyzer basic controls (calibration) & setup…
nalyzer and I/O, expert controls & setup…
stem configuration and diagnostics…
S
Dis
controls…
Time & Date: 10:30:05 August 10 2001
stem tag: Fisher-Rosemount
S
Measure
Status… Channel Lock… MFG Data
Figure 3-5. Main Menu Display
3-4 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
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760009-B
November 2002
CLD 7.50 ppm
Analyzer basic controls (calibration) & setup…
zer and I/O, expert controls & setup…
Anal
S
stem configuration and diagnostics…
Dis
controls…
Time & Date: 10:30:05 August 10 2001
S
stem tag: Fi sher-Rosemount
Measure
-- Main Menu --
Status… Ch annel Lock… MFG Data
CLD 7.50 ppm
Control module manufacturing data…
Anal
-- Module Manufacturin
zer module manufacturing data…
Data --
Measure
Status… Back…<<< >>>
CLD 7.50 ppm
Measure
-- Control Module Manufacturin
(C) 2001 Fisher-Rosemount MFG GmbH & Co OHG
Manufactured by:
Fisher-Rosemount GmbH & Co OHG
Industriestrasse 1
D-63594 Hasselroth / Germany
Tel: (+49) 6055 884-0
FAX: (+49) 6055 884-209
Or… More…
Data --
Back…
CLD 7.50 ppm
More…
Bench confi
-- Anal
zer Module Manufacturing Data --
uration code: CL A – low range
Minimum range: 10.0 ppm
Maximum range: 10000 ppm
Diode s/n, block s/n: 0000, 0000
Capillary: 200.0 ml/min
Flow sensor: Present
HOME
ESCAPE RESET STORE INFO
CLD 7.50 ppm
Hardware revision: ACU02 R 3.3.1.D April 01 2001
Revision date: May 8 2001
Revision time: 15:30:02
Phrase dictionary version: P012/01/00
Language: English
Measure
-- Control Module Version Information --
Serial numbe r: CM1
Manufacturing date: 20 04 01
Software rev ision: 3.6 0 / P010
Back…
CLD 7.50 ppm
Measure
-- Control Module Manufacturin
(C) 2001 Fisher-Rosemount
Manufactured by:
Rosemount Analytical Inc.
4125 East La Palma Avenue
Anaheim, CA 92807-1802 / USA
Tel: (714) 986-7600
FAX: (714) 577-8739
Or… More…
Data --
Back…
CLD 7.50 ppm
Measure
-- Control Module Manufacturin
(C) 2001 Fisher-Rosemount
Manufactured by:
Rosemount Analytical Inc.
4125 East La Palma Avenue
Anaheim, CA 92807-1802 / USA
Tel: (714) 986-7600
FAX: (714) 577-8739
Or… More…
Data --
Back…
CLD 7.50 ppm
Revision date: August 8 2001
Revision time: 03:26:15
-- Anal
zer Module Version Information --
Serial number: CLD1
Manufacturing date: 08 08 01
Hardware revision: 1.0
Software revi sion: 3.6 0 / P012
Measure
Back…
Figure 3-6. Module Manufacturing Data Displays
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-5
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CLD 7.50 ppm
Anal
zer basic controls (calibration) & setup…
zer and I/O, expert controls & setup…
Anal
S
stem configuration and diagnostics…
Dis
controls…
Time & Date: 10:30:05 August 10 2001
S
stem tag: Fisher-Rosemount
Measure
Model NGA2000 WNX and WCLD
-- Main Menu --
Status… Channe l Lock… MFG Data
Figure 3-7. Main Menu Sub Menus
CLD 7.50 ppm
Measurement range number: 1
Range upper lim it: 10.0 ppm
Automatic range change control: Disabled
Ranges with valid calibration: None
Calibration status: READY
Span gas concentration: 10.0 ppm
Status: STANDBY
Measurement mode: NO
Ozonator status: OFF – PRES. SW.
Ozonator
ower: Enabled
HOME
NO/NOx
-- Basic Controls
ZERO INFO
SPAN
CLD 7.50 ppm
-- Anal
Analyzer module controls…
System & network I/O module controls…
Analyzer module setup…
System & network I/O module setup…
(Note: Controls & setup are identical for MLT/TFID)
zer and I/O, Expert Controls and Setup --
Measure
Channel
Back…
CLD 7.50
-- System Configuration and Diagnostics --
System calibration…
Diagnostic menus…
Load/Save configuration (CMMCA)…
Date and time…
Security codes…
Network module management…
System reset…
Pump 1: Off
Pump 2: Off
Measure
Channel
Back…
CLD 7.50 ppm
Brightness: 70%
Contrast: 23%
Switch automatically to “Measure” after: 30 s
Switch off backlight after: Never
-- Dis
Controls --
Measure
Back…
m
3-6 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
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November 2002
3-3 STARTUP & INITIALIZATION
Apply power to the CLD Analyzer Module. If it
is associated with a Platform, do this by plugging in the Platform to a power source. The
Platform has no ON/OFF power button. Once
power has been supplied to the Platform, the
CLD Analyzer Module will be energized.
After switching on the CLD, the analyzer will
begin its booting procedure which is apparent
on the LCD screen. The first part of the initialization procedure is a self check of the
software and analyzer components. Various
displays will show the status of the initialization including revision notes, “Initializing network interface,” “Searching for nodes,”
“Scanning Module 2: CLD, 12% Complete,”
and “Calculating bindings.”
If the user's system contains only one Analyzer Module, all system components, the
Controller Board and the network "self-install"
(bind together) during initial startup. If the system contains more than one Analyzer Module,
the startup sequence will interrogate the network to locate and identify all components on
the network. The user will have to bind appropriate combinations of components after the
startup sequence. See the Platform manual
for instructions on binding combinations of
modules.
Pressing the F1 key during initializing will reset the LCD brightness and contrast to factory
settings (See Section 3-6, page 3-10). Pressing the F3 key will abort the network initializing, aborting any connection to other
analyzers. In that case, only the menus of the
local analyzer will be available.
At the end of the initializing routine the
“measure” screen will display as shown on the
next page. This screen is the access to all
other channels, menus and submenus. The
actual display may differ from that shown depending on any custom configuration as described in Sections 3-7h, page 3-17 and
Section 3-7j, page 3-19.
After the warm-up period (about one hour for
the CLD Analyzer Module), all modules are
completely functional. Establish that correct
ozonator air pressure and sample flow rate
are within specifications (see the Specifications, page 1-6). Calibrate and adjust converter efficiency, and begin routine operation
as the following sections indicate.
(C) 2001 FISHER-ROSEMOUNT Analytical
NGA-2000 Control-Module Rev. 3.6.0 /P010
Language: P012/01/00
Initializing Network
Initializing network interface
LCDReset
Abort
Figure 3-8. Startup Display
a. Startup Procedure
NOTE
Both modules must be functional with
all components at proper operating
temperature before a wet sample is
applied. If not, either or both modules
may be damaged by condensed water.
Either module may be started up independently of the other. This may be helpful during initial startup and familiarization.
This is accomplished by applying 24-volt
power to one module at a time. In this
case, refer only to the instructions below
that apply to the module that is being
started up.
Apply power to the WNX and WCLD
modules. If they are associated with an
enclosure such as a dual analyzer enclosure, do this by plugging in the enclosure
to a power source. The enclosures have
no ON/OFF power button. Once power
has been supplied to the enclosure, both
modules will be energized.
The startup sequence will interrogate the
network to locate and identify all components on the network. The user will have
to bind appropriate combinations of components after the startup sequence The
WNX and CLD modules are automatically
bound to each other.
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-7
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Model NGA2000 WNX and WCLD
During startup, the Display will appear as
in Figure 3-1, except that the blinking
message, "WARMING UP," will appear
above the softkey labels.
Bind any unbound components, calibrate
the system, optimize the converter efficiency, and begin routine operation as following sections indicate.
b. Warm-up of the WNX Module
Select the Power Supply Voltages screen.
The voltages labeled “was” refer to the
values measured during factory checkout.
The voltages labeled “is” refer to the current values, updated at 1 - 10 second intervals by the module computer. Verify
that the “is” values are within 10% of the
corresponding “was” values.
Select the Module Start Up screen. When
the three temperatures that are displayed
become stable, the WNX Module is
warmed up. At that time, the Enclosure
temperature should be between 60°C and
70°C, the Dehumidifier cold-side temperature should be between 3°C and 7°C and
the Converter temperature should be between 300°C and 400°C. The latter temperature is user-selectable, to optimize
converter efficiency as explained in Sections 3.6 and 3.7.
c. Warm-up of the WCLD Module
Within the Technical Configuration Menu,
select the Analyzer Diagnostics Power
Supply Voltages screen. The voltages labeled “was” refer to the values measured
during factory checkout. The voltages labeled “is” refer to the current values, updated at 1 - 10 second intervals by the
module computer. Verify that the “is” values are within 10% of the corresponding
“was” values.
tween -0.5°C and 0.5°C and 51.0°C and
52.0°C, respectively, the WCLD Module is
warmed up.
Establish that ozonator air and sample
pressures are within specifications (see
Specifications in the Preface section of
this manual).
d. Binding
Although the WNX and WCLD Modules
are automatically bound, to achieve full
coordination between the modules and
other related NGA 2000 components
(e.g., I/O Modules), the user must bind
those components using functions in the
System Set Up portion of the Technical
Configuration Menu. (See Figure 3-6.)
Follow the Binding Procedure as outlined
in the I/O Modules manual.
3-4 ROUTINE OPERATION
The CLD Analyzer Module is designed to continuously analyze the sample stream. Normally, it is never powered off except for
servicing or for a prolonged shutdown.
Maximum permissible interval between calibrations depends on the analytical accuracy
required, and therefore cannot be specified.
Initially, the instrument should be calibrated at
least once every eight hours. This practice
should continue until experience indicates that
some other interval is more appropriate.
3-5 BASIC CONTROLS AND STATUS
The following sections describe the basic control of the analyzer and the viewing of channel
parameters. Examples of stepping through the
menus are shown so that the user can become familiar with the operation, keeping in
mind that displays and menu choices may be
different depending on actual analyzer configuration and any customization of the
menus.
Within the Technical Configuration Menu,
select the Analyzer Start Up screen.
When the Sensor temperature and Detector Block temperatures are stable be-
3-8 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
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a. Analyzer Channel Status
The analyzer status is displayed in the
Current measurement parameters display.
To access the Current measurement parameters display:
Main Menu [Measure (F1)]
↓
Measurement Mode [STATUS(F2)]
↓
Current measurement parameters
CLD 7.50 ppm
Analyzer gas measured: NO
Measurement range number: 1
Range change control: Local
Linearization mode: Disabled
Analyzer operational state: STANDBY
Analyzer alarm state: NORMAL
Alarms reported: FAILURE
Current total variable updates per second: 24
HOME
-- Current measurement
ESCAPE MORE INFO
arameters --
From the Current measurement parameters menu an additional sub menu is
available with additional parameters.
Press MORE (F3) to access the next
menu.
CLD 7.50 ppm
Response time: 3.0 s
Bypass flow: 1300 ml/min.
Capillary pressure: 4.0 hPa
Detector pressure: 38.8 c
-- Current measurement
arameters --
HOME
ESCAPE MORE INFO
Press ESCAPE (F2) or MORE (F4) to return to the first menu or HOME (F1) to return to the Main menu display.
b. Single Component Display
The Measure menu that displays after
startup is the Single Component display
of the analyzer. If other analyzer modules
are connected to the Platform, it is possible to display them using the following
steps to change the channel of the single
component display:
From the Measure Mode display, press
Channel (F4) to change to the Single
Component Display of any other installed
Analyzer Modules.
Example:
Changing from CLD (channel 1) to CO
2
(channel 2).
Continue pressing F4 to display the desired channel depending on the installed
analyzer configuration, ultimately returning to the first channel.
CLD
7.50
ppm NO
0.00 Range: 1 10.00
Sample flow: 1300 ml/min 200 1500
Sample press: 4.0 hPa 50.0 490.0
Ozonator: OFF – PRESS. SW.
Converter temp: 30.9 C 150.0 500.0
Displa
Status… Main… Channel BasicCal
MLT/CH1/R2
2.50
0.00 Range: 2 5.00
Temperature: 37.0 C 0.0 100.0
Maintenance Requests: No
ny alarms: No
Operation: Ready
Displa
Status… Main… Channel BasicCal
% CO2
CLD
7.50
0.00 Range: 1 10.00
Sample flow: 1300 ml/min 200 1500
Sample press: 4.0 hPa 50.0 490.0
Ozonator: OFF – PRESS. SW.
Converter temp: 30.9 C 150.0 500.0
Displa
Status… Main… Channel BasicCal
ppm NO
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c. Multi Component Display
If other analyzer modules are connected
to the Platform, it is possible to display up
to five using the following steps to change
from the single component display to the
multi component display as follows:
From the single channel display (Measure) press Display (F1) to change to the
Multi Component Display of all other installed Analyzer Modules.
Changing to the multi component display
can be done from each single component
display.
CLD
7.50
0.00 Range: 1 10. 00
Sample flow: 1300 ml/min 200 1500
Sample press: 4.0 hPa 50.0 490.0
Ozonator: OFF – PRESS. SW.
Converter temp: 30.9 C 150.0 500.0
Displa
Status… Main… Channel BasicCal
7.50
2.50
>
95.00
ppm NO
MLT/CH1
MLT/CH2
ppm CO
Select
Status… Tags Off LCDReset
Each bargraph shows the start and end of
the range for the respective channel. The
number in parentheses indicates the
number of the selected range for that
channel. (F.S. = full scale)
(Display may look different depending on
installed analyzers.)
