Instruction Manual
081854-R
May 2002
Model 340
Trace Moisture Analyzer
http://www.processanalytic.com
ESSENTIAL INSTRUCTIONS
READ THIS PAGE BEFORE PROCEEDING!
Rosemount Analytical designs, manufactures and tests its products to meet many national and
international standards. Because these instruments are sophisticated technical products, you
MUST properly install, use, and maintain them to ensure they continue to operate within their
normal specifications. The following instructions MUST be adhered to and integrated into your
safety program when installing, using, and maintaining Rosemount Analytical products. Failure to
follow the proper instructions may cause any one of the following situations to occur: Loss of life;
personal injury; property damage; damage to this instrument; and warranty invalidation.
• Read all instructions prior to installing, operating, and servicing the product.
• If you do not understand any of the instructions, contact your Rosemount Analytical 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.
Viton® is a registered trademark of E.I. duPont de Nemours and Co., Inc.
Freon12® is a registered trademark of E.I. duPont de Nemours and Co., Inc.
SNOOP
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
®
is a registered trademark of NUPRO Co.
Model 340
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 Overview................................................................................................................................1-1
1-2 Instrument Configurations .....................................................................................................1-1
1-3 Sample Gases .......................................................................................................................1-4
a. Suitable Sample Gases ..................................................................................................1-4
b. Unsuitable Sample Gases ..............................................................................................1-4
1-4 Specifications ........................................................................................................................1-5
a. Performance....................................................................................................................1-5
b. Alarm Option (panel mount analyzers only)....................................................................1-5
c. Sample ............................................................................................................................1-5
Instruction Manual
081854-R
May 2002
TABLE OF CONTENTS
2-0 INSTALLATION ....................................................................................................................2-1
2-1 Facility Preparation................................................................................................................2-1
a. Outline and Mounting Dimensions ..................................................................................2-1
b. Interconnection Diagram (Explosion Proof Analyzers Only)...........................................2-1
c. Location...........................................................................................................................2-1
d. Utility Specifications ........................................................................................................2-1
2-2 Unpacking..............................................................................................................................2-2
2-3 Electrical Connections ...........................................................................................................2-2
a. Output Selection and Cable Connections for Potentometric Recorder ..........................2-5
b. Output Selection and Cable Connections for Current Recorder (AC Analyzers Only)...2-6
c. Alarm Output Connection and Alarm Function Selection (Optional, for Panel
Mounted Analyzers Only)................................................................................................2-7
d. Setting the Deadband .....................................................................................................2-8
e. Electrical Interconnection for Explosion Proof Analyzer .................................................2-8
f. Electrical Power Connection ...........................................................................................2-8
2-4 Sample Connections and Sample Handling recommendations ............................................2-9
2-5 Purge Connections and Requirements .................................................................................2-10
3-0 OPERATING CONTROLS AND INDICATORS....................................................................3-1
3-1 Range Selector Switch and Meter.........................................................................................3-1
3-2 Sample Flow Control Valve and Sample Flowmeter.............................................................3-1
3-3 Bypass Flow Control Valve and Bypass Flowmeter..............................................................3-1
3-4 Controls of Alarm Setpoint Accessory (Panel Mount Analyzers Only).................................3-1
Rosemount Analytical Inc. A Division of Emerson Process Management Contents i
Instruction Manual
081854-R
May 2002
4-0 STARTUP..............................................................................................................................4-1
4-1 Systems Utilizing Pressurized Gas Sample ..........................................................................4-1
a. Initial Dry-Down...............................................................................................................4-1
b. System Leak Check ........................................................................................................4-3
c. Instrument Calibration .....................................................................................................4-4
d. Computation of Sample Flowmeter Settings ..................................................................4-4
e. Pressure (Elevation) Corrections To Computed Flowmeter Values ...............................4-6
f. Experimental Calibration of Sample Flowmeter..............................................................4-6
g. Temperature Corrections (Portable Analyzers Only)......................................................4-7
