Rosemount 951C User manual

Instruction Manual
748214-T
September 2002
http://www.processanalytic.com
Model 951C
NOXAnalyzer

Emerson Process Management
Rosemount Analytical Inc.
Process Analytic Division
1201 N. Main St.
Orrville, OH 44667-0901
T [phone]
F [phone]
e-mail: [email protected]
http://www.processanalytic.com
ESSENTIAL INSTRUCTIONS
READ THIS PAGE BEFORE PROCEEDING!
Rosemount Analytical designs, manufactures and tests its products to meet many national and
international standards. Because these instruments are sophisticated technical products, you
MUST properly install, use, and maintain them to ensure they continue to operate within their
normal specifications. The following instructions MUST be adhered to and integrated into your
safety program when installing, using, and maintaining Rosemount Analytical products. Failure to
follow the proper instructions may cause any one of the following situations to occur: Loss of life;
personal injury; property damage; damage to this instrument; and warranty invalidation.
•Read all instructions prior to installing, operating, and servicing the product.
•If you do not understand any of the instructions, contact your Rosemount Analytical representative
for clarification.
•Follow all warnings, cautions, and instructions marked on and supplied with the product.
•Inform and educate your personnel in the proper installation, operation, and maintenance of
the product.
•Install your equipment as specified in the Installation Instructions of the appropriate
Instruction 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.
Alconox is a registered trademark of Alconox, Inc.
SNOOP® is a registered trademark of NUPRO Co.

Instruction Manual
748214-T
September 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents i
Model 951C
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
Condensed Startup And Calibration Procedure .................................................................................P-7
1-0 DESCRIPTION AND SPECIFICATIONS..............................................................................1-1
1-1 Overview................................................................................................................................1-1
1-2 Typical Applications...............................................................................................................1-1
1-3 Specifications ........................................................................................................................1-2
2-0 INSTALLATION ....................................................................................................................2-1
2-1 Unpacking..............................................................................................................................2-1
2-2 location ..................................................................................................................................2-1
1-3 voltage requirements .............................................................................................................2-1
1-4 Electrical Connections ...........................................................................................................2-1
a. Line Power Connections .................................................................................................2-1
b. Potentiometric Recorder Connections ............................................................................2-3
c. Current Recorder Connections .......................................................................................2-3
1-5 Gas Requirements.................................................................................................................2-5
a. Air (U.S.P. Breathing Grade) ..........................................................................................2-5
b. Span Gas ........................................................................................................................2-5
1-6 Sample Requirements ...........................................................................................................2-5
1-7 Gas Connections ...................................................................................................................2-5
1-8 Leak Test ...............................................................................................................................2-6
3-0 OPERATION .........................................................................................................................3-1
3-1 Front Panel Indicators and Controls......................................................................................3-1
a. Display ............................................................................................................................3-1
b. Range Selection..............................................................................................................3-1
c. Sample Pressure Gauge.................................................................................................3-1
d. Ozone Pressure ..............................................................................................................3-1
e. Zero and Span Potentiometers .......................................................................................3-2
f. Ozone Interlock ...............................................................................................................3-2
3-2 Startup Procedure .................................................................................................................3-3
3-3 Calibration..............................................................................................................................3-6
a. Zero Calibration...............................................................................................................3-6
b. Upscale Calibration.........................................................................................................3-6
3-4 Routine Operation .................................................................................................................3-6
3-5 Converter Temperature Adjustment Procedure ....................................................................3-6
3-6 Measurement of Converter Efficiency ...................................................................................3-8
3-7 Recommended Calibration Frequency..................................................................................3-8

Instruction Manual
748214-T
September 2002
ii Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C
4-0 THEORY................................................................................................................................4-1
4-1 Nitric Oxide Determination by Chemiluminescence Method .................................................4-1
4-2 Analyzer Flow System ...........................................................................................................4-1
a. Flow of Sample, Standard Gas or Zero Gas to Reaction Chamber ...............................4-1
b. Ozone Generation...........................................................................................................4-1
4-3 Signal Conditioning And Display ...........................................................................................4-2
a. Circuit Functions .............................................................................................................4-2
4-4 Analyzer Thermal System .....................................................................................................4-3
5-0 ROUTINE SERVICING..........................................................................................................5-1
5-1 System Checks and Adjustments..........................................................................................5-1
a. Display Fullscale Span Adjustment.................................................................................5-1
b. Overall Sensitivity............................................................................................................5-1
c. Ozone Output..................................................................................................................5-2
d. Background Current........................................................................................................5-2
5-2 Servicing Flow System ..........................................................................................................5-2
a. Cleaning Sample Capillary..............................................................................................5-3
b. Ozone Restrictor Fitting ..................................................................................................5-3
5-3 Photomultiplier Tube/Reaction Chamber ..............................................................................5-3
a. Removal ..........................................................................................................................5-4
b. Cleaning Reaction Chamber...........................................................................................5-4
c. Photomultiplier Tube and Housing..................................................................................5-5
d. Replacement of Photomultiplier Tube.............................................................................5-5
5-4 Ozone Generation System ....................................................................................................5-6
a. Lamp/Housing Removal..................................................................................................5-6
b. UV Lamp Replacement...................................................................................................5-6
c. Power Supply Removal...................................................................................................5-7
5-5 Converter Assembly ..............................................................................................................5-7
5-6 Servicing Electronic Circuitry.................................................................................................5-7
6-0 REPLACEMENT PARTS ......................................................................................................6-1
6-1 Matrix .....................................................................................................................................6-1
6-2 Circuit Board Replacement Policy .........................................................................................6-2
6-3 Replacement Parts ................................................................................................................6-2
a. Common Parts ................................................................................................................6-2
b. Photomultiplier Assembly 654062...................................................................................6-4
c. Converter Assembly 654070...........................................................................................6-5
d. Temperature Control Assembly 654068 .........................................................................6-6
7-0 RETURN OF MATERIAL ......................................................................................................7-1
7-1 return of material ...................................................................................................................7-1
7-2 customer service ...................................................................................................................7-1
7-3 Training..................................................................................................................................7-1
8-0 INDEX....................................................................................................................................8-1

Instruction Manual
748214-T
September 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Model 951C
LIST OF ILLUSTRATIONS
Figure 2-1. Power Supply Board Voltage Select Switches ...................................................... 2-2
Figure 2-2. Temperature Control Board ................................................................................... 2-2
Figure 2-3. Cable Gland........................................................................................................... 2-3
Figure 2-4. Rear View of Model 951C (cover removed) .......................................................... 2-4
Figure 2-5. Rear Panel Wiring Connections............................................................................. 2-4
Figure 3-1. Model 951C Controls, Indicators and Adjustments ............................................... 3-1
Figure 3-2. Signal Board .......................................................................................................... 3-2
Figure 3-3. Signal Board Test Points ....................................................................................... 3-2
Figure 3-4. Signal Board Diagnostic Jumpers ......................................................................... 3-2
Figure 3-5. Hi/Lo Range Select Jumper................................................................................... 3-3
Figure 3-6. PPM Range Select Switch..................................................................................... 3-3
Figure 3-7. Decimal Point Select Jumpers............................................................................... 3-3
Figure 3-8. Range 2 Selection Jumpers................................................................................... 3-3
Figure 3-9. Power Supply Board .............................................................................................. 3-5
Figure 4-1. Analyzer Signal Conditioning Circuit ..................................................................... 4-4
Figure 4-2. Analyzer Thermal System...................................................................................... 4-5
Figure 6-1. Major Assemblies of the Model 951C.................................................................... 6-3
Figure 6-2. Photomultiplier Housing Assembly ........................................................................ 6-4
Figure 6-3. Converter Assembly .............................................................................................. 6-5
Figure 6-4. Case Heater Temperature Control Assembly........................................................ 6-6
LIST OF TABLES
Table 3-1. Resistance of Converter Temperature Sensor vs. Temperature .....................................3-7
DRAWINGS (LOCATED IN REAR OF MANUAL)
654063 Installation Drawing
654090 Flow Diagram, Lo Range
654093 Flow Diagram, Hi Range
661246 Schematic Diagram, Signal/Control Board

