400A Hydrocarbon Analyzer-Rev M (Cat # 194106 / Serial # beginning with 2000001)
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Loading...Rosemount 400A Hydrocarbon Analyzer-Rev M (Cat # 194106 / Serial # beginning with 2000001) Manuals & Guides
Instruction Manual
748262-M
May 2002
Model 400A
Hydrocarbon Analyzer
NOTE:
This manual is applicable to Model 400A, Catalog Number 194106 with Serial Numbers
beginning with 2000001.
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.
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 400A
PREFACE...........................................................................................................................................P-1
Definitions ...........................................................................................................................................P-1
Safety Summary .................................................................................................................................P-2
General Precautions For Handling And Storing High Pressure Gas Cylinders .................................P-4
Documentation....................................................................................................................................P-5
1-0 DESCRIPTION AND SPECIFICATIONS..............................................................................1-1
1-1 Description.............................................................................................................................1-1
1-2 Analyzer Mounting Options ...................................................................................................1-1
1-3 Fuel Gas Options...................................................................................................................1-1
1-4 Output Options ......................................................................................................................1-2
a. Isolated Remote Range Change and Identification ........................................................1-3
b. Range Trim Option..........................................................................................................1-3
1-5 Sample Pump Option ............................................................................................................1-3
1-6 Gas Safety Features..............................................................................................................1-3
1-7 Specifications ........................................................................................................................1-4
Instruction Manual
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May 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 Fuel and Air Requirements....................................................................................................2-2
a. Fuel Gas..........................................................................................................................2-2
b. Air....................................................................................................................................2-2
2-5 Sample Handling ...................................................................................................................2-2
2-6 Gas Connection.....................................................................................................................2-3
2-7 Leak Check............................................................................................................................2-4
2-8 Electrical Connections ...........................................................................................................2-4
a. Line Power Connection...................................................................................................2-5
b. Voltage Output Selection and Cable Connections for Recorder ....................................2-5
c. Voltage to Current Output Board (Optional) ...................................................................2-5
d. Auxiliary Contacts ...........................................................................................................2-5
e. Remote Range Control and Indication............................................................................2-5
f. Sample Pump Accessory................................................................................................2-7
3-0 OPERATION .........................................................................................................................3-1
3-1 Initial Startup and Calibration ................................................................................................3-1
a. Selection of Calibration Method and Associated Standard Gas(es)...............................3-3
3-2 Calibration Procedure............................................................................................................3-4
3-3 Range Switch ........................................................................................................................3-5
3-4 Range Trim Option ................................................................................................................3-6
3-5 Routine Operation .................................................................................................................3-8
3-6 Recommended Calibration Frequency..................................................................................3-8
3-7 Shutdown...............................................................................................................................3-8
3-8 Obtaining Maximum Sensitivity .............................................................................................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 Principles of Operation ..........................................................................................................4-1
4-2 Burner ....................................................................................................................................4-1
a. Response to Different Hydrocarbons..............................................................................4-2
4-3 Analyzer Flow System ...........................................................................................................4-3
4-4 Preamplifier Board.................................................................................................................4-3
4-5 Main Electronics Board..........................................................................................................4-4
a. Post Amplifier ..................................................................................................................4-4
b. Digital Display .................................................................................................................4-4
c. Span ................................................................................................................................4-4
d. Range Trim (Option) .......................................................................................................4-4
e. Remote Range Control ...................................................................................................4-4
4-6 Heater/Fan Temperature Assembly ......................................................................................4-6
4-7 Ignition Circuit........................................................................................................................4-6
4-8 System Power Supplies.........................................................................................................4-6
4-9 Flame-Out Board ...................................................................................................................4-6
5-0 SERVICE AND TROUBLESHOOTING ................................................................................5-1
5-1 System Checkout ..................................................................................................................5-1
a. Amplifier Zero Adjustment...............................................................................................5-1
b. Zero Current Adjustment.................................................................................................5-1
c. Electrical Leakage Check ...............................................................................................5-1
d. Flame Ignition..................................................................................................................5-1
e. Noise Check....................................................................................................................5-1
f. Overall Sensitivity Check ................................................................................................5-1
g. Stability Check ................................................................................................................5-2
5-2 Servicing Flow System and Burner .......................................................................................5-2
a. Burner Disassembly and Cleaning..................................................................................5-2
b. Thermistor .......................................................................................................................5-3
c. Fuel and Air Restrictors ..................................................................................................5-3
d. Sample Capillary .............................................................................................................5-4
5-3 Troubleshooting.....................................................................................................................5-4
Model 400A
6-0 REPLACEMENT PARTS ......................................................................................................6-1
6-1 Circuit Board Replacement Policy .........................................................................................6-1
6-2 Recommended Replacement Parts List................................................................................6-1
6-3 Matrix .....................................................................................................................................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
ii Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Figure 2-1. Range Input-Output Board..................................................................................... 2-6
Figure 2-2. Range Control and Output Connections................................................................ 2-7
Figure 3-1. Power Switch Location..............................................................................................3-2
Figure 3-2. Typical Curves of Downscale Response vs. Time for Various Hydrocarbons.......... 3-3
Figure 3-3. Example 1 Display .................................................................................................... 3-6
Figure 3-4. Example 2 Display .................................................................................................... 3-6
Figure 3-5. Example 3 Display .................................................................................................... 3-6
Figure 3-6. Range Trim Option Schematic.................................................................................. 3-8
Figure 3-7. Typical Curve of Analyzer Response vs. Pressure Setting on Sample Pressure .... 3-9
Figure 3-8. Typical Curves of Analyzer Response vs. Pressure Setting on Fuel Pressure
Figure 3-9. Typical Curves of Analyzer Response vs. Pressure Setting on Air Pressure
Figure 4-1. Flame Ionization Detection Theory ........................................................................... 4-1
Figure 5-1. Effect of Analyzer Temperature on Background Signal – Typical Curve.................. 5-2
Instruction Manual
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May 2002
LIST OF ILLUSTRATIONS
Regulator ............................................................................................................... 3-9
Regulator ............................................................................................................. 3-10
LIST OF TABLES
Table 1-1. Fuel Gas vs. Analyzer Characteristics................................................................... 1-3
Table 2-1. Range Control........................................................................................................ 2-6
Table 3-1. Internal Pressure Regulators Settings................................................................... 3-1
Table 3-2. Range Switch Settings........................................................................................... 3-5
Table 4-1. Approximate Effective Carbon Numbers ............................................................... 4-2
Table 4-2. Input Sensitivities...................................................................................................4-4
Table 4-3. Fullscale Sensitivity ............................................................................................... 4-4
Table 5-1. Troubleshooting ..................................................................................................... 5-5
LIST OF DRAWINGS
(LOCATED IN REAR OF MANUAL)
620424 Schematic Diagram, Preamplifier
620429 Schematic Diagram, Main Electronics
620434 Schematic Diagram, Isolated V/I
622883 Flow Diagram, Model 400A
623190 Burner Parts List
624003 Schematic Diagram, Temperature Control Board
654328 Installation Drawing, Model 400A
654905 Schematic Diagram, Relay Board
654910 Schematic Diagram, Relay Board
654913 Assembly Instructions, I/O Board
654998 Assembly Instructions, Relay Board
655354 Pictorial Wiring Diagram, Model 400A
657546 Schematic Diagram, Flame-Out Board
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Instruction Manual
748262-M
May 2002
Model 400A
iv Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
Model 400A
PREFACE
The purpose of this manual is to provide information concerning the components,
functions, installation and maintenance of the 400A.
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 .
748262-M
May 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
748262-M
May 2002
Model 400A
SAFETY SUMMARY
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 Model 400A Hydrocarbon Analyzer should
be thoroughly familiar with and strictly follow the instructions in this manual. Save these
instructions.
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.
WARNING.
PARTS INTEGRITY
Tampering or unauthorized substitution of components may adversely affect safety of this product.
Use only factory documented components for repair.
WARNING.
POSSIBLE EXPLOSION HAZARD
Ensure that all gas connections are made as labeled and are leak free. Improper gas connections
could result in explosion or death.
P-2 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
Model 400A
WARNING .
POSSIBLE EXPLOSION HAZARD
Do not apply power to analyzer or ignite burner until all leak checks have been performed and until
the environment of the analyzer has been determined to be non-hazardous. See Section 2-7, page
2-4 for leak check procedure.
This instrument uses a fuel containment hydrogen. The instrument is designed to protect against
the formation of an explosive gas mixture within the enclosure. It must NOT be operated if the internal ventilation fan is not functioning. Do NOT operate without factory installed fuel flow restrictor in place.
Check the fuel supply and containment system for leaks, both inside and outside the analyzer,
upon installation, before initial startup, during routine maintenance, or any time the integrity of the
fuel containment system is broken, to assure that the system is leak-tight. Refer to Leak Check
Procedure, Section 2-7, page 2-4.
The enclosure is protected by a continuous dilution air purge system, as recommended in IEC*
Publication 79-2 (Third Edition - 1983). Do not operate unit unless the continuous dilution purge
system is properly installed and functioning. Upon startup or loss of pressurization, purge for fifteen minutes before restoring power unless the internal atmosphere is known to be non-explosive.
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May 2002
CAUTION .
HIGH PRESSURE GAS CYLINDERS
For safety and proper performance this instrument must be connected to a properly grounded
three-wire source of power.
This analyzer requires periodic calibration with known zero and standard gases. See General Precautions for Handling and Storing High Pressure Cylinders, page P-4 .
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.
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-3
Instruction Manual
748262-M
May 2002
Model 400A
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
never be permitted to come in contact with any part of a compressed gas cylinder.
8. Do not place cylinders where they may become part of an electric circuit. When electric arc welding,
precautions must be taken to prevent striking an arc against the cylinder.
°
F (52°C). A flame should
P-4 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
Model 400A
DOCUMENTATION
The following Model 400A instruction materials are available. Contact Customer Service Center or the
local representative to order.
748262 Instruction Manual (this document)
748262-M
May 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-5
Instruction Manual
748262-M
May 2002
Model 400A
P-6 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
748262-M
May 2002
SECTION 1
DESCRIPTION AND SPECIFICATIONS
1-1 DESCRIPTION
The Model 400A Hydrocarbon Analyzer
automatically and continuously measures the
concentration of hydrocarbons in a gas
stream. Typical applications include monitoring atmospheric air for low-level hydrocarbon
contaminants and determining the hydrocarbon content of exhaust emissions from internal combustion engines.
The analyzer utilizes the flame ionization
method of detection. The sensor is a burner in
which a regulated flow of sample gas passes
through a flame sustained by regulated flows
of a fuel gas and air. Within the flame, the hydrocarbon components of the sample stream
undergo a complex ionization that produces
electrons and positive ions. Polarized electrodes collect these ions, causing current to
flow through an electronic measuring circuit.
The ionization current is proportional to the
rate at which carbon atoms enter the burner,
and is therefore a measure of the concentration of hydrocarbons in the original sample.
The analyzer provides readout on a
front-panel digital display and a selectable
output for an accessory recorder.
descriptions of the principal standard and optional features.
1-2 ANALYZER MOUNTING OPTIONS
WARNING
INSTALLATION
For safety, the analyzer should be installed
in a non-confined, ventilated space.
The standard analyzer is housed in a case
designed for bench-top use, or if desired, the
analyzer may be mounted in a cabinet or rack
using RETMA spaced mounting holes. Outline
dimensions are shown on DWG 654328.
