Rosemount Manual: NGA 2000 FRPMD O2 Analyzer Module SW 3.3-Rev A | Rosemount Manuals & Guides

OSEMOUNT ANALYTICAL

R

NGA2000

F

AST

D

R

ESPONSE PARAMAGNETIC

ETECTOR

A

NALYZER

M

ODULE

748413-A

NOTICE

The information contained in this document is subject to change without notice.

This manual is based on the production version of the Fast Response Paramagnetic Detector Analyzer
Module. Hardware and/or software changes may have occurred since this printing.

Rosemount Analytical's NGA 2000 system of Modular Gas Analyzers and Controllers are patented,
under U.S. Patent 5.787.015.

Viton-A® is a registered trademark of E.I. duPont de Nemours & Co.
Paliney No. 7™ is a trademark of J.M. Ney Co.

Manual Part Number 748413-A
August 1999
Printed in U.S.A.

Rosemount Analytical Inc.

4125 East La Palma Avenue
Anaheim, California 92807-1802

REFACE

P

Purpose/Safety Summary.................................................................................1

Glossary ....................................................................................................4

Specifications...................................................................................................6

Specifications – Sample...................................................................................6

Specifications - Physical ...................................................................................7

Customer Service, Technical Assistance and Field Service.............................8

CONTENTS

Returning Parts to the Factory..........................................................................8

Training ....................................................................................................8

Documentation.................................................................................................9

Compliances ....................................................................................................9

ECTION

S

1.1 Overview....................................................................................................1

1.2 Typical Applications...................................................................................1

1.3 Features....................................................................................................1

1.4 Theory of Technology................................................................................2

1. I

NTRODUCTION

748413-A
August 1999

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

i

CONTENTS

ECTION

S

2.1 Unpacking................................................................................................. 5

2.2 Assembly.................................................................................................. 5

2.3 Location ................................................................................................... 6

2.4 Gases ...................................................................................................

2.5 Electrical Connections.............................................................................. 11

ECTION

S

3.1 Overview................................................................................................... 13

3.2 Displays ................................................................................................... 13

2. I

2.4.1 Requirements................................................................................ 7

2.4.2 Connections.................................................................................. 10

2.4.3 Leak Test ..................................................................................... 10

3. S

NSTALLATION

TARTUP AND OPERATION

3.3 Run Mode Display..................................................................................... 13

3.4 Menu Displays.......................................................................................... 15

3.5 Help Displays............................................................................................ 15

3.6 Startup Procedure..................................................................................... 18

3.7 Binding ................................................................................................... 18

3.8 Calibration................................................................................................. 19

3.9 Background Gas Compensation............................................................... 21

Fast Response Paramagnetic Detector Analyzer Module

ii

Rosemount Analytical NGA 2000

748413-A

August 1999

CONTENTS

ECTION

S

4.1 Overview....................................................................................................25

4.2 Printed Circuit Board Replacement...........................................................25

4.3 Flow Sensor Replacement ........................................................................26

4.4 Module Fan Replacement.........................................................................27

4.5 Power Fuse Replacement.........................................................................27

4.6 Thermal Fuse Replacement......................................................................28

ECTION

S

5.1 Replacement Parts....................................................................................31

4. M

5. R

AINTENANCE AND TROUBLESHOOTING

EPLACEMENT PARTS

PPENDIX

A

General Precautions For Handling and Storing High Pressure Gas Cylinders
Warranty
Field Service and Repair Facilities

748413-A
August 1999

A. FR-PMD I

DENTIFICATION MATRIX

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

iii

CONTENTS

IGURES

F

Figure 1-1. Spherical Body in Non-Uniform Magnetic Field.............................. 2

Figure 1-2. Paramagnetic Detector Technology................................................ 3

Figure 1-3. Fast Response Paramagnetic Detector Analyzer Module -

Figure 2-1. Analyzer Module Installation into Instrument Platform.................... 5

Figure 2-2. FR-PMD Front Panel Connections ................................................. 9

Figure 2-3. FR-PMD Back Panel Connections.................................................. 9

Figure 2-4. Interconnection of Typical Gas Manifold to FR-PMD Analyzer

Figure 2-5. FR-PMD Wiring Diagram................................................................ 11

Figure 2-6 Outline and Mounting Dimensions................................................... 12

Figure 3-1. Run Mode Display.......................................................................... 15

Figure 3-2. Main Menu Display......................................................................... 16

Figure 3-3. Basic Controls Menu....................................................................... 16

Figure 3-4. Expert Controls and Setup Menu.................................................... 16

Figure 3-5. Technical Level Configuration Menu .............................................. 17

Figure 3-6. Typical Help Screen........................................................................ 17

Figure 4-1. FR-PMD Module - Exploded View.................................................. 26

Figure 4-2. Module Fan Assembly.................................................................... 27

Figure 4-3. Power Fuse Location...................................................................... 27

Figure 4-4. Detector Assembly.......................................................................... 28

Figure 4-5. Detector - Exploded View ............................................................... 29

Top View....................................................................................... 4

Module.......................................................................................... 10

ABLES

T

Table 3-1. FR-PMD Analyzer Module Alarms................................................... 14

Table 3-2. Calibration Range for Various Zero Based Operating Ranges........ 20

Table 3-3. Oxygen Equivalents of Common Gases.......................................... 24

Fast Response Paramagnetic Detector Analyzer Module

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Rosemount Analytical NGA 2000

748413-A

August 1999

PREFACE

PURPOSE/SAFETY SUMMARY

The purpose of this manual is to provide the procedures for the installation, operation and
maintenance of this NGA 2000 module.

Some sections may describe equipment not used in your NGA 2000 system configuration.
The user should become thoroughly familiar with the operation of this module before
operating it. Read this instruction manual completely.

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.

If this equipment is used in a manner not specified in these instructions,
protective systems may be impaired.

DANGER is used to indicate the presence of a hazard which will cause severe personal
injury, death, or substantial property damage if the warning is ignored

WARNING is used to indicate the presence of a hazard which can cause severe personal
injury, death, or substantial property damage if the warning is ignored.

CAUTION is used to indicate the presence of a hazard which will or can cause minor
personal injury or property damage if the warning is ignored.

NOTE is used to indicate installation, operation, or maintenance information which is
important but not hazard-related.

WARNING: ELECTRICAL SHOCK HAZARD

Do not operate without 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.

748413-A
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Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

P1

PREFACE

WARNING: POSSIBLE EXPLOSION HAZARD

This equipment is not designed for and should not be used in the analysis of
flammable samples. Use of this equipment in this way could result in explosion
and death.

WARNING: POSSIBLE EXPLOSION HAZARD

Verify that all gas connections are made as labeled and are leak free. Improper
gas connections could result in explosion or death.

NOTE

Apply leak test liquid to cell or detectors only as a last resort.

WARNING: PARTS INTEGRITY

Tampering or unauthorized substitution of components may adversely affect
safety of this product. Use only factory documented components for repair

WARNING: OVER-VOLTAGE SPIKING

If this Analyzer Module is used with a non-Rosemount Analytical power supply,
adding Rosemount Analytical PN 90331 Current Protector in series with the 24 V
positive line will prevent over-voltage spiking and resultant fuse blowing when
powering up the instrument.

CAUTION: PRESSURIZED GAS

This module requires periodic calibration with a known standard gas. See
General Precautions for Handling and Storing High Pressure Gas Cylinders in
the rear of this manual.

Fast Response Paramagnetic Detector Analyzer Module

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Rosemount Analytical NGA 2000

748413-A

August 1999

PREFACE

CAUTION: HAND INJURY HAZARD

Do not place hands or fingers in Platform front handles when the front panel is
open. Dropping front panel while hand or fingers are inside either handle can
cause serious injury.

CAUTION: OVERBALANCE HAZARD

This Analyzer Module may tip instrument over if it is pulled out too far and the
Platform is not properly supported.

748413-A
August 1999

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

P3

PREFACE

GLOSSARY

Analyzer Module

Self contained analysis modules that are designed to be installed into the NGA 2000
System. One Analyzer Module can be installed into a Single Enclosure containing the
Platform Module. Two Analyzer Modules can be installed into a Dual Enclosure. The
simplest NGA 2000 System consists of one Analyzer Module.

Backplane

The interconnect circuit board which the Controller Board, Power Supply Board, I/O
Board(s) and Expansion Board(s) are plugged into the Backplane

Control module

The operator interface plus the Controller Board.

Controller Board

The Controller Board in the Platform which runs the software program that operates the
Display, Keypad and Network Manager. The Controller Board plugs into the Backplane.