Use the F3 key (Tags Off) to turn the analyzer tags on or off.
To select a single channel display in the
multi channel display, enable the select
CLD
0.00 [1] 10.00
0.000
% CO2
0.00
ppm NO
5.00
250.00
symbol (>) by pressing the F1 key or the
↓ key.
Then use the ↓ or ↑ key to select the line
for the desired channel. When the desired
channel is marked, select it for single
component display by pressing the F1
key.
MLT/CH1
2.50
0.00 Range: 2 5.00
Temperature: 37.0 C 0.0 100.0
Maintenance-Request No
ny-alarms: No
Operation: Read y
Displa
d. Basic Controls
To access the Basic Controls menu:
Measurement Mode [BasicCal (F5)]
Analyzer basic controls (calibration) &
CLD 7.50 ppm
Measurement range number: 1
Range upper limit: 10.0 ppm
Automatic range change control: Disabled
Ranges with valid calibration: None
Calibration status: READY
Span gas concentrati on: 10.0 ppm
Status: STANDBY
Measurement mode: NO
Ozonator status: OFF – PRES. SW.
Ozonator power: Enabled
HOME
Figure 3-9. Basic Controls Menu
The Basic Controls menu is used to set
the range, initiate and exit a quick start
and exit the sleep mode.
Measurement range number:
To select one of the four ranges of the
CLD analyzer, Move the cursor to the
“Measurement range number:” line and
press the ↵ key. Change the range num-
% CO2
Status… Main… Channel BasicCal
Or
Main Menu
↓
setup…
-- Basic Controls --
NO/NOx
ZERO INFO
SPAN
3-10 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
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Instruction Manual
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ber using the ↑ and ↓ keys and then press
the ↵ key again to save the selection.
See Section 3-7a, page 3-12 to change
the begin and end concentration values
for each of the four ranges.
Automatic range change control:
When enabled, the CLD analyzer module
will change ranges automatically when
the present range is exceeded.
Span gas concentration:
Allows setting of the calibration span gas
concentration. The default is the range
upper limit.
Ozonator Power:
Used to turn off (Disable) the ozonator.
For applications where measurements are
made infrequently but the analyzer is to
remain on to avoid the warm-up period,
the CLD would be placed in Standby
mode and the Ozonator could be Disabled to conserve the life of the lamp and
converter.
ZERO (F3) / SPAN (F4)
To ZERO (F3) or SPAN (F4) the analyzer, flow the appropriate gas, select the
correct range and press the appropriate
softkey. Do a zero before span!
The Display Controls menu is used to adjust
the display parameters.
Brightness and Contrast:
These controls can be adjusted to accommodate the ambient lighting conditions. The
range of values are 20-100% for brightness
and 1-45% for contrast.
These values can be reset to the defaults
from the Multi Channel display screen (Section 3-5c, page 3-9) by pressing LCDReset
(F1) function key and from the Start up display
(Figure 3-8, page 3-7) by pressing LCDReset
(F5).
Switch automatically to “Measure” after:
This variable line allows setting of the delay
time before any selected menu switches back
to the Measure screen. The selectable values
are:
10 sec
30 sec
1 min
5 min
10 min
30 min
Never
Switch off backlight after:
3-6 DISPLAY CONTROLS
This variable line allows setting of the delay
time before switching off the backlight of the
Main Menu
display screen. The selectable values are:
↓
Display control…
CLD 7.50 ppm
Brightness: 70 %
Contrast: 23 %
Switch automatically to “Measure” after: 30 s
Switch off backlight after: Never
Measure
-- Display Controls --
10 sec
30 sec
1 min
5 min
10 min
30 min
Never
Figure 3-10. Display Controls Menu
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-11
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3-7 ANALYZER AND I/O, EXPERT CONTROLS
AND SETUP
Main Menu
↓
Analyzer and I/O expert controls & setup…
CLD 7.50 ppm
-- Anal
Analyzer module controls…
System & network I/O module controls…
Analyzer module setup…
System & network I/O module setup…
(Note: Controls & setup are identical for MLT/TFID)
zer and I/O, Expert Controls and Setup --
Measure
Channel
Back…
Figure 3-11. Analyzer and I/O Expert Controls
and Setup Menu
The Expert Controls and Setup menus provide for the configuration of system and network I/O (SIO & DIO), and for the
configuration of various functions on the
WCLD analyzer module.
NOTE
Whenever the “Channel” tag appears
above the F3 key, pressing F3 will switch
to any other installed analyzer modules,
one after the other and eventually back to
the CLD module. When activating any
other installed module, the menus will be
different depending on that module. See
each module’s manual for a description of
those menus.
CLD 7.50 ppm
-- Ex
ert Controls --
Measurement range number: 1
Range upper limit: 10.0 ppm
Range settings…
Range and functional control: Local
Measurement mode: NO
Ozonator status: OFF – PRES. SW.
Ozonator power: Enabled
Zero/Span calibration…
Ranges with valid calibration: None
Physical measurements…
HOME
CAL
NO/NOx
Figure 3-12. Expert Controls Menu
Measurement range number:
To select one of the four ranges of the CLD
analyzer, Move the cursor to the “Range
number:” line and press the ↵ key. Change
the range number using the ↑ and ↓ keys and
then press the ↵ key again to save the selection.
Range and functional control:
Local = Range control by the menus
Inputs I/O module = Range control by remote
communication
Program I/O module = Range control by the
I/O module
INFOESCAPE
In the “Analyzer and I/O expert controls and
setup” menu, select “Analyzer module control…” .
The “Expert Controls” menu will display as
shown.
NOTE
Zero/Span calibration… is described in
Section 3-8c, page 3-22.
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a. Range Settings
Used to change the upper and lower limit
for each of the four ranges. select Range
settings… from the Expert Controls menu.
Analyzer and I/O expert controls &
Analyzer module controls…
CLD 7.50 ppm
Minimum range: 10.0 ppm
Maximum range: 10000 ppm
Range 1 lower limit: 0.0 ppm
Range 1 upper limit: 10.0 ppm
Range 2 lower limit: 0.0 ppm
Range 2 upper limit: 25.0 ppm
Range 3 lower limit: 0.0 ppm
Range 3 upper limit: 100.0 ppm
Range 4 lower limit: 0.0 ppm
Range 4 upper limit: 250.0 ppm
HOME
Figure 3-13. Range Settings Menu
To change any of the limits, move the
cursor to the desired line and press the ↵
key. Change the limit value using the ↑
and ↓ keys and then press the ↵ key
again to save the selection.
Press the ESCAPE (F2) softkey before
pressing the ↵ key to restore the previous
value.
The Range Settings menu is also accessible from the Gas Measurement Parameters as follows:
Analyzer and I/O expert controls &
Gas measurement parameters…
Main Menu
↓
setup…
↓
↓
Range settings…
e Settings --
-- Ran
ESCAPE
Main Menu
↓
setup…
↓
Analyzer module setup…
↓
↓
Range settings…
INFO
The Analyzer Module will not allow the
user to increase the upper limit of a range
beyond the maximum range software setting. To change the Maximum Range
value, select “Range x upper limit”, and
use the arrow keys to scroll the indicated
value. The same applies for the “Range x
lower limit” value.
b. Physical Measurements
Use the Physical Measurements menu to
view various conditions of the WCLD
module and to adjust the bypass flow limits.
Main Menu
Analyzer and I/O expert controls &
Analyzer module controls…
Physical measurements…
CLD 7.50 ppm
Bypass sample flow: 1300 ml/min
Flow lower limit: 200 ml/min
Flow upper limit: 1500 ml/min
Sample pressure: 3.4 hPa
Ozone supply pressure: 2.7 hPa
Sensor block temperature: 29.6 C
-- Ph
HOME
Figure 3-14. Physical Measurements Menu
The bypass flow path is used to increase
the response time of the detector. Upper
and lower limits can be set to trigger a
diagnostic alarm.
To change any of the limits, move the
cursor to the desired line and press the ↵
key. Change the limit value using the ↑
and ↓ keys and then press the ↵ key
again to save the selection.
Press the Back (F2) softkey before pressing the ↵ key to restore the previous
value.
The normal value for bypass flow is 600
cc/min.
↓
setup…
↓
↓
sical Measurements --
NO/NOx
INFOESCAPE
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c. Concentration Alarms
Use the Concentration Alarm Setup menu
to establish or change the alarms for the
sample gas concentration measurement.
(Calibration parameters are described in
Section 3-8a on 3-20)
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Concentration alarms…
CLD 7.50 ppm
Alarm generation is: On
Level for Low-Low alarm: 0.000
Level for Low alarm: 0 .000
Level for High alarm: 9.000
Level for High-High alarm: 10.000
Alarm delay: 1.0 s
Low-Low alarm: On
Low alarm: On
High alarm: On
High-High alarm: On
HOME
-- Concentration Alarm Setu
ESCAPE
ACKN
--
Figure 3-15. Concentration Alarm Setup Menu
To change the alarm limits, move the cursor to the desired line and press the ↵
key. Change the limit value using the ↑
and ↓ keys and then press the ↵ key
again to save the selection.
Press the Back (F2) softkey before pressing the ↵ key to restore the previous
value.
Alarm delay:
Set the alarm delay for the desired time
delay after the concentration value exceeds the limit before the alarm is activated.
Alarm generation is:
This setting establishes the generation of
alarms as “Off,” “On,” or “On (Hold
Alarm).” The “On (Hold Alarm)” setting
provides that the alarm will remain active
even after the gas concentration returns
below the appropriate level until the
ACKN softkey is pressed or it is reset
from the remote I/O.
ACKN
Press the F3 softkey to acknowledge and
reset any alarm.
d. Linearization Parameters
Linearization parameters allows the establishment of linearizer coefficients and
the assignment of coefficient sets to individual ranges.
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Gas measurement parameters…
↓
Linearization parameters…
CLD 7.50 ppm
Range 1 linearizer: Disabled
If enabled, uses curve no.: 1
Range 2 linearizer: Disabled
If enabled, uses curve no.: 2
Range 3 linearizer: Disabled
If enabled, uses curve no.: 3
Range 4 linearizer: Disabled
If enabled, uses curve no.: 4
Set coefficients…
HOME
-- Linearization Parameters --
ESCAPE
Figure 3-16. Linearization Parameters Menu
The linear polynomials act over a range
(not the same as the measurement
range). The system uses the linearizer
polynomial appropriate for the measurement range chosen. This is the polynomial with the next higher range. It is,
however, possible to specify that the analyzer use a wider range polynomial.
Note that the use of different polynomials
on different ranges will give different readings on a new range.
INFO
3-14 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
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Coefficients may be edited for custom
curves.
CLD 7.50 ppm
A0 coefficient: 0.000000
A1 coefficient: 1.000000
A2 coefficient: 0.000000
A3 coefficient: 0.000000
A4 coefficient: 0.000000
Curve upper limit: 10.0 ppm
Curve over-range: 5.0 %
Curve under-range: 5.0 %
Status: Disabled
HOME
Linearity coefficients
ESCAPE
Curve 1
NEXT LAST
Figure 3-17. Linearity Coefficients Menu
Edit the polynomial coefficients as desired. Make sure that the curve upper limit
is correct. This is the limit of the range
that this polynomial will support.
The last line (Status) selects whether the
curve is in use. Use the NEXT (F3),
LAST (F4), and BACK (F4) softkeys to
access all four curves.
e. Linearization Functions
The linearization functions allow the primary variable output to be linearized by
either a polynomial of up to 20 set points,
or by midpoint piecewise correction with
up to three midpoints.
INFO
Polynomial Set Up
Use the polynomial set up to generate a
linearizing polynomial from up to 20
gases. With more than 6 gases, it will
produce a fourth order polynomial linearizer.
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Gas measurement parameters…
↓
Linearization functions…
↓
Polynomial set up…
CLD 7.50 ppm
Range to be li nearized: 1
Current span gas: 10.0 ppm
Calculated polynomial order: 4
Gas value show n is: ppm
Gas concentrations…
Analyzer function: READY
HOME
ESCAPE
-- Pol
nomial Setup --
CALC
INFO
Main Menu
↓
Analyzer and I/O expert controls &
Figure 3-19. Polynomial Setup Menu
Setup:
setup…
↓
Select the range to linearize.
Analyzer module setup…
↓
Gas measurement parameters…
↓
Linearization functions…
CLD 7.50 ppm
Polynomial setup…
Midpoint correction setup…
Use the polynomial setup to generate a linearizing
polynomial from up to 20 gases. With more than 6 gases
it will produce a fourth order polynomial linearizer.
Use the midpoint correction for a piecewise-linear final
correction, to bring up to three points precisely onto
the curve.
HOME
-- Linearization Functions --
ESCAPE
INFO
Make sure that the span gas value is correct and set into the “Correct span gas”
line.
Choose whether to define the gas concentrations as absolute values (ppm) or
as a percent of the span gas (Percent of
span gas) in the “Gas values shown as”
line.
Percent would be used if the span gas is
being diluted with a mixing device.
Figure 3-18. Linearization Functions Menu
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From the “Polynomial set up” menu
(Figure 3-19, page 3-14) select the “Gas
concentrations…” submenu to enter up to
20 points for each range.
CLD 7.50 ppm
Gas value: 1.00
Raw reading: 0. 9 ppm
Linearized value: 1.0 ppm
Gas value: 2.00
Raw reading: 1. 9 ppm
Linearized value: 2.0 ppm
Point to be measured: Point 1
zer function: READY
Anal
HOME
ESCAPE
Gas concentrations
Point 1
Point 2
DATA
Figure 3-20. Gas Concentrations Menu
In the “Gas concentrations” menu, enter
the gas value for the desired point as ppm
or percent of scan range in accordance
with the previous choice made for the
“Gas values shown as.”