1-3 FUEL GAS OPTIONS
For burner fuel gas, the standard analyzer requires 40% hydrogen/60% nitrogen or helium.
Through installation of the optional 400A hydrogen fuel kit (P/N 622576), the analyzer
may be converted to use 100% hydrogen.
This kit may be ordered as a factory installed
option or supplied as an option for installation
by the user.
To ensure stable, drift-free operation, particularly in high-sensitivity applications, an internal
temperature controller maintains the analyzer
interior at a constant 50°C. This feature minimizes temperature-dependent variations in (a)
electronic current-measuring circuitry, and (b)
adsorption/desorption equilibrium of background hydrocarbons within the internal flow
system.
To minimize system response time, an internal sample-bypass feature provides
high-velocity sample flow through the analyzer.
The Model 400A may be equipped with various optional features in addition to, or instead
of, the standard features of the basic instrument. The following paragraphs provide brief
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-1
The preferred type of fuel depends on the
particular application and the characteristics
of the sample gas:
For measuring low-level hydrocarbons in ambient air, or in other sample gas with relatively
constant oxygen content, 100% hydrogen is
preferable. It provides the highest obtainable
sensitivity and the maximum stability. Zero
drift caused by ambient temperature variations of the fuel cylinder is somewhat lower for
100% hydrogen than for mixed fuel. (With either fuel, it is desirable to maintain cylinder
temperature constant.)
For monitoring vehicular exhaust emissions,
or other sample gas with varying oxygen
content, mixed fuel is preferable; and a hydrogen/helium mixture is more desirable than
Instruction Manual
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May 2002
Model 400A
a hydrogen/nitrogen mixture. With this type of
sample, the use of mixed fuel gas minimizes
the error introduced by oxygen synergism. An
effective way to reduce the effect of internal
oxygen is to dilute it with an inert gas. This
might be accomplished by a constant dilution
of sample and calibration gases ahead of the
burner but it is simpler and more accurate to
provide that diluent in the form of premixed
fuel. Both nitrogen and helium have been
used as a diluent, but helium has proven to be
most effective in improving the equality of response to the various species of hydrocarbons.
As indicated earlier the flame output signal is
optimum when the ratio of hydrogen flow to
inert flow is about 40/60; therefore, this is the
chosen composition for hydrogen/helium premixed fuel.
The sample flow is kept low to maximize the
dilution effect while still providing adequate
sensitivity. The burner air flow is normally
about four times the fuel flow, and changes
have little effect on signal strength. For a
given sample flow, the signal can be optimized by adjusting the fuel flow rate.
Typical flow rates with premixed fuel:
Fuel 100 cc/min
Sample 7 cc/min
Air 400 cc/min
It is worth noting that with a 40/60 premixed
fuel, the above flows amount to 40 cc (8%)
hydrogen, 67 cc (13%) inert plus sample and
400 cc (79%) air, which compare closely to
the 30 cc (8%) hydrogen, 45 cc (12%) inert/sample and 300 cc (80%) air given earlier
for straight hydrogen fuel.
Since the sample flow in the case of mixed
fuel operation is only about one-sixth of that
with straight hydrogen fuel, it is clear that
higher sensitivity is obtained with straight hydrogen fuel operation. However, in any application where the sample contains more than
one species of hydrocarbon and/or a varying
concentration of oxygen, the mixed fuel operation should be used.
The mixed fuel is recommended, not only for
sample containing variable concentrations of
oxygen, but also for two specific pure gas applications. The first is the case of pure hydrogen samples. The other is the case of pure
oxygen samples. If straight oxygen samples
are used with straight hydrogen fuel, the mixture entering the burner is essentially 40%
H
/60% O2, which tends to produce an unsta-
2
ble signal. The mixed fuel works better. Note
that the choice of fuel determines certain
analyzer characteristics, as tabulated in Table
1-1.
1-4 OUTPUT OPTIONS
The standard analyzer provides (a) direct
digital readout in percent of full scale on a
front-panel display calibrated linearly from 0 to
100 %, (b) a selectable buffered output of 0 to
0.1 VDC, 1 VDC or 5 VDC suitable for a recorder and (c) a 0 to 5 VDC un-buttered accessory output.
An isolated output of 4 to 20 mA DC (max.
load resistance 700 ohms) is obtainable
through use of the optional current output
board, P/N 620433, installed either during
factory assembly or as a subsequent addition.
When installed, this board uses the accessory
0 to 5 VDC output as an input signal and replaces this function at the output terminals.
1-2 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
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May 2002
ANALYZER CHARACTERISTICS 100% H2
Fullscale Sensitivity
Fuel Consumption 35 to 40 cc/min 75 to 80 cc/min
Operating Range for SAMPLE Pressure Regulator
Table 1-1. Fuel Gas vs. Analyzer Characteristics
a. Isolated Remote Range Change and
Identification
This option provides a 24 VDC operation
of remote range and identification as well
as providing terminals for flame out indication.
b. Range Trim Option
This option provides individual potentiometers for each range to allow adjustment of individual differences in bottled
gas.
1-5 SAMPLE PUMP OPTION
To provide the required sample flow, the
sample gas must be under adequate pressure
when applied to the analyzer inlet. Refer to
Section 2-4, page 2-2. To permit analysis of
gases at atmospheric or sub-atmospheric
pressure, the analyzer may be shipped with a
sample pump accessory, P/N 621062.
Adjustable from 1 ppm CH4 to 2%
CH4
4 to 5 psig (27 to 34.5 kPa)
restrictor, ventilation holes in the enclosure
and an internal circulation fan serve to dilute
and dissipate the hydrogen fuel for a worst
case leak to a safety factor below 25% of the
LEL of hydrogen. The design basis for this
system presumes 100% hydrogen fuel at 50
psig inlet pressure. 40% hydrogen fuel and
lower inlet pressure serve to further reduce
hydrogen concentration in the event of a leak.
In reality, an open fitting leak would never occur. As a leak developed the burner would
eventually be starved of fuel and flame-out
would occur at a leak equivalent of a loss of
about 20 psig fuel pressure, thus actuating the
fuel shut-off solenoid valve system.
If the sample is flammable, accessory kit P/N
624080, must be utilized. This kit provides a
restrictor to limit sample flow and a solenoid
valve to shut-off sample in the event of burner
flame-out. The design basis for this kit presumes a maximum sample flow rate of 470
cc/min and a sample with LEL not below that
of hydrogen (4% v/v in air).
40% H2/60% N2 or 40%
H2/He
Adjustable from 4 ppm
CH4 to 10% CH4
1.5 to 5 psig
(10.3 to 34.5 kPa)
1-6 GAS SAFETY FEATURES
The Model 400A is designed to provide a high
degree of operational safety. In all analyzers,
a front-panel LED indicates that the burner
flame is lit. In addition, fuel gas is automatically shut off when a flame-out condition occurs.
All tubing ahead of the burner is rigid metallic
tubing made up with ferrule/nut type compression fittings. However, should there be an internal fuel leak, an inlet fuel flow limiting
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-3
POSSIBLE EXPLOSION HAZARD
Protection against explosion depends
upon special fuel flow limiting restrictor in
fuel inlet fitting. Do not remove fuel inlet
restrictor. Replace only with factory supplied fitting.
WARNING
Instruction Manual
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1-7 SPECIFICATIONS
Power Requirements..................... 115 VAC ±10%, 50/60 ±3 Hz, 250 W
Operating Temperature ................. 32°F to 110°F (0°C to 43°C)
Case Temperature ........................ Controlled at 122°F (50°C)
Ambient Humidity .......................... 95% relative humidity, but not in excess of 34°C wet bulb
Dimensions.................................... 8.75 in (22.2 cm) H
Weight ........................................... 22 lbs (10 kg)
Repeatability.................................. 1% of fullscale for successive identical samples
Response Time ............................. 90% of fullscale in 0.6 seconds with sample bypass flow at 3
Analyzer Fullscale Sensitivity
Standard ............................... Adjustable from 4 ppm CH4 to 1% CH4. (Adjustable from 100 ppm
Equipped with 100%
Hydrogen Fuel Assembly ...... Adjustable from 1 ppm CH4 to 0.25% CH4
Analyzer Fuel Gas Requirements
Standard Analyzer ................. 75 to 80 cc/min premixed fuel consisting of 40% hydrogen and 60%
Equipped with 100%
Hydrogen Fuel Assembly ...... 35 to 40 cc/min of clean, zero grade hydrogen (THC <0.5 ppm) at
Sample Gas Requirements
Non-Flammable Samples ...... 0.35 to 3.0 liters/minute at 5 to 10 psig (34 to 69 kPa)
Flammable Samples.............. 470 cc/minute maximum for safety1
Burner Air Requirements............... 350 to 400 cc/minute of zero grade (THC <1 ppm) air, supplied at
Sample Bypass Flow..................... 0.3 to 3.0 liters/minute
Stability .......................................... Electronic stability at maximum sensitivity is 1% of fullscale
Range ............................................ Eight ranges: 1, 2.5, 10, 25, 100, 250, 1000 and REMOTE.
Model 400A
temperature.
18.75 in. (47.6 cm) W
15.88 in. (39.7 cm) D
Recommended panel cutout is 17.75 in. X 8 25 in. (45.1 cm x 21.0
cm).
May be mounted in standard 19 inch rack.
liters/minute
CH4 to 10% CH4 using high-range capillary.)
nitrogen or helium (THC <0.5 ppm) supplied at 45 to 50 psig (309
to 344 kPa) at instrument
45 to 50 psig (309 to 344 kPa) at instrument
25 to 50 psig (172 to 344 kPa)
throughout ambient temperature range of 32°F to 110°F (0°C to
43°C). Built-in temperature controller minimizes effect of ambient
temperature variations on internal flow and electronic systems.
In addition SPAN control provides continuously variable adjustment
within a dynamic range of 4:1
1
Safety design basis presumes flammable sample having LEL not less than that of hydrogen (4% v/v in air).
1-4 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Output............................................ 1) 0 to 5 VDC, 0 to 1 VDC, 0 to 0.1 VDC fully buffered - standard
Safety Features ............................. Flame-on indication and automatic flame-out fuel shutoff is
Contacts ........................................ Form A contact operates in parallel with flame-out fuel shut-off
Temperature Control ..................... Setpoint maintained at 122°F (50°C)
Data Display .................................. 3-1/2 digit LED, characters 0.52 inches high, range 0000 to 1999
Range Display ............................... 1 digit LED, character 0.52 inches high (1 to 7 normal ranges, 0 to
Remote Range Control.................. Standard, fully isolated range control and range ID is optional
Instruction Manual
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May 2002
(for 0 to 100.0%).
2) 4 to 20 mA isolated voltage to current - optional (maximum load
resistance 700 ohms)
3) 0 to 5 VDC accessory output un-buffered - standard (for 0 to
100.0%) available when current option is not used.
standard.
All metal tubing with ferrule/nut compression fittings to minimize
potential fuel leaks.
Self-ventilated system maintains internal atmosphere below 25% of
LEL for worst case internal leakage.
solenoid contact rating (24 VDC at 1 A) for sample shut-off by use
of factory ordered kit (PN 624080) if sample is flammable
(hydrogen).
remote control)
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-5
Instruction Manual
748262-M
May 2002
Model 400A
1-6 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
748262-M
May 2002
SECTION 2
INSTALLATION
2-1 UNPACKING
Carefully examine the shipping carton and
contents for signs of damage. Immediately
notify the shipping carrier if the carton or its
contents are damaged. Retain the carton and
packing materials until the instrument is operational.