4-2 systems utilizing the low pressure sampling accessory ........................................................4-8
a. Calibration Procedure for Sample Flowmeter.................................................................4-9
b. Operating Parameter Selection.......................................................................................4-10
Vacuum Reading.............................................................................................................4-10
Sample Flowmeter Setting..............................................................................................4-10
c. Setup for Normal Operation ............................................................................................4-11
5-0 OPERATION .........................................................................................................................5-1
5-1 Recommended Calibration Frequency..................................................................................5-1
5-2 Shutdown...............................................................................................................................5-1
Model 340
6-0 THEORY................................................................................................................................6-1
6-1 Principle of Operation ............................................................................................................6-1
6-2 Flow System ..........................................................................................................................6-1
6-3 Electronic Circuitry.................................................................................................................6-3
a. Electrolytic Call and Switch Assembly (All Analyzers)....................................................6-3
b. Amplifier Circuit Board (All Analyzers)............................................................................6-3
c. Current Output Board (Optional for AC Analyzers Only) ................................................6-4
d. ±15 Volt Power Supply (AC Analyzers Only)..................................................................6-5
e. Alarm Setpoint Accessory and Universal Alarm Board (Optional, for Panel Mount
Analyzers Only)...............................................................................................................6-5
7-0 MAINTENANCE AND SERVICE ..........................................................................................7-1
7-1 Maintenance ..........................................................................................................................7-1
a. Care of the Electrolytic Cell.............................................................................................7-1
b. Replacing Electrolytic Cell ..............................................................................................7-1
c. Cleaning and Re-sensitizing Electrolytic Cell, Using PN 642257 Kit ..............................7-1
7-2 Service...................................................................................................................................7-3
a. Subnormal or Zero Meter Reading .................................................................................7-3
b. Off-Scale Meter Reading ................................................................................................7-3
c. Erratic Meter Reading .....................................................................................................7-3
8-0 REPLACEMENT PARTS ......................................................................................................8-1
8-1 Matrix .....................................................................................................................................8-1
8-2 Circuit Board Replacement Policy .........................................................................................8-2
8-3 Selected Replacement Parts.................................................................................................8-2
a. Door Assembly – Panel Mount Instruments ...................................................................8-3
b. Chassis Assembly...........................................................................................................8-4
c. 193005 Portable AC Trace Moisture Analyzer ...............................................................8-6
d. 194772 Flowmeter Accessory.........................................................................................8-8
ii Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
9-0 RETURN OF MATERIAL ......................................................................................................9-1
9-1 Return Of Material .................................................................................................................9-1
9-2 Customer Service ..................................................................................................................9-1
9-3 Training..................................................................................................................................9-1
Figure 1-1. Panel Mounted Trace Moisture Analyzer .............................................................. 1-2
Figure 1-2. Explosion-Proof Trace Moisture Analyzer ............................................................. 1-2
Figure 1-3. Portable Trace Moisture Analyzer and Flowmeter Accessory............................... 1-3
Figure 2-1. Interior of Panel Mount Analyzer ........................................................................... 2-2
Figure 2-2. Interior of Explosion Proof Analyzer ...................................................................... 2-3
Figure 2-3. Amplifier Board – Location of Selector Plugs ........................................................ 2-3
Figure 2-4. Current Output Board - Location of Selector Plugs ............................................... 2-4
Figure 2-5. Universal Alarm Board (PN 193913) - Locations of Alarm Selector Plugs............ 2-4
Figure 2-6. Universal Alarm Board (PN 620695) – Location of Alarm Select Jumpers and
Figure 2-7. Connections for Potentiometric Recorder with Intermediate Span........................ 2-6
Figure 2-8. Installation of Purge Kit........................................................................................ 2-10