Choose the point to be measured from
the “Point to be measured” line.
At each point in succession, flow the gas
of the correct value and, when the reading
is stable, press the DATA (F3) softkey to
record the gas value and raw reading for
each point.
Move to the next two points with the
NEXT (F4) softkey and move backwards
with the ESCAPE (F2) softkey. After the
desired number of points has been measured and recorded, press ESCAPE from
the Point 1 menu to return to the “Polynomial set up” menu.
In the “Polynomial set up” menu, press
the “CALC” softkey.
The analyzer will calculate the best fit
polynomial and store it as the coefficients
in the current range’s linearizer function.
The order or the polynomial is optimized
based on the number of data points provided. At least 7 points are required for a
fourth-order polynomial correction. The
results can be modified with the “Midpoint
correction” also provided. See Section 37e, page 3-14.
NEXT
INFO
CAUTION.
The linearization curve must be monotonic. If it is not, the calibration routine
will fail and the analyzer will not calibrate. Test this by copying the values
of the linearization coefficients into a
spreadsheet program and plotting the
results.
The analyzer does not test for monotonicity when it spans, but this test may not
catch all possible errors.
Monotonic means that the curve does not
change direction as the gas concentration
increases.
Midpoint Correction Set Up
This function allows the adjustment of the
primary variable output into a precise
value using up to three midpoints. It does
this with a piecewise-linear algorithm that
occurs after and in addition to any polynomial linearization. .
The correction can be performed individually for each range.
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Gas measurement parameters…
↓
Linearization functions…
↓
Midpoint correction set up…
CLD 7.50 ppm
Correction: DISABLED
Point being mesured: Point 1
Point 1 gas concentration: 2.50 ppm
Point 2 gs concentration: 5.00 ppm
Point 3 gas concentration: 7.50 ppm
Point 1 reading: 2.52 ppm
Point 2 reading: 5.12 ppm
Point 3 reading: 7.56 ppm
Span gas value: 10.00 ppm
nalyzer function: READY
HOME
Midpoint correction setup
Point 1
ESCAPE
SET
RANGE 2
Figure 3-21. Midpoint Correction Setup Menu
INFO
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Instruction Manual
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November 2002
First, disable the correction.
Set the point being measured to Point 1.
Then enter the first midpoint gas value,
run the gas, and when stable, press
“SET.” “Point 1 reading” will show the actual reading, but the analyzer will adjust it
to the correct value.
Repeat the above steps with the second
and third points as desired.
When complete, se the “Correction:” line
to “ENABLED” to activate the correction.
CAUTION.
Make sure that the corrections are not
excessive. If the correction is too excessive, the calibration routine will fail
and calibration of the analyzer will not
be possible.
f. Response Time
The response time menus allows the setting of the primary analyzer variable t90
times, the LON update rate and the output
delay time.
The t90 time adjusts the filtering or damping factor for the concentration outputs for
each range. They are adjustable from 0.1
to 30 seconds with a default of 3.0 seconds.
The
LON Update Rate is the rate at
which the analyzer communicates over
the system network. It is adjustable to
“ASAP” (the fastest rate that the network
communicates), “10 per sec,” and “1 per
sec.”
The
Output Delay Time establishes the
delay for the DIO and analog outputs to
respond to a change in concentration
value. It is adjustable from 0.0 to 30.0
seconds.
To change a value, move the cursor to
the desired line and press the ↵ key.
Change the value using the ↑ and ↓ keys
and then press the ↵ key again to save
the selection. Press the Back (F2) softkey
before pressing the ↵ key to restore the
previous value.
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Gas measurement parameters…
↓
Response time/delay parameters…
CLD 7.50 ppm
Range 1 t90 ti me: 3.0 s
Range 2 t90 ti me: 3.0 s
Range 3 t90 ti me: 3.0 s
Range 4 t90 ti me: 3.0 s
Response time/delay Parameters
LON update time: 10 per sec
Output delay time: 0.0 s
HOME
ESCAPE
Figure 3-22. Response time/delay Parameters
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-17
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g. Automatic Range Change
This menu function allows the setting and
enabling of the automatic range change
for each of the four ranges. The automatic
range switching for increasing values is
effective at the upper range limit of each
range, while for decreasing values it is the
next lower range limit times the hysteresis
percent times the upper range limit.
Main Menu
Analyzer and I/O expert controls &
setup…
Analyzer module setup…
Gas measurement parameters…
Automatic range change parameters…
CLD 7.50 ppm
Actual switch levels…
Switch level hysteresis: 20 %
Usage of range –1: Enabled
Usage of range –2: Enabled
Usage of range –3: Enabled
Usage of range –4: Enabled
Automatic range change control: Enabled
Absolute range upper limit: 10000 ppm
Absolute range lower limit: 10.0 ppm
Measure
-- Automatic Ran
Figure 3-23. Automatic Range Control Menu
Set the desired hysteresis level in the
range of 10% to 50% which is applied to
each range transition. (20% is the default
setting.) Enable the desired ranges and
enable the automatic range change control. To view the actual switching levels,
select the submenu “Actual switch levels…”.
CLD 7.50 ppm
-- Actual Switch Levels --
Range – 1 up: 10.0 ppm
Range – 1 down: -1000000 ppm
Range – 2 up: 25.0 ppm
Range – 2 down: 9.0 ppm
Range – 3 up: 100.0 ppm
Range – 3 down: 22.5 ppm
Range – 4 up: 250.0 ppm
Range – 4 down: 90.0 ppm
Measure
Figure 3-24. Actual Switch Levels Menu
↓
↓
↓
↓
e Control --
Back…
Back…
h. Display Units
This menu function is used to set the displayed units for the various parameters.
This only affects the displayed values. All
outputs are in the basic SI units which, for
example, for pressure is hPa. Gas concentration values are for all ranges. Individual ranges cannot be set to different
units.
Analyzer and I/O expert controls &
Gas measurement parameters…
CLD 7.50 ppm
Gas measurement units: ppm
Pressure measurement units: hPa
Temperature measurement units: C
Ppm to mg/Nm3 conversion factor: 1.000
Lower explosion limit (LEL): 0.00 %
Upper explosion limit (UEL) 0.00 %
Variable are still sent as the basic SI unit.
HOME
Figure 3-25. Display Units Menu
Select the desired parameter and change
the units as follows:
Gas measurement units: ppm, %, ppb, mg/Nm3
Pressure measurement units: hPa, psig
Temperature measurement units: C, F
ppm to mg/Nm3 conversion factor:
The ppm to mg/Nm
the range of 1 to 100000 according to the
formula:
mg/Nm3 =
Main Menu
↓
setup…
↓
Analyzer module setup…
↓
↓
Units…
-- Units --
3
conversion factor in
Molecular weight
INFOESCAPE
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MW
NO 30.0
NO
46.0
2
CO 28.0
SO
O
64.1
2
32.0
2
Lower explosion limit (LEL) and upper explosion limit (UEL):
These parameters are used for the PMD,
FID2 and NDIR modules and do not apply
to the CLD. They should both be set at
0.00%.
i. Physical Measurements & Pressure
Limits
This menu is used to display the physical
diagnostic parameters of the CLD analyzer and to set the various pressure limits.
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Physical measurements parameters…
CLD 7.50 ppm
Sample capillary pressure: 7 hPa
Ozone supply pressure: 15.0 hPa
Ozonator status: On
Ozonator power: Enabled
Bypass flow: 450 ml/min
Converter temperature: 300.0 C
Ozonator temperature: 58.0 C
Sensor temperature: 50.0 C
Block temperature: 51.5 C
Capillary flow rate: 200.0 ml/min
Pressure limits…
HOME
sical Measurements --
-- Ph
ESCAPE MORE HISTORY
Figure 3-26. Physical Measurements
Menu
In the Physical measurements display,
the normal values for the displayed values
are:
Sample capillary pressure: 7 psig
Ozone supply pressure: 15 psig
Ozonator status: On
Ozonator power: Enabled
INFO
Bypass flow: 600 cc/min
Converter temperature: 300 °C
Ozonator temperature: 58 °C
Sensor temperature: 0.5 °C
Block temperature: 51.5 °C
Capillary flow rate: 200 cc/min
From the “Physical Measurements” menu,
select “Pressure limits…” submenu to
view and set the alarm pressure limits for
the sample capillary and the ozonator.
CLD 7.50 ppm
Sample capillary upper limit: 490.0 hPa
Sample capillary lower limit: 50.0 hPa
Ozone supply upper limit: 1050 hPa
Ozone supply lower limit: 700.0 hPa
-- Pressure Limits --
Barometric pressure: 1013 hPa
HOME
ESCAPE
INFO
Figure 3-27. Pressure Limits Menu
The nominal values are:
Capillary upper limit: 7.1 psig
Capillary lower limit: 0.7 psig
Ozone upper limit: 15.2 psig
Ozone lower limit:: 10.2 psig
In the “Physical Measurements” menu,
the “MORE” (F3) softkey displays the
submenu selection for Temperature limits
as shown on the next page. The “HISTORY” (F4) softkey displays the values
for pressure and temperature as originally
set at the factory.
CLD 7.50 ppm
Converter upper limit: 500.0 C
Converter lower limit: 150.0 C
Ozonator upper limit: 65.0 C
Ozonator lower limit: 40.0 C
Sensor upper limit: 55 C
Sensor lower limit : 45 C
Block upper limit: 55.0 C
Block lower limit: 45.0 C
-- Temperature Limits --
HOME
ESCAPE
INFO
Figure 3-28. Temperature Limits Menu
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Model NGA2000 WNX and WCLD
CLD 7.50 ppm
Sample capillary pressure: 7.0 hPa
Ozone supply pressure: 15.0 hPa
Converter temperature: 300.0 C
Sensor temperature: 50.0 C
Block temperature: 51.5 C
Physical Measurements
Manufacturer’s settings
HOME
ESCAPE
Figure 3-29. Physical Measurements –
Manufacturer’s settings Display
j. Single Component Display Parameters
This function and menu is used to establish the parameters to be displayed on the
single component display.
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Physical measurements parameters…
CLD 7.50 ppm
First line’s parameter: Sample flow
Second line’s parameter: Sample press
Third line’s parameter: Ozonator
Fourth line’s parameter Converter temp
Displayed concentration digits: 6
Digits after decimal point: 2
-- Dis
ed Parameters --
HOME
Figure 3-30. Displayed Parameters
Menu
Here you can change the parameters that
are displayed in the Single Component
Display.
It is also possible to set the concentration
value precision and number of digits. This
does not change the inherent precision of
the analyzer.
INFO
INFOESCAPE
Select a line and press the ↵ key. To
change the value use the ↑ and ↓ keys.
The values will scroll through the allowable selections as follows:
Sample flow
Displays the sample flow rate in ml/min
with a bargraph.
Sample press
Displays the sample pressure with a bargraph.
Ozonator
Displays the status of the Ozonator: ON,
Disabled, OFF-PRES.SW.
Converter temp
Displays the converter temperature with a
bargraph.
Block temp
Displays the detector block temperature
with a bargraph.
Detector temp
Displays the photodiode detector temperature with a bargraph.
NO/NOx
Displays the current mode, NO or NOx
Noise level
Displays the concentration noise level in
ppm in the range 0.0 to 0.1 with a bargraph.
t90 time
Displays the t90 response time for the
displayed range with a bargraph.
Output delay time
Displays the output delay time setting with
a bargraph.
Calibration status
Displays the calibration status: READY,
Calibration
Linearizer
________________
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Instruction Manual
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November 2002
Measurement mode
________________
Operational state
Standby, Calibration, Ready
Health
________________
Interference
Off, On
Validity
Validity of the concentration measurement: Valid, Invalid (Goes to Valid after a
successful calibration)
Raw signal
Displays the raw concentration output of
the detector before any linearization or
other correction.
3-8 CALIBRATION PROCEDURE
The CLD analyzer module may require periodic calibration with known zero and span
gases in order to maintain a desire level of
analytical accuracy. It is recommended, after
initial startup, that the CLD Analyzer Module is
calibrated at least once every eight hours.
This practice should continue until evidence
indicates that some other interval is more appropriate depending on the analytical accuracy required.
Calibration is the process of flowing known
zero or span calibration gas into the analyzer
for a specified period (averaging time), after
which the analyzer will automatically set its
zero or span factors so that the concentration
measurement equals the calibration gas
value. A limit can be set, beyond which any
attempt by the analyzer to reset its concentration measurement will cause a warning alarm.
In this case, user intervention would be required to reset the alarm and attempt another
calibration.
Basic Controls calibration:
8b, page 3-22)
This method allows the user to input a span
calibration gas value and perform a zero or
span calibration for each of the four ranges.
This method uses calibration parameters established in the module setup menus. (See
Section 3-8a, page 3-20)
Expert Controls calibration
3-8c, page 3-22)
This method allows the user to perform a zero
or span calibration for each of the four ranges,
enable or disable the calibration adjustment
limits, view the results, and view or change
the Factors that the analyzer uses to adjust
the zero and span concentration reading. This
method uses calibration parameters established in the module setup menus. (See Section 3-8a, page 3-20)
System calibration and setup:
This method allows the user to establish complex automated calibration sequences for
modules bound to the Platform. This is fully
described in the Platform manual.
NOTE
If zero calibration is done with other than a
true zero gas followed by a span calibration, it may be necessary to repeat the
calibration. This is due to the
slope/intercept effect where the subsequent span calibration may change the
zero crossing point.
a. Calibration Setup
Calibration Gas List
This menu is used to set the concentration values of the calibration gases for
each range. These values are used for all
calibrations except in Basic where the
span gas can be entered for a quick manual calibration.