2-2 LOCATION
Install analyzer in a clean area, not subject to
excessive vibration or extreme temperature
variations. Preferably, the analyzer should be
mounted near the sample stream, to minimize
sample-transport time.
WARNING
INSTALLATION RESTRICTIONS
For safety, the analyzer should be installed
in a non-confined, ventilated space. Do
not block any of the vent holes at the top
of each side panel of the instrument as
they are part of the safety system.
A thermostatically controlled heating circuit
holds internal temperature of the analyzer to
the correct operating temperature for ambient
temperatures in the range 32°F to 110°F (0°C
to 43°C).
2-3 VOLTAGE REQUIREMENTS
WARNING
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.
This instrument was shipped from the factory
configured to operate on 115 VAC, 50/60 Hz
electric power. Verify that the power source
conforms to the requirements of the individual
instrument, as noted on the name-rating plate.
NOTE:
230 VAC operation requires an accessory
transformer mounted external to the instrument. If external 230 VAC power is
provided, do not change the switch setting
on the Temperature Control Board, which
is factory-selected for 115 VAC. A 230 VAC
switch setting will cause the case temperature controller to malfunction.
The cylinders of fuel, air, and calibration
gas(es) should be located in an area of relatively constant ambient temperature.
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-1
Instruction Manual
748262-M
May 2002
Model 400A
2-4 FUEL AND AIR REQUIREMENTS
WARNING
INSTALLATION RESTRICTIONS
Fuel, air and calibration gas cylinders are
under pressure. Mishandling of gas cylinders could result in death, injury or property damage. Handle and store cylinders
with extreme caution and in accordance
with manufacturer's instructions. Refer to
General Precautions for Handling and
Storing Gas Cylinders, page P-4.
During normal operation, the analyzer uses
fuel and air to maintain the burner flame. Criteria for selection of these gases are given in
Sections 2-4a (page 2-2) and 2-4b (page 2-2).
In addition, the analyzer requires suitable
standard gas(es) for calibration. Refer to Section 3-1a (page 3-3).
Each gas used should be supplied from a tank
or cylinder equipped with a clean, hydrocarbon-free, two-stage regulator. In addition, a
shutoff valve is desirable. Install the gas cylinders in an area of relatively constant ambient
temperature.
a. Fuel Gas
NOTE:
Always assure the sample flow is present when using the 100% hydrogen
fuel option. Absence of sample flow
can result in burning of detector tip
when using 100% hydrogen.
b. Air
Burner air should also be relatively free of
hydrocarbons in order to assure a low
background signal. Several grades of air
are supplied by various gas vendors for
this use. A maximum total hydrocarbon
content of less than 1 ppm (THC < used
as a zero standard).
An alternate source of pure air for burner
and zero gas can be provided by a diaphragm pump and heated palladium
catalyst which effectively removes moderate amounts of both hydrocarbons and
carbon monoxide from normal ambient air
on a continuous basis.
2-5 SAMPLE HANDLING
CAUTION
BYPASS GAUGE PROTECTION
The standard analyzer is equipped to use
only mixed fuel, i.e. 40% hydrogen/60%
nitrogen or helium. Such blends are supplied by many gas vendors specifically for
this use, with a guaranteed maximum total hydrocarbon content of 0.5 ppm,
measured as methane (THC < 0.5 ppm).
This specification should be used when
buying such mixtures.
When the analyzer is equipped with the
optional hydrogen fuel kit, P/N 622576,
100% hydrogen fuel is to be used. This is
also supplied by many gas vendors specifically for this use, with the same guaranteed total hydrocarbon content (THC <
0.5 ppm) which, again, should be specified when buying the gas.
2-2 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
When applying sample pressures greater
than 5 psig, insure that the bypass regulator is fully open to protect the bypass
gauge.
Operating range for the internal sample pressure regulator is 4 to 5 psig (28 to 35 kPa) for
an analyzer using 100% hydrogen fuel, and
1.5 to 5 psig (10 to 35 kPa) for an analyzer
using mixed fuel. With either fuel, sample and
calibration gas(es) must be supplied to the
sample inlet at a pressure slightly, but not excessively higher than the desired setting on
the internal sample pressure regulator. The
criterion for correct supply pressure is that the
gas flow discharged from the by-pass outlet
must be between 0.5 and 3.0 liters/minute to
operate within the control range of the sample
pressure regulator, and preferably should be
between 2 and 3 liters/minute to minimize
system response time.
Model 400A
Instruction Manual
748262-M
May 2002
Note that use of excessive bypass flow will
not only cause the sample pressure regulator
to operate outside its control range, but will
also result in rapid depletion of sample and
standard gases.
If the analyzer is equipped with the accessory
400A sample pump, P/N 621062, the acceptable pressure range at the pump inlet is approximately -1 to +2.5 psig (7 to 17 kPa). If
the pump is used, it will automatically provide
a sample bypass flow within the correct range.
If the analyzer is not equipped with sample
pump, adjustment of the bypass flow is obtainable by inserting an external flow controller or throttle valve into the external sample
line, upstream from the sample inlet. Flow
may be measured by connecting a flowmeter
to the by-pass outlet.
WARNING
POSSIBLE EXPLOSION HAZARD
In the event that flammable sample is to be
introduced into this analyzer, it must be
equipped with accessory kit PN 624080,
which restricts sample flow and provides
automatic sample shutoff in the event of
burner flameout. DO NOT OPERATE
WITHOUT SAMPLE FLOW RESTRICTOR IN
PLACE. The sample containment system
should also be thoroughly leak checked.
This kit is designed considering application on hydrogen sample (LEL=4% v/v).
The instrument must not be used on a
sample having a LEL less than 4% in air.
WARNING
POSSIBLE EXPLOSION HAZARD
Do not apply power to analyzer or ignite
burner until all leak checks have been performed and until the environment of the
analyzer has been determined to be nonhazardous. See Section 2-7 (page 2-4) for
leak check procedure.
This analyzer has been designed for use in
environments that do not contain combustible or explosive materials.
This analyzer uses a fuel containing hydrogen. Leakage from the fuel containment system can result in an explosion.
The fuel supply and containment system,
both inside and outside the analyzer,
should be carefully checked for leaks upon
installation, before initial startup, during
routine maintenance or any time the integrity of the sample containment system is
broken.
If hazardous sample is to be introduced
into this analyzer, the leak check procedure should also be applied to the sample
containment system, both inside and outside the analyzer.
Proceed as follows:
1. Check analyzer to make sure that plugs
and caps are removed from all inlet and
outlet fittings.
2-6 GAS CONNECTION
For external gas lines, the use of all new tubing throughout is strongly recommended.
Copper refrigeration tubing is preferred.
Stainless steel tubing is less desirable, because it contains hydrocarbon contaminants,
necessitating thorough cleaning before installation.
NOTE
In connecting gas supply lines and associated fittings, use Teflon tape only. Do not
use pipe thread compound or other substance with an organic base.
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-3
2. If a vent line is to be connected to exhaust
outlet, use 1/2-inch ID tube slanted
downward at least 10 degrees from horizontal.
NOTE:
Since water vapor is formed during oxidation of hydrogen, burner exhaust gas always contains moisture, even if air and
fuel entering the burner are completely
dry. Unless exhaust line slants down, water may accumulate in line, causing back
pressure and noisy readings. If exhaust
line becomes blocked, water may back up
in line and flood burner.
Instruction Manual
748262-M
May 2002
Model 400A
3. If sample is toxic or noxious, or is to be
reclaimed, connect by-pass outlet to suitable disposal system. Do not use any device causing back pressure on burner.
4. Clean external fuel, air, and sample lines
and regulators. If necessary, heat lines
with torch to drive out contaminants.
CAUTION
DISCONNECT ALL LINES
Do not perform this operation with the fuel,
air and sample lines connected to the
analyzer
5. Recommended method is to attach the
tubing to either a nitrogen or helium cylinder through a two-stage regulator, and
adjust the regulator for a low flow of gas
through the tubing. Use a propane or
natural gas torch to heat the tubing to at
least 300
slowly from the regulator end to the open
end. This will remove contaminants from
the inside walls of the tubing, and drive
them out the open end.
6. Connect external fuel and air lines to fuel
and air inlet fittings on analyzer. Connect
external sample line to sample inlet on
analyzer (or to inlet fitting on sample
pump, if used).
7. Adjust regulators on fuel and air cylinders
(or other gas supply sources) for appropriate output pressure. Maximum permissible pressure at AIR and FUEL inlets of
analyzer is 50 psig (345 kPa). The pressure at the AIR inlet must be at least 5
psig (35 kPa) higher than the desired setting on the air pressure gauge within the
analyzer. Thus if the internal FUEL pressure regulators are to be set at a typical
value of 25 psig (172 kPa), the pressure
at the FUEL inlet must be set 15 to 20
pounds higher than the operating pressure.
8. Supply sample gas at appropriate pressure, as explained in Section 2-5 (page 2-
2). Sample bypass flow must be between
o
C, working the heat source
0.5 and 3.0 liters/minute for proper operation. Preferably, it should be between 2.0
and 3.0 liters/minute, to minimize system
response time. Flow may be measured by
connecting a flowmeter to BY-PASS outlet.
2-7 LEAK CHECK
WARNING
POSSIBLE EXPLOSION HAZARD
Be particularly careful in checking for
leaks in the fuel lines. Fuel gas leakage
can cause an explosion.
Check all gas connections to ensure that they
are leak free. Use of SNOOP (P/N 837801) or
other suitable leak-test liquid is recommended. Do not use soap or other organic
substances; they will contaminate the system,
resulting in excessive noise and background
current. To leak check the fuel containment
system, it is necessary to have full operating
pressure within the system. To accomplish
this, hold the momentary IGNITE/PURGE
switch in the up or PURGE position.
2-8 ELECTRICAL CONNECTIONS
WARNING
POSSIBLE EXPLOSION HAZARD
Before supplying electrical power to analyzer, complete the gas connections and
verify that fuel gas connections are leak
free. Refer to Section 2-7 (page 2-4).
WARNING
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.
2-4 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
748262-M
May 2002
a. Line Power Connection
The Model 400A is manufactured to operate only on 115 VAC power. (Note that
the power input box and power selection
card display only 115 VAC operation.)
The power cable supplied is provided with
a North American-style parallel blade
grounded plug which must be inserted
into a 3-wire grounded receptacle.
If 230 VAC operation is desired, an external isolated step-down transformer accessory (not supplied) is required.
b. Voltage Output Selection and Cable
Connections for Recorder
The standard analyzer provides voltage
output only. As shipped from the factory,
the analyzer is set up for use with a 100
mV recorder (program header connecting
pins E9 and E10).
A selection of three voltage output
ranges, 0 to 0.1 VDC, 0 to 1.0 VDC or 0
to 5.0 VDC are available at terminals 3
and 4 of the lower six-position barrier strip
labeled OUTPUT. Refer to Figure 2-1,
page 2-6. To select 0 to 1.0 VDC range,
connect pins E7 and E8 on the main
electronics board assembly, P/N 620428,
with the program header. For the 0 to 5.0
VDC range, connect pins E5 and E6, and
for the 0 to 0.1 VDC range, connect pins
E9 and E10, with the program header.