Figure 3-1. Operating Controls of Model 340 Panel Mount Analyzer ...................................... 3-2
Figure 3-2. Operating Controls of Explosion Proof Analyzer ................................................... 3-3
Figure 3-3. Operating Controls of the Portable Analyzer and Flowmeter Accessory .............. 3-3
Figure 4-1. Interconnection of Low Pressure Analysis System................................................ 4-8
Figure 5-1. Ice Point vs. Parts-Per-Million H
Figure 6-1. Schematic Diagram of Internal Flow System......................................................... 6-2
Figure 8-1. 194782 Door Assembly – Panel Mount Instrument............................................... 8-3
Figure 8-2. Chassis Assembly ................................................................................................. 8-5
Figure 8-3. 193005 Portable AC Trace Moisture Analyzer ...................................................... 8-7
Figure 8-4. 194772 Flowmeter Accessory ............................................................................... 8-8
Instruction Manual
081854-R
May 2002
LIST OF ILLUSTRATIONS
Deadband Adjustment Potentiometer.................................................................... 2-5
O by Volume...................................................... 5-3
2
LIST OF TABLES
Table 2-1. Accessory Devices for Sample Pressure Ranges............................................... 2-11
Table 4-1. Typical Settings for Sample Flowmeter ................................................................. 4-4
Table 4-2. Normal Barometric Pressures for Various Elevations ........................................... 4-5
Table 5-1. Conversion Factors for Water Vapor Concentrations............................................ 5-2
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Instruction Manual
081854-R
May 2002
193136 Installation Drawing - Model 340 Panel Mount
194745 Pictorial Wiring Diagram - Trace Moisture Analyzer, Portable AC
194749 Schematic Diagram - Portable DC
194754 Schematic Diagram - Trace Moisture Analyzer (sheet 1 only)
194757 Schematic Diagram - Trace Moisture Analyzer, Portable AC
194759 Interconnect Diagram - Trace Moisture Analyzer, Explosion Proof
194760 Schematic Diagram, Alarm Setpoint Assembly (sheet 3 only)
194761 Pictorial Wiring Diagram - Trace Moisture Analyzer, Panel Mount
194771 Board Assembly, Battery Pack
194775 Installation Drawing - Model 340 Portable
194789 Installation Drawing - Model 340 Explosion Proof
619710 Schematic Diagram - ±15V Power Supply
620696 Schematic Diagram - Universal Alarm
624265 Board Assembly, Amplifier (sheet 2 only)
654443 Schematic Diagram, Current Output Board
780213 Schematic Diagram, 230 VAC Operation
780796 Pictorial Wiring Diagram, 230 VAC Operation
Model 340
LIST OF DRAWINGS
iv Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
The purpose of this manual is to provide information concerning the components,
functions, installation and maintenance of the Model 340.
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.
Some sections pertain to models that are no longer available. This information is included
for those instruments still in use.
Read and understand this instruction manual completely.
Instruction Manual
081854-R
May 2002
PREFACE
DEFINITIONS
The following definitions apply to DANGERS, WARNINGS, CAUTIONS and NOTES found throughout
this publication.
DANGER .
Highlights the presence of a hazard which will cause severe personal injury, death, or substantial
property damage if the warning is ignored.
WARNING .
Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not
strictly observed, could result in injury, death, or long-term health hazards of personnel.
CAUTION.
Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not
strictly observed, could result in damage to or destruction of equipment, or loss of effectiveness.
NOTE
Highlights an essential operating procedure,
condition or statement.
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-1
Instruction Manual
081854-R
May 2002
SAFETY SUMMARY
If this equipment is used in a manner not specified in these instructions, protective systems
may be impaired.
AUTHORIZED PERSONNEL
To avoid explosion, loss of life, personal injury and damage to this equipment and on-site
property, all personnel authorized to install, operate and service the this equipment should be
thoroughly familiar with and strictly follow the instructions in this manual. SAVE THESE
INSTRUCTIONS.
DANGER.
Model 340
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.
Alarm switching relay contacts wired to a separate power source must be disconnected before
servicing.
WARNING.
POSSIBLE EXPLOSION HAZARD
This analyzer is of a type capable of analysis of sample gases which may be flammable. If used for
analysis of such gases, the detection section of the analyzer must be either in an explosion proof
enclosure suitable for the hazard classification of the gas, or protected by a continuous dilution
purge system in accordance with Standard ANSI/NFPA-496-1986 (Chapter 8) or IEC Publication 792-1983 (Section Three).
If explosive gases are introduced into this analyzer, the sample containment system must be carefully leak checked upon installation and before initial startup, during routine maintenance and any
time the integrity of the sample containment system is broken, to ensure that the system is in leak
proof condition. Leak check instructions are provided in Section 4-1b, page 4-3.
Internal leaks resulting from failure to observe these precautions could result in an explosion,
causing death, personal injury or property damage.
P-2 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
Model 340
WARNING.
HIGH PRESSURE GAS CYLINDERS
Fuel, air and calibration gas cylinders are under pressure. Mishandling of gas cylinders could result in death, injury or property damage. See General Precautions for Handling and Storing High
Pressure Cylinders, page P-4.
CAUTION
PARTS INTEGRITY
Tampering or unauthorized substitution of components may adversely affect safety of this product.
Use only factory documented components for repair.
.
081854-R
May 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-3
Instruction Manual
081854-R
May 2002
Model 340
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 340
DOCUMENTATION
The following Model 340 instruction materials are available. Contact Customer Service Center or the local
representative to order.
