3-2 Calibration Range for Various Zero Based Operating Ranges.................3-7
3-3 Oxygen Equivalents of Common Gases...................................................3-10
748362-B Rosemount Analytical December 1998
NGA 2000 Fast Response Paramagnetic Detector
iii
C
ONTENTS
NOTES
iv
December 1998 Rosemount Analytical 748362-BNGA 2000 Fast Response Paramagnetic Detector
P
REFACE
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.
748362-B Rosemount Analytical December 1998
NGA 2000 Fast Response Paramagnetic Detector
P-1
REFACE
P
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.
P-2
December 1998 Rosemount Analytical 748362-BNGA 2000 Fast Response Paramagnetic Detector
REFACE
P
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: OVE R -B ALANCE HA ZA RD
This Analyzer Module may tip instrument over if it is pulled out too far and the
Platform is not properly supported.
748362-B Rosemount Analytical December 1998
NGA 2000 Fast Response Paramagnetic Detector
P-3
REFACE
P
NOTES
P-4
December 1998 Rosemount Analytical 748362-BNGA 2000 Fast Response Paramagnetic Detector
GLOSSARY
NALYZER MODULE
A
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.
ACKPLANE
B
The interconnect circuit board which the Controller Board, Power Supply Board, I/O
Board(s) and Expansion Board(s) are plugged into the Backplane
ONTROL MODULE
C
The operator interface plus the Controller Board.
ONTROLLER BOARD
C
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.
REFACE
P
ISTRIBUTION ASSEMBLY
D
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).
XPANSION BOARD
E
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 M
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.
O
The Display and Keyboard of the Platform.
P
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.
ODULE
PERATOR INTERFACE
LATFORM
748362-B Rosemount Analytical December 1998
NGA 2000 Fast Response Paramagnetic Detector
P-5
REFACE
P
OWER SUPPLY
P
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 standalone instrument to several larger ones that can power larger collections of modules
and components.
RIMARY VARIABLE
P
The measured species concentration value from an Analyzer Module.
ECONDARY VARIABLE
S
The current status data placed on the network by an Analyzer Module. This includes
sample flow, source voltage and other diagnostic information.
OFTKEYS
S
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.
YSTEM
S
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.
P-6
December 1998 Rosemount Analytical 748362-BNGA 2000 Fast Response Paramagnetic Detector
SPECIFICATIONS
MEASUREMENT SPECIES
Oxygen
R
ANGES
0 to 100% oxygen; four fullscale selections (for suppressed ranges, consult
factory)
R
EPEATABILITY
±1% of fullscale (at constant temperature)
MINIMUM DETECTABLE LEVEL
0.01% oxygen
N
OISE
<1% of fullscale, peak-to-peak
L
INEARITY
±1% of fullscale
REFACE
P
R
ESPONSE TIME
0 to 90% of fullscale in 2 seconds or less
D
RIFT (ZERO AND SPAN
<±2% of fullscale/week of fullscale/week at constant temperature;
<±1% of fullscale/24 hours of fullscale at constant temperature
E
FFECT OF TEMPERATURE
<±1% of fullscale over any 10°C interval for rate of change no greater than
10°C per hour
E
NVIRONMENT
Location - Class B controlled, indoor, non-hazardous
A
MBIENT TEMPERATURE
0 to 45°C (32 to 113°F)
E
FFECT OF FLOW
<1% of range when sample flow rate is changed by 100 ml/min.
P
OWER REQUIREMENTS
24 VDC ±5%, 55 W max.;
ripple and noise: <100 mV peak-to-peak;
line and load regulations: <±1%
)
748362-B Rosemount Analytical December 1998
NGA 2000 Fast Response Paramagnetic Detector
P-7
REFACE
P
S
PECIFICATIONS
T
EMPERATURE
- S
AMPLE
10 to 66°C (50 to 150°F)
FLOW RATE
800 to 1400 ml/min.
EXHAUST PRESSURE
-345 to 690 hPa-gauge (-5 to 10 psig)
P
ARTICLES
filtered to <2 microns
D
EWPOINT
below 43°C (110°F), no entrained liquid
M
ATERIALS IN CONTACT WITH SAMPLE
Glass, 316 stainless steel, epoxy resin, Viton A, platinum, polypropylene
SPECIFICATIONS - PHYSICAL
C
ASE CLASSIFICATION
General purpose for installation in weather-protected areas
:
D
IMENSIONS
See Outline and Mounting Dimensions, Figure 2-4
W
EIGHT
9 kg (19.8 lbs.)
M
OUNTING
Inside a Platform or custom-installed in a panel
M
AXIMUM SEPARATION
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).
P-8
December 1998 Rosemount Analytical 748362-BNGA 2000 Fast Response Paramagnetic Detector
REFACE
P
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: 1-714-986-7600
FAX: 1-714-577-8006
D
OCUMENTATION
The following NGA 2000 Fast Response Paramagnetic Detector instruction materials
are available. Contact Customer Service or the local representative to order.
748362 Instruction Manual (this document)
748362-B Rosemount Analytical December 1998
NGA 2000 Fast Response Paramagnetic Detector
P-9
REFACE
9
6
P
COMPLIANCES
This product may carry approvals from several certifying agencies, including the
Canadian Standards Association (which is also an OSHA accredited, Nationally
Recognized Testing Laboratory), for use in non-hazardous, indoor locations. If so, the
product will carry approval insignia such as those shown here on the product name
rating plate.
®
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).
This product satisfies all obligations of all relevant standards of the EMC framework in
Australia and New Zealand.
97-C219
NAMUR
N
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December 1998 Rosemount Analytical 748362-BNGA 2000 Fast Response Paramagnetic Detector
I
NTRODUCTION
1
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.
1.2 TYPICAL APPLICATIONS
FR-PMD Analyzer Module applications include:
• engine exhaust (ICEE) analysis
• certain chemical production processes
1.3 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/magn et
assembly. As shown in Figure 1-2, a dumbbell shaped , nitrogen-filled, hollo w 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.
748362-B Rosemount Analytical December 1998
NGA 2000 Fast Response Paramagnetic Detector
1-1
NTRODUCTION
I
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.
See Figure 1-3 for component
configuration.
F
IGURE
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
1-1. S
PHERICAL BODY IN NON
U
NIFORM MAGNETIC FIELD
Note:
) increases.
k
)
o
-
1.4 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
1-2
December 1998 Rosemount Analytical 748362-BNGA 2000 Fast Response Paramagnetic Detector
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