This is a fully buffered signal and can be
used with most types of voltage recorders. A 10 VDC output displays 1999 on
digital readout, indicating 99.9% overrange. A 5 VDC output displays 1000 on
digital readout and indicates 100%, the
normal instrument span.
c. Voltage to Current Output Board (Op-
tional)
The optional current output in the range of
4 to 20 mADC appears at terminals 5 and
6. Refer to Figure 2-1, page 2-6. This current may be transformed back to a voltage using the appropriate resistor. This
fully isolated current board is an instrument option and mounts internally on the
Model 400A front panel assembly. The
maximum value of load resistor is 700
ohms. The 4 to 20 mA is valid over the
range of 0 to 100%; the overrange capability of 99.9% is not usable with this option because maximum output of 20 mA
corresponds to 5 VDC out.
If the voltage to current option is not utilized, insert program header connecting
pins E1/E2 and E3/E4 on the main electronics board assembly to allow a voltage
to appear at terminals 5 and 6 in place of
the current.
d. Auxiliary Contacts
A Form A contact closure is available on
pins 1 and 2 of the lower barrier strip at
the rear of instrument. Refer to Figure
2-1, page 2-6. These contacts may be
used with an existing alarm panel or annunciator system, providing the current
and voltage limits are observed. The rating for the contacts is 24 V at 1A DC.
Contacts operate in parallel with the internal fuel shutoff solenoid and may therefore be used for external "flame out"
indication.
e. Remote Range Control and Indication
The Model 400A allows remote control of
range or alternatively remote control indication; this is standard with each unit. As
an option, a fully isolated interface may be
installed. It performs the same function
but assures electrical isolation between
the analyzer and the control or indication
module. The isolated range/indication option requires an external 24 VDC power
supply for operation.
Range Control (Non-Isolated)
Terminals 1 through 7 on the upper terminal block at the rear of the instrument are
used for this function. Select RMT on the
front panel RANGE switch. Connect the
respective line, 1 through 7, to pin 3 (labeled GND) on the lower barrier strip. The
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-5
Instruction Manual
(+)
)
748262-M
May 2002
Model 400A
front panel will indicate the range selected. Terminals 1 through 7 correspond
to ranges 1 through 7. Table 2-1 below
shows a simple range selection arrangement.
Range Indication (Non-Isolated)
When the RANGE switch is in any position, including RMT, the range selection of
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 REM 24V 24V
J8
24VDC MAX
1 AMP
CNT1 CNT2 SND OUT
RANGE CONTROL
RANGE RET
VI
(-
the instrument may be determined by
sensing an output in terminals 1 through 8
on the upper terminal strip at the rear of
the instrument. Any selected range, 1
through 7 or RMT (position 8), will be indicated as a low or ground signal with respect to pin 3 of the lower barrier strip
labeled GND; all un-selected ranges will
indicate a high or +5 VDC with respect to
this same terminal.
1 2 3 4 5 6
OUTPUT
Figure 2-1. Range Input-Output Board
LOWER TB
UPPER TB
Terminal 3 1 2 34567
Range 1 X X
Range 2 X X
Range 3 X X
Range 4 X X
Range 5 X X
Range 6 X X
Range 7
XX
Table 2-1. Range Control
2-6 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
748262-M
May 2002
Isolated Remote Range Control and Identification
The Remote Control Assembly is located
on the rear panel of the instrument and is
shown in Figure 2-2 below. Connections
should be made to the terminals marked
Range Control where a single line interference is desired. By removing steering
diodes on printed circuit board 654910,
individual Range Control and Range I/O
connections may be made. Connections
are made to bare wire terminal which are
easily removable to facilitate installation.
Wires should not be tinned prior to installation to prevent premature loosening.
NOTE:
The terminal strips on the module use
screws to secure bare wires. These
wires should not be tinned or they may
loosen prematurely.
Range changes are achieved by applying
24VDC at about 150 mW to the terminals
marked "range control," using the common terminal as return. Only one range
may be selected at once. Range indication is achieved by individual 24 VDC (1
A) relay contacts.
OUTPUT
V mA
+ - + - C NO
FLAME OUT
24VDC MAX
WARNING
ELECTRICAL HAZARD
Range indication relay contacts are limited
to 24 VDC. Use of 115 VAC is unsafe.
Common control/sense connections may
be made to the range control terminals.
Voltage and current output signals are
also available on the range change module. Voltage output must be used with a
load of greater than 10 kilohms, current
output with less than 600 ohms. Voltage
output interconnects should be shielded
(use the V- output for shield connection)
but current output shielding is less critical.
If used, current output shielding should be
grounded on the reception end (computer
or chart recorder).
Remote Flame Out Indication
Terminals for flame out indication (TS12)
are shown in Figure 2-2 below.
f. Sample Pump Accessory
If a sample pump is used, 115 VAC,
50/60 Hz power must be provided to the
pump accessory independently. A power
cord is provided with this option and
mates with a standard 3-pin power connector at the rear of the housing.
TS12
CONTROL LINES 24 VDC, 150 Mw
REMOTE
24V ID
C 7 6 5 4 3 2 1
C 7 6 5 4 3 2 1
ALL CONTACTS 24 VDC MAX, 1 A MAX
CURRENT OUTPUT 600 OHMS MAX
TS10 RANGE ID 24 VDC MAX
TS11 RANGE CONTROL 24 VDC
SINGLE LINE CONTROL/SENSE
USE "RANGE CONTROL" CONNECTIONS
Figure 2-2. Range Control and Output Connections
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-7
Instruction Manual
748262-M
May 2002
Model 400A
2-8 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
748262-M
May 2002
SECTION 3
OPERATION
3-1 INITIAL STARTUP AND CALIBRATION
Section 3-1a (page 3-3) discusses calibration
methods and the associated standard gases.
Section 3-2 (page 3-4) explains the typical
calibration procedure.
After installing analyzer per Section 2, proceed as follows:
1. Set the RANGE multiplier switch (located
inside the small door on the analyzer front
panel) at 1000. Place POWER switch (located in the upper right-hand corner of the
main electronics board on the back of the
front panel) at ON. See Figure 3-1, page
3-2. The display should light up.
2. Set external regulators on air and fuel
cylinders (or other gas supply sources) for
suitable output pressure. Maximum permissible pressure at AIR and FUEL inlets
of analyzer is 50 psig (345 kPa). The
pressure at the AIR inlet must be at least
5 psig (25 kPa) higher than the desired
setting on the air pressure gauge within
the analyzer. The internal FUEL pressure
regulator is to be set at a typical value of
25 psig (172 kPa), the pressure at the
FUEL inlet must be set at least 20 lbs.
higher than the operation pressure.
3. If analyzer uses 100% hydrogen fuel,
supply actual sample or other suitable gas
to SAMPLE inlet port of analyzer (or to
inlet fitting on sample pump, if provided).
Note pressure and flow requirements explained in Section 2-4, page 2-2.
CAUTION
POSSIBLE BURNER DAMAGE
If analyzer uses 100% hydrogen fuel, an
adequate flow of sample or other gas must
enter sample inlet at all times when flame
is burning. Otherwise, burner will overheat and damage burner tip.
If analyzer uses mixed fuel, sample flow
may be initiated at this time, although it is
not necessary.
4. Set internal pressure regulators at values
appropriate to the fuel gas used. Refer to
Table 3-1 below.
Internal
Pressure
Regulator
Air
Fuel
Sample
Table 3-1. Internal Pressure Regulators Settings
The PURGE/IGNITE switch has two positions, IGNITE and PURGE.
5. With PURGE/IGNITE switch in PURGE
position, wait about one minute for fuel
gas to purge flow system. During purging
period, rotate FUEL pressure regulator
alternately clockwise and counterclockwise several times, then return to setting
specified in Step 4.
6. Briefly hold (2 to 4 sec.) PURGE/IGNITE
switch in IGNITE position, then release.
FLAME indicator should now be ON, indicating that flame is burning. If so, proceed with following steps. If FLAME
indicator does not stay on, the flame is
not burning. Again actuate IGNITE switch
If flame does not ignite after several attempts, refer to troubleshooting chart,
Table 5-1 (page 5-5). If difficulty is experienced, allowing gas to flow for 20 or 30
seconds in the PURGE position prior to
actuating the IGNITE switch may be
helpful.
If ignition indication [FLAME ON] is observed without obtaining proper sensitivity, refer to Table 5-1 (page 5-5).
100% H2 Fuel Mixed Fuel
psig/kPa psig//kPa
5/35 5/35
25/175 30/207
5/35 0/0
Fuel Gas
NOTE:
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-1
Instruction Manual
748262-M
May 2002
Model 400A
NOTE:
When lighting the burner after extended
shutdown, the instrument will require time
to allow fuel to reach the burner. Therefore, extended operation of the switch may
be required.
POWER
OFF ON
S2
Front Panel
Power Switch S2
Main Electronics Board
Figure 3-1. Power Switch Location
7. Increase setting on internal AIR pressure
regulator to at least 15 psig (103 kPa).
Recommended operating settings for internal pressure regulators are AIR, 15
psig (103 kPa); FUEL, 25 psig (172 kPa).
Verify that FLAME indicator is still on.
The analyzer is equipped with an automatic fuel shutoff solenoid. If flame goes
out during subsequent operation, fuel gas
flow will shut off automatically.
If analyzer has been in regular use, it is
now ready for calibration, per Section 3-2
below (page 3-4), and then for normal operation. However, during initial startup, or
startup following a prolonged shutdown,
the following steps should first be performed.
8. Check for contamination in air and fuel
systems:
a. Supply a clean, hydrocarbon-free gas,
such as pure nitrogen to the SAMPLE
inlet. Adjust external flow controller or
throttle valve so that flow discharged
from BY-PASS outlet is between 0.5
and 3.0 liters/minute (preferably be-
tween 2.0 and 3.0 liters/minute). Set
internal SAMPLE pressure regulator at
5.0 psig (34.5 kPa).
b. Set RANGE switch at 10, SPAN con-
trol at 1000 (maximum sensitivity), and
ZERO control at 1000 (minimum zero
suppression). Approximate fullscale
sensitivity is now 10 ppm as methane
for mixed fuels if the analyzer uses
100% hydrogen fuel, and 40 ppm
methane if the analyzer uses mixed
fuel.
c. Check display. Maximum acceptable
reading is 50% of fullscale. A higher
reading indicates that the contamination level is undesirably high. Excessive noise and baseline drift may
result, depending on the desired operating range. If the instrument is to be
operated at high sensitivity, the source
of the contamination must be determined and the condition corrected.
The most probable contamination
sources are the fuel and air supplies,
external regulators and connecting
lines, and the internal flow system of
the analyzer.
If the instrument is to be operated at a
sensitivity low enough so that the
noise and drift will not be observable
on the display or recorder, removal of
the source of contamination is unnecessary.
9. With flame burning, allow system to stabilize for at least two hours, and preferably
for a day. After initial startup, or after
startup following a prolonged shutdown,
the analyzer may display baseline drift for
a considerable period of time, particularly
on the more-sensitive ranges. Commonly,
small amounts of hydrocarbons are present on the inner walls of the tubing in both
the internal flow system and the external
gas-supply system. Drift results from any
factor influencing the equilibrium of these
absorbed hydrocarbons. Typical causes
are change of fuel cylinders or change in
temperature or pressure. (Note that this
type of drift occurs only when the flame is
3-2 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
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May 2002
burning. If drift occurs when the flame is
extinguished, the electronic circuitry is at
fault.)
To minimize drift, use clean fuel and air, keep
the analyzer clean, and locate the gas cylinders in an area of relatively constant ambient
temperature.
a. Selection of Calibration Method and
Associated Standard Gas(es)
Preparatory to normal operation of the
analyzer, it is necessary to select a suitable calibration method and appropriate
standard gas(es). Proper choice depends
on the type of fuel gas, the intended operating range, and the desired accuracy.