Instruction Manual
748214-T
September 2002
iv Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C

Instruction Manual
748214-T
September 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-1
Model 951C
PREFACE
The purpose of this manual is to provide information concerning the components,
functions, installation and maintenance of the 951C NOXAnalyzer.
Some sections may describe equipment not used in your configuration. The user should
become thoroughly familiar with the operation of this module before operating it. Read
this instruction manual completely.
DEFINITIONS
The following definitions apply to DANGERS, WARNINGS, CAUTIONS and NOTES found throughout
this publication.
DANGER .
Highlights the presence of a hazard which will cause severe personal injury, death, or substantial
property damage if the warning is ignored.
WARNING .
Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not
strictly observed, could result in injury, death, or long-term health hazards of personnel.
CAUTION.
Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not
strictly observed, could result in damage to or destruction of equipment, or loss of effectiveness.
NOTE
Highlights an essential operating procedure,
condition or statement.

Instruction Manual
748214-T
September 2002
P-2 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C
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.
This instrument was shipped from factory set up to operate on 115 volt 50/60 Hz. For operation on
230 volt 50/60 Hz, refer to Section 2-3.
For safety and proper performance this instrument must be connected to a properly grounded
three-wire source of power.
WARNING
INTERNAL ULTRAVIOLET LIGHT HAZARD
Ultraviolet light from the ozone generator can cause permanent eye damage. Do not look directly at
the ultraviolet source in ozone generator. Use of ultraviolet filtering glasses is recommended.

Instruction Manual
748214-T
September 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-3
Model 951C
WARNING
TOXIC CHEMICAL HAZARD
This instrument 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 instrument 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 analyzer and avoid inhalation of the sample and
exhaust products transported within the analyzer. Avoid inhalation of the combined exhaust
products at the exhaust fitting.
Keep all tube fittings tight to avoid leaks. See Section 2-8 for Leak Test Procedure.
Connect rear exhaust outlet to outside vent by a 1/4 inch (6.3 mm) or larger stainless steel or Teflon
line. Check vent line and connections for leakage.
WARNING .
PARTS INTEGRITY
Tampering or unauthorized substitution of components may adversely affect safety of this product.
Use only factory documented components for repair.
WARNING.
HIGH PRESSURE GAS CYLINDERS
This instrument requires periodic calibration with a known standard gas. See Sections 2-5 and 3-3.
See also General Precautions for Handling and Storing High Pressure Gas Cylinders, page P-5.

Instruction Manual
748214-T
September 2002
P-4 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C
WARNING.
TOXIC AND OXIDIZING GAS HAZARD
The ozone generator lamp contains mercury. Lamp breakage could result in mercury exposure.
Mercury is highly toxic if absorbed through skin or ingested, or if vapors are inhaled.
HANDLE LAMP ASSEMBLY WITH EXTREME CARE
If 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 long capillary tube. Alternatively, 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 can be tightly capped. Label and
return to hazardous material reclamation center.
•Do not place in trash, incinerate or flush down sewer.
•Cover any fine droplets of mercury in non-accessible crevices with calcium polysulfide and
sulfur dust.
WARNING.
TOPPLING HAZARD
This instrument’s internal pullout chassis is equipped with a safety stop latch located on the left
side of the chassis.
When extracting the chassis, verify that the safety latch is in its proper (counter-clockwise)
orientation.
If access to the rear of the chassis is required, the safety stop may be overridden by lifting the
latch; however, further extraction must be done very carefully to insure the chassis does not fall
out of its enclosure.
If the instrument is located on top of a table or bench near the edge, and the chassis is extracted, it
must be supported to prevent toppling.
Failure to observe these precautions could result in personal injury and/or damage to the product.