Emerson Microcem Instruction Manual 748467 A

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Instruction Manual
748467-A
January 2002
http://www.processanalytic.com
Model MicroCEM
Continuous Emissions Monitor
Emerson Process Management
Rosemount Analytical Inc.
Process Analytic Division
1201 North Main Street
Orrville, Ohio 44667-09012
T (330) 682-9010
F (330) 684-4434
e-mail: gas.csc@EmersonProcess.com
http://www.processanalytic.com
ESSENTIAL INSTRUCTIONS
READ THIS PAGE BEFORE PROCEEDING!
Rosemount Analytical designs, manufactures and tests its products to meet many national and
international standards. Because these instruments are sophisticated technical products, you
MUST properly install, use, and maintain them to ensure they continue to operate within their
normal specifications. The following instructions MUST be adhered to and integrated into your
safety program when installing, using, and maintaining Rosemount Analytical products. Failure to
follow the proper instructions may cause any one of the following situations to occur: Loss of life;
personal injury; property damage; damage to this instrument; and warranty invalidation.
•
Read all instructions prior to installing, operating, and servicing the product.
•
If you do not understand any of the instructions, contact your Rosemount Analytical repre-
sentative for clarification.
•
Follow all warnings, cautions, and instructions marked on and supplied with the product.
•
Inform and educate your personnel in the proper installation, operation, and 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 electri-
cal 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 speci-
fied 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.
Logos, trademarks and copyrights are property of their respective owners.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents i
Model MicroCEM
TABLE OF CONTENTS
PREFACE...........................................................................................................................................P-1
Definitions ...........................................................................................................................................P-1
Intended Use Statement.....................................................................................................................P-2
Safety Summary .................................................................................................................................P-2
General Precautions For Handling And Storing High Pressure Gas Cylinders .................................P-5
Documentation....................................................................................................................................P-6
Compliances .......................................................................................................................................P-6
1-0 DESCRIPTION AND SPECIFICATIONS..............................................................................1-1
1-1 Overview................................................................................................................................1-1
1-2 Typical Applications...............................................................................................................1-1
1-3 Theory Of Operation..............................................................................................................1-1
a. Chemiluminescense NOX................................................................................................1-1
b. Non-Dispersive Infrared (NDIR) CO ...............................................................................1-1
c. Paramagnetic O2.............................................................................................................1-2
1-4 Detector Methodologies.........................................................................................................1-2
a. Non-Dispersive Infrared (NDIR)......................................................................................1-2
b. Paramagnetic Oxygen Method .......................................................................................1-6
c. Electrochemical Oxygen Method ....................................................................................1-7
1-5 Central Processing Unit.........................................................................................................1-9
a. Embedded Enhanced Bios .............................................................................................1-9
b. Specifications ..................................................................................................................1-9
1-6 Analog/Digital I/O Board ........................................................................................................1-10
a. Automatic Calibration......................................................................................................1-10
b. Analog Inputs ..................................................................................................................1-10
c. Programmable Input Ranges ..........................................................................................1-11
d. Enhanced Trigger and Sampling Control Signals...........................................................1-11
e. Analog Outputs ...............................................................................................................1-11
f. FIFO and 16-Bit Bus Interface ........................................................................................1-11
g. Specifications ..................................................................................................................1-13
1-7 PCMCIA Adapter ...................................................................................................................1-14
a. Features ..........................................................................................................................1-14
b. Software ..........................................................................................................................1-14
1-8 Modem...................................................................................................................................1-15
a. Features ..........................................................................................................................1-15
1-9 Flash Drive.............................................................................................................................1-16
a. Specifications ..................................................................................................................1-16
1-10 Pocket PC..............................................................................................................................1-18
a. Specifications ..................................................................................................................1-18
1-11 Wireless LAN Adapter ...........................................................................................................1-19
a. Specifications ..................................................................................................................1-19
1-12 500 Watts Power Supply .......................................................................................................1-20
a. Features ..........................................................................................................................1-20
1-13 MicroCEM Specifications.......................................................................................................1-21