Distribution Assembly

The Distribution Assembly consists of the Backplane and the card cages in the Platform
Module that contain I/O Module(s) and Expansion Module(s).

Expansion Board

The Expansion Board performs special features not related to I/O functions. The Expansion
Board plugs into the Backplane from the Platform front.

I/O Module

An auxiliary module that provides some sort of interface to the outside world. I/O modules
may include analog outputs, relay contacts, and digital interfaces. In general, they are
mounted in platforms as options.

Operator Interface

The Display and Keyboard of the Platform.

Fast Response Paramagnetic Detector Analyzer Module

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Rosemount Analytical NGA 2000

748413-A

August 1999

PREFACE

Platform

Any combination of the NGA case, the display and computer board, power supply, and I/O
modules. In general, it could be considered to be anything in the NGA system other than
the analyzer modules.

Power Supply

Any of a variety of components that provide conditioned power to other NGA 2000
components, from the Power Supply Board that plugs into the Backplane in a stand-alone
instrument to several larger ones that can power larger collections of modules and
components.

Primary Variable

The measured species concentration value from an Analyzer Module.

Secondary Variable

The current status data placed on the network by an Analyzer Module. This includes
sample flow, source voltage and other diagnostic information.

Softkeys

The five function keys located below the front panel display. The menu function for each
softkey is displayed directly above it and is controlled by the software.

System

A NGA 2000 System consisting of one (or more) Analyzer Modules, an optional Platform,
one or more optional I/O Boards, an optional Expansion Board and an optional
Supplemental Power Supply.

748413-A
August 1999

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

P5

PREFACE

SPECIFICATIONS

MEASUREMENT SPECIES:
R

ANGES

:

REPEATABILITY:
M

INIMUM DETECTABLE LEVEL

NOISE:
L

INEARITY

R

ESPONSE TIME

D

RIFT (ZERO AND SPAN

E

FFECT OF TEMPERATURE

E

NVIRONMENT

A

MBIENT TEMPERATURE

E

FFECT OF FLOW

P

OWER REQUIREMENTS

:

:

):

:

:

:

Oxygen
0 to 100% oxygen; four fullscale selections (for

suppressed ranges, consult factory)

±1% of fullscale (at constant temperature)

0.01% oxygen

:

<1% of fullscale, peak-to-peak
±1% of fullscale
0 to 90% of fullscale in 2 seconds or less

<±2% of fullscale/week of fullscale/week at constant
temperature;

<±1% of fullscale/24 hours of fullscale at constant
temperature

:

:

<±1% of fullscale over any 10°C interval for rate of change no
greater than 10°C per hour

Location - Class B controlled, indoor, non-hazardous
0 to 45°C (32 to 113°F)

<1% of range when sample flow rate is changed by 100
ml/min.

24 VDC ±5%, 50 W max.; ripple and noise: <100 mV
peak-to-peak; line and load regulations: <±1%

SPECIFICATIONS – SAMPLE

T

EMPERATURE

F

LOW RATE

E

XHAUST PRESSURE

P

ARTICLES

D

EWPOINT

M

ATERIALS IN CONTACT WITH

S

AMPLE

Fast Response Paramagnetic Detector Analyzer Module

P6

Rosemount Analytical NGA 2000

:

:

:

:

:

10 to 66°C (50 to 150°F)
800 to 1400 ml/min.

:

-345 to 690 hPa-gauge (-5 to 10 psig)
filtered to <2 microns
below 43°C (110°F), no entrained liquid

Glass, 316 stainless steel, epoxy resin, Viton A,
platinum, polypropylene

748413-A

August 1999

SPECIFICATIONS - PHYSICAL

PREFACE

C

ASE CLASSIFICATION

D

IMENSIONS

W

EIGHT

:

:

MOUNTING:

M

AXIMUM LENGTH OF

C

ABLE

:

:

LON

General purpose for installation in weather-protected
areas

See Outline and Mounting Dimensions, Figure 2-4
9 kg (19.8 lbs.)
Inside a Platform or custom-installed in a panel

1600 m (1 mile) between Analyzer Module and Platform

See the Preface section of the Platform Components manual for specifications
regarding Platform-related components (e.g., case dimensions) and the Preface of
the I/O Module manual for specifications regarding I/O (e.g., relay outputs).