081854 Instruction Manual (this document)
081854-R
May 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-5
Instruction Manual
081854-R
May 2002
Model 340
P-6 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
Instruction Manual
081854-R
May 2002
SECTION 1
DESCRIPTION AND SPECIFICATIONS
1-1 OVERVIEW
The Model 340 Trace Moisture Analyzer
automatically and continuously measures water
vapor concentrations, up to a maximum of 1000
ppm, in a gaseous sample stream. The
determination is based on the simultaneous
absorption and electrolysis of water. The
instrument has a wide range of applications, in
monitoring many gases used in manufacturing
processes. (Suitable and unsuitable sample
gases are listed in Section 1-3, page 1-4.)
Permissible sample pressure range for the
standard instrument is 10 to 100 psig. Optional
sampling accessories permit monitoring gas
streams at atmospheric or sub-atmospheric
pressures.
The analyzer provides direct readout on a front
panel meter and a selectable output for an
accessory potentiometric recorder. With all AC
operated versions of the analyzer, a selectable
output for a current type recorder is obtainable
through use of an optional plug in the circuit
board.
2. The 193004 Explosion Proof Analyzer,
Figure 1-2 on page 1-2.
NOTE
The Model 340 TMA Explosion Proof (PN
193004) is no longer available.
Designed for use in the chemical,
petrochemical, and petroleum
industries, in applications where the
sample stream contains flammable
gases, or where explosive vapors may
be present at the installation site.
Control section is similar to that of the
Panel Mounted Analyzer. Detector
section is contained in an explosion
proof housing that meets the
requirements for installation under
hazardous conditions specified as Class
1, Group D, Division 1, in the National
Electrical Code. Flow system is of
stainless steel.
3. Portable Analyzer, Figure 1-3 on page
1-3.
1-2 INSTRUMENT CONFIGURATIONS
The Model 340 Analyzer is made in the
following configurations:
1. Panel Mounted Analyzer, Figure 1-1 on
page 1-2, with detector, electronic circuitry,
and operating controls housed in a single
purgeable case. Available with internal flow
system of either stainless steel (193000
Analyzer) or brass (193001 Analyzer).
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-1
The Model 340 TMA Portable (PN 193005)
is no longer available.
Available for operation on either 115
VAC, 50/60 Hz (193005 Analyzer) or
±15 VDC from a self contained battery
pack (193006 Analyzer).
Except where specifically stated otherwise,
information in this manual applies to all
versions of the instrument.
NOTE
Instruction Manual
081854-R
May 2002
Alarm Setpoint
Accessory
Model 340
Note: Illustration applicable to part numbers 193000 and 193001 Analyzers
Figure 1-1. Panel Mounted Trace Moisture Analyzer
Alarm Setpoint
Accessory
Detector Section Control Section
Note: This instrument is no longer available – Consult Factory
Figure 1-2. Explosion-Proof Trace Moisture Analyzer
1-2 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
Instruction Manual
081854-R
May 2002
Notes: Illustration applicable to part numbers 193005 and 193006 Analyzers
This instrument is no longer available – Consult Factory
Figure 1-3. Portable Trace Moisture Analyzer and Flowmeter Accessory
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-3
Instruction Manual
081854-R
May 2002
Model 340
1-3 SAMPLE GASES
WARNING
POSSIBLE EXPLOSION HAZARD
This analyzer is of the type capable of
analysis of sample gases which may be
flammable. If used for analysis of such
gases, the detection section of the analyzer must be either in an explosion proof
enclosure suitable for the hazardous classification of the gas , or, protected by a
continuous dilution purge system in accordance with Standard ANSI /N FPA-496
-1986 (Chapter 8) or IEC Publication
79-2-1983 (Section Three).
If explosive gases are introduced into this
analyzer, the sample containment system
must be carefully leak checked upon installation and before initial startup, during
routine maintenance and any time the integrity of the sample containment system
is broken, to ensure that the system is in
leak proof condition. Leak check instructions are provided in Section 4-1b on page
4-3.
Internal leaks resulting from failure to observe these precautions could result in an
explosion causing death, personal injury
or property damage.
Determination of whether a sample stream of
a particular composition is suitable for
monitoring depends on its compatibility with
the construction materials in a) the detector
cell, and b) the instrument flow system. In all
instruments, the detector cell utilizes a thin
film of phosphorous pentoxide (P
rhodium electrodes. Depending on the
intended application of a given instrument
version, its internal flow system is constructed
of either stainless steel (for corrosion
resistance) or brass (for non-corrosive sample
gases only).
2O6
) on
a. Suitable Sample Gases
Elemental Gases
Argon, Helium, Neon, Nitrogen, Oxygen,
Hydrogen.
Inorganic Gaseous Mixtures and
Compounds
Air, Carbon Dioxide, Carbon Monoxide,
Sulphur Dioxide, Sulphur Hexafluoride.
