Instruction Manual
748214-R
March 2002
Model 951C
NOx Analyzer
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 repre-
sentative 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 mainte-
nance of the product.
• Install your equipment as specified in the Installation Instructions of the appropriate In-
struction 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.
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 951C
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 – Lo Range.....................................................................................................1-2
1-4 Specifications – Hi Range .....................................................................................................1-3
Instruction Manual
748214-R
March 2002
TABLE OF CONTENTS
2.0 INSTALLATION ....................................................................................................................2-1
2-1 Unpacking..............................................................................................................................2-1
2-2 Location .................................................................................................................................2-1
2-3 Voltage Requirements...........................................................................................................2-1
2-4 Electrical Connections ...........................................................................................................2-1
a. Line Power Connections .................................................................................................2-1
b. Potentiometric Recorder Connections ............................................................................2-3
c. Current Recorder Connections .......................................................................................2-3
2-5 Gas Requirements.................................................................................................................2-4
a. Air (U.S.P. Breathing Grade) ..........................................................................................2-4
b. Span Gas ........................................................................................................................2-4
2-6 Sample Requirements ...........................................................................................................2-4
2-7 Gas Connections ...................................................................................................................2-4
2-8 Leak Test ...............................................................................................................................2-5
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 .................................................................................................................3-2
3-3 Calibration..............................................................................................................................3-5
a. Zero Calibration...............................................................................................................3-5
b. Upscale Calibration.........................................................................................................3-5
3-4 Routine Operation .................................................................................................................3-5
3-5 Converter Temperature Adjustment Procedure ....................................................................3-5
3-6 Measurement of Converter Efficiency ...................................................................................3-7
3-7 Recommended Calibration Frequency..................................................................................3-8
Rosemount Analytical Inc. A Division of Emerson Process Management Contents i
Instruction Manual
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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 Processing Electronics System ..................................................................................4-2
4-4 Analyzer Thermal System .....................................................................................................4-2
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 ..........................................................................................................5-3
a. Cleaning Sample Capillary..............................................................................................5-3
b. Ozone Restrictor Fitting ..................................................................................................5-3
5-3 Photomultiplier Tube/Reaction Chamber ..............................................................................5-4
a. Removal ..........................................................................................................................5-4
b. Cleaning Reaction Chamber...........................................................................................5-4
c. Photomultiplier Tube and Housing ..................................................................................5-5
d. Replacement of Photomultiplier Tube.............................................................................5-6
5-4 Ozone Generation System ....................................................................................................5-7
a. Lamp/Housing Removal..................................................................................................5-7
b. UV Lamp Replacement...................................................................................................5-7
c. Power Supply Removal...................................................................................................5-8
5-5 Converter Assembly ..............................................................................................................5-9
5-6 Servicing Electronic Circuitry.................................................................................................5-10
5-7 Leaks .....................................................................................................................................5-10
Model 951C
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
ii Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C
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) .......................................................... 2-3
Figure 3-1. Model 951C Controls, Indicators and Adjustments ............................................... 3-1
Figure 3-2. Signal Board .......................................................................................................... 3-3
Figure 3-3. Power Supply Board .............................................................................................. 3-4
Figure 4-1. Analyzer Signal Conditioning Circuit ..................................................................... 4-3
Figure 4-2. Analyzer Thermal System...................................................................................... 4-3
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
Instruction Manual
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March 2002
LIST OF ILLUSTRATIONS
LIST OF TABLES
Table 3-1. Resistance of Converter Temperature Sensor vs. Temperature........................... 3-6
DRAWINGS
654063 Installation Drawing
654090 Flow Diagram, Lo Range
654093 Flow Diagram, Hi Range
(LOCATED IN REAR OF MANUAL)
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Instruction Manual
748214-R
March 2002
Model 951C
iv Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
Model 951C
PREFACE
The purpose of this manual is to provide information concerning the components,
functions, installation and maintenance of the 951C NOx Analyzer.
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 .
748214-R
March 2002
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 Preface P-1
Instruction Manual
748214-R
March 2002
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.
P-2 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
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.
748214-R
March 2002
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.
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-3
Instruction Manual
748214-R
March 2002
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.
Model 951C
•
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.
P-4 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
748214-R
Model 951C
March 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 Preface P-5
Instruction Manual
9
6
748214-R
March 2002
DOCUMENTATION
The following 951C instruction materials are available. Contact Customer Service Center or the local representative to order.