(See Section 3-
: (See Section
There are three methods for performing a
calibration with the CLD Analyzer Module and
NGA Platform:
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Model NGA2000 WNX and WCLD
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Calibration gas list…
CLD 7.50 ppm
Zero gas – range 1: 0.00 ppm
NO span gas – range 1: 10.00 ppm
NOx span gas – range 1: 10.00 ppm
Zero gas – range 2: 0.00 ppm
NO span gas – range 2: 10.00 ppm
NOx span gas – range 2: 10.00 ppm
Calibration…
HOME
-- Calibration Gas List --
MORE
INFOESCAPE
Figure 3-31. Calibration Gas List Menu
Use the MORE (F3) softkey to display
and change the values for the remaining
ranges.
The “Calibration…” submenu provides
quick access to the Expert Controls Calibration menu, Section 3-8c, page 3-22.
Calibration adjustment limits:
Set to “Disable” to recover from a calibration failure.
Calibration averaging time:
Sets the time used by the analyzer to av-
erage its reading during calibration. A
longer time will give a better calibration.
Calibration failure alarm:
When turned on (Yes), issues a warning if
the analyzer has to change its calibration
by more than the Cal Failure Error, if
warning alarms are enabled.
Cal failure error allowed:
The percentage by which the calibration
can change before an alarm is triggered if
the Calibration Failure Alarm is enabled.
Calibration time out:
Sets how long the analyzer will wait for
the signal to stabilize before issuing a
Warning.
Calibration Parameters
This menu provides various parameter
settings for all calibration performed from
Basic or Expert modes.
Zero (Span) ranges:
Used to select whether to calibrate ranges
TOGETHER or SEPARATELY. If together, zeroing or spanning will go
through each range one by one. If the
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Calibration parameters…
CLD 7.50 ppm
Calibration adjustment limits: Enabled
Calibration averaging time: 5 s
Calibration failure alarm: No
Cal failure error allowed: 50 %
Calibration time out: 60 s
Zero ranges: TOGETHER
Span ranges: SEPARATELY
HOME
-- Calibration Parameters --
INFOESCAPE
change required is too great, it will fail and
send an alarm if warning alarms are enabled. In this case, Disable Calibration
Adjustment Limits and try again. First
check that the calibration gases are correct. If non-zero gases are used, or the
changes are great, zero and span may
have to be repeated a few times.
Figure 3-32. Calibration Parameters
Display
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b. Basic Controls Calibration
This method allows the user to input a
span calibration gas value and perform a
zero or span calibration for each of the
four ranges.
Main Menu
Analyzer basic controls (calibration) &
setup…
CLD 7.50 ppm
Measurement range number: 1
Range upper limit: 10.0 ppm
Automatic range change control: Disabled
Ranges with valid calibration: None
Calibration status: READY
Span gas concentration: 10.0 ppm
Status: STANDBY
Measurement mode: NO
Ozonator status: OFF – PRES. SW.
Ozonator power: Enabled
HOME
CLD 7.50 ppm
Are you sure?
You must have zero gas flowing through the analyzer.
-- Basic Controls --
NO/NOx
-- Anal
Calibration time: 0 s
Measurement range number: 1
Zero ranges: TOGETHER
Calibration status: READY
Error message for last zero: CAL OK
HOME
Figure 3-33. Analyzer Zero Display
In the “Basic Controls” menu, move the
cursor to the “Span gas concentration:”
line and set the correct value for the calibration span gas. The zero gas is assumed to be 0.00 ppm.
Begin flowing the calibration gas (zero or
span) and allow time for the analyzer to
stabilize on the gas.
Press the appropriate ZERO (F3) or
SPAN (F4) softkey to display the calibration menu as shown below.
The “Calibration status” must be READY
in order to initiate a calibration.
Verify that the desired measurement
range is active. If not, press ESCAPE (F2)
↓
zer Zero --
ZERO
to return to the previous menu and
change the range.
The “Zero (Span) ranges” tag indicates if
the ranges will be calibrated together or
separately. See Section 3-8a, page 3-20
to change this.
The “Calibration time” begins to count after the calibration is started to show the
elapsed time.
Press the ZERO (F3) [SPAN (F4)] softkey
to begin the calibration. The “Calibration
status” will display ZEROING-WAIT and
the “Calibration time” clock will count the
seconds. After the signal has stabilized
the calibration will finish. If the signal does
not stabilize within the timeout period
(See Section 3-8a, page 3-20), the cali-
INFOSPANZERO
bration will fail and another attempt will be
started automatically. Make sure that the
proper calibration gas is flowing.
c. Expert Controls Calibration
This method allows the user to perform a
zero or span calibration for each of the
four ranges, enable or disable the calibra-
INFOESCAPE
tion adjustment limits, view the results,
and view or change the Factors that the
analyzer uses to adjust the zero and span
concentration reading.
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module controls…
CLD 7.50 ppm
Measurement range number: 1
Range upper limit: 10.0 ppm
Range settings…
Range and functional control: Local
Measurement mode: NO
Ozonator status: OFF – PRES. SW.
Ozonator power: Enabled
Zero/Span calibration…
Ranges with valid calibration: None
sical measurements…
Ph
HOME
ESCAPE INFONO/NOxCAL
-- Ex
ert Controls --
Figure 3-34. Expert Controls Menu
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In the “Expert Controls” menu, set the desired measurement range number to be
calibrated. Change the measurement
mode using the “NO/NOx toggle!” control.
The “Calibration status” will display ZEROING-WAIT and the “Calibration time”
clock will count the seconds. After the
signal has stabilized the calibration will
finish. If the signal does not stabilize
Select “Zero/Span calibration…” menu
line.
within the timeout period (See Section 3-
8a, page 3-20), the calibration will fail and
another attempt will be started automati-
CLD 7.50 ppm
Measurement range number: 1
Zero gas concentration: 0.0 ppm
Span gas concentration: 10.0 ppm
Sample flow: 1300 ml/min
Raw measurement signal: 5216063.5
Measurement gas: NO
NO/NOx toggle!
Status: READY
Result…
Calibration ad
HOME
-- Zero/s
an calibration --
ustment limits: Enabled
FACTORS INFOSPANZERO
Figure 3-35. Zero/Span Calibration
Menu
The zero and span gas concentrations
(set in the calibration gas values menu)
are displayed. See Section 3-8a, page 320 to change the values.
The sample flow rate is displayed along
with the raw measurement signal. The
sample flow rate should be in the range of
200 – 2200 ml/min.
The raw measurement signal can be used
to set the FACTORS described in Section
3-8c, page 3-22.
The “Measurement gas:” tag shows the
current measurement status as NO or
NOx.
Press the ZERO (F3) [SPAN (F4)] softkey
to begin the calibration.
CLD 7.50 ppm
Are you sure?
You must have zero gas flowing through the analyzer.
Calibration time: 0 s
Measurement range number: 1
Zero ranges TOGETHER
Calibration status: READY
Error message for last zero: CAL OK
HOME
-- Analyzer Zero --
ESCAPE INFOZERO
cally. Make sure that the proper calibra-
tion gas is flowing. See Section 3-8a,
page 3-20 for “Calibration adjustment lim-
its.”
Calibration Results
The last calibration results can be viewed
by selecting the “Result…” submenu from
the “Zero/span calibration” menu (Figure
3-35, page 3-23). The “Zero/span diag-
nostic data” screen will be displayed.
CLD 7.50 ppm
Date of last zero: Apr 28, 2001
Error message for last zero: CAL OK
Error percentage for last zero: -5
Raw signal at last zero: 0
Last zero gas would read: 0.000 ppm
Date of last span: Arp 28, 2001
Error message for last span: CAL OK
Error percentage for last span: 25
Calibration status: 789542.0
The last span would read: 10.000 ppm
HOME
-- Zero/span diagnostic data --
ESCAPE INFOFACTORS
Figure 3-37. Zero/Span Diagnostic
Data Menu
The errors are expressed as a percentage
of the range.
The last zero and span readings are how
the analyzer would read on those gases
with the current calibration results or fac-
tors.
Calibration Factors
Calibration Factors can be used to manu-
ally set a calibration by flowing calibration
gas and setting the Factor for zero or
span until the reading conforms to the
calibration gas value. In this way, the user
can force the analyzer to any desired
reading. Alternately, the Factors can be
viewed and recorded after an automatic
calibration.
Figure 3-36. Analyzer Zero Menu
3-24 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
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Instruction Manual
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November 2002
NOTE
If zero calibration is done with other
than a true zero gas followed by a span
calibration, it may be necessary to repeat the calibration. This is due to the
slope/intercept effect where the subsequent span calibration may change
the zero crossing point.
In the “Zero/span Calibration” menu
(Figure 3-35, page 3-23), verify the
“Measurement range number:” is set to
the desired range. If not, move the cursor
to the “Measurement range number:” line
and change the setting. Press the
FACTORS (F2) softkey. The “Calibration
Factors” menu is displayed.
CLD 7.50 ppm
Zero offset: 0.000000
Span factor: 0.000000
Zero offset: 524287.0
Span factor: 0.00021250
Range 1 Factors
Manufacturer’s settings
Stored settings
tration reading is stabilized on the desired
calibration gas value.
The factors take effect after pressing the
↵ key. With zero gas, the zero factor
should be the same as the raw reading.
When the correct zero and span calibra-
tion is achieved, press the STORE (F2)
softkey to save the factors.
Use the “Measurement range number”
line to change the range and the NEXT
(F3) button to display the factors for the
next range.
CLD 7.50 ppm
Only those factors appropriate for the current range
Will affect the reading on the cu rrent range.
Make sure you are using the right ones!
Measurement range number: 1
Range 1 factors…
Range 2 factors…
Range 3 factors…
Range 4 factors…
HOME
-- Calibration Factors --
ESCAPE INFO
HOME
NEXT INFORSTRMN RSTRST
Figure 3-38. Calibration Factors Menu
Move the cursor to the “Range _ factors…” line corresponding to the selected
range and press ↵. The “Range _ Fac-
Figure 3-40. Range Factors Display
Press the HISTORY (F4) button to view
the current stored factors versus the
manufacturer’s (factory) settings. Use the
RSTR MN (F3) softkey to restore the
manufacturer’s settings and the RSTR ST
(F4) button to restore the stored settings.
tors” menu will display.
d. Unable to Calibrate
CLD 7.50 ppm
Zero offset: 524287.0
Span factor: 0.000021250
Full scale range at calibration: 250.0 PPM
Measurement range number: 1
Raw measurement signal: 522819.7
HOME
Figure 3-39. Range Factors Menu
Flow the appropriate gas (zero/span)
while adjusting the corresponding factor
(Zero offset/Span factor) until the concen-
-- Range 1 Factors --
STORE INFONEXT HISTORY
If the user is unable to calibrate the Ana-
lyzer Module (i.e., when ZERO or SPAN
is initiated, nothing happens), a possible
solution relates to the use of an incorrect
gas for zeroing or spanning (e.g., using a
high concentration gas to zero or a zero
gas to span the Analyzer Module). Simply
recalibrating with the appropriate gas(es)
will not correct the problem because the
ZERO OFFSET or SPAN FACTOR has
been set to an extreme value in the proc-
ess.
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-25
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To remedy the problem, do the following:
1. Select the following from the Main
Menu: “Analyzer and I/O Expert
Controls & Setup,” “Analyzer Module Set Up,” and “Calibration Parameters...”
2. Using the ↓ arrow, select “Zero
Ranges:”, press ENTER and, using
the up/down arrows, toggle to
SEPARATE. Do the same for the
“Span Ranges:” selection. Do not
press ESCAPE at any time unless
retention of prior settings is desired.
3. Return to the “Main Menu” and
make the following selections: “Analyzer and I/O Expert Controls &
Setup,” “Analyzer Module Controls,”
“Zero/Span Calibration,” FACTORS
(F3) softkey, and Range 1 (2, 3, 4)
Factors (do Steps 4 and 5 for each
range).
4. Select “Zero Offset,” press ENTER,
adjust the value to 32700 with the ↑
and ↓ arrow keys, and press ENTER. Do not press ESCAPE at any
time unless retention of prior settings is desired.
5. Select “Span Factor,” press ENTER,
adjust the value to 0.00015 with the
↑ and ↓ arrow keys, and press ENTER. Do not press ESCAPE unless
retention of prior settings is desired.
Main Menu
↓
Analyzer and I/O, expert controls &
setup…
↓
System & network I/O module controls…
CLD 7.50 ppm
System SIO module…
System DIO module…
stem & Network I/O Module Controls --
-- S
Measure
Figure 3-41. System & Network I/O Module
Controls Menu
Press the ↵ or → keys to change to the desired submenu.
If there is no SIO module installed in the analyzer, a corresponding message will be displayed instead of the menu.
The “System SIO Module” menu provides
submenus for setting up the output configurations of the SIO signals. The SIO board can
contain 2 to 8 analog outputs, a serial interface (RS232 or RS485), and three relay outputs. General configuration of the SIO board
is contained in its own manual. If the SIO
board is installed in the analyzer, the line
“Module installed:” must be set to “Yes.”
>>>Back…<<<
6. Attempt to recalibrate the Analyzer
Module according to the procedure
outlined in Section 3-8c, page 3-22.
To access this menu, in “System & network
I/O module controls…”, select “System SIO
module…”.
If recalibration fails, return to the
Range Factors menu, readjust Zero
Offset and Span Factor values, and
try calibrating again.
3-9 SYSTEM & NETWORK I/O MODULE CON-
TROLS (SETUP) – SYSTEM SIO
This menu provides access to several submenus for setting parameters of the SIO (Signal Input/Output) and DIO (Digital
Input/Output) of the analyzer.