Organic Gaseous Compounds
Butane, Ethane, Freon 12 , Methane,
Propane, Halogenated Hydrocarbons.
b. Unsuitable Sample Gases
Gases that react with P206 to produce
additional water
Example: alcohols, HF.
Gases that react with construction
materials of the instrument
Gases that react with P
2O6
to alter
required absorption characteristics of
the P
2O6
film
Examples: ammonia, amines.
Gases that polymerize to form a solid
or liquid phase (they gradually
desensitize the detector cell by coating
or clogging)
Example: Unsaturated hydrocarbons alkynes, alkadienes and alkenes.
Gases that contain particulate solid or
liquid materials such as dust and dirt
found in furnace atmosphere gases.
These must be avoided or filtered out
upstream; oil mist or dust from some
types of dryers can clog the detector cell
or desensitize the P
film by forming a
2O6
layer over the film.
1-4 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
1-4 SPECIFICATIONS
a. Performance
Instruction Manual
081854-R
May 2002
Ranges .......................................... 0 to 10, 0 to 50, 0 to 100, 0 to 500, 0 to 1000 ppm H
Accuracy........................................ ±5% of fullscale (not applicable to 0 to 10 ppm range or to
hydrogen or oxygen sample stream containing less than 25 ppm
H
2O
Sensitivity ...................................... Less than 1 ppm
Bypass Flow .................................. Adjustable of 0 to 2 cubic feet per hour (940 cc/min.) is standard in
non-portable instruments, and is obtainable for portable
instruments through use of optional flowmeter accessory
Ambient Temperature.................... 0°F to 120°F (-18°C to 49°C)
Recorder Potentiometric Output.... All analyzers provide selectable output of 0 to 10 mV, 0 to 100 mV,
0 to 1 V, or 0 to 5 V
Recorder Current Output Option (for AC power analyzers only)
Plug-in circuit board provides 4 selectable outputs:
Output (mA) Maximum Permissible Load (ohms)
0 to 5 800
1 to 5 8000
4 to 20 2000
10 to 50 700
b. Alarm Option (panel mount analyzers only)
Setpoint Accuracy ......................... ±1/2 of fullscale, or 25 mV
Repeatability.................................. 1% of fullscale
Setpoint Range.............................. 0 to 100% or 0 to 5 VDC, displayed on front panel meter
Hysteresis...................................... 2% of fullscale is standard, adjustable by changing resistor on
circuit board
Output............................................ (1) isolated (2) 190 VDC or VAC maximum, (3) 1.5 amperes AC or
DC maximum
O by volume
2
c. Sample
Sample Flow Rate ......................... 100 cc/minute
Sample Pressure........................... Standard range 10 to 100 psig (69 to 690 kPa).
Low Pressure Sampling Accessory provides range of 10 inches
mercury vacuum to +10 psig.
Sample Temperature..................... 32°F to 120°F (0°C to 80°C)
Sample Inlet/Outlet Connections... 1/8 inch bulkhead tube fittings (Double ferrule compression type)
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-5
Instruction Manual
081854-R
May 2002
Model 340
1-6 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
Instruction Manual
081854-R
May 2002
SECTION 2
INSTALLATION
Sections 2-1a through 2-1d provide information that
may be required prior to installation.
2-1 FACILITY PREPARATION
a. Outline and Mounting Dimensions
For significant dimensions of the
instrument, refer to the appropriate
Drawing at the back of the manual.
b. Interconnection Diagram (Explosion
Proof Analyzers Only)
Drawing 194759 shows electrical
interconnection for the 193004 Explosion
Proof Analyzer.
NOTE
Separate conduits should be used for
the power cable and the interconnection cable.
c. Location
193000 and 193001 Panel Mounted
Analyzers
Install in a clean area, not subject to
excessive vibration or extreme
temperature variations. Preferably, the
instrument should be mounted near the
sample stream, to minimize transport
time.
193004 Explosion Proof Analyzer
Detector Section: Criteria for installation
site are proximity to sample point,
protection from environment, and
accessibility for servicing. Protect the unit
adequately against shock and extreme
vibration.
Control Section: Principal criteria for the
installation site is that it must be outside
the hazardous area. Hazardous locations
are defined in Article 500 of the National
Electrical Code. An additional
consideration is convenience in taking
readings and servicing the unit.
Ambient temperature range for all
analyzers is 0°F to 120°F (-18°C to 49°C).