748214 Instruction Manual (this document)
COMPLIANCES
This product satisfies all obligations of all relevant standards of the EMC framework in Australia and New
Zealand.
Model 951C
N
P-6 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C
CONDENSED STARTUP AND CALIBRATION PROCEDURE
Instruction Manual
748214-R
March 2002
The following summarized instructions on
startup and calibration are intended for operators already familiar with the analyzer.
For initial startup, refer to detailed instructions
provided in Section 3.
1. Set slider switch on the Signal Board to 250
ppm (see Figure 3-2).
2. Apply power to the analyzer. The analyzer
will now require approximately one to two
hours for temperature equilibrium before
being ready for calibration.
3. Verify that the pressure regulator on the cylinder of zero gas (nitrogen or air) or sample
gas is set for supply pressure of 10 to 17
psig.
4. Verify that the pressure regulator on the cylinder of air (ozonator supply) is set for supply
pressure of 20 to 25 psig.
5. Establish correct pressure of sample gas:
a. Supply sample gas to rear-panel SAM-
PLE inlet at 10 to 17 psig (normally 15
psig).
b. Adjust SAMPLE Back Pressure Regula-
tor so that SAMPLE Pressure Gauge indicates the value appropriate to the
desired operating range (normal operating pressure is 3 to 5 psig). See Figure
3-1.
6. Establish correct pressure of zero gas:
a. Supply zero gas to rear panel SAMPLE
inlet and set to 15 psig.
b. Note reading on SAMPLE Pressure
Gauge. It should be the same as in Step
5. b. If not, adjust output pressure
regulator on the zero gas cylinder as required.
a. Supply upscale standard gas to rear
panel SAMPLE inlet.
b. Note reading on SAMPLE Pressure
Gauge. It should be the same as in
Step 6. b. If not, adjust output
regulator on cylinder of upscale
standard gas as required.
NOTE
Supply pressure for sample, upscale
standard gas and zero air must be the
same. If not, the readout will be in error.
8. Zero Calibration:
a. Set PPM RANGE Switch for range to
be used for sample analysis. Set
SPAN Control at normal operating
setting, if known, or at about midrange if normal setting is not known.
b. Supply zero gas to rear panel SAM-
PLE inlet.
c. Adjust ZERO Control for reading of
zero on meter or recorder.
9. Upscale Calibration:
a. Set PPM RANGE Switch at setting
appropriate to the particular span
gas.
b. Supply upscale standard gas of ac-
curately known NOx content to rear
panel SAMPLE inlet.
c. Adjust SPAN Control so that reading
on meter or recorder is equal to the
know parts-per-million concentration
of NOx in the span gas.
NOTE
It is the responsibility of the user to
measure efficiency of the NO
converter during initial startup, and
thereafter at intervals appropriate to the
application, normally once a month.
2
-to-NO
7. Establish correct pressure of upscale standard gas:
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-7
Instruction Manual
748214-R
March 2002
Model 951C
P-8 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C
Instruction Manual
748214-R
March 2002
SECTION 1
DESCRIPTION AND SPECIFICATIONS
1-1 OVERVIEW
The Model 951C NOx Analyzer is designed to
measure NOx using one of two sets of ranges
designated as Hi or Lo. The Hi Range set consists of spans with ranges of 0-100, 0-250,
0-1000, and 0-2500 ppm NOx. The Lo Range
set consists of spans with ranges of 0-10, 0-25,
0-100, and 0-250 ppm NOx.
The NOx analyzer continuously analyzes a
flowing gas sample for NOx [nitric oxide (NO)
plus nitrogen dioxide (NO
concentrations is continuously reported as NOx.
The analyzer is based on the chemiluminescence method of NO detection. The sample is
continuously passed through a heated bed of
vitreous carbon, in which NO
Any NO initially present in the sample passes
through the converter unchanged, and any NO
is converted to an approximately equivalent
(95%) amount of NO.
The NO is quantitatively converted to NO
gas-phase oxidation with molecular ozone produced within the analyzer from air supplied by
an external cylinder. During this reaction, approximately 10% of the NO
vated to an electronically excited state, followed
by immediate decay to the non-excited state,
accompanied by emission of photons. These
photons are detected by a photomultiplier tube,
which in turn generates a DC current proportional to the concentration of NOx in the sample
stream. The current is then amplified and used
to drive a front panel display and to provide potentiometric and isolated current outputs.
2
)]. The sum of the
is reduced to NO.