CLD 7.50 ppm
Analog output setup…
Serial interface setup…
Relay outputs setup…
Module installed: Yes
Measure
stem SIO Module --
-- S
Back…
Figure 3-42. System SIO Module Menu
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Select a line with the ↑ or ↓ keys.
Select the variable or change to the submenu
with the ↵ or → keys.
Select the variable parameter with the ↑ or ↓
keys.
Confirm the new value with the Enter ↵ key or
cancel and return to the last value with the F2
key.
a. Analog Output Setup
In the System SIO Module menu (Figure
3-42, page 3-25), select Analog output
setup…
CLD 7.50 ppm
-- Anal
zer Modules --
Measure
Figure 3-43. Analyzer Modules Menu
Select analog output number:
Choose the desired analog output (1-8) to
set the parameters. The number of outputs depends on the analyzer configuration as 2, 4, 6, or 8.
Choose the analyzer module…
Select the “Analyzer Modules” submenu
by selecting the “Choose signal source
module…” line and pressing the ↵ key.
Select the tag of the desired reference
channel with the ↑ or ↓ keys and then
press the ↵ or → key. The display will return to the previous menu automatically
and the selected reference channel will be
displayed in the “Source module:” line.
The available selections may be different
depending on the installed modules.
Choose signal…
CLD: 1.0
MLT/CH1
MLT/CH2
MLT/CH3
>>>Back…<<<
CLD 7.50 ppm
Output number: 1
Choose signal source module…
Choose signal…
Signal value for 0 % output: 0.00
Signal value for 100 % output: 100.00
Output current: 0…20 mA
Hold output during calibration: No
Signal name: Sample flow
Current signal value: 8.60
Source module: CLD
Measure
-- Analo
Output Setup --
More…Back…
Figure 3-44. Analog Output Setup
Menu
Choose signal…
Select the “Signals” submenu by selecting
the “Choose signal…” line and pressing
the ↵ key. (The list of signals will depend
on the module chosen.)
Press the F5 key to go to additional
menus to choose the Primary Variable
signal for the analog output. The Primary
Variable is the actual NO or NOx concentration.
The signal chosen here will be applied to
the analog output (1-8) chosen above.
See Section 3-7b, page 3-12 for a list of
the signals and their values.
CLD 7.50 ppm
Measure
CLD 7.50 ppm
Measure
-- Si
-- Si
nals --
nals --
Sample flow:
Sample press:
Ozonator:
Converter temp:
Block temp:
Detector temp:
NO/NOx:
Noise level:
>>>Back…<<<
t90 time:
Output delay time:
Calibration status:
Linearizer:
Measurement mode:
Operational status:
Health:
Interference:
>>>Back…<<<
Figure 3-45. Signals Menu
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Signal value for 0% (100%) output:
It is possible to set the signal value for 0%
output and for 100% output so as to output only a portion of the entire range.
Example:
Range from 0 to 1000 ppm
0% value to be 400 ppm, 100%
value to be 700 ppm.
Analog output normally: 0V = 0
ppm, 10v = 1000 ppm
After changing the output scaling:
0V = 400 ppm, 10V = 700 ppm
Move the cursor to the “Signal value for
0% output:” line and adjust the value to
400. Then change to the “Signal value for
100% output:” line and adjust the value to
700.
NOTE
If the measurement range is changed,
the settings done in this menu will revert back to the standard values of the
range. The output values can be
changed permanently in the menu
“Range Settings.” See Section 3-7a,
CLD 7.50 ppm
-- Out
Output(s) value on analyzer failure: BeginOfRange – 10 %
Output number: 1
Operation mode: Normal
Fine adjustment for 0 % output: 4096
Fine adjustment for 100 % output: 819
Measure
ut Signal if Assigned Module Fails --
-- Fine Adjustment –
More…Back…
Figure 3-46. Output Signal If Assigned
Module Fails Menu
Output(s) value on analyzer failure:
Choose the desired signal level to cause
a failure condition. The choices are:
Actual
BeginOfRange
EndOfRange
BeginOfRange-10%
BeginOfRange+10%
Output number:
Choose the output number (1-8) for setting the fine adjustment.
page 3-12.
Operation mode:
NOTE
The signal range of the analog output
should not be less than the smallest
range of the channel. Otherwise the
analog output may exhibit excessive
noise.
Output current:
Select the desired output range in the
“Output current range:” line. The options
are 0…20 mA or 4…20 mA.
Hold output during calibration:
Enable this option to hold the analog output to the last value during calibration.
Pressing the F5 (More…) key changes to
the submenus “Output Signal if Assigned
Module Fails” and “Fine Adjustment.”
Normal: The absolute measurement sig-
nal will be sent to the analog output.
Adjust 0V: Used to set the display equal
to the analog output for 0V and 0 mA. Life
zero signals (4-20 mA and 2-10V) are set
automatically and cannot be adjusted.
Adjust 10V: Used to set the display equal
to the analog output for 10V and 20 mA.
Select the “Fine adjustment for 0% output” and/or “Fine adjustment for 100%
output” lines with the ↵ or → key. Adjust
to the desired value with the ↑ or ↓ key
and confirm with the ↵ key. The range of
values are:
3000 to 6000 for 0% (default 4096)
600 to 1000 for 100% (default 819)
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The last three lines of the “Analog Output
Setup” menu are display only for configu-
This menu allows for the setting of the
update rate for each of the 8 outputs.
ration values of the analog output.
b. Serial Interface Setup
Signal name: The name of the signal chosen in the “Choose signal” menu.
The submenu “Serial Interface Setup” is
used to set the parameters for data transCurrent signal value: The current value
of the variable.
fer between the analyzer and external de-
vices. The choices in this menu depend
on the configuration of the analyzer. The Source module: The name of the module chosen in the “Choose signal source
full specification of the serial interface is
described in its own manual.
module” menu.
In the System SIO Module menu (Figure
Pressing the F5 (More…) key changes to
the submenu “Special Scaling for Con-
3-42, page 3-25), select “Serial interface
setup…”
centration Signal.”
CLD 7.50 ppm
-- Special Scaling for Concentration Signal –
(Scaling is the same as range limits)
Output #1: Yes
Output #2: Yes
Output #3: Yes
Output #4: Yes
Output #5: Yes
Output #6: Yes
Output #7: Yes
Output #8: Yes
Measure
More…Back…
Figure 3-47. Special Scaling for
Concentration Signal Menu
This menu allows for the setting of each
of the 8 outputs to be the same as the
range limits “Yes” or as set on the previous menus.
CLD 7.50 ppm
Baud rate: 19200
Data bits: 8
Stop bits: 1
Parity: None
Echo mode: Disabled
Handshake: Xon/Xoff
Transmission delay: 0
Type of installed serial interface: RS232
Communication protocol: AK
Special protocol definitions…
Measure
-- Serial Interface Setu
--
Back…
Figure 3-49. Serial Interface Setup
Menu
Options:
Baud rate: 300, 1200, 2400, 4800, 9600,
19200
Data bits: 7, 8
See Section 3-7a, page 3-12 for setting
the range limits.
Pressing the F5 (More…) key changes to
the submenu “Analog Output Updates per
Second.”
CLD 7.50 ppm
Output #1: 10
Output #2: 0
Output #3: 0
Output #4: 0
Output #5: 0
Output #6: 0
Output #7: 0
Output #8: 0
Output Updates per Second --
-- Analo
Stop bits: 1, 2
Parity: None, Even, Odd
Echo mode: Enabled, Disabled
Handshake: None, Xon/Xoff
Transmission delay: 0…100.
Type of installed serial interface: RS232,
RS485/2w, RS485/4w, RS485/4w bus,
None
Communication protocol: AK, MODBUS
RTU, None (not applicable to CLD)
Measure
Back…
Figure 3-48. Analog Output Updates
per Second Menu
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The “special protocol definitions…”
line accesses a submenu for setting
the parameters of the AK and MODBUS
TRU communication protocols.
CLD 7.50 ppm
Device address (RS-485 only): 1
Measure
Figure 3-50. AK Protocol Definitions
The value can range from 1 to 50.
c. Relay Outputs Setup
There are three relays on the SIO board.
The contact logic can be set with a jumper
on the SIO board to select NO (normally
open) or NC (normally closed). Full details
of the SIO board are contained in its own
manual.
In the System SIO Module menu (Figure
3-42, page 3-25), select “Relay outputs
setup…”
CLD 7.50 ppm
Output number: 1
Invert signal: Disabled
Choose source module…
Choose signal…
Signal comes from: Control module
Signal name: Failure
Actual status: Off
Measure
Figure 3-51. Relay Outputs Setup
NOTE
-- AK Protocol Definitions --
Back…
Menu
-- Rela
Outputs Setup --
Menu
Back…
Output number:
Corresponds to the relay number 1-3.
Invert signal:
“Disabled” signal is normal, “Enabled”
signal is inverted.
Choose source module..
CLD 7.50 ppm
-- Choose Source Module --
Control module: 0.0
CLD: 1.0
Measure
Figure 3-52. Choose Source Module
Menu
Choose desired source module for the relay output number (1-3) being configured.
The list of modules will depend on the installed modules.
Choose signal
CLD 7.50 ppm
…
-- Choose Si
Measure
Figure 3-53. Choose Signal Menu
Choose desired signal for the relay output
number (1-3) being configured.
The list of signals will depend on the chosen module. If available, press the >>>
(F5) softkey for additional signals.
The three lines displayed at the bottom of
the “Relay Outputs Setup” menu show the
current status of the selected relay output.
Back…<<< >>>
nal --
Function control
Maintenance reques
Cal. In progress
Zero in progress
Span in progress
Back…
Failure
Zero failed
Span failed
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Signal comes from: The module chosen
from the “Choose Source Module” menu.
Signal name: The signal chosen from the
“Choose Signal” menu.
Actual status: The current status of the
signal; Off or On.
3-10 SYSTEM & NETWORK I/O MODULE CON-
TROLS (SETUP) – SYSTEM DIO
Selecting “System DIO module…” from the
“System & Network I/O Module Controls”
menu (Figure 3-41, page 3-25) provides submenus for setting up the output configurations
of the DIO signals. The DIO board is comprised of 8 digital inputs and 24 digital outputs. Functions of supported analyzer
modules can be attached to each input and a
signal to each output. Further detailed information about the DIO board is contained in its
own manual.
If there is no DIO module installed in the analyzer, a corresponding message will be displayed instead of the menu.
Main Menu
↓
Analyzer and I/O, expert controls & setup…
↓
System & Network I/O Module Controls…
↓
System DIO module…
CLD 7.50 ppm
Input number: 1
Output number: 1
Choose module…
Choose signal…
Invert signal: No
Module status: ???
Slot ID: ???
Signal name: ???
Signal level: 000.0
Signal comes from: ???
Measure
stem DIO Module --
-- S
Back…
Figure 3-54. System DIO Module Menu
For detailed information on the installation and
setup of the DIO module, see the NGA 2000
Platform manual P/N 760006.
3-11 SYSTEM CONFIGURATION AND DIAGNOS-
TICS
This menu and its submenus provides for
setup of the system parameters for the platform.
Main Menu
↓
System configuration and diagnostics…
CLD 7.50 ppm
stem Configuration and Diagnostics --
-- S
System calibration…
Diagnostic menus…
Load/Save configuration (CM/MCA)
Date and time…
Security codes…
Network module management…
System reset…
Pump 1: Off
Pump 2: Off
System tag:
Measure
Channel
Back…
Figure 3-55. System Configuration and
Diagnostics Menu
The following is a short overview of the contents of the menus:
1
System calibration…
Diagnostic menus…
Control module diagnostics…
1
Analyzer module diagnostics…
Software error messages
Loading/saving configuration parameters…
Sending or loading of analyzer configuration
data by the serial interface
Date and time…
Date and time setup of the analyzer
Security codes…
Setup of security codes for the different operating levels
Network module management…
1
System reset…
System reset and re-initializing of the analyzer
1
Not used in this module. See NGA 2000 Platform man-
ual PN 760006.
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-31
Instruction Manual
y
760009-B
November 2002
Model NGA2000 WNX and WCLD
a. Diagnostic Menus
From the “System Configuration and Diagnostics” menu (Figure 3-55, page 3-
30), select “Diagnostic menus…”.
CLD 7.50 ppm
Control module diagnostics…
Analyzer module diagnostics…
Measure
Figure 3-56. Diagnostic Menu
This menu has two submenus for viewing
and resetting any software errors.
The “Control module diagnostics” menu is
not applicable to this analyzer model.
Analyzer module diagnostics…
From “Diagnostic Menus” (Figure 3-56,
page 3-31), select “Analyzer module diagnostics…”
CLD 7.50 ppm
Power supply voltages…
Primary variable parameters…
Physical measurement…
Temperature control parameters…
NO/NOx flow balance…
Miscellaneous control parameters…
Trend display control…
Software diagnostics…
Alarm message valid for: FAILURE
Start up analyzer…
NOx converter efficienc
HOME
Figure 3-57. Analyzer Diagnostics
This menu provides access to several
submenus for viewing and adjusting the
various CLD module parameters.
Choose one of the submenus to view or
adjust the parameters.