Additional requirements, specific to the
various analyzer configurations, are given
in the following:
193000 and 193001 Panel Mounted Analyzers
193004 Explosion Proof Analyzer
193005 Portable Analyzer 107 to 127 VAC, 50/60 Hz, 20 watts
193006 Portable Analyzer ± 15 VDC from self contained battery pack
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-1
d. Utility Specifications
Electrical power requirements are listed in
the following table:
107 to 127 VAC
50/60 Hz, 80 watts
Instruction Manual
081854-R
May 2002
Model 340
2-2 UNPACKING
Examine the shipping carton and contents
carefully for any signs of damage. Save the
carton and packing material until the analyzer
is operational. If carton or contents damage
(either external or concealed) is discovered,
notify the carrier immediately.
2-3 ELECTRICAL CONNECTIONS
Depending on the particular options used,
electrical setup may entail insertion of various
selector plugs into appropriate positions in the
associated circuit boards. Locations of circuit
boards and other components within the
several analyzer configurations are shown in
Figure 2-1 below and Figure 2-2 on page 2-3.
Locations of selector plugs on the individual
board are shown in Figure 2-3 on page 2-3,
Figure 2-4 on page 2-4, Figure 2-5 on page 24, and Figure 2-6 on page 2-5. Make
electrical connections in the following
sequence:
1. If a recorder is to be used, select the
particular output required and make the
appropriate cable connections as
explained in Section 2-3a on page 2-5
(potentiometric recorder) or Section 2-3b
on page 2-6 (current recorder). All
analyzers provide potentiometric output.
Current output is obtainable from AC
operated instruments only, through use of
the optional current output circuit board.
2. If an alarm system is to be used, select
the desired function and connect the
output as explained in Section 2-3c on
page 2-7. Alarm output is obtainable from
panel mounted instruments only, through
use of the Alarm Setpoint Accessory and
Universal Alarm Board in combination.
3. With Explosion Proof Analyzer,
interconnect detector and control modules
per Section 2-3e on page 2-8.
4. Supply electrical power to analyzer per
Section 2-3f on page 2-8.
TB1 TB2
Partial view of inside door
±15V Power Supply
Alarm Setpoint Accessory
J5 (shorting plug shown)
Universal Alarm Board
Amplifier Board
Cell Holder
Figure 2-1. Interior of Panel Mount Analyzer
Sample Flowmeter
Bypass Flowmeter
2-2 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
Instruction Manual
081854-R
May 2002
Figure 2-2. Interior of Explosion Proof Analyzer
CUR.
BD.
YES
NO
10 MV
100 MV
1V
5V
Current Board
Yes/No
Potentiometric Output
Figure 2-3. Amplifier Board – Location of Selector Plugs
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-3
Instruction Manual
081854-R
May 2002
Recorder Milliampere
Selector Plug Assembly
Live Zero/Dead Zero
Selector
Model 340
-
LIVE ZERO DEAD
Note: The Current Output Board is an option for AC Analyzers only.
Figure 2-4. Current Output Board - Location of Selector Plugs
Normally Open/Normally Closed
Selector Plug for High Level Alarm
Function.
Low level alarm function not used.
LOW
N.C.
N.O.
N.C.
N.O.
HI
Figure 2-5. Universal Alarm Board (PN 193913) - Locations of Alarm Selector Plugs
2-4 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
Instruction Manual
081854-R
May 2002
Alarm Selection
Deadband Adjustment
Figure 2-6. Universal Alarm Board (PN 620695) – Location of Alarm Select Jumpers and Deadband
Adjustment Potentiometer
a. Output Selection and Cable
Connections for Potentometric
Recorder
To use a potentiometric recorder:
1. At multi-pin receptacle on amplifier
circuit board, Figure 2-3 on page 2-3,
insert two shorting plugs as follows:
a. Insert plug between pair of pins
designated NO in area marked
CUR. BD. YES/NO. (This
connection routes amplifier output
signal through voltage divider, as
explained in Section 6-3c on page
6-4.)
b. Insert plug between pair of pins
with labeled designation that
corresponds to desired output.
Options are 10 mV, 100 mV, 1
volt, and 5 volts.
2. Connect appropriate leads of shielded
recorder cable to POT. REC. and
terminals, and SHLD terminal, on
output terminal strip.
3. Connect recorder end of output cable
as required for the particular recorder
span:
a. For recorder with span of 10 mV,
100 mV, 1 volt, or 5 volts, connect
cable directly to recorder input
terminals, making sure polarity is
correct.
b. For recorder with an intermediate
span, i.e., between the specified
values, connect cable to recorder
via a suitable external voltage
divider, as shown in Figure 2-7 on
page 2-6.