748413-A
August 1999

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Rosemount Analytical NGA 2000

P7

PREFACE

CUSTOMER SERVICE, TECHNICAL ASSISTANCE AND FIELD 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

RETURNING PARTS TO THE FACTORY

Before returning parts, contact the Customer Service Center and request a Returned
Materials Authorization (RMA) number. Please have the following information when you
call: Model Number, Serial Number, and Purchase Order Number or Sales Order Number.

Prior authorization by the factory must be obtained before returned materials will be
accepted. Unauthorized returns will be returned to the sender, freight collect.

When returning any product or component that has been exposed to a toxic, corrosive or
other hazardous material or used in such a hazardous environment, the user must attach
an appropriate Material Safety Data Sheet (M.S.D.S.) or a written certification that the
material has been decontaminated, disinfected and/or detoxified.

Return to:

Rosemount Analytical Inc.

4125 East La Palma Avenue

Anaheim, California 92807-1802

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.

Phone: [phone]

FAX: [phone]

Fast Response Paramagnetic Detector Analyzer Module

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Rosemount Analytical NGA 2000

748413-A

August 1999

PREFACE

9

6

DOCUMENTATION

The following Fast Response Paramagnetic Detector Analyzer Module instruction materials
are available. Contact Customer Service or the local representative to order.

748413 Instruction Manual (this document)

COMPLIANCES

This product may carry approvals from several certifying agencies, including Factory Mutual
and the Canadian Standards Association (which is also an OSHA accredited, Nationally
Recognized Testing Laboratory), for use in non-hazardous, indoor locations

®

NRTL /C

Rosemount Analytical Inc. has satisfied all obligations from the European Legislation to
harmonize the product requirements in Europe.

This product complies with the standard level of NAMUR EMC. Recommendation (May

1993).

NAMUR

This product satisfies all obligations of all relevant standards of the EMC framework in
Australia and New Zealand.

97-C219

748413-A
August 1999

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Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

P9

PREFACE

NOTES

P10

Fast Response Paramagnetic Detector Analyzer Module
Rosemount Analytical NGA 2000

748413-A

August 1999

INTRODUCTION

1.1 OVERVIEW

This manual describes the Fast Response Paramagnetic Detector (FR-PMD) Analyzer
Module of Rosemount Analytical's NGA 200 Series of gas analysis components.

The FR-PMD Analyzer Module is designed to continuously determine the concentration of
oxygen in a flowing gaseous mixture. The concentration is expressed in ppm or percent
volume oxygen.

The Analyzer Module is designed as a slide-in module (if configured in stand-alone
instrument fashion), removable from the front of the Platform, with gas connections made
from the rear. All electronics relative to sample detection and conditioning are included in
this module.

1

1.2 TYPICAL APPLICATIONS

FR-PMD Analyzer Module applications include:

• engine exhaust (ICEE) analysis

• certain chemical production processes

1.3 FEATURES

Among the features incorporated into the FR-PMD Analyzer Module are:

• Improved shock and vibration resistance

• Insensitivity to sample flow variation

• Improved sample transport time

748413-A
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Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

1

INTRODUCTION

1

1.4 THEORY OF TECHNOLOGY

Oxygen is strongly paramagnetic (i.e., capable of becoming a temporary magnet when
placed in a magnetic field) while most other common gases are weakly diamagnetic (i.e.,
tend to be non-magnetic). See Figure 1-1.

The magnetic susceptibility of the flowing gas sample is sensed in the detector/magnet
assembly. As shown in Figure 1-2, a dumbbell shaped, nitrogen-filled, hollow gas test body
is suspended on a platinum/nickel alloy ribbon in a non-uniform magnetic field.

Because of a "magnetic buoyancy" effect, the spheres of the test body are subjected to
displacement forces, resulting in a displacement torque proportional to the magnetic
susceptibility of the gas surrounding the test body.

Measurement is accomplished by a null-balance system, whereby the displacement torque
is opposed by an equal and opposite restorative torque. The restoring current is
automatically maintained at the correct level by an electro-optical feedback system. A
beam of light from the source LED is reflected off the square mirror attached to the test
body onto a bi-cell (dual photodiode).

The current required to keep the test body to the null position is a linear function of the total
magnetic susceptibility of the sample gas.