In all methods, the objective is to establish both a downscale point and an upscale point on the display or recorder
chart. Different methods are described
below.
Downscale Calibration P
O
The downscale calibration point is set with
the ZERO control, by the appropriate one
of two methods:
1. The generally preferred method is to
adjust the ZERO control while a zero
standard gas of low, accurately-known, hydrocarbon content is
int
entering the SAMPLE inlet port. This
method is desirable with all analyzers,
and is mandatory if the analyzer utilizes 100% hydrogen fuel. Typically,
nitrogen (zero gas grade) is used as
the zero gas. If desired, the burner air
may be used as zero gas, provided
that its hydrocarbon content is sufficiently low and accurately known. Although ideally the zero gas should be
completely hydrocarbon-free, even
the most carefully prepared bottled
gas contains trace hydrocarbons. If
the analyzer is to be used at high
sensitivity, request that the supplier of
the zero gas provide an exact determination of its hydrocarbon content.
2. If the analyzer utilizes mixed fuel, an
alternative method eliminates the requirement for a special zero gas. Instead, the ZERO control is adjusted
with no gas entering the SAMPLE inlet. This method is not possible with
analyzer utilizing 100% hydrogen fuel,
because the burner would overheat.
Even with mixed fuel, the method is
not recommended if the analyzer is to
be used at sensitivity less than 100
ppm full scale.
3. Refer to Figure 3-2 below for typical
curves of downscale response versus
time for various hydrocarbons.
Sample CH4 (Methane)
Sample C3H8 (Propane)
Analyzer
Response
Sample C6H
Time
14
(Hexane)
Figure 3-2. Typical Curves of Downscale Response vs. Time for Various Hydrocarbons
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-3
Instruction Manual
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May 2002
Model 400A
Upscale Calibration Point
In all applications, the upscale calibration
point is established by adjustment of the
SPAN control, while a standard gas of accurately known hydrocarbon content is
flowing into the SAMPLE inlet port. Since
instrument response is linear, it is not
necessary that the hydrocarbon content of
the span gas fall within the desired operating range. The instrument may be standardized on one range, and then switched
to another range without loss of accuracy.
Commonly, a conveniently obtained standard such as 100 ppm methane or 1000
ppm methane is used regardless of
range.
A span gas consists of a specified concentration of methane or other hydrocarbon in a background gas such as
nitrogen. Instrument response is affected
by the composition of the background
gas. Therefore, it is desirable that the
span gas contain the same background
gas as the actual sample. If so, the background effect is automatically canceled
out.
Standard Gas(es)
Upscale standard gas (and zero standard
gas, if used) should be supplied from a
tank or cylinder equipped with a clean,
hydrocarbon-free, two-stage pressure
regulator.
(34 kPa) or other desired value.
(Recommended operating range is 4
to 5 psig [28.6 to 34 kPa] for analyzer
using 100% hydrogen fuel, and 1.5 to
5 psig [10 to 34 kPa] for analyzer using mixed fuel.)
CAUTION
POSSIBLE BURNER DAMAGE
If analyzer uses 100% hydrogen fuel, an
adequate flow of sample or other gas must
enter sample inlet at all times when flame
is burning. Otherwise, burner will overheat and damage burner tip.
b. Set RANGE switch at 10 and SPAN
potentiometer at 1000. The resultant
approximate fullscale sensitivity is 10
ppm methane for an analyzer using
100% hydrogen fuel, and 40 ppm
methane for an analyzer using mixed
fuel.
c. Adjust ZERO control for reading of
zero (or appropriate near-zero value)
on indicator or recorder. The resultant
setting on the ZERO control is approximately correct, and is sufficiently
accurate for most applications. However, if instrument is to be used for
high sensitivity analysis, a recheck
and possible slight readjustment will
be made. Refer to Section 3-8, page
3-8.
3-2 CALIBRATION PROCEDURE
After completing startup procedure of Section
3-1a (page 3-3), calibrate analyzer as explained below.
1. Set downscale calibration point as follows:
a. Supply zero gas to SAMPLE inlet. Ad-
just external flow controller or throttle
valve so that flow discharge from
BY-PASS outlet is between 0.5 and
3.0 liters/minute (preferably between
2.0 and 3.0 liters/minute). Set internal
SAMPLE pressure regulator at 5 psig
3-4 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
2. Set upscale calibration point as follows:
a. Turn RANGE switch to setting appro-
priate to the particular span gas. Refer to Table 3-2, page 3-5.
b. Supply span gas to SAMPLE inlet.
Adjust external flow controller or
throttle valve so that flow discharged
from BY-PASS outlet is between 0.5
and 3.0 liters/minute (preferably between 2.0 and 3.0 liters/minute). Verify that reading on internal SAMPLE
pressure gauge is 5 psig or other de-
Model 400A
Instruction Manual
748262-M
May 2002
sired value; if not, adjust SAMPLE
pressure regulator as required.
c. Adjust SPAN control so that the dis-
play or recorder gives the desired indication. Lock SPAN control by
pushing lever down.
Analyzer calibration is now sufficiently
accurate for most applications. However, if instrument is to be used for
high sensitivity analysis, recheck zero
RANGE SWITCH SETTINGS
1 0 to 1 ppm CH4 0 to 4 ppm CH4
2.5 0 to 2.5 ppm CH4 0 to 10 ppm CH4
10 0 to 10 ppm CH4 0 to 40 ppm CH4
25 0 to 25 ppm CH4 0 to 100 ppm CH4
100 0 to 100 ppm CH4 0 to 400 ppm CH4
250 0 to 250 ppm CH4 0 to 1000 ppm CH4
1000 0 to 1000 ppm CH4 0 to 4000 ppm CH4
setting (refer to Section 3-8, page 3-
8). If recorder readout and display do
not agree, correct display by adjusting
R1 on front panel board.
d. Supply zero gas to SAMPLE inlet as in
Step 1. a. Set RANGE switch at 10.
Note reading on indicator or recorder;
if incorrect, adjust ZERO control as
required. Lock ZERO control by
pushing lever down. Analyzer is now
ready for routine operation as explained in Section 3-5 (page 3-8).
APPROXIMATE OPERATING RANGE SPAN CONTROL AT
1000
Note: For best results, calibrate with appropriate span gas every time the range is changed. For a
clear understanding of the function of the Range Switch, see Section 3-3 below.
Table 3-2. Range Switch Settings
3-3 RANGE SWITCH
The operator can choose from seven range
multipliers as represented by the settings on
the Range Switch: 1, 2.5, 10, 25, 100, 250,
and 1000.
Range 1 is the most sensitive, range 1000 the
least sensitive. Range 1 is 10 times more
sensitive than Range 10 and so forth.
The Range Switch settings (multipliers) and
the display outputs do not represent hydrocarbon concentrations in percent or ppm. The
LED display shows the percent of the fullscale
range which has been calibrated on the multiplier selected. The display also shows which
range multiplier has been selected on the
Range Switch (1 = 1, 2 = 2.5, 3 = 10, 4 = 25, 5
= 100, etc.).
Range 1 has a maximum sensitivity of 1 ppm
CH
4
(as 100% fullscale) if 100% H2 fuel is
used, or 4 ppm CH
Range 2.5 has a maximum sensitivity of 2.5
ppm CH
mixed fuel.
4
with 100% H2, 10.0 ppm CH4 with
4
if mixed fuel is used.
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-5
Instruction Manual
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May 2002
Example 1:
With the Range Switch set at 2.5, the operator
can use, for example, 6 ppm CH
calibrate the instrument for 20 ppm fullscale
(30.0% x 20 ppm CH
3-3 below for display output and Range
Switch setting.
4
= 6.0 ppm). See Figure
4
span gas to
Model 400A
Example 3:
Likewise, after the calibration in Example 1,
Range 1 is automatically calibrated for 8 ppm
as 100% fullscale. Therefore, when switching
from Range 2.5 to 1 (which is 2.5 times more
sensitive than 2.5), the display will show
4
75.0% fullscale for 6.0 ppm CH
gas (because 75.0% x 8 ppm CH
4
CH
). See Figure 3-5 below.
calibration
4
= 6 ppm
30.0 2
PERCENT OF RANGE RANGE
RANGE MULTIPLIER
100
25
10
2.5
250
1000
1
RMT
Figure 3-3. Example 1 Display
Example 2:
After the calibration in Example 1, Range 10
is now automatically calibrated for 80 ppm
4
CH
as 100% fullscale. (Note that Range 10 is
4 times less sensitive than Range 2.5).
Therefore, when the operator switches from
Range 2.5 to Range 10, the display will show
7.5% fullscale for ppm CH
since 7.5% x 80 ppm CH
4
calibration gas
4
= 6.0 ppm CH4.
See Figure 3-4 below.
75.0 1
10
2.5
Figure 3-4. Example 2 Display
7.5 3
10
2.5
Figure 3-5. Example 3 Display
NOTE:
The precision of the analyzer is ±1% fullscale of range. Analyzer should be calibrated with a span gas that has a
hydrocarbon concentration as close to the
fullscale concentration as possible.
3-4 RANGE TRIM OPTION
The Range Trim option allows the user to adjust each range separately to compensate for
differences between calibration gas cylinders
from range to range.
See Figure 3-6. The E1, E2 and E3 jumpers
allow selection from "fixed" front span potentiometer use to "trim" individual potentiometers
for each range. In the trim position, the adjustment range of the individual pot is about
20% when the front panel span pot is set fully
clockwise. If the front panel span pot is set
fully counterclockwise, the individual pot
range is about 5%.
3-6 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
748262-M
May 2002
J11
3
SPAN
2
1
ZERO
AGND
DGND
TP9
6
5
4
16
9
+5V
-5V REF
R10 5K
R38
30K
R9
20K
C1
1uF
CR1
FIXED
E1
E2
R1
E3
TRIM
K1
2
10K
R2
10K
R3
10K
R4
10K
R5
10K
R6
10K
R7
10K
2
CR2 CR6
CR3
K1
6,7
12
K2
6,7
12
K3
6,7
12
K4
6,7
12
K5
6,7
12
K6
6,7
12
K7
6,7
12
CR4
K4K2
2
K3
2
CR5
Model 400A
J11
15
14
13
12
8
K5
2
K6
2
CR7
K7
2
7
10
11
11
11
11
11
11
11
11
Figure 3-6. Range Trim Option Schematic
3-8 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
748262-M
May 2002
3-5 ROUTINE OPERATION
Model 400A
3-6 RECOMMENDED CALIBRATION FRE-
QUENCY
After calibrating instrument per Section 3-2
(page 3-4), proceed as follows:
Supply sample gas to SAMPLE inlet. Adjust
external flow controller or throttle valve so that
flow discharged from BY-PASS outlet is between 0.5 and 3.0 liters/minute (preferably
between 2.0 and 3.0 liters/minute). Note
reading on BY-PASS pressure gauge. It
should be the same as that used during adjustment of the SPAN control; if not, adjust
SAMPLE pressure regulator as required.
Turn RANGE switch to appropriate position.
Indicator (and recorder, if used) will now
automatically and continuously indicate the
hydrocarbon content of the sample. Normally,
readout is in terms of CH
particular hydrocarbon present in the usual
span gas. Note that readings obtained during
operation depend on the type, as well as the
concentration, of hydrocarbons in the sample.
If maximum accuracy and stability are desired, observe the operating requirements explained in Section 3-8.