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-5
Instruction Manual
081854-R
May 2002
Model 340
R2
R1
Output Cable From
Trace Moisture Analyzer
Voltage Divider
(Customer Supplied)
Output Selected on
Amplifier Board
10 MV
100 MV
1V
5V
Example:
To permit use of 50 mv recorder, 100 mv output is selected on Amplifier
Board; 500 ohm resistors are used for R1 and R2.
Figure 2-7. Connections for Potentiometric Recorder with Intermediate Span
Min. Permissible
Resistance R1 plus R2
100 ohms
1,000 ohms
10,000 ohms
50,000 ohms
Input
Terminals
Potentiometric
Recorder
b. Output Selection and Cable
Connections for Current Recorder
(AC Analyzers Only)
To use a current recorder:
1. Connect appropriate leads of shielded
recorder cable to CUR. REC. and "-"
terminals, and SHLD terminal, on
output terminal strip. For location of
terminal strip, refer to appropriate
Recorder Span (ma) Maximum Permissible Load (ohms)
0 to 5 800
1 to 5 8000
4 to 20 2000
10 to 50 700
2-6 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
illustration of Figure 2-1 through
Figure 2-6.
2. Connect recorder end of output cable
to recorder input terminals, making
sure polarity is correct.
NOTE
Combined resistance of recorder and
associated interconnection cable must
not exceed value in following table.
Model 340
Instruction Manual
081854-R
May 2002
3. At multi-pin receptacle on amplifier
circuit board, Figure 2-3 on page 2-3,
insert shorting plug between pair of
pins designated YES in area marked
CUR. BD. YES/NO. (This connection
routes amplifier output signal through
current output board.)
4. Verify that current output board is
properly in place in its connector.
5. On current output board, Figure 2-4 on
page 2-4, insert two plugs in their
receptacle, in the position appropriate
to the desired recorder:
a. Live Zero/Dead Zero Selector: For
0 to 5 mA recorder, orient plug so
its arrow points to end of
receptacle labeled DEAD. For 1 to
5, 4 to 20, or 10 to 50 ma recorder,
orient plug so arrow points to end
labeled LIVE.
b. Recorder Milliampere Selector:
Orient plug so that the side with
the labeled designation
corresponding to the desired ma
current range faces outward, and
covers the REC MA label on the
current output board. Sides of plug
are labeled 0-5, 1 -5, 4-20, and
10-50.
c. Alarm Output Connection and Alarm
Function Selection (Optional, for
Panel Mounted Analyzers Only)
The optional Alarm Setpoint Accessory
and Universal Alarm Board are used in
combination to provide an alarm output
that actuates an external, customer
supplied alarm and, or process control
device whenever the water vapor
concentration of the sample stream
exceeds a pre-selected level.
If so specified, the analyzer is factory
assembled to include the Alarm Setpoint
Accessory and Universal Alarm Board.
Alternatively, these two items are
obtainable in the form of the 630695
Alarm Kit, intended for subsequent
installation in an analyzer not originally
equipped with alarm function.
Setup procedure for alarm systems is
described in the following steps. If internal
alarm components have been installed
previously in the analyzer, proceed
directly to Step 4; otherwise, first perform
Steps 1 through 3.
1. Mount Alarm Setpoint Accessory in
cutout in analyzer door. Refer to
appropriate illustration of Figure 1-1
through Figure 1-3.
2. Refer to Figure 2-1 on page 2-2. At
receptacle J5 remove shorting plug.
Insert plug P5 of multi-conductor cable
from Alarm Setpoint Accessory into J5.
3. Insert Universal Alarm Board into
corresponding connector. Refer to
appropriate illustration of Figure 2-1, or
Figure 2-2.
4. Connect input leads from external
alarm system to ALARM OUTPUT
terminals on terminal strip TB1. For
location of terminal strip, refer to
appropriate illustration of Figure 2-1 or
Figure 2-2.
5. At multi-pin receptacle on universal
alarm board, Figure 2-5 on page 2-4 or
Figure 2-6 on page 2-5, insert the
function jumper in the position
appropriate to the desired alarm
function.
a. If ALARM OUTPUT terminals are
to provide a normally open circuit,
place jumper El in the A, B
position. The ALARM OUTPUT
circuit will now close when water
vapor content exceeds preselected level.
b. If ALARM OUTPUT terminals are
to provide a normally closed circuit
(as in a fail-safe system), insert
jumper El in the C, D position. The
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-7
Instruction Manual
081854-R
May 2002
Model 340
ALARM OUTPUT circuit will now
open when water vapor content
exceeds the pre-selected level
NOTE
In Trace Moisture Analyzers, the LOW
N.O. and LOW N.C. positions are normally not used.