Shaded
Pole
Piece

Sphere
(Magnetic Susceptibility = k

F

k

Sample Gas
(Magnetic Susceptibility = k )

As percentage of oxygen in sample gas increases,
displacement force (F

Note:

) increases.

k

)

o

IGURE

F

Fast Response Paramagnetic Detector Analyzer Module

2

Rosemount Analytical NGA 2000

1-1. S

PHERICAL BODY IN NON-UNIFORM MAGNETIC FIELD

748413-A

August 1999

Displacement

Torque

INTRODUCTION

1

Balancing
Weight

Electromagnetic
Axis

Platinum/Nickel Alloy
Suspension Ribbon

TEST BODY DETAIL

Displacement

Torque

Restoring
Torque

Restoring

Current

Mirror

Restoring
Current

Restoring
Torque

Current Loop

Electromagnetic
Axis

Balancing Weight

Nitrogen-Filled Hollow Glass
Test Body

IGURE

F

Magnet

Shaded Pole Pieces (4)

Dual Photocell

1-2. P

ARAMAGNETIC DETECTOR TECHNOLOGY

Test Body

Restoring

Current

LED Source

DETECTOR/MAGNET

ASSEMBLY

Zero

NULL BALANCE SYSTEM

SIGNAL CONDITIONI NG

ASSEMBLY

Span

SIGNAL OUTPUT
TO NETWORK

748413-A
August 1999

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

3

INTRODUCTION

1

PRESSURE
COMPENSATION
BOARD

NETWORK INPUT

MODULE BOARD

COMPUTER
ANALYSIS BOARD

DETECTOR
HOUSING

CASE
TEMPERATURE
SENSOR

FLOW SENSOR

IGURE

F

1-3. F

AST RESPONSE PARAMAGNETIC DETECTOR ANALYZER MODULE

IEW

V

- T

OP

Fast Response Paramagnetic Detector Analyzer Module

4

Rosemount Analytical NGA 2000

748413-A

August 1999

INSTALLATION

2.1 UNPACKING

If the Fast Response Paramagnetic Analyzer Module is received as a separate unit,
carefully examine the shipping carton and contents for signs of damage. Immediately notify
the shipping carrier if the carton or contents is damaged. Retain the carton and packing
material until all components associated with the Analyzer Module are operational.

2.2 ASSEMBLY

If the Analyzer Module requires assembly with other components (e.g., the Platform and
associated I/O Modules), do so at this time. Following the guides on the bottom left and
bottom center of the Platform, carefully slide the Analyzer Module halfway into place.

2

CAUTION: HAND INJURY HAZARD

Do not place hands or fingers in the Platform front handles when front panel is
open. Dropping the front panel of the Platform while hand or fingers are inside
either handle can cause serious injury.

ANALYZER MODULE GUIDES

PIN SEATS

DISENGAGED FRONT PANEL

IGURE

F

748413-A
August 1999

2-1. A

NALYZER MODULE INSTALLATION INTO INSTRUMENT PLATFORM

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

5

2

INSTALLATION

Lift the spring-loaded pins on the front of the Analyzer Module, and carefully slide it the rest
of the distance. Secure the module in position by releasing the pins, which seat in the
available holes in the bottom of the case (see Figure 2-1). If the module and Platform are
difficult to assemble, remove the module, ensure the top cover of the module is firmly
seated on the hold-down screws, and repeat the assembly procedure.

Install I/O Module(s) according to guidelines in the I/O manual. After startup and calibration
have been performed, secure the front panel with the six screws provided.

2.3 LOCATION

Install the Analyzer Module in a clean, non-hazardous, weather protected, vibration free
location free from extreme temperature variations. For best results, either install the module
near the sample stream to minimize sample transport time or supply a flow greater than
necessary and route only the appropriate amount through the Analyzer Module.

Observing these requirements are critical. Note the following:
Excessive vibration can cause a noisy readout. To minimize vibration effects, the

detector/magnet assembly is enveloped in a shock-mounted compartment.
The user should ensure, when making any internal electrical connections, that no cables

are placed in contact with the detector assembly or associated internal sample inlet and
outlet tubing.

Magnetic susceptibilities and partial pressures of gases vary with temperature. Permissible
ambient temperature range is 32°F to 113°F (0°C to 45°C).