, since this is the
4
After initial startup, or startup following a prolonged shutdown, the analyzer requires about
one day for stabilization. For the first few days
thereafter, calibrate daily. Subsequently, the
frequency of calibration can be reduced as
experience dictates, consistent with the accuracy requirements of the particular application.
3-7 SHUTDOWN
WARNING
SHUTDOWN PROCEDURE
For safety in shutdown, always turn off
fuel gas first, then the air and sample lines.
3-8 OBTAINING MAXIMUM SENSITIVITY
If maximum sensitivity is desired, it is necessary to use an optimum combination of settings on the SAMPLE, FUEL, and AIR
pressure regulators. Settings must be determined experimentally; however, the curves of
Figure 3-7, Figure 3-8, and Figure 3-9 on the
following pages may be used as a guide.
3-8 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
1.0
Instruction Manual
748262-M
May 2002
1.0
0.8
RESPONSE
(100 ppm CH
4
fullcale)
0.6
SAMPLE: 100 ppm CH
FUEL: 25 psig H
AIR: 25 psig
0.4
0.2
0
0 2 3 4 5 6 7
SAMPLE PRESSURE
(psig)
4
in N
2
2
Figure 3-7. Typical Curve of Analyzer Response vs. Pressure Setting on Sample Pressure
0.8
AIR: 30 psig
AIR: 30 psig
RESPONSE
(100 ppm CH
4
fullcale)
0.6
AIR: 30 psig
0.4
0.2
0
5
34.4
10
68.8
103.2
SAMPLE PRESSURE
SAMPLE: 100 ppm CH4 in N2 @ 5 psig
15
20
137.6
psig
kPa
25
172.6
30
206.4
Figure 3-8. Typical Curves of Analyzer Response vs. Pressure Setting on Fuel Pressure Regulator
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-9
Instruction Manual
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May 2002
Model 400A
1.0
15
103.2
psig
kPa
2
2
2
20
137.6
25
172.630206.4
RESPONSE
(100 ppm CH4 fullcale)
0.8
0.6
0.4
0.2
FUEL: 30 psig H
FUEL: 25 ppm H
FUEL: 20 ppm H
SAMPLE: 100 ppm CH4 in N2 @ 5 psig
0
5
34.4
10
68.8
AIR PRESSURE
Figure 3-9. Typical Curves of Analyzer Response vs. Pressure Setting on Air Pressure Regulator
3-10 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
748262-M
May 2002
SECTION 4
THEORY
4-1 PRINCIPLES OF OPERATION
The Model 400A Hydrocarbon Analyzer utilizes the flame ionization method of detection.
The sensor is a burner in which a regulated
flow of sample gas passes through a flame
sustained by regulated flows of air and a fuel
gas (hydrogen or a hydrogen/diluent mixture).
Within the flame, the hydrocarbon components of the sample stream undergo a complex ionization that produces electrons and
positive ions. Polarized electrodes collect
these ions, causing current to flow through
electronic measuring circuitry. Current flow is
proportional to the rate at which carbon atoms
enter the burner.
4-2 BURNER
Principle components of the burner are the
manifold, burner jet, and the collector.
Streams of sample, fuel and air delivered by
the analyzer flow system (Section 4-3) are
routed through internal passages in the
manifold and into the interior of the burner.
Here the sample and fuel pass through the
burner jet and into the flame; the air stream
flows around the periphery of the flame.
The burner jet and the collector function as
electrodes. The jet is connected to the positive terminal of the 90 VDC polarizing voltage.
The collector is connected to the signal amplifier. The two polarized electrodes establish
an electrostatic field in the vicinity of the
flame. The field causes the charged particles
formed during combustion to migrate. Electrons go to the burner jet; positive ions go to
the collector. Thus a small ionization current
flows between the two electrodes. Magnitude
of the current depends on the concentration of
carbon atoms in the sample. The burner current serves as the input signal to the electronic measuring circuitry (Section 4-4).
Mounted on the burner are (1) igniter, driven
by flame ignition circuit and (2) thermistor
sensor for flame status indicator circuit.
Signal Conditioning
Negative Ion
Collection Ring
+90V
Sample
Positive
Carbon
Ions
Air
Fuel
Figure 4-1. Flame Ionization Detection Theory
Rosemount Analytical Inc. A Division of Emerson Process Management Theory 4-1
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Model 400A
a. Response to Different Hydrocarbons
Both speed and magnitude of analyzer
response are affected by the type of hydrocarbon in the sample. Typical curves
of response versus time for various hydrocarbons are given in Figure 3-2, page
3-3.
Magnitude of the analyzer response to an
atom of carbon depends on the chemical
environment of this atom in the molecule.
The characteristic response of a given
type of atom may be expressed approxi-
mately by a value designated the "effective carbon number." The effective
carbon number of a particular type of carbon atom is defined as the ratio between
the instrument response caused by an
atom of this type and the instrument response caused by an aliphatic carbon
atom. Table 4-1 (page 4-2) lists approxi-
mate effective carbon numbers for several
types of carbon atoms. Although the instrument does not respond directly to atoms other than carbon, in some
compounds certain other atoms do
change instrument sensitivity to carbon.
For this reason, values are listed for a few
non-carbon atoms. Values in the table
were determined experimentally, on a
single analyzer. Because of slight variations in characteristics of individual analyzers, these values should be regarded
as approximations only.
To determine the effective carbon number
of a molecule of a given organic compound, algebraically add the individual
values for the constituent atoms. Examples of effective carbon numbers of molecules are: Butane (C
8H18
(C
1.4.
), 8; and ethyl alcohol (C2H5OH),
4H10
), 4; octane
TYPE OF ATOM OCCURRENCE EFFECTIVE CARBON NUMBER
Carbon In Aliphatic Compound +1.00
Carbon In Aromatic Compound +1.00
Carbon In Olefinic Compound +0.95
Carbon In Acetylenic Compound +1.30
Carbon In Carbonyl Radical 0.00
Carbon In Nitrile +0.30
Carbon In Ether -1.00
Carbon In Primary Alcohol -0.60
Carbon In Secondary Alcohol -0.75
Carbon In Tertiary Alcohol, Ester -0.25
Chlorine
Chlorine On Olefinic Carbon Atom +0.05
Nitrogen In Amine
Effective Carbon
numbers =
Instrument response caused by aliphatic carbon atom
As two or more chlorine atoms on single aliphatic
carbon atom
Instrument response caused by atom of given type
Table 4-1. Approximate Effective Carbon Numbers
-0.12
Value similar to that for oxygen
atom in corresponding alcohol
4-2 Theory Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
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May 2002
4-3 ANALYZER FLOW SYSTEM
The internal flow system of the analyzer is
shown in drawing 622883. Its basic function
is to deliver regulated flows of sample, fuel,
and air to the burner. In addition, the system
routes the burner exhaust gas and sample
bypass flow out of the analyzer through the
corresponding outlet ports.
Suitable pressurized gases are supplied to the
SAMPLE, FUEL, and AIR inlet ports. Each
inlet fitting contains an internal filter.
Each of the three gas streams is routed to the
burner via a flow control arrangement consisting of the following elements:
1. An adjustable pressure regulator. The
AIR and FUEL pressure regulators provide controlled pressure on the downstream side. The SAMPLE pressure
regulator is a back-pressure regulator that
provides controlled pressure on the upstream side, and discharges excess sample through the BYPASS outlet. (Bypass
feature provides high velocity sample flow
through analyzer, to minimize system response time.)
2. A flow limiting element, selected to pass
the appropriate gas flow when the pressure drop is adjusted to the correct value.
The air and fuel streams utilize porous,
sintered metallic restrictor elements
mounted in fittings. The sample stream
uses a calibrated capillary tube.
3. A gauge that indicates pressure at the inlet end of the corresponding restrictor or
capillary. Ranges are SAMPLE pressure
gauge, 0 to 5 psig (0 to 35 kPa); AIR and
FUEL pressure gauges, 0 to 30 psig (0
TO 207 kPa).
further amplified by a post amplifier before
being converted to a digital display suitable for
direct data presentation. To cover the required dynamic range, the amplifier is provided with two gain ranges that differ by a
factor of 100.
Output voltage from the preamp is a precise
function of ionization current. In equation
form:
e
out = -i
i
x R
f
Where i i = ionization current
R
= feed back resistance
f
The most sensitive gain range includes a trim
adjustment so that inter-range correlation can
be obtained over the entire signal span.
A buffer signal offering unity gain and noise
filtration provide a low output impedance to
drive the signal cable and post amplifier circuits on the main circuit board. Selection of
the low or high range feedback resistors is
made by relay K1 on the preamplifier board.
Refer to the preamplifier board schematic in
the rear of this manual.
A variable offset current is injected into the
summing node of the electrometer amplifier to
compensate for background offset current.
These currents influence the measurement
procedure, and a variable voltage at the front
panel allows the user to visually cancel these
currents during the calibration procedure.
Background current is due to unavoidable
traces of carbonaceous material introduced
into the burner flame by the fuel gas and air.
4-4 PREAMPLIFIER BOARD
The ionization current generated by the
burner is measured by an electrometer preamplifier located adjacent to the burner assembly. This small current is amplified and
transformed into a signal voltage that is then
Rosemount Analytical Inc. A Division of Emerson Process Management Theory 4-3
Instruction Manual
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May 2002
Model 400A
4-5 MAIN ELECTRONICS BOARD
a. Post Amplifier
The post amplifier circuit comprises two
amplifiers with various combinations of
feedback resistances that are logically
selected by the front panel RANGE switch
or external inputs. The range selection
process provides a total of seven possible
gains corresponding to the input sensitivities in Table 4-2, page 4-4.
b. Digital Display
The voltage originating from the signal
amplifiers is made available to output
terminals and directly to an analog to
digital (A-D) converter for data display in
digital form. The A-D converter is termed
3 1/4 digits, which implies a maximum
reading of 1999. The one bit signifying
overrange allows 100% excursion above
the normal 99.9% range. Thus the user,
depending upon span and zero offset
conditions, may select the presentation to
read directly in percent of fullscale and
still have 100% overrange capability remaining.
c. Span
To compensate for various calibration
gases, provision is made to vary the gain
with a variable span control. The variable
span, accessed on the front panel through
a calibrated potentiometer, allows gain
variation of 400%.
Table 4-3 (page 4-4) gives the fullscale
sensitivity of the current measuring circuitry for the various settings on the
RANGE switch and SPAN control.
d. Range Trim (Option)
The Range Trim will allow individual adjustment on each range to compensate
for different gas standards between
ranges.
e. Remote Range Control
Internally all of the range terminals are
pulled up to the system 5V power supply
through 10K ohm resistors and are
therefore suitable for connection to any
TTL or equivalent logic circuit. See Section 2-8e, page 2-5.
RANGE
RANGE SWITCH SET-
TING
PREAMP GAIN POST AMP GAIN
11 HIGH 50
22.5 HIGH 20
310 HIGH 5
425 HIGH 2
5 100 LOW 50
6 250 LOW 20
7 1000 LOW 5
8RMT - REMOTE
Table 4-2. Input Sensitivities
RANGE SWITCH
FULLSCALE SENSITIVITY AMPS
SETTING MAX SPAN MIN SPAN
15 x 10
22 x 10
35 x 10
42 x 10
55 x 10
62 x 10
-12
-12
-11
-11
-10
-12
6.66 x 10
1.66 x 10
6.66 x 10
1.66 x 10
6.66 x 10
1.66 x 0
-12
-11
-11
-10
-10
-9
Table 4-3. Fullscale Sensitivity
4-4 Theory Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
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May 2002
Model 400A
4-6 HEATER/FAN TEMPERATURE ASSEMBLY
The temperature controller is located in the
heated compartment of the instrument. The
RTD temperature sensor, in conjunction with
a control circuit, maintains the internal temperature to meet performance specifications
for the instrument. The temperature is controlled at 122°F (50°C). Refer to schematic
drawing 624003 in the rear of this manual.