The “Alarm messages valid for:” functions
allows a choice of annunciation for these
choices:
-- Diagnostics Menus --
<<<
-- Analyzer Diagnostics --
…
ESCAPE
Menu
Back…
>>>
INFO
WARNING
FAILURE
SAFETY FAILURE
ANY
Power supply voltages…
CLD 7.50 ppm
+15V analog is: 15.06 V
+15V analog was: 0.0 V
-15V analog is: 15.26 V
-15V analog was: 0.0 V
+5V digital is: 4.980 V
+5V digital was: 0.0 V
+25V power is: 23.73 V
+25V power was: 0.0 V
+12V analog is: 11.98 V
+12V analog was: 0.0 V
HOME
-- Analyzer Diagnostics -Power supply voltages
ESCAPE
MORE
INFO
Figure 3-58. Power Supply Voltages
Menu
The “is” lines show the current value of
the power supplies. The “was” values
show the values when the analyzer was
manufactured. Changes of more than a
few percent should be tracked. The 24V
power supply may differ substantially if
the Rosemount Analytical power supply is
not used. Use the MORE (3) softkey to
see additional values.
Primary variable parameters…
CLD 7.50 ppm
Raw measurement signal: 521651.7
Signal gain setting: 64
Current range: 1
Barometric pressure compensation: Enabled
Pk-pk noise: 39.9 ppm
Peltier device voltage: Failure
Reference duty cycle: 0.278500 0
Duty cycle coefficient: -0.0681700
(Temperature compensation coefficients…)
Calibration factors…
HOME
Primary variables parameters
ESCAPE
INFO
Figure 3-59. Primary Variable
Parameters Menu
Shows the value of internal parameters
used in the primary variable calculation.
Barometric pressure compensation may
be enabled if another analyzer has a
pressure measurement device and is set
to report its reading.
For “Calibration factors…” see Section 38c.
3-32 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
Physical measurement…
CLD 7.50 ppm
Sample capillary pressure: 4.0 hPa
Ozone supply pressure: -4.0 hPa
Ozonator status:
Ozonator power: Enabled
Bypass flow: 3 ml/min
Converter temperature: 29.2 C
Ozonator temperature: 29.2 C
Sensor temperature: 29.2 C
Block temperature: 29.2 C
Capillary flow rate: 200.0 ml/min
Pressure limits…
HOME
Physical Measurements
ESCAPE
MORE
HISTORY
INFO
Figure 3-60. Physical Measurements
Menu
These are measurements made by the
analyzer module to verify proper functioning and appropriate flows of sample and
support gases, if any. See Section 3-7i,
page 3-18 for a complete description.
Temperature control parameters…
CLD 7.50 ppm
Converter set point: 300 C
Converter P gain: 0.015
Converter I gain: 0.000125
Converter bias: 0.6 C
Converter temperature: 28.6 C
Detector set point: 51.5 C
Detector P gain: 0.100
Detector I gain: 0.000170
Detector bias: 0.4 C
Detector temperature: 29.2 C
HOME
Temperature control
ESCAPE
MORE
INFO
Figure 3-61. Temperature Control
Menu (Screen 1)
Displays the parameters used by the
temperature control PID algorithms. Allows setting of the warning alarms for the
temperatures.
Press the MORE (F3) softkey for the
Ozonator settings (Temperature Control
Menu, Screen 2).
CLD 7.50 ppm
Ozonator set point: 58.0 C
Ozonator P gain: 0.100
Ozonator I gain: 0.000170
Ozonator bias: 0.4 C
Ozonator temperature: 29.2 C
Minimum full-on block FET current: 1.000 A
Temperature control
HOME
ESCAPE
INFO
Figure 3-62. Temperature Control
Menu (Screen 2)
NO/NOx flow balance…
CLD 7.50 ppm
NOx correction factor: 1.0000
NO/NOx flow balance
Calculate factor using pressure ratio…
Calculate factor using span gas response ration…
HOME
ESCAPE
INFO
Figure 3-63. NO/NOx Flow Balance
Menu
Since the sample flows through separate
paths in the NO and NOx mode of measurement, there are differences in the flows
entering the reaction chamber of the two
modes. The CLD analyzer uses a correction factor in the NOx mode to compensate for the reduced flow rate. This
correction factor can be entered manually
or it can be calculated by the analyzer using one of two methods. One is based on
adjusting to respond equally to a span
gas and the other is based on adjusting
for equal capillary pressure.
Displays the parameters used by the
temperature control PID algorithms.
Allows setting of the warning alarms for
the temperatures.
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-33
To start the automatic measurement and
flow balance calculation cycle, enter the
appropriate menu and follow the directions.
Instruction Manual
Y
760009-B
November 2002
CLD 7.50 ppm
This procedure will calcul ate the NO/NOx flow balance
correction factor by measuring the capillary head both the
NO pressure used in both the NO and NOx modes and
using the ratio between the two pressures as the correction
factor.
Press the CALC softkey to start the measurement and
calculation.
Status: Factor entered manually
HOME
It is recommended to flow the gas at the
same pressure and flow rate as the sample gas.
b. Load/Save Module Configuration
From the “System Configurations and Diagnostic” menu (Figure 3-55, page 3-30),
select “Load/save configuration
(CM/MCA)…
This menu provides several functions to
send or load configuration data of the
analyzer through the serial interface.
These functions are only available if an
SIO with serial interface is installed.
When loading configuration data all of
the current configuration in the memory will be overwritten.
CLD 7.50 ppm
Send configuration to s erial interf ace!
Load configuration from serial interface!
Replace current configuration with fac tory settings!
Calculate factor using pressure ratio
ESCAPE
CALC
Figure 3-64. Calculate Factor Using
Pressure Ratio Menu
NOTE
-- Load/Save Configuration (CM/MCA)
- BE CAREFUL with this functi on -
Model NGA2000 WNX and WCLD
Send configuration to serial interface !
The configuration data in memory will be
sent through the serial interface of the
analyzer to an external computer or other
device.
Load configuration data from serial in-
INFO
terface !
Configuration data will be loaded into
memory from an external computer or
other device through the serial interface of
the analyzer. The current configuration in
memory will be overwritten.
Replace current configuration with factory settings !
Deletes the configuration in memory and
re-establishes the factory default setting
from the Flash-EPROM.
c. Date and Time
From the “System Configurations and Diagnostic” menu (Figure 3-55, page 3-30),
select “Date and time…”
CLD 7.50 ppm
Minutes: 0
Hours: 12
ear: 2000
Day: 1
Month: 2
Network updating: Enabled
Current time: 08:45:35 February 01, 2000
Measure
-- Date and Time --
Set!
Back…
Figure 3-66. Date and Time Menu
This menu is used to set the date, time
and format for the analyzer.
Select a line with the ↑ or ↓ keys.
Measure
Back…
Press the ↵ or → keys to select the parameter.
Figure 3-65. Load/Save Configuration
(CM/MCA) Menu
If asked, confirm with the F2 (Yes) key or
cancel and go back to the menu page
with the F4 (Back…) or ← key.
3-34 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Select any digit with the ← or → key and
set a new value with the ↑ or ↓ key.
Network updating:
Not used with this model.
Model NGA2000 WNX and WCLD
A
Instruction Manual
760009-B
November 2002
Set up a new date or time:
Set the “Minutes,” “Hours,” “Year,” “Day,”
or “Month” lines and make any desired
adjustments. Press the F3 key to set the
new time and date. The “Current time”
line will change to reflect the new time
and date set.
d. Security Codes
From the “System Configurations and Diagnostic” menu (Figure 3-55, page 3-30),
select “Security codes…”
This menu is used to set the security
codes for the three levels of security.
If a security code is lost or forgotten,
there is no possibility of entering the
locked security level.
CLD 7.50 ppm
Basic level security: Disabled
Expert level security: Disabled
System level security: Disabled
Define basic level security PIN…
Define expert level security PIN…
Define system level security PIN…
Measure
CAUTION
-- Security Codes --
Back…
Example:
CLD 7.50 ppm
The actual PIN is prepresented by the order in which they
Actual PIN: 12345
BCDE1
Enable the security code
-- Define Basic Leve l Security PIN --
Press five softkeys in any order to define the PIN
are pressed, and shown numberically below.
Press the left arrow key when you are done.
FGHIJ2
KLMNO3
PQRST4
UVWXYZ5
Figure 3-68. Define Basic Level
Security PIN Menu
Enable Security Code
Select the desired security level line to
enable. Change the parameter to “Enabled.”
CAUTION
If System level is enabled, it will not be
possible to re-enter the Security Setup
and change back to Disabled without
the code.
Entering A Level Locked By Security
Code
For example, return to the Main Menu by
pressing the F4 key twice.
Figure 3-67. Security Codes Menu
Use the function keys F1 to F5 to enter
the numerical security code in the desired
sequence. The numbers will appear in the
“Actual PIN” line as they are entered. The
characters displayed on the function keys
Attempt to enter an enabled level by
choosing the menu line. A new menu will
appear requesting entry of the security
code. Enter the correct code using the
correct sequence of function keys. The
asterisk (*) symbol will appear for each
entry.
cannot be entered as code numbers.
If the code is incorrect, the message
Setting The Code Numbers
“Ready” will appear in the line and access
to the locked level is prevented. If the
Enter the submenu for the desired security level to set the PIN. The default values are:
Basic level: 12345
code is correct, the display will change to
the locked level after the last digit of the
correct code is entered.
NOTE
Expert level: 54321
System level: 12345
Once a locked security level has been
entered, it will remain unlocked even
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-35
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
after exiting to a different security
level. To protect the level, press the F4
(Lock..) key in the Main Menu after returning from the locked level.
Press the ← key to return to the “Security
setup” menu.
e. System Reset
From the “System Configurations and Diagnostic” menu (Figure 3-55, page 3-30),
select “System reset…”
CLD 7.50 ppm
-- System Reset --
Are you sur e?
System reset!
Measure
Back…
Figure 3-69. System Reset Menu
Resets the analyzer to the initializing
mode which is the same as switching the
power off and then on.
3-12 CONVERTER TEMPERATURE ADJUST-
MENT
The vitreous carbon converter used in this
analyzer module must be checked periodically
to assure that it is working at peak efficiency.
The efficiency of the converter is typically 95%
to 98%, that is, 95% to 98% of the nitrogen
dioxide introduced to the module is reduced to
nitric oxide. That is well above the 90% minimum required by the Environmental Protection Agency. (Refer to 40 CFR 60, App. A,
Method 20)
Two conditions reduce the efficiency of the
converter:
• The converter is operating at too low a tem-
perature and the efficiency drops or
• The converter is operating at too high a
temperature and the nitrogen dioxide is re-
duced to nitrogen, which is not detectable by
the chemiluminescense reaction.
Initially, an interval of one week between converter efficiency checks is recommended because high temperature operation changes
conditions inside the converter. The active
surface area of the vitreous carbon increases
through use. Initially, when the surface area is
low, the temperature at which converter efficiency peaks is relatively high. This peak
temperature moves downscale as surface
area increases, and less external energy is
required to cause adequate conversion.
The nominal range of converter operational
temperatures is 300°C to 400°C (572°F to
752°F). The current converter temperature
can be viewed in the “Physical measurement”
menu. To access the converter temperature
adjustment:
Main Menu
↓
Analyzer and I/O expert controls &
setup…
↓
Analyzer module setup…
↓
Physical measurements parameters…
Follow this procedure to optimize the operating temperature of the converter:
1. Power up the module and allow it to stabilize at operating temperature (about one
hour).
2. Check the Converter Temperature in the
Physical Measurements menu (See Section 3-7b, page 3-12). Note the value for
future reference.
3. Introduce a calibration gas of known
(NO
) concentration into the analyzer and
2
note the concentration value determined
when the full response has been
achieved.
4. Change Converter Setpoint in the “Temperature Control” menu to 300°C (See
Section 3-11a, page 3-31). Allow module
15 minutes to stabilize, recheck the con-
3-36 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
centration value and note the value for
later use.
5. Increase the Converter Setpoint value by
20°C, wait 15 minutes, and note the concentration value. Repeat this step until either a converter efficiency of between
95% and 98% is obtained or the final
20°C increment produces an efficiency increase of less than one percent.
6. Decrease the Converter Setpoint value by
5°C, which places the converter at a temperature suitable for low ammonia interference and efficient NO
7. Recheck the Converter Temperature
value in the “Physical Measurements”
menu, and compare it to the initially recorded value.
conversion.
2
NOTE
Converter temperature is not a direct
measure of converter efficiency. Temperature measurement is for reference purposes only.
a. Test Setup for Measurement of Con-
version Efficiency
A typical setup for measurement of conversion efficiency is shown in Figure 3-70,
page 3-39. The test setup includes:
A cylinder of nitric oxide standard gas
consisting of NO in N
The concentration of NO in the standard
gas should be about the full-scale value of
the range under test. The test sample
supplied to the analyzer should contain a
concentration of NO comparable to that in
the samples that are to be analyzed. Alternatively, a higher concentration NO
standard may be used if the test setup includes provision for diluting it appropriately with zero air. Suitable standard
gases are available from various suppliers. Stainless steel cylinders are commonly used, but specially treated
aluminum is preferred for low
parts-per-million NO samples.
2
3-13 MEASUREMENT OF CONVERTER EFFI-
CIENCY
It is the responsibility of the user to measure
efficiency of the NO
initial startup and thereafter at intervals appropriate to the application (normally once a
month).
The reactant material used in the converter
provides the optimum combination of high
conversion efficiency and low ammonia interference. Unlike most competitive analyzers,
the NGA 2000 CLD Analyzer Module utilizes a
reactant material that gradually becomes
more efficient at a given temperature. Thus,
after a period of use, operation at a lower
temperature setpoint than initially required is
possible.
2-to-NO converter during
An ozone generator utilizing an ultraviolet
lamp, not a corona discharge
A corona discharge ozone generator is
undesirable because it may produce oxygen atoms, which can then combine with
atmospheric nitrogen to form NO. The result can be an erroneously high value for
the measured conversion efficiency.
b. Test Procedure
1. Measure converter temperature in
the sub-menu structure as described in Section 3-7i, page 3-18.
Note present reading as a reference
for comparison with subsequent
readings.