Selection of the desired alarm setpoint is
explained in Section 3-4 on page 3-1.
d. Setting the Deadband
The desired deadband may be set with
the appropriate adjustment of R4 on the
Universal Alarm Board (Figure 2-6 on
page 2-5). The deadband may be
adjusted from 2% of fullscale
(counterclockwise limit) to 10% of
fullscale (clockwise limit).
e. Electrical Interconnection for
Explosion Proof Analyzer
Interconnect detector and control modules
as shown in Drawing 194759. The PN
835495 Interconnection Cable is supplied,
as ordered, in any desired length up to a
maximum of 1000 feet (305 M).
Within the detector module, a user
supplied 14 gauge ground lead must be
connected to the marked ground terminal
and securely attached to a suitable earth
ground.
CAUTION
The explosion proof detector module must
be wired in accordance with the requirements of the National Electrical Code
(NEC) (NFPA No. 70) for Class 1, Group D,
Division 1 hazardous locations, especially
Sections 501 -4 and 501 -5, and any other
applicable national and/or local codes.
f. Electrical Power Connection
DANGER
ELECTRICAL SHOCK HAZARD
For safety and proper performance AC instruments must be connected to a properly grounded three wire source of
electrical power.
AC Analyzers. Connect to an AC source
of 107 to 127 volts, either 60 ±0.5 Hz or
50 ±0.5 Hz Panel mounted instruments
require field wiring by installer. Portable
AC analyzer has integral North American
3 prong power cord. If power outlet does
not have third (ground) contact, use an
adapter to provide proper grounding.
Portable DC Analyzer. Insert battery
pack in place.
2-8 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 340
Instruction Manual
081854-R
May 2002
2-4 SAMPLE CONNECTIONS AND SAMPLE
HANDLING RECOMMENDATIONS
Locations of sample inlet and outlet ports in
the various analyzer configurations are shown
in the engineering drawings located at the
back of the manual. All analyzers have 1/8
inch bulkhead, compression type tubing
fittings.
A suitable gas handling system is required to
deliver sample to the analyzer at the proper
pressure and flow rate. Acceptable sample
pressure range for the standard analyzer is 10
to 100 psig. A sample pressure outside this
range necessitates installation of an
appropriate accessory. Refer to Table 2-1.
Accessory Devices for Sample Pressure
Ranges on page 2-11.
Although installation of a sampling system is
essentially straightforward, problems resulting
from an improperly designed system can have
a highly adverse effect on analyzer
performance. Therefore, special care in
planning the installation is required to ensure
maximum reliability and accuracy.
In designing a sample system, refer to the
following general rules, which are applicable
to all installations and all analyzer
configurations.
1. Use of stainless steel tubing throughout is
strongly recommended. Its smooth walls
and passive surfaces minimize moisture
adsorption. Other metals, and plastics,
increase system response time and
decrease accuracy. Some plastics are
entirely unsatisfactory, because of
permeability to water vapor.
solution) through tubing until effluent is
essentially colorless.
c. Rinse with water and then with
acetone.
d. Purge with clean, dry, nitrogen or air.
3. Minimize internal surface area of sample
system by using minimum length,
minimum diameter lines. Generally, 1/8
inch o.d. tubing is recommended.
4. Provide high velocity sample flow. Where
pressure reduction is required before
sample enters the instrument, an important
factory is to locate the pressure regulator
as near the process stream as possible.
5. Use minimum number of valves and
fittings, each is a potential source of leaks.
6. Select components for minimum leakage
and moisture absorption. With pressure
regulators: (a) advise manufacturer of
extreme low leakage requirements, (b)
choose units with metallic, not elastomeric,
diaphragms. Use packless valves
wherever possible. Where pipe fittings are
required, seal with Teflon tape, not pipe
thread compound.
7. Avoid dead ended passages, voids, and
blind holes. They permit accumulation of
stagnant gases, resulting in sluggish
system response.
2. Tubing and other components in contact
with sample must be scrupulously clean.
Dirt and oil absorb water. Recommended
cleaning procedure for tubing is as follows:
a. Wash with acetone.
b. Pass cleaning solution (10% nitric acid
and 5% hydrofluoric acid in aqueous
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-9
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