2
molecules are ele-
2
2 by
The case heater assembly of the Model
951C maintains the internal temperature at
approximately 50
1-2 TYPICAL APPLICATIONS
The Model 951C Analyzer has specific applications in the following areas:
• Oxides of nitrogen (NOx) emis-
sions from the combustion of
fossil fuels in:
• Vehicle engine ex-
• Incinerators
• Boilers
2
• Nitric acid plant emissions
• Ammonia in pollution control
• Nitric oxide emissions from de-
• Gas appliances
• Turbine exhaust
equipment (with converter)
caying organic material (i.e.,
landfills).
haust
o
C (122oF).
To minimize system response time, an internal
sample-bypass feature provides high-velocity
sample flow through the analyzer.
The display blanks when the analyzer is 10% or
more over-range. Selecting a less sensitive
(higher) range restores the display function.
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-1
Instruction Manual
748214-R
March 2002
1-3 SPECIFICATIONS – LO RANGE
Ranges .......................................... 0 to 10, 0 to 25, 0 to 100, 0 to 250 ppm NOx
Repeatability.................................. within 0.1 ppm or ±1% of fullscale, whichever is greater
Zero/Span Drift .............................. less than ±0.1 ppm or ±1% of fullscale, whichever is greater, in 24
Response Time
(Electronic + Flow)
Sensitivity ...................................... less than 0.1 ppm or 1% of fullscale, whichever is greater
Detector Operating Pressure......... atmospheric
Total Sample Flow Rate ................ 1 Liter per minute at 20 psig
Sample Pressure........................... 138 kPa (20 psig)
Ozone Generator Gas................... U.S.P. breathing-grade air
Ambient Temperature Range........ 4 to 40°C (40 to 104°F)
Analog Output
Potentiometric........................ 0 to +5 VDC, 2000 ohm minimum load
Isolated Current ..................... Field-selectable 0 to 20 or 4 to 20 mA, 700 ohm max load
Display ................................... Digital, 4-1/2 digit LCD, readout in engineering units, back-lighted
Power Requirements..................... 115/230 VAC ±10%, 50/60 ±3 Hz, 570 W maximum
Enclosure....................................... General purpose for installation in weather-protected areas
Dimensions.................................... 8.7 in. x 19.0 x 19.0 in. (H x W x D)
Weight ........................................... 22.2 kg (49 lbs) approximate
................ 90% of fullscale in less than 1 minute
Model 951C
hours at constant temperature
less than ±0.2 ppm or ±2% of fullscale, whichever is greater, over
any 10°C interval from 4 to 40°C (for rate change of 10°C or less
per hour)
22.0 cm x 48.3 cm x 48.3 cm (H x W x D)
1-2 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C
1-4 SPECIFICATIONS – HI RANGE
Ranges .......................................... 0 to 100, 0 to 250, 0 to 1000, 0 to 2500 ppm NOx
Repeatability.................................. within 0.1 ppm or ±1% of fullscale, whichever is greater
Zero/Span Drift .............................. less than ±1.0 ppm or ±1% of fullscale, whichever is greater, in 24
Response Time
(Electronic + Flow)................. 90% of fullscale in less than 1 minute
Sensitivity ...................................... less than 0.1 ppm or 1% of fullscale, whichever is greater
Detector Operating Pressure......... atmospheric
Total Sample Flow Rate ................ 1 Liter per minute at 20 psig
Sample Pressure........................... 138 kPa (20 psig)
Ozone Generator Gas................... U.S.P. breathing-grade air
Ambient Temperature Range........ 4 to 40°C (40 to 104°F)
Analog Output
Potentiometric........................ 0 to +5 VDC, 2000 ohm minimum load
Isolated Current ..................... Field-selectable 0 to 20 or 4 to 20 mA, 700 ohm max load
Display ................................... Digital, 4-1/2 digit LCD, readout in engineering units, back-lighted
Power Requirements..................... 115/230 VAC ±10%, 50/60 ±3 Hz, 570 W maximum
Enclosure....................................... General purpose for installation in weather-protected areas
Dimensions.................................... 8.7 in. x 19.0 x 19.0 in. (H x W x D)
Weight ........................................... 22.2 kg (49 lbs) approximate
Instruction Manual
748214-R
March 2002
hours at constant temperature
less than ±2.0 ppm or ±2% of fullscale, whichever is greater, over
any 10°C interval from 4 to 40°C (for rate change of 10°C or less
per hour)
22.0 cm x 48.3 cm x 48.3 cm (H x W x D)
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-3
Instruction Manual
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March 2002
Model 951C
1-4 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
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