2. Lower converter temperature to
300°C as described in Section 311a, page 3-31, Temperature Control Parameters, and wait 15 minutes for temperature equilibration.
3. (See Figure 3-70, page 3-39) Connect the Model 958 Converter Effi-
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-37
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
ciency Tester to the CLD Module,
and follow Steps 4 through 17 below
(as adapted from 40 CFR 60):
4. Attach the NO/N
supply to C2, the
2
air supply to C1, and the CLD Module inlet fitting to C3.
5. With the variable transformer off,
switch the CLD Module to NO
mode, and close valve MV1.
6. Open valve MV2 until the CLD
Module SAMPLE Pressure Gauge
reaches operating pressure and the
BYPASS flowmeter indicates some
bypass flow. Wait until stable readings are obtained by the CLD Module.
7. Zero and span the Analyzer output
to indicate the value of the NO concentration being used. This value
should be about 80% of full-scale.
Record this concentration.
8. Open valve MV1 (air supply metering valve) and adjust to blend
enough air to lower the NO concentration (as noted above) about 10%.
Record this concentration.
9. Power up the ozonator, and increase its supply voltage until the
NO concentration noted in Step 8 is
reduced to about 20 percent of the
concentration noted in Step 7. Wait
for stabilization. NO
formed from the NO + O
is now being
2
reaction.
3
There must always be at least 10
percent un-reacted NO at this point.
Record this concentration.
10. Switch the CLD Module to NOx
mode. Total NOx concentration is
now output to the network for display. Record this concentration.
12. Close valve MV1. The NO concentration should be equal to or greater
than the reading in Step 7. This indicates whether the NO contains
any NO
.
2
13. Calculate the efficiency of the NO
converter by substituting the concentrations obtained during the test
in the equation below:
%efficiency = 1 + x 100
a - b
-
Where:
a = recorded concentration in Step 10
b = recorded concentration in Step 11
c = recorded concentration in Step 8
d = recorded concentration in Step 9
In the example in Figure 3-70B, page
3-39, the following calculations would
apply:
%efficiency = 1 + x 100 = 92%
80 - 85
-
Efficiency checks should be made on
each analyzer range, using an NO
span gas concentration appropriate
to the instrument range.
NOTE
In the initial measurement, after
lowering the temperature setpoint
in Step 2, the efficiency will normally be less than 92%.
4. Reset converter temperature setpoint
20°C higher, wait 15 minutes for
temperature equilibration, and
measure conversion efficiency by repeating Steps 3 through 13. Conversion efficiency should be improved.
11. Turn off the ozonator, and allow the
Analyzer reading to stabilize. Total
NOx concentration of the dilute NO
span gas initially used is displayed.
Record this concentration.
3-38 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
5. Repeat Step 14 until: a) 95% to 98%
efficiency is attained or b) the final
20°C converter temperature adjustment yields an increase in efficiency
of less than 1%.
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
6. Reset converter temperature setpoint
5°C lower. Converter temperature is
now set to the front edge of the plateau on the efficiency-vs.-temperature curve. (See
Figure 3-71, page 3-40.) This setting
should provide the optimum combination of high conversion efficiency
and low ammonia interference.
7. Wait 15 minutes for temperature
equilibration, and check converter
temperature. Compare present temperature with original value. Normally, converter temperature should
be in the range of 300°C to 400°C
(572°F to 752°F).
c. Subnormal Conversion Efficiency
If a measured conversion efficiency of between 95% and 98% is unobtainable
within the normal temperature range, the
most probable cause is depletion of the
catalytic material within the converter.
However, before concluding that the converter is defective, ensure that the conversion efficiency measurement is
accurate. Though the measured efficiency
is less than the 95% to 98% range, the
actual efficiency may be somewhat
higher.
An apparent subnormal efficiency can be
due to a problem external to the Analyzer
Module, perhaps located either within the
test setup or between it and the Analyzer
Module. Check the following:
1. Leakage.
d. Replacement of Converter
If the subnormal conversion efficiency is
real, and not due to measurement error
introduced by the test setup, the converter
must be replaced. See Section 4-4d, page
4-6.
The usual cause of converter failure is
destruction of a large part of the catalytic
material by excessive heat. This is due either to an excessively high temperature
setpoint or failure of the converter temperature control circuitry.
e. Capillaries
Replacement vent and pump capillaries
should be installed finger-tight. Use of a
wrench can constrict capillaries, thus
changing flow rate. Sample capillary is
metal; use a wrench for tightening.
f. TEA Scrubber
The presence of NO2 in the NO cylinders
can cause inaccurate converter efficiency
values. The TEA Scrubber accessory
(P/N NL635741) can be used to remove
residual NO
of this accessory allows an NO
calibration gas.
from the NO cylinders. Use
2
2-free NO
2. Loss of NO
Analyzer Module. Such loss can occur by reaction with a rubber diaphragm in a pressure regulator or
flow controller. Stainless steel diaphragms are preferred. Loss can
also occur during passage through
filter media.
between test setup and
2
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-39
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
A. TYPICAL TEST SETUP
FLOWMETER
FM2
METERING
VALVE MV2
CONNECTOR C2
STANDARD GAS:
NO IN N
BACKGROUND
2
OFF
115
ON
VAC
VARIABLE
TRANSFORMER
T1
CONNECTOR C1
ZERO AIR
CONNECTOR C3
OZONATOR
UTILIZING
ULTRAVIOLET
LAMP
FLOWMETER
FM1
METERING
VALVE MV1
CAUTION: Externally limit sample
flow rate to less than 2200 cc/min.
TO SAMPLE INLET OF
CLD ANALYZER MODULE
FLOW APPROXIMATELY 3
LITERS PER MINUTE
ALL LINES AND FITTINGS STAINLESS STEEL OR
TEFLON
B. TYPICAL TEST RESULTS
NO in
2
N
85
90
80
20
0
Figure 3-70. Measuring Efficiency of NO2 to NO Converter
c
AIR ADDED
c-d
NO Mode
OZONATOR OFF
OZONATOR
ON
d
TO NOX
MODE
NOX Mode
a-b
a
b
% Efficiency = 100
a - b
1+
( )
c - d
3-40 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
A
97%
bout
Instruction Manual
760009-B
November 2002
Final 2 degree
higher
adjustment
Final 1 degree lower
Converter
Efficiency
adjustment
Converter Temperature
Figure 3-71. Conversion Efficiency as a Function of Converter Temperature
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-41
Instruction Manual
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November 2002
Model NGA2000 WNX and WCLD
3-42 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
SECTION 4
MAINTENANCE AND SERVICE – WET NOx
Instruction Manual
760009-B
November 2002
WARNING
ELECTRICAL SHOCK HAZARD
Servicing requires access to live parts which can
cause death or serious injury. Refer servicing to
qualified personnel.
Disconnect power to module(s) prior to servicing.
4-1 OVERVIEW
The WNX Analyzer Module requires very little
maintenance during normal operation.
Figure 4-1. WNX - Power Fuse Location
Several components may require replacement. These are discussed in the following
sections.
4-2 POWER FUSE
NOTE
Before replacing the main power fuse, remove power to the Analyzer Module.
See Figure 4-1 for the location of the main
power fuse (PN 856680), which protects 24
VDC input to the module.
Power Fuse
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service – Wet NOx 4-1
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
4-3 PERISTALTIC PUMP
The peristaltic pump is rated for 4000 hours.
The peristaltic pump tube is rated for approximately 1800 to 2000 hours, dependent
on flow and environmental conditions.
NOTE
If the pump is not replaced according to
this schedule, it may fail to dispose of the
water that is condensed from the sample
being processed by the WNX Module. If
that happens, water may be carried over
into the WCLD, causing damage.
If water is carried over into the WCLD,
clean that module as described in Section
5-12, page 5-21
a. Peristaltic Pump - Replacement
1. See Figure 4-2. Remove module
cover.
2. See Figure 4-3. Disconnect peri-
staltic pump connector from Power
Function Board (P8).
3. See Figure 4-1 and Figure 4-4. On
analyzer module front panel, dis-
connect input and output tubes at
pump.
Refer to Figure 4-3:
8. Remove peristaltic pump ON/OFF
toggle switch from front panel.
9. Remove the two mounting brackets
from the pump.
10. Remove the pump and toggle
switch.
11. Assemble new peristaltic pump and
toggle switch to front panel. Switch
must be oriented with unused solder
lug up. Either remove the tabbed
washer on switch, or turn it so tab
faces away from front panel .
12. On front panel, connect input and
output tubes to pump.
13. Connect connector to J8 on the
Module Function Board.
14. Verify that all components and connections are tight.
Replace analyzer module cover.
4-2 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Figure 4-2. WNX - Removing Cover
Pump ON/OFF switch
Instruction Manual
760009-B
November 2002
Peristaltic pump
PN 659275
Pump mounting brackets (2)
Pump mounting nuts (4)
Some components not shown for clarity.
Figure 4-3. WNX - Replacing Peristaltic Pump
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service – Wet NOx 4-3
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
b. Replacing Peristaltic Pump Tube
5. Unwrap tube from roller, and re-
move.
Removal
Replacement tubes are supplied with the
tube fittings installed. Refer to Figure 4-4.
NOTE
Installation
1. Insert one end of tube into bottom
slot.
2. Wind tube around roller.
The pump does not have to be removed from analyzer module front
3. Pull tube through top slot.
panel for this procedure.
4. Close pump door.
1. Set front panel pump switch to OFF.
2. At pump, detach tubing from condensate drain and rear panel.
3. Open door of pump.
4. Pull top tube connector out of slot
(away from front panel).
To Rear Panel
To Condensate Drain
5. Re-attach tubes from condensate
drain and rear panel.
6. Re-start pump.
Tube
PN 904910
Figure 4-4. WNX - Replacing Peristaltic Pump Tube
4-4 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
4-4 OVEN COMPONENTS
NOTE
Plugging of capillaries and lines is usually
due to sample contaminates such as ammonia reacting with the high ozone levels
and NO components. To eliminate the contaminates, a preventive maintenance program should be developed (if dropout is
not excessive). Another source of crystalline formation is contaminated air.
Depending on the component requiring servicing or replacement, the components of the
oven can be serviced in three levels of assembly:
In analyzer module:
• Converter thermostat
• Temperature Sensor
• Thermistor
In analyzer module with removal of rear
panel:
• Needle valve
• Flow restrictor
Removal of regulator/manifold assembly
from analyzer module:
• Manifold heaters
• Solenoid valve
Removal of converter assembly from analyzer module:
2. Pull up on the retaining clip, slide
thermostat away from converter
mounting bracket.
3. Slide replacement thermostat under
clip with wires exiting towards front of
analyzer module.
4. Plug wiring connector into J12 on the
Module Function Board.
b. Manifold Thermistor and Case Ther-
mistor
Refer to Figure 4-5. The thermistor assembly PN 656717 consists of two thermistors (manifold and case) with a
common wiring connector (to J9 on the
Module Function Board). Figure 4-5
shows the location of the manifold thermistor.
1. Disconnect the thermistor wiring
connector at J9 on the Module
Function Board.
2. Pull up on the retaining clip, slide
thermistor away from manifold.
3. Cut tie wrap on case thermistor.
4. Slide replacement manifold thermistor under clip with wires exiting towards the front of the analyzer.
5. The case thermistor is mounted
near the front panel, attached to the
dehumidifer cable with a tie wrap.
• Converter RTD sensor
• Converter Tube
• Converter heater jacket
a. Converter Thermostat
Refer to Figure 4-5.
1. Disconnect the thermostat wiring
connector at J12 on the Module Function Board.
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service – Wet NOx 4-5
Plug wiring connector into J9 on the Module Function Board.
c. Temperature Sensor
Refer to Figure 4-5. Disconnect the thermostat wiring connector at J19 on the
Module Function Board.
Pull up on the retaining clip, slide thermostat away from manifold.
Slide replacement thermostat under clip
with wires exiting upwards.
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
Plug wiring connector into J19 on the
Module Function Board.
Converter Thermostat
PN 660222
Converter
PN 656715
Temperature Sensor
PN 660221
Manifold Thermistor
PN 656717
Figure 4-5. WNX - Removing Converter Thermostat, Manifold Thermistor Temperature Sensor and
Converter
d. Converter
2. Disconnect the two tubes going to
the converter at the blue connectors
CAUTION.
GLASS
The converter uses glass tubing, use care
on the converter.
3. Remove the converter retaining
spring, lift converter from oven.
Reassemble in reverse order.
to avoid breakage.
Converter Components
Refer to Figure 4-5.
1. On the Module Function Board, disconnect the converter jacket heater
wiring connector at J22 and RTD
sensor wiring connector at J1.
Converter must be removed from analyzer module for servicing of the converter.
Refer to Figure 4-6.
RTD Sensor
Slide out of heater jacket as shown.
4-6 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
Converter Tube
1. Unlace heater jacket. Slide converter tube out.
2. Remove blue connectors for installation onto new tube.
3. Wrap the replacement tube with
every-day aluminum foil as shown.
4. Carefully install blue connectors
onto converter tubes.
5. Insert tube into heater jacket with
glass cloth opening on opposite end
of RTD sensor opening.
Heater Jacket
1. Remove RTD sensor and converter
tube.
2. Install RTD sensor into new jacket
as shown.
3. Install converter tube into jacket as
described above.
ASSEMBLED SIDE VIEW
Sensor
Heater
Jacket
655228
Converter
Tube 655227
Glass
Cloth
Wrap with
aluminum foil
RTD Sensor
655282
Figure 4-6. WNX Converter Assembly
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service – Wet NOx 4-7
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
e. Oven Fan
Refer to Figure 4-7.