The interior of the Detector Assembly is maintained at approximately 144°F (62°C) by an
electronically controlled heater. Prior to entering the detector assembly, the sample is
heated in a coiled tubing to match the detector's temperature.

Fast Response Paramagnetic Detector Analyzer Module

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Rosemount Analytical NGA 2000

748413-A

August 1999

2.4 GASES

INSTALLATION

2

2.4.1 R

Calibration Gases

Analyzer Module calibration requires the establishment of zero and span calibration points.
This requires a zero standard gas to set the zero point span gas to establish a calibration
point at or near the upper range limit.

An oxygen-free gas, typically nitrogen, is required for use as the zero standard gas.
Recommendations for span calibration gases, bases on various operating ranges, are
tabulated in Table 3-2. Air (20.93% oxygen) can be used as span gas regardless of the
ranges used for sampling, although very low ranges may lose accuracy.

Sample Gas

Sample gas should be non-flammable.

Temperature

Sample temperature at the inlet should be from 50°F to 150°F (10°C to 66°C). A maximum
entry temperature of 110°F (43°C) is recommended to prevent cooling of the sample and
possible internal condensation. Such condensation could damage some components of the
Analyzer Module. This recommendation can be ignored if a thoroughly dry sample is
examined.

EQUIREMENTS

Pressure

Sample exhaust pressure limits are -5 to 10 psig (-345 to 690 hPa-gauge). Normal
operation is in the positive range, between 0 and 10 psig (0 and 690 hPa-gauge). Negative
gauge pressures are not normally recommended, but may be used in certain special
applications.

To prevent over-pressurization, insert a pressure relief valve into the sample inlet line. A
check valve should also be placed in the outlet line if the Analyzer Module is connected to a
manifold associated with a flare or other apparatus that does not operate at atmospheric
pressure.

The outlet port is commonly vented to the atmosphere. Any change in barometric pressure
has a directly proportional effect on the indicated percent of oxygen, and should be
neutralized through manual or computer correction of data. Note the following example:

Range = 0% to 5% oxygen

748413-A
August 1999

Fast Response Paramagnetic Detector Analyzer Module

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7

2

INSTALLATION

Barometric pressure change after calibration = 1%
Analyzer Module measurement = 5% oxygen
Measurement error = 0.01 x 5% oxygen
Fullscale span = 5% oxygen

0.05% oxygen error = 1% of fullscale
The error is more significant for suppressed range 99% to 100%.
An optional barometric pressure compensation board is available to automatically perform

this correction.
A general rule regarding calibration gas pressure is that it should be the same as the

expected sample gas pressure during routine operation.
The above requirement increases the difficulty of operation at negative gauge pressure. A

suction pump can be connected to the outlet port for drawing sample through the Analyzer
Module. Such operation necessitates special precautions to ensure accurate readout,
including the following:

The need for equilibrium between sample and gas calibration pressures.
Any leakage in the sample handling system will decrease readout accuracy.

Flow Rate

Recommended sample flow rate is 800 to 1400 ml/min., ±40 ml/min. Optimum flow rate is
1100 ml/min.

If flow is held to within tolerance and operating pressure remains constant, zero and span
drift will meet specified limits.

Fast Response Paramagnetic Detector Analyzer Module

8

Rosemount Analytical NGA 2000

748413-A

August 1999

INSTALLATION

NETWORK 1

NETWORK 2

POWER

FUSE

2

IGURE

F

IGURE

F

2-2. FR-PMD F

2-3. FR-PMD B

RONT PANEL CONNECTIONS

OUT

ACK PANEL CONNECTIONS

SAMPLE

IN

10 PSI MAX

(69 kPa MAX)

748413-A
August 1999

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

9

2

INSTALLATION

2.4.2 C

ONNECTIONS

(See Figure 2-3) Connect inlet and outlet lines for sample gas to appropriately labeled
fittings on the rear panel. Both connections are 1/4 inch ferrule-type compression fittings.

Zero and span gases use the same inlet and outlet as the sample. Figure 2-4 shows a
typical external sample handling manifold for gas selection. Particulates must be filtered
down to two microns, gases generally require pressurization, and flow measurement
metering MUST be present.

2.4.3 L

EAK TEST

The Analyzer Module is thoroughly tested at the factory for gas leakage. The user is
responsible for testing for leakage only at the inlet and outlet fittings on the rear panel. The
user is also responsible for internal leak testing periodically and if any internal pneumatic
components are adjusted or replaced (with a test procedure selected by the user).

Analyzer Module

Needle
Valves

IGURE

F

Sample In

Zero
Standard
Gas

Span
Standard
Gas

2-4. I

Flow Splitter

Two Micron

Filter

Flowmeter

NTERCONNECTION OF TYPICAL GAS MANIFOLD TO

ODULE

M

(≈2:1)

To Vent

FR-PMD A

NALYZER

10

Fast Response Paramagnetic Detector Analyzer Module
Rosemount Analytical NGA 2000

748413-A

August 1999

INSTALLATION

2.5 ELECTRICAL CONNECTIONS

NOTE

Electrical connections must be in compliance with National Electrical Code
(ANSI/NFPA 70) and/or any applicable national or electrical codes.

Two electrical connections are required on the Analyzer Module; POWER and NETW ORK.
See Figure 2-2. On the Analyzer Module, two NETWORK connections are available, either
of which is appropriate for : 1) interconnection with Backplane of the Platform (see Platform
instruction manual) or 2) "daisy chaining" with other NGA 2000 components.

Connect Analyzer Module POWER 24 VDC power source, either the Platform or external
power source.

2

IGURE

F

J5

J10

J14

J6 J4

J7

W1J19

FAN

CASE TEMP. SENSOR

FLOW SENSOR

2-5. FR-PMD W

COMPUTER BOARD

IRING DIAGRAM

J16

J1

J9

J2

J3

MODULE BOARD

J20 J21 J22

SENSOR

PREAMP

BOARD

MAGNET HEATER

THERM AL CUTOFF

DETECTOR

J12

J15

LED

SOURCE

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August 1999

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

11

2

INSTALLATION

[213]

[208]

[109]

[28]

20.0
[508]

[157]

[152]

17.41
[442]

[15]

2.8

[71]

.5

[12]

C

D

E

1.3

[36]

.6

[15]

8.4

[213]

E. FUSE.
D. POWER CABLE TO NETWORK.
C. NETWORK CABLE CONNECTIONS TO PLATFORM.
B. SAMPLE OUT: 1/4" O.D. TUBE FITTING.
A. SAMPLE IN: 1/4" O.D. TUBE FITTING.

5. MODULE TO BE IN STALLED WITHIN ±15° OF HORIZONTAL..

4. POWER REQUIREMENTS: 24 VDC 3.5 A.

3. ELECTRICAL INSTALLATION MUST BE IN CO MPLIANCE WITH NATIONAL ELECTRICAL
CODE (ANSI/NFPA 70) AND/O R ANY APPLICABLE NATIONAL OR LOCAL CODES.

2. MODULE IS NOT WEATHERPROOF.

1. APPROXIMATE WEIGHT: 15 LB (6.8 Kg).

IGURE

F

2-6 O

UTLINE AND MOUNTING DIMENSIONS

6.7

[170]

OUT

SAMPLE

IN

10 PSI MAX

(69 kPa MAX)

B

1.0

[25]

1.6

[41]

A

DIMENSIONS

INCH

[mm]

12

Fast Response Paramagnetic Detector Analyzer Module
Rosemount Analytical NGA 2000

748413-A

August 1999

STARTUP AND OPERATION

3.1 OVERVIEW

Prior to initial startup, the user should perform the leak test procedure outlined in Section 2.
For the remainder of this section, Analyzer Module interconnection with a Platform or some

interfacing component will be assumed. Display and keypad information shall refer to that
which the user can expect to see and do with regard to the front panel of the Platform.

For a complete description of the Platform front panel controls and indicators, see the
Platform instruction manual.

3

3.2 DISPLAYS

Three kinds of Display screens are available to the user:

• Run Mode

• Menu

• Help

3.3 RUN MODE DISPLAY

The Run Mode is the normal mode of operation. In this mode, the Display (see Figure 3-1)
will show current gas measurement, the component of interest, the current operations of the
softkeys, and a graphic bar representing the displayed concentration as ppm or as a
percent of oxygen.

If more than one Analyzer Module is connected to the system, the Run Mode display will
show as many as four gas measurements on screen. Alarm messages may also appear on
the display (See Table 3-1).

748413-A
August 1999

Fast Response Paramagnetic Detector Analyzer Module

Rosemount Analytical NGA 2000

13