This temperature is maintained at a constant
level to minimize temperature dependent
variations in amplifier sensitivity and to prevent changes in absorption/desorption equilibrium of trace hydrocarbons in the internal flow
system. A blower fan runs continuously to
circulate air and equalize the temperature
throughout the analyzer.
The temperature control board is a multipurpose board with a control resistor that is
factory-selected for the model analyzer in
which it is used. Schematic 624003 shows
the correct jumper position for the Model 400A
NOTE:
230 VAC operation requires an accessory
transformer mounted external to the instrument. If external 230 VAC power is
provided, do not change the switch setting
on the temperature control board, which is
factory-selected for 115 VAC.
A 230 VAC switch setting will cause the
case temperature controller to malfunction.
4-7 IGNITION CIRCUIT
The ignition circuit is used to light the burner
flame during instrument startup. The principle
circuit components are as follows:
• IGNITE switch mounted on the preamp
board and connected in series with the
primary of the transformer
4-8 SYSTEM POWER SUPPLIES
Several power supplies are used within the
Model 400A for the electrical functions.
These are as follows:
±12 VDC
Used for most analog functions.
±5 VDC
These two voltages derived from a precision
reference are used for zero offset and bias
requirements.
+5 VDC
Used to power the digital circuit range decoding A-D display, etc.
+93 VDC
Used for the burner tip polarizing voltage.
+24 VDC
(unregulated) - Used for relays.
All of the power supplies are electronically
regulated with the exception of the +24 VDC
supply. Shorting of one supply to another
may cause damage.
4-9 FLAME-OUT BOARD
Refer to schematic 657546 in the rear of this
manual. Loss of the flame shuts down the
fuel solenoid. If there is a flammable component in the sample, a fail safe solenoid accessory is available for wiring in parallel with the
fuel solenoid.
• Igniter element mounted in the burner
cap
• Step-down transformer (PN 621049)
4-6 Theory Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
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May 2002
Model 400A
4-6 Theory Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
748262-M
May 2002
SECTION 5
SERVICE AND TROUBLESHOOTING
WARNING
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.
The power plug must be disconnected
from the rear of the instrument before removing any of the boards and/or interconnect plugs.
5-1 SYSTEM CHECKOUT
If analyzer performance is unsatisfactory,
make the following tests in the sequence
given.
a. Amplifier Zero Adjustment
Place POWER switch at ON; RANGE
switch at 1000; ZERO and SPAN potentiometers at 1000. With flame extinguished, note reading on front panel
indicator, or on potentiometric recorder if
used. Reading should be zero; if not, adjust trimming potentiometer R13 on amplifier circuit board. Potentiometer R13 is
adjusted by inserting a screwdriver
through the lower hole in the amplifier
shield.
b. Zero Current Adjustment
If a current recorder is used, verify that it
reads zero. If not, adjust trimming potentiometer R1 on the current output board.
c. Electrical Leakage Check
Turn RANGE switch from position 1000 to
position 1; indicator or recorder should
still read 0 ±5%. If reading is outside this
range, leakage is excessive. To determine the source of the leakage, disconnect the amplifier input cable from burner,
and note response of indicator or recorder. If abnormal reading persists, leakage is in either the cable or electronics. If
reading drops to zero, leakage is in the
burner. Clean burner per Section 5-2a,
page 5-2. Reconnect cable to burner.
d. Flame Ignition
Start up analyzer per Section Three, and
attempt to ignite flame. If flame will not ignite refer to Table 5-1, page 5-5, Item 2.
e. Noise Check
With flame burning, observe indicator or
recorder. If noise is greater than 2% of
fullscale, refer to Table 5-1, page 5-5,
Item 3.
f. Overall Sensitivity Check
With flame burning, supply a suitable
span gas to SAMPLE inlet. Turn RANGE
switch to a setting appropriate to the hydrocarbon content of the particular span
gas. Adjust SPAN control for reading of
100% on indicator or recorder. If the desired upscale reading is unobtainable by
adjustment of the SPAN control, the fault
may be in either the flow system (Table
5-1, page 5-5, Item 4) or in the electronics.
Rosemount Analytical Inc. A Division of Emerson Process Management Service and Troubleshooting 5-1
Instruction Manual
748262-M
May 2002
BACKGROUND
SIGNAL
ppm CH
4
Model 400A
Note: Fuel 100% hydrocarbon. Fuel, air and zero gas cylinders at constant temperature.
0
-17.610-12.220-6.6
30
-1.1404.4
Figure 5-1. Effect of Analyzer Temperature on Background Signal – Typical Curve
g. Stability Check
Supply zero gas to SAMPLE inlet. Turn
RANGE switch to Position 1. Observe indicator or recorder over several hours of
operation. Drift greater than the stability
specification may be due to malfunctioning of the internal temperature control. For
comparison, Figure 5-1 above shows the
typical effect of ambient temperature
variations on background reading for a
standard analyzer, with internal temperature controller functioning normally. In this
example, temperature dependent variations in background signal are very small.
However, note that such high stability is
obtainable only with exceedingly clean
cylinder gases. Background signal, and
temperature dependent variations in this
signal, increase with level of trace hydrocarbon contaminants.
50
10
ANALYZER AMBIENT TEMPERATURE
60
15.57021.18025.69032.2
5-2 SERVICING FLOW SYSTEM AND BURNER
In preventive maintenance of the flow system,
the most important precautions are (1) provision for continuous removal of all combustion
products, including water vapor, and (2) the
use of great care to prevent the contamination
of any component with hydrocarbons, even in
trace amounts.
COMPONENT CONTAMINATION
Never touch burner tip, Teflon skirt, or
combustion chamber with bare hands; always use clean gloves or cloth. If this
precaution is not observed, oil from skin
will contaminate these components.
a. Burner Disassembly and Cleaning
100
37.8
CAUTION
110
43.3
120
48.9
F
°
C
°
If the internal temperature controller is
functioning normally, apparent drift may
be due to changes in ambient temperature of the fuel and air cylinders. For further information, refer to Section 3-8
Obtaining Maximum Sensitivity (page 3-
8).
Disassemble the burner only if contaminants must be removed. Combustion
products or other contaminants which accumulate inside the burner may form
electrical leakage paths between the collector and the burner contact, resulting in
noisy readings. If the instrument is to be
operated at the highest sensitivity, traces
5-2 Service and Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
Instruction Manual
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May 2002
of such contaminants can cause erroneous readings. For best performance, it is
necessary that the burner be kept free of
any contamination.
WARNING
POSSIBLE EXPLOSION HAZARD
This analyzer uses a fuel containing hydrogen. Leakage from the fuel containment system can result in an explosion.
The fuel supply and containment system,
both inside and outside the analyzer,
should be carefully checked for leaks upon
installation, before initial startup, during
routine maintenance and any time the integrity of the containment system is broken.
When burner requires cleaning, refer to
Figure 4-1 (page 4-1) and DWG 623190
and proceed as follows:
1. Place POWER switch at OFF position
and disconnect power cord.
7. Unscrew and remove burner tip assembly.
NOTE:
All items used for cleaning (tweezers,
swabs, etc.) must be absolutely free of
contamination.
8. Clean chimney assembly, combustion
chamber, and burner tip assembly
with alcohol, followed by a distilled
water wash.
Using care not to touch internal parts, reassemble burners as explained in the following steps.
1. Holding burner tip assembly with
clean tissue, screw finger-tight into
manifold.
2. Push combustion chamber down onto
manifold, taking care not to hit burner
tip. Tighten clamp on combustion
chamber.
2. Shut off fuel gas first, then air and
sample gases.
3. Unscrew burner cap retainer ring and
remove burner cap.
4. On combustion chamber, disconnect
polarizing voltage cable and amplifier
input cable.
5. Lift chimney from combustion chamber. Leave exhaust tubing connected
to chimney unless old chimney is to
be replaced.
6. Loosen clamp. Lifting straight up, remove combustion chamber from
manifold.
NOTE:
If old burner tip assembly is to be used
again, do not touch it with bare hands
or any materials likely to contaminate
it with hydrocarbons, salt, etc.
3. Replace chimney on combustion
chamber.
4. Replace burner cap.
5. Reconnect all leads.
b. Thermistor
The thermistor sensor for the FLAME
OUT indicator circuit is mounted in the
burner. See Figure 4-1 (page 4-1). Thermistor resistance should be approximately
100K ohms at 77
method requires that the comparator input
signal be measured at the junction of R32
and R33. When the flame is burning normally, the voltage at this point will be 0.1
VDC to 0.3 VDC, indicating that the thermistor circuit is functional and the flame
temperature is correct.
c. Fuel and Air Restrictors
Fuel and air restrictors are porous, sintered metallic, restrictor elements
o
F (25oC). An alternate
Rosemount Analytical Inc. A Division of Emerson Process Management Service and Troubleshooting 5-3
Instruction Manual
748262-M
May 2002
Model 400A
mounted within fittings. If a restrictor becomes plugged, replace it. Do not attempt
to clean restrictors with solvents. See
DWG 622883.
d. Sample Capillary
The sample capillary is equipped with fittings, permitting convenient removal and
replacement. If necessary, the capillary
may be cleaned with acetone or methyl
ethyl ketone, followed by distilled water
wash. Refer to warnings in Section 5-2a,
page 5-2.
5-3 TROUBLESHOOTING
For troubleshooting the electronic system,
refer to the appropriate schematic at the rear
of this manual. For troubleshooting the burner
system, refer to Table 5-1, page 5-5.
5-4 Service and Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
SYMPTOM PROBABLE CAUSE POSSIBLE REMEDY
Indicator shows
upscale reading
when flame is out.
Electrical leakage in burner assembly. Clean burner per Section 5-2a, page 5-2.
Fuel gas emerging from burner jet diluted with other gases because fuel
system is insufficiently purged.
Purge FUEL pressure regulator by allowing gas to
flow for several minutes, while turning regulator
alternately clockwise and counterclockwise.
Instruction Manual
748262-M
May 2002
Burner will not ignite.
Indicator reading
noisy
OSS OF SENSITIVITY
L
Sample pressure
fluctuations
False flame
(FLAME-ON) indication of span gas
produces little or no
upscale deflection.
AIR and/or FUEL pressure regulator
improperly adjusted.
No flow, or reduced flow, of fuel and/or
air into burner combustion chamber.
Malfunction in igniter circuit.
Ignite leads improperly connected. Check igniter plugs for proper contact.
Igniter burned out.
Transformer circuit open. Check voltage. See drawings 620424 and 655354
IGNITE switch defective. Test switch for continuity. Replace if necessary.
Contamination of flow system: fuel and
air supplies, external pressure regulators, connecting tubing.
Pressure regulator(s) and/or pressure
gauge(s) clogged.
Water or condensate in burner or exhaust line.
Fuel and/or air filter clogged. Check filters; replace if necessary.
Plugged restrictor or capillary
Electrical elements of burner partially
short circuited by combustion products
Check valve in sample pump not functioning.
Obstruction in bypass outlet. Examine bypass outlet, remove obstruction.
Flame may be lifting above burner tip
(unusual condition).
Check readings on AIR and FUEL pressure
gauges. Adjust AIR pressure regulator to increase
or decrease air pressure slightly.
Constriction in fuel and/or air passage in burner jet,
restrictor, etc. Find cause of constriction and remove.
Remove cap from burner. Actuate IGNITE switch.
Igniter should glow red. If not, check the following
probable causes.
Replace igniter (glow plug) as shown in drawing
623190.
Replace fuel and/or air supply; clean or replace
tubing and regulators per Sections 2-5, page 2-2.
Clean or replace regulators and gauges.
Clean burner and exhaust line
Verify that fuel and air restrictors and sample capillary are open. An abnormally low background
signal, together with sensitivity loss, indicates
plugged restrictor. Note that flame will not light
unless fuel and air restrictors are open, but will not
light even though sample capillary is completely
closed.
Disassembly and clean burner, as explained in
Section 5-2a, page 5-2.
Examine check valve.
Connect a voltmeter from ground, as viewed with
door open. If flame is properly lit, the voltage will
be below 0.2 VDC. If voltage is high, readjust airfuel ratio to obtain proper ignition. Re-light burner
with richer fuel and air setting.
FUEL: 30 psig
AIR: 2 to 5 psig.
Table 5-1. Troubleshooting
Rosemount Analytical Inc. A Division of Emerson Process Management Service and Troubleshooting 5-5
Instruction Manual
748262-M
May 2002
Model 400A
5-6 Service and Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Model 400A
WARNING
Instruction Manual
748262-M
May 2002
SECTION 6
REPLACEMENT PARTS
PARTS INTEGRITY
Tampering with or unauthorized substitution of
components may adversely affect safety of this
product. Use only factory-approved components
for repair.
6-1 CIRCUIT BOARD REPLACEMENT POLICY
In most situations involving a malfunction of a
circuit board, it is more practical to replace the
board than to attempt isolation and replacement of the individual component. The cost of
test and replacement will exceed the cost of a
rebuilt assembly. As standard policy, rebuilt
boards are available on an exchange basis.
Because of the exchange policy covering circuit boards the following list does not include
individual electronic components. If circumstances necessitate replacement of an individual component which can be identified by
inspection or from the schematic diagrams,
obtain the replacement component from a local source of supply.
6-2 RECOMMENDED REPLACEMENT PARTS
LIST
655208 Board, Temperature Control
815187 Regulator, Sample
620423 Board , Preamp
888692 Regulator, Fuel/Air
655305 Heater in Fan Assembly
861984 Gauge, Fuel/Air
836482 Fan, Heater
617900 Glow Plug (Igniter)
621031 Cable, 16 Conductor
644055 Gauge, Sample
748262 Instruction Manual, 400A
(S/N 2000001 and up)
823484 Fuse, 2 AMP (115 VAC)
617902 Valve, Solenoid (Fuel Shutoff)
657545 Board, Flame-Out
620428 Board, Amplifier
621023 Board, Isolated Current Output, 4 to
20 mA
621017 Header
655178 Door, Clear Plastic
655203 Valve, Solenoid (Sample Shutoff)
(Option)
017154 Filter, Sample/Air
See drawing 623190 for listing of capillaries
and restrictors, and for Burner Parts List.
Rosemount Analytical Inc. A Division of Emerson Process Management Replacement Parts 6-1
Instruction Manual
748262-M
May 2002
6-3 MATRIX
Each analyzer is configured per the customer
sales order. Below is the CLD sales matrix
which lists the various configurations
available.
400A MODEL 400A HYDROCARBON ANALYZER
Code Seven Ranges with Remote Range Control, Range Multiplier: X1, X2.5, X10, X25, X100, X250, X1000
01 Seven ranges adjustable between 0-4 ppm through 0-1%
03 Seven ranges adjustable between 0-100 ppm through 0-10%
04 Seven ranges adjustable between 0-1 ppm through 0-2500 ppm (includes 100% H2 capillary)
99 Special
Code Output
01 Selectable, 0-100 mV, 0-1V, 0-5 VDC
02 Current, 4-20 mA Isolated
99 Special
Model 400A
To identify the configuration of an analyzer,
locate the analyzer name-rating plate. The
sales matrix identifier number appears on the
analyzer name-rating plate.
Code Operation
01 117V, 50/60 Hz
99 Special
Code Sample Line
01 Standard (Brass/Copper)
02 Standard with Sample Shutoff Valve
03 Stainless Steel
04 Stainless Steel with Sample Shutoff Valve
99 Special
Code Case
01 Standard
02 Standard w/Tropicalization
99 Special
Code Range Control/ID Options
01 Features as selected above
02 Seven isolated remote range control, range trim adjustment, range ID
99 Special
Code Off Range Alarm
01 Features as selected above
02 Single contact
99 Special
400A 04 01 01 03 02 02 01 Example
6-2 Replacement Parts Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA 2000 TO2
RETURN OF MATERIAL
Instruction Manual
748262-M
May 2002
SECTION 7
7-1 RETURN OF MATERIAL
If factory repair of defective equipment is
required, proceed as follows:
1. Secure a return authorization from a
Rosemount Analytical Inc. Sales Office or
Representative before returning the
equipment. Equipment must be returned
with complete identification in accordance
with Rosemount instructions or it will not
be accepted.
Rosemount CSC will provide the shipping
address for your instrument.
In no event will Rosemount be
responsible for equipment returned
without proper authorization and
identification.
2. Carefully pack the defective unit in a
sturdy box with sufficient shock absorbing
material to ensure no additional damage
occurs during shipping.
3. In a cover letter, describe completely:
• The symptoms that determined the
equipment is faulty.
• The environment in which the
equipment was operating (housing,
weather, vibration, dust, etc.).
• Site from where the equipment was
removed.
• Whether warranty or non-warranty
service is expected.
• Complete shipping instructions for the
return of the equipment.
4. Enclose a cover letter and purchase order
and ship the defective equipment
according to instructions provided in the
Rosemount Return Authorization, prepaid,
to the address provided by Rosemount
CSC.
Rosemount Analytical Inc.
Process Analytical Division
Customer Service Center
1-800-433-6076
If warranty service is expected, the defective
unit will be carefully inspected and tested at
the factory. If the failure was due to the
conditions listed in the standard Rosemount
warranty, the defective unit will be repaired or
replaced at Rosemount’s option, and an
operating unit will be returned to the customer
in accordance with the shipping instructions
furnished in the cover letter.
For equipment no longer under warranty, the
equipment will be repaired at the factory and
returned as directed by the purchase order
and shipping instructions.
7-2 CUSTOMER SERVICE
For order administration, replacement Parts,
application assistance, on-site or factory
repair, service or maintenance contract
information, contact:
Rosemount Analytical Inc.
Process Analytical Division
Customer Service Center
1-800-433-6076
7-3 TRAINING
A comprehensive Factory Training Program of
operator and service classes is available. For
a copy of the Current Operator and Service
Training Schedule contact the Technical
Services Department at:
Rosemount Analytical Inc.
Customer Service Center
1-800-433-6076
Rosemount Analytical Inc. A Division of Emerson Process Management Return of Material 7-1
Instruction Manual
748262-M
May 2002
Model 400A
7-2 Return of Material Rosemount Analytical Inc. A Division of Emerson Process Management
WARRANTY
Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from
defects in workmanship and material under normal use and service for a period of twelve (12)
months from the date of shipment by Seller. Consumables, glass electrodes, membranes, liquid
junctions, electrolyte, o-rings, etc., are warranted to be free from defects in workmanship and
material under normal use and service for a period of ninety (90) days from date of shipment by
Seller. Goods, part(s) and consumables proven by Seller to be defective in workmanship and/or
material shall be replaced or repaired, free of charge, F.O.B. Seller's factory provided that the
goods, part(s) or consumables are returned to Seller's designated factory, transportation charges
prepaid, within the twelve (12) month period of warranty in the case of goods and part(s), and in
the case of consumables, within the ninety (90) day period of warranty. This warranty shall be in
effect for replacement or repaired goods, part(s) and the remaining portion of the ninety (90) day
warranty in the case of consumables. A defect in goods, part(s) and consumables of the
commercial unit shall not operate to condemn such commercial unit when such goods, part(s)
and consumables are capable of being renewed, repaired or replaced.
The Seller shall not be liable to the Buyer, or to any other person, for the loss or damage directly
or indirectly, arising from the use of the equipment or goods, from breach of any warranty, or from
any other cause. All other warranties, expressed or implied are hereby excluded.
IN CONSIDERATION OF THE HEREIN STATED PURCHASE PRICE OF THE GOODS,
SELLER GRANTS ONLY THE ABOVE STATED EXPRESS WARRANTY. NO OTHER
WARRANTIES ARE GRANTED INCLUDING, BUT NOT LIMITED TO, EXPRESS AND IMPLIED
WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Limitations of Remedy. SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED BY
DELAY IN PERFORMANCE. THE SOLE AND EXCLUSIVE REMEDY FOR BREACH OF
WARRANTY SHALL BE LIMITED TO REPAIR OR REPLACEMENT UNDER THE STANDARD
WARRANTY CLAUSE. IN NO CASE, REGARDLESS OF THE FORM OF THE CAUSE OF
ACTION, SHALL SELLER'S LIABILITY EXCEED THE PRICE TO BUYER OF THE SPECIFIC
GOODS MANUFACTURED BY SELLER GIVING RISE TO THE CAUSE OF ACTION. BUYER
AGREES THAT IN NO EVENT SHALL SELLER'S LIABILITY EXTEND TO INCLUDE
INCIDENTAL OR CONSEQUENTIAL DAMAGES. CONSEQUENTIAL DAMAGES SHALL
INCLUDE, BUT ARE NOT LIMITED TO, LOSS OF ANTICIPATED PROFITS, LOSS OF USE,
LOSS OF REVENUE, COST OF CAPITAL AND DAMAGE OR LOSS OF OTHER PROPERTY
OR EQUIPMENT. IN NO EVENT SHALL SELLER BE OBLIGATED TO INDEMNIFY BUYER IN
ANY MANNER NOR SHALL SELLER BE LIABLE FOR PROPERTY DAMAGE AND/OR THIRD
PARTY CLAIMS COVERED BY UMBRELLA INSURANCE AND/OR INDEMNITY COVERAGE
PROVIDED TO BUYER, ITS ASSIGNS, AND EACH SUCCESSOR INTEREST TO THE GOODS
PROVIDED HEREUNDER.
Force Majeure. Seller shall not be liable for failure to perform due to labor strikes or acts beyond
Seller's direct control.
Instruction Manual
748262-M
May 2002
Model 400A
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 gas.csc@emersonprocess.com
ASIA - PACIFIC
Fisher-Rosemount
Singapore Private Ltd.
1 Pandan Crescent
Singapore 128461
Republic of Singapore
T 65-777-8211
F 65-777-0947
http://www.processanalytic.com
© Rosemount Analytical Inc. 2001
Fisher-Rosemount GmbH & Co.
Industriestrasse 1
63594 Hasselroth
Germany
T 49-6055-884 0
F 49-6055-884209
EUROPE, MIDDLE EAST, AFRICA
Fisher-Rosemount Ltd.
Heath Place
Bognor Regis
West Sussex PO22 9SH
England
T 44-1243-863121
F 44-1243-845354
LATIN AMERICA
Fisher - Rosemount
Av. das Americas
3333 sala 1004
Rio de Janeiro, RJ
Brazil 22631-003
T 55-21-2431-1882
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