1. Disconnect fan wiring connector at
Fan Finger Guard
Oven Fan
J10 on the Module Function Board.
Fan Bracket
Figure 4-7. WNX - Removal of Oven Fan
2. Remove the four screws and washers securing the fan, finger guard
and mounting bracket to the oven
wall.
3. Install fan in reverse order.
4-8 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
f. Regulator/Manifold Assembly
To replace the regulator/manifold assembly perform the following:
1. Disconnect and note locations of all
wiring connectors coming from
manifold assembly.
2. Disconnect all tubing to manifold.
3. Remove the two pan head screws
and the two flathead screws securing the rear panel to the chassis.
See Figure 4-8.
4. Remove the four pan head screws
securing the rear panel to the manifold.
The rear panel is now attached to the
analyzer module by the exhaust fan
cable only. The rear panel can be laid
down for servicing of instrument. If
complete removal of the rear panel is
required, disconnect the exhaust fan
wiring connector on the Module Function Board (either J16 or J19) and remove rear panel.
15. Refer to Figure 4-9. Remove the
three socket head screws securing
regulator/manifold to oven wall
Side retaining screw
Flathead screw
Figure 4-8. WNX - Removing Rear Panel
NOTE
Side retaining screw
Insulation
Flathead screw
Pan head screws and
washers (4 ea)
Rosemount Analytical Inc. A Division of Emerson Process Management Troubleshooting 4-9
Instruction Manual
760009-B
November 2002
Heaters
The heater assembly consists of four
heaters. See Figure 4-10 for locations.
Regulator/Manifold Assembly
PN 659800
Model NGA2000 WNX and WCLD
Figure 4-9. WNX - Removing Regulator/Manifold Assembly
3. Push the screwdriver handle toward
the heaters so the screwdriver blade
pushes back against the needle
valve to push it out of the manifold.
When the needle valve is protruding
out the rear of the manifold, pull it
out.
Disconnect the heater assembly wiring
connector J4 on the Module Function
Board. Pull the heater(s) out.
Needle Valve
1. Loosen the three setscrews indicated in Figure 4-10.
2. Insert a flat blade screwdriver into
the slot in the manifold above the
needle valve.
4-10 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Flow Restrictor
Refer to Figure 4-10.
NOTE
Replacement of the flow restrictor can
be performed with analyzer module
components assembled.
Insert a flat blade screwdriver into the slot
of the flow restrictor, turn counterclockwise to remove from manifold.
Model NGA2000 WNX and WCLD
1
1
1
Instruction Manual
760009-B
November 2002
Heaters
Solenoid Valve
Refer to Figure 4-10.
1. Disconnect solenoid valve wiring
connector J15 on the Module Function Board.
Screwdriver blade
in slot
Needle Valve
PN 659808
Set screws (3)
Flow Restrictor
PN 659809
Heater
Heater
2. Disconnect tube.
3. Turn solenoid valve counterclockwise to remove.
Solenoid Valve
PN 660220
1. Heater assembly PN 656756 consists of four heaters.
Figure 4-10. WNX - Regulator/Manifold Assembly
4-5 LON/POWER MODULE
4-6 POWER MODULE
Refer to Figure 4-11.
Refer to Figure 4-11.
1. Disconnect cables installed to front panel
network and/or power connectors.
2. Disconnect wiring cable to power module
assembly, J1 on power module board.
3. Disconnect J5 on the LON/power board.
4. Disconnect ground connection from
LON/power board to chassis at mounting
nut of power module board.
5. Remove the two screws securing the
6. Disconnect wiring connectors J1, J4 and
J5 on the power module board.
7. Remove the two hex nuts securing power
module to chassis.
NOTE
Verify
is secured
that LON/power module ground lug
to mounting nut when installing
power module.
LON/power module to the chassis.
Rosemount Analytical Inc. A Division of Emerson Process Management Troubleshooting 4-11
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
4-7 ELECTRONICS ASSEMBLY
Refer to Figure 4-11.
1. Disconnect all cables connected to electronics assembly, note locations.
2. Remove the two hex nuts securing the
electronics assembly to the chassis.
LON/Power Module
PN 656676
Ground lug from
LON/Power Module
Power Module
PN 657400
Electronics Assembly
Figure 4-11. WNX - Removing LON/Power Module, Power Module and Electronics Assembly
4-12 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
a. Computer Board
Refer to Figure 4-11 and Figure 4-12.
After removing electronics assembly per
Section 4-7, do the following:
Insulator
b. Module Function Board
Refer to Figure 4-11 and Figure 4-12.
1. Disconnect wiring connectors J1,
J2, J3 and J6 coming from the Module Function Board at the computer
analysis board.
2. Remove the four hex nuts securing
computer analysis board (and insulator) to mounting bracket.
Insulator
Module Function Board
PN 656700
Spacer (4)
Mounting Bracket
Spacer (4)
Computer Analysis Board
PN 658350
Figure 4-12. WNX - Electronics Assembly (Exploded View)
4. Remove the four hex nuts securing
Module Function Board (and insulator) to mounting bracket.
After removing electronics assembly per
Section 4-7, do the following:
3. Disconnect wiring connectors J1,
J2, J3 and J6 coming from the computer analysis board at the Module
Function Board.
Rosemount Analytical Inc. A Division of Emerson Process Management Troubleshooting 4-13
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
4-8 EXHAUST FAN
Refer to Figure 4-8 and Figure 4-13.
1. Remove the analyzer module rear panel
per Section 4-4f steps 1 through 4.
2. Disconnect exhaust fan wiring connector
on the Module Function Board.
NOTE
The exhaust fan and intake fan wiring connectors are interchangeable. Either fan
can be plugged into position J16 or J18 on
the Module Function Board
Exhaust Fan
PN 656712
Figure 4-13. WNX - Removal of Exhaust Fan and Screen
.
3. Remove the four hex nuts securing the
fan (and screen) to the rear panel.
a. Exhaust Fan Screen
To maintain fan efficiency, periodically
clean the exhaust fan screen using a
clean, dry brush.
If the screen becomes excessively dirty,
remove the screen per Section 4-8, clean
with a mild detergent and dry.
4-14 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
4-9 INTAKE FAN
Refer to Figure 4-14. The fan mounting
bracket does not have to be removed from
chassis for this procedure as shown.
1. Remove the two hex nuts securing the air
baffle to the chassis.
2. Disconnect intake fan wiring connector on
the Module Function Board.
Figure 4-14. WNX - Removal of Intake Fan
NOTE
The exhaust fan and intake fan wiring connectors are interchangeable. Either fan
can be plugged into position J16 or J18 on
the Module Function Board.
3. Remove the two bottom screws securing
the fan to the fan mounting bracket.
4. Loosen the two top screws securing the
fan to the fan mounting bracket and slide
fan up.
Air Baffle
Fan Mounting Bracket
Intake Fan
PN 656760
Rosemount Analytical Inc. A Division of Emerson Process Management Troubleshooting 4-15
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
4-10 DEHUMIDIFIER
Refer to Figure 4-15.
1. Disconnect dehumidifier wiring connectors J1, J5, J14, and J20 on the Module
Function Board.
Oven components and rear panel not shown
for clarity.
Figure 4-15. WNX - Removal of Dehumidifier
2. Remove the hex nuts securing the air baffles to the chassis, remove baffles.
3. Remove the in, out and drain fittings on
the dehumidifier.
4. Remove the two hex nuts securing the
dehumidifier to the chassis.
Air baffle
Dehumidifier PN
656769
Air baffle
4-16 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
3
G
V
A
≈
V
SECTION 5
MAINTENANCE AND SERVICE – WET CLD
WARNING,
Instruction Manual
760009-B
November 2002
5-1 POWER FUSE REPLACEMENT
ELECTRICAL SHOCK HAZARD
Operate this equipment only when covers
are secured.
Servicing requires access to live parts
which can cause death or serious injury.
Refer servicing to qualified personnel.
Remove power to Analyzer Module prior to
servicing.
For safety and proper performance, this
module must be connected to a properly
grounded three-wire source of electrical
power.
CAUTION.
PARTS INTEGRITY
Tampering or unauthorized substitution of
components may adversely affect safety of
this product. Use only factory documented components for repair.
WARNING.
ELECTRICAL SHOCK HAZARD
Before replacing the fuse, remove power
to the Analyzer Module.
See Figure 5-1 for the location of the main
power fuse, which protects 24 VDC input to
the module.
Sample
Regulator
Balance
Flow
24
1
2
T8
250
LON
LON
+
-
1
2
ND
Figure 5-1. WCLD - Power Fuse Location
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service – Wet CLD 5-1
Power Fuse
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
5-2 FANS
NOTE
Avoid deforming the EMI filter(s) during
assembly.
a. Fan Replacement
Replacement of the intake and exhaust
fans are identical with the exception of the
finger-guard mounted between the EMI filter and fan on the intake fan.
Occasionally the EMI filters may require
cleaning. Refer to Section 5-2b for procedure.
1. Remove the cover from the module
(Figure 5-2).
2. Remove the four screws securing the
rear panel to the chassis. See Figure
5-3.
3. Disconnect and note location of wiring
connector(s).
4. Remove the four hex screws holding
the finger-guard to the fan.
5. Remove the four hex nuts securing
the fan to the rear panel studs.
b. Cleaning EMI Filters
To maintain fan efficiency and filtering of
EMI, the EMI filters should be periodically
cleaned using a clean, dry brush.
If the filter(s) become excessively dirty,
remove the screen(s), clean with a mild
detergent and dry.
Figure 5-2. WCLD - Removing Cover
5-2 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Instruction Manual
760009-B
November 2002
Finger Guard
Exhaust Fan
EMI Filter
Finger Guard
Intake Fan
Finger Guard
EMI Filter
Figure 5-3. WCLD - Removal of Intake and Exhaust Fans
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service – Wet CLD 5-3
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
5-3 TRANSISTOR ASSEMBLY REPLACEMENT
Refer to Figure 5-4.
1. Disconnect and note location of wiring
connector.
2. Remove hex nut securing transistor assembly to mounting stud.
NOTE
Verify that insulator is re-installed.
5-4 OZONE GENERATOR
a. Preventive Maintenance
The intensity of the UV energy from the
ozonator lamp decreases with time, causing a decrease in output of ozone. The
observable symptom is a loss of linearity
in the response of the module. Linearity
should be measured at intervals of three
months (or longer, as experience dictates). The ozonator lamp should be replaced when linearity within specifications
cannot be obtained.
1. Disconnect and note location of wiring connectors.
2. Open the two mounting clamps, remove ozone generator.
5-5 OZONE GENERATOR POWER SUPPLY RE-
PLACEMENT
Refer to Figure 5-4.
1. Open the two mounting clamps holding
the ozone generator. Move ozone generator out of the way.
2. Disconnect and note location of wiring
connector to ozone generator power supply.
3. Remove the two hex nuts securing the
ozone generator power supply to the
chassis mounting studs, remove ozone
generator power supply.
NOTE
Verify that the ground lug is reinstalled.
b. Replacing
Refer to Figure 5-4.
5-4 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Ozone Generator
657719
Transistor Assembly
655264
Insulator
Ground
Lug
Instruction Manual
760009-B
November 2002
Ozone Generator
Power Supply
657716
Figure 5-4. WCLD – Removal of Ozone Generator, Ozone Generator Power Supply, and Transistor
Assembly
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service – Wet CLD 5-5
Instruction Manual
760009-B
November 2002
Model NGA2000 WNX and WCLD
5-6 REPLACING PRINTED CIRCUIT BOARDS
WARNING.
STATIC SENSITIVE COMPONENTS
Circuit boards in this instrument have
static-sensitive components. Take all
static precautions when handling them.
a. Computer Board
1. Refer to Figure 5-5. Remove the
mounting hardware securing the
Computer Board and
Mounting Bracket
Figure 5-5. WCLD - Removing Computer Board and Bracket From Analyzer Module
Computer Board bracket to the
analyzer module front panel.
2. Disconnect and note locations of
wiring connectors on Computer
Board.
3. Refer to Figure 5-6. Remove the
Computer Board from mounting
bracket.
NOTE
When re-assembling, verify that insulator is installed between Signal Board
and mounting bracket.
5-6 Maintenance and Service – Wet NOx Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 WNX and WCLD
Figure 5-6. WCLD – Removing Computer Board From Bracket
b. Signal Board
Computer Board
655520
Instruction Manual
760009-B
November 2002
Mounting Bracket
Insulator
c. Driver Board
Refer to Figure 5-7.
1. Remove the hex nut and two screws
securing the Signal Board and
Driver Board mounting bracket to
the chassis.
2. Disconnect and note locations of
wiring connectors to the Signal
Board.
3. Remove the four hex nuts securing
the Signal Board and insulator to the
mounting bracket, remove Signal
Board.
NOTE
When re-assembled, verify that insulator is installed between Signal Board
and mounting bracket.
Refer to Figure 5-7.
1. Remove the hex nut and two screws
securing the Signal Board and
Driver Board mounting bracket to
the chassis.
2. Disconnect and note locations of
wiring connectors to the Driver
Board.
3. Remove the four hex nuts securing
the Driver Board and insulator to the
mounting bracket, remove Driver
Board.
NOTE
When re-assembled, verify that insulator is installed between Signal Board
and mounting bracket.
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service – Wet CLD 5-7
Instruction Manual
760009-B
November 2002
Mounting Bracket,
Signal Board and
Driver Board
Insulator, Signal
Board
Model NGA2000 WNX and WCLD
Insulator, Driver
Board
Driver Board
655620
Signal Board
655580
Figure 5-7. WCLD – Removing Signal Board, Driver Board
5-8 Maintenance and Service – Wet CLD Rosemount Analytical Inc. A Division of Emerson Process Management
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