a. Analyzer ..........................................................................................................................1-21
b. Probe/Sample Handling ..................................................................................................1-22
Instruction Manual
748467-A
January 2002
ii Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
2-0 INSTALLATION ....................................................................................................................2-1
2-1 Overview................................................................................................................................2-1
a. Limitations .......................................................................................................................2-1
b. Mounting Options ............................................................................................................2-1
2-2 Location .................................................................................................................................2-1
2-3 Gases ....................................................................................................................................2-3
a. Connection ......................................................................................................................2-3
b. Conditioning ....................................................................................................................2-3
2-4 Electrical Connections ...........................................................................................................2-6
a. AC Power ........................................................................................................................2-8
b. Circular Connector Assembly Instructions......................................................................2-8
c. Interface Connections .....................................................................................................2-11
2-5 Analytical Leak Check ...........................................................................................................2-14
a. Flow Indicator Method.....................................................................................................2-14
b. Manometer Method.........................................................................................................2-15
3-0 OPERATION .........................................................................................................................3-1
3-1 Startup Procedure .................................................................................................................3-1
3-2 Pocket PC User Interface ......................................................................................................3-1
a. Connecting Pocket PC to MicroCEM ..............................................................................3-1
b. Main Display....................................................................................................................3-3
c. MicroCEM Menu .............................................................................................................3-4
d. MicroCEM Alarms ...........................................................................................................3-4
e. MicroCEM Login..............................................................................................................3-6
f. MicroCEM Login-Current User Indication .......................................................................3-6
3-3 MicroCEM Settings................................................................................................................3-7
a. Range..............................................................................................................................3-7
b. Auto Calibration...............................................................................................................3-8
c. Auto Calibration Time and Frequency ............................................................................3-8
d. Manual Calibration ..........................................................................................................3-9
e. Limits...............................................................................................................................3-10
f. Calibration Gas ...............................................................................................................3-10
g. Maintenance Mode .........................................................................................................3-11
3-4 MicroCEM Factory Settings...................................................................................................3-12
a. PID Control Loop Factory Settings .................................................................................3-15
3-5 MicroCEM Administration ......................................................................................................3-17
a. User Settings...................................................................................................................3-17
b. Auto Logoff......................................................................................................................3-17
3-6 MicroCEM Data Logs ............................................................................................................3-18
a. Maximum Log File Size...................................................................................................3-18
b. Maximum Number of Log Files .......................................................................................3-18
c. Log File Name Format ....................................................................................................3-18
d. Measurement Log File Format........................................................................................3-18
e. Calibration Log File Format.............................................................................................3-19
f. Alarm Log File Format ....................................................................................................3-20
3-7 View Data Logs .....................................................................................................................3-21
3-8 Viewing MicroCEM Data with a Web Browser ......................................................................3-23
a. Real-Time Page ..............................................................................................................3-23
b. Emissions Page ..............................................................................................................3-24
c. Download Page...............................................................................................................3-26
3-9 Viewing MicroCEM Data with MS Excel................................................................................3-27
3-10 Auto Calibration .....................................................................................................................3-28
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Model MicroCEM
4-0 SOFTWARE ..........................................................................................................................4-1
4-1 Overview................................................................................................................................4-1
4-2 MicroCEM User Interface Software .......................................................................................4-1
4-3 MicroCEM Web Server Software ..........................................................................................4-1
4-4 Software Development Management ....................................................................................4-2
5-0 MAINTENANCE AND SERVICE ..........................................................................................5-1
5-1 Overview................................................................................................................................5-1
5-2 Converter ...............................................................................................................................5-3
5-3 Ozone Generator...................................................................................................................5-4
5-4 Personality Modules ..............................................................................................................5-4
5-5 Chemiluminescense Detector Assembly...............................................................................5-5
a. Reaction Chamber ..........................................................................................................5-5
b. Photodiode ......................................................................................................................5-5
6-0 TROUBLESHOOTING ..........................................................................................................6-1
6-1 Troubleshooting Leaks ..........................................................................................................6-1
6-2 Pocket PC Connection Failure ..............................................................................................6-1
6-3 Trouble LED ..........................................................................................................................6-1
7-0 REPLACEMENT PARTS ......................................................................................................7-1
8-0 RETURN OF MATERIAL ......................................................................................................8-1
8-1 Return Of Material .................................................................................................................8-1
8-2 Customer Service ..................................................................................................................8-1
8-3 Training..................................................................................................................................8-1
Instruction Manual
748467-A
January 2002
iv Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
LIST OF ILLUSTRATIONS
Figure 1-1. Absorption Bands of Sample Gas and Transmittance of Interference Filters ....... 1-3
Figure 1-2. Opto-Pneumatic Gas Detector............................................................................... 1-4
Figure 1-3. Overall NDIR Method............................................................................................. 1-5
Figure 1-4. Paramagnetic Oxygen Analysis............................................................................. 1-6
Figure 1-5. Reaction of Galvanic Cell ...................................................................................... 1-7
Figure 1-6. Electrochemical Oxygen Sensor............................................................................ 1-8
Figure 1-7. CPU ....................................................................................................................... 1-9
Figure 1-8. ADIO Board.......................................................................................................... 1-10
Figure 1-9. ADIO Block Diagram............................................................................................ 1-12
Figure 1-10. PCMCIA Interface................................................................................................ 1-14
Figure 1-11. Modem ................................................................................................................. 1-15
Figure 1-12. 128MB Flash Drive .............................................................................................. 1-16
Figure 1-13. Pocket PC ............................................................................................................ 1-18
Figure 1-14. Wireless LAN adapter.......................................................................................... 1-19
Figure 1-15. 500 Watts Power Supply ..................................................................................... 1-20
Figure 2-1. MicroCEM Outline and Mounting Dimensions....................................................... 2-2
Figure 2-2. MicroCEM Gas Connections ................................................................................. 2-4
Figure 2-3. MicroCEM Flow Diagram....................................................................................... 2-4
Figure 2-4. MicroCEM Installation and Test Setup Configuration............................................ 2-5
Figure 2-5. MicroCEM Electrical Connections ......................................................................... 2-6
Figure 2-6. MicroCEM Wiring Diagram .................................................................................... 2-7
Figure 2-7. Leak Test Flow Method ....................................................................................... 2-14
Figure 2-8. Leak Test Manometer Method............................................................................. 2-15
Figure 3-1. Pocket PC .............................................................................................................. 3-1
Figure 3-2. MicroCEM Front Panel .......................................................................................... 3-2
Figure 3-3. MicroCEM Pocket PC Display (Main Display Shown) ........................................... 3-3
Figure 3-4. MicroCEM Menu .................................................................................................... 3-4
Figure 3-5. Pocket PC Alarms Screen ..................................................................................... 3-4
Figure 3-6. MicroCEM Login .................................................................................................... 3-6
Figure 3-7. Current User Indication.......................................................................................... 3-6
Figure 3-8. Range Settings ...................................................................................................... 3-7
Figure 3-9. Auto Calibration Settings ....................................................................................... 3-8
Figure 3-10. Auto Calibration Time and Frequency ................................................................... 3-8
Figure 3-11. Manual Calibration................................................................................................. 3-9
Figure 3-12. Manual Calibration Results.................................................................................... 3-9
Figure 3-13. Limit Settings ....................................................................................................... 3-10
Figure 3-14. Calibration Gas Settings ...................................................................................... 3-10
Figure 3-15. Maintenance Mode Settings ................................................................................ 3-11
Figure 3-16. User Settings .......................................................................................................3-17
Figure 3-17. Auto Logoff........................................................................................................... 3-17
Figure 3-18. View Data Logs.................................................................................................... 3-21
Figure 3-19. View Data Logs Table.......................................................................................... 3-22
Figure 3-20. Real-Time Web Page .......................................................................................... 3-23
Figure 3-21. Emissions Selection............................................................................................. 3-24
Figure 3-22. Emissions Table .................................................................................................. 3-24
Figure 3-23. Calibration Table.................................................................................................. 3-25
Figure 3-24. Download Web Page ........................................................................................... 3-26
Figure 3-25. New Web Query .................................................................................................. 3-27
Figure 3-26. Auto Calibration ................................................................................................... 3-28
Figure 4-1. MicroCEM Software Block Diagram ...................................................................... 4-1
Figure 5-1. MicroCEM Component Location............................................................................ 5-2
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents v
Model MicroCEM
Figure 5-2. Converter Assembly .............................................................................................. 5-3
Figure 5-3. Personality Modules and Backplane. .................................................................... 5-4
Figure 5-4. Chemiluminescense Detector Assembly ............................................................... 5-6
Figure 5-5. Chemiluminescense Detector Assembly – Exploded View ................................... 5-7
LIST OF TABLES
Table 2-1. Interface Connections.......................................................................................... 2-11
Table 2-2. AC Power Connection Terminal Assignments..................................................... 2-11
Table 2-3. Analog Output Terminal Assignments ................................................................. 2-11
Table 2-4. Digital Output Terminal Assignments .................................................................. 2-12
Table 2-5. RS-232 Interface Terminal Assignments............................................................. 2-13
Table 2-6. RS-485 Terminal Assignments ............................................................................ 2-13
Table 2-7. LAN Interface Terminal Assignments .................................................................. 2-13
Table 2-8. Phone Line (Modem) Terminal Assignments ...................................................... 2-13
Table 2-9. Antenna (Peltier Power) Connection Terminal Assignments .............................. 2-14
Table 3-1. Status Values.........................................................................................................3-3
Table 3-2. Alarm Summary ..................................................................................................... 3-5
Table 3-3. Factory Settings – Calibration.............................................................................. 3-13
Table 3-4. Factory Settings - General................................................................................... 3-14
Table 3-5. PID Settings – Section Names ............................................................................ 3-15
Table 3-6. PID Settings – Sections Descriptions .................................................................. 3-16
Table 3-7. Measurement Log File Format............................................................................. 3-18
Table 3-8. Calibration Log File Format ................................................................................. 3-19
Table 3-9. Alarm Log File Format ......................................................................................... 3-20
Table 3-10. Average Period Selection .................................................................................... 3-21
Instruction Manual
748467-A
January 2002
vi Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-1
Model MicroCEM
PREFACE
The purpose of this manual is to provide information concerning the components, functions, in-
stallation and maintenance of the MicroCEM.
Some sections may describe equipment not used in your configuration. The user should become
thoroughly familiar with the operation of this module before operating it. Read this instruction
manual completely.
DEFINITIONS
The following definitions apply to DANGERS, WARNINGS, CAUTIONS and NOTES found throughout
this publication.
DANGER .
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.
Instruction Manual
748467-A
January 2002
P-2 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
INTENDED USE STATEMENT
The MicroCEM Continuous Emissions Monitor is intended for use as an industrial process meas-
urement device only. It is not intended for use in medical, diagnostic, or life support applications,
and no independent agency certifications or approvals are to be implied as covering such applica-
tions.
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,
do not operate or service this instrument before reading and understanding this instruction manual
and receiving appropriate training. Save these instructions.
DANGER.
ELECTRICAL SHOCK HAZARD
Do not open while energized. Installation requires access to live parts which can cause death or
serious injury.
For safety and proper performance this instrument must be connected to a properly grounded
three-wire source of power.
DANGER.
POSSIBLE EXPLOSION HAZARD
Do not operate without covers secure. Ensure that all gas connections are made as labeled and are
leak free. Improper gas connections could result in explosion and death.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-3
Model MicroCEM
WARNING: TOXIC GAS
DANGER.
TOXIC GAS
This device may contain explosive, toxic or unhealthy gas components. Before cleaning or chang-
ing parts in the gas paths, purge the gas lines with ambient air or nitrogen.
This unit’s exhaust may contain hydrocarbons and other toxic gases such as carbon monoxide.
Carbon monoxide is highly toxic and can cause headache, nausea, loss of consciousness, and
death.
Avoid inhalation of the exhaust gases at the exhaust fitting.
Connect exhaust outlet to a safe vent using stainless steel or Teflon line. Check vent line and con-
nections for leakage.
Keep all tube fittings tight to avoid leaks. See Sections 2-5 for leak check information.
WARNING.
DEVICE HAZARDOUS AREA CERTIFICATION(S)
Any addition, substitution, or replacement of components installed on or in this device, must be
certified to meet the hazardous area classification that the device was certified to prior to any such
component addition, substitution, or replacement. In addition, the installation of such device or
devices must meet the requirements specified and defined by the hazardous area classification of
the unmodified device. Any modifications to the device not meeting these requirements, will void
the product certification(s).
WARNING.
PARTS INTEGRITY AND UPGRADES
Tampering with or unauthorized substitution of components may adversely affect the safety of this
instrument. Use only factory approved components for repair.
Because of the danger of introducing additional hazards, do not perform any unauthorized modifi-
cation to this instrument.
Return the instrument to Rosemount Analytical Customer Service Center. See Section 8.
CAUTION.
PRESSURIZED GAS
This unit requires periodic calibration with a known standard gas. It also may utilizes a pressur-
ized carrier gas, such as helium, hydrogen, or nitrogen. See General Precautions for Handling and
Storing High Pressure Gas Cylinders, page P-5.
Instruction Manual
748467-A
January 2002
P-4 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
CAUTION.
HEAVY WEIGHT
Use two persons or a suitable lifting device to move or carry the instrument.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Preface P-5
Model MicroCEM
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°F (52°C). A flame should
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.
Instruction Manual
748467-A
January 2002
P-6 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
DOCUMENTATION
The following MicroCEM instruction materials are available. Contact Customer Service Center or the lo-
cal representative to order (See Section 8).
748467 Instruction Manual (this document)
748468 Instruction Manual, MicroCEM Sample Handling System
COMPLIANCES
This product may carry approvals from several certifying agencies. The certification marks appear on the
product name-rating plate.
CSA (Pending)
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-1
Model MicroCEM
SECTION 1
DESCRIPTION AND SPECIFICATIONS
1-1 OVERVIEW
The MicroCEM Analyzer Module is designed
to continuously determine the concentration of
O2 , CO, and NOx in a flowing gaseous mix-
ture. The concentration is expressed in per-
cent (%) or parts-per-million (PPM).
The sampled gas is collected from the stack
and prepared by the Probe/Sample Handling
System for analysis and processing by the
Analysis Enclosure. The Analysis Enclosure
shall be a standalone, computer-controlled
unit, utilizing PC/104 as the system bus.
The MicroCEM is enclosed in a rugged NEMA
4X, IP65 type enclosure, for harsh environ-
ment. The analysis enclosure utilizes convec-
tion cooling with no air intake and air vents.
The analysis enclosure is modular, general
purpose and easily expandable. It utilizes in-
dustry standard components such as PC/104
boards, and modular signal conditioning mod-
ules.
1-2 TYPICAL APPLICATIONS
SCR
Emission Compliance per EPA 40 CFR Part
60
Gas Turbines
Natural Gas Fired Boilers
Process Heaters
1-3 THEORY OF OPERATION
a. Chemiluminescense NOX
The NOx analyzer continuously analyzes
a flowing gas sample for NOx [nitric oxide
(NO) plus nitrogen dioxide (NO2)]. The
sum of the concentrations is continuously
reported as NOx.
The MicroCEM NOx Analyzer Module
uses the chemiluminescense method of
detection. This technology is based on
NO’s reaction with ozone (O3) to produce
NO2 and oxygen (O2). Some of the NO2
molecules produced are in an electroni-
cally excited state (NO2* where the * re-
fers to the excitation). These revert to the
ground state, with emission of photons
(essentially, red light). The reactions in-
volved are:
NO2 + O3 → NO2* + O2
NO2* → NO2 + red light
The sample is continuously passed
through a heated bed of vitreous carbon,
in which NO2 is reduced to NO. Any NO
initially present in the sample passes
through the converter unchanged, and
any NO2 is converted to an approximately
equivalent (95%) amount of NO.
The NO is quantitatively converted to NO2
by gas-phase oxidation with molecular
ozone produced within the analyzer form
air supplied by an external source. During
the reaction, approximately 10% of the
NO2 molecules are elevated to an elec-
tronically excited state, followed by imme-
diate decay to the non-excited state,
accompanied by emission of photons.
These photons are detected by a photo-
multiplier tube which produces an output
proportional to the concentration of NOx
in the sample.
To minimize system response time, an
internal sample bypass feature provides
high-velocity sample flow through the
analyzer.
b. Non-Dispersive Infrared (NDIR) CO
The optical bench can selectively meas-
ure multiple components in a compact
design by using a unique dual optical
bench design. Depending on the applica-
tion, any two combinations of NDIR chan-
nels can be combined on a single
chopper motor/dual source assembly.
Instruction Manual
748467-A
January 2002
1-2 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Other application-dependent options in-
clude a wide range of sample cell materi-
als, optical filters and solid state
detectors. The NDIR Microflow detector
consists of two chambers, measurement
and reference with an interconnected path
in which an ultra low flow filament sensor
is mounted. During operation, a pulsating
flow occurs between the two chambers
which is dependent upon: sample gas ab-
sorption, modulation by the chopper mo-
tor and the fill gas of the detector
chambers. The gas flow/sensor output is
proportional to the measured gas con-
centration. The optical bench is further
enhanced by a novel “Look-through” de-
tector technique. This design allows two
detectors to be arranged in series --- ena-
bling two different components to be
measured on a single optical bench. The
optical bench contains a unique eddy cur-
rent drive chopper motor and source as-
sembly. This design incorporates on
board “intelligence” to provide continuous
“self test” diagnostics.
c. Paramagnetic O2
The determination of oxygen is based on
the measurement of the magnetic sus-
ceptibility of the sample gas. Oxygen is
strongly paramagnetic, while other com-
mon gases are not. The detector used is
compact, has fast response and a wide
dynamic range. The long life cell is corro-
sion resistant, heated and may be easily
cleaned. It has rugged self-tensioning
suspension and is of welded non-glued
construction.
1-4 DETECTOR METHODOLOGIES
The MicroCEM can employ up to three differ-
ent measuring methods depending on the
configuration chosen. The methods are:
NDIR, Paramagnetic O2, Electrochemical O2,
and Chemiluminescense.
a. Non-Dispersive Infrared (NDIR)
The non-dispersive infrared method is
based on the principle of absorption of in-
frared radiation by the sample gas being
measured. The gas-specific wavelengths
of the absorption bands characterize the
type of gas while the strength of the ab-
sorption gives a measure of the concen-
tration of the gas component being
measured.
An optical bench is employed comprising
an infrared light source, two analysis cells
(reference and measurement), a chopper
wheel to alternate the radiation intensity
between the reference and measurement
side, and a photometer detector. The de-
tector signal thus alternates between con-
centration dependent and concentration
independent values. The difference be-
tween the two is a reliable measure of the
concentration of the absorbing gas com-
ponent.
Depending on the gas being measured
and its concentration, one of two different
measuring methods may be used as fol-
lows:
Interference Filter Correlation (IFC)
Method
With the IFC method the analysis cell is
alternately illuminated with filtered infrared
concentrated in one of two spectrally
separated wavelength ranges. One of
these two wavelength bands is chosen to
coincide with an absorption band of the
sample gas and the other is chosen such
that none of the gas constituents ex-
pected to be encountered in practice ab-
sorbs anywhere within the band.
The spectral transmittance curves of the
interference filters used in the MicroCEM
analyzer and the spectral absorption of
the gases CO and CO2 are shown in Fig-
ure 1-1. It can be seen that the absorption
bands of these gases each coincide with
the passbands of one of the interference
filters. The forth interference filter, used
for generating a reference signal, has its
passband in a spectral region where none
of these gases absorb. Most of the other
gases of interest also do not absorb within
the passband of this reference filter.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-3
Model MicroCEM
The signal generation is accomplished
with a pyroelectrical (solid-state) detector.
The detector records the incoming infra-
red radiation. This radiation is reduced by
the absorption of the gas at the corre-
sponding wavelengths. By comparing the
measurement and reference wavelength,
an alternating voltage signal is produced.
This signal results from the cooling and
heating of the pyroelectric detector mate-
rial.
Figure 1-1. Absorption Bands of Sample Gas and Transmittance of Interference Filters
Transmittance (%)
0 18 36 54 72 90
Transmittance (%)
0 15 30 54 60 75 90
CO2CO
Absorption Band
HC CO2 CO
Reference
3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 5200 5400 5600
Wave Length (nm)
Instruction Manual
748467-A
January 2002
1-4 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Opto-Pneumatic Method
In the opto-pneumatic method, a thermal
radiator generates the infrared radiation
which passes through the chopper wheel.
This radiation alternately passes through
the filter cell and reaches the measuring
and reference side of the analysis cell
with equal intensity. After passing another
filter cell, the radiation reaches the pneu-
matic detector.
The pneumatic detector compares and
evaluates the radiation from the measur-
ing and reference sides of the analysis
cell and converts them into voltage sig-
nals proportional to their respective inten-
sity.
The pneumatic detector consists of a gas-
filled absorption chamber and a compen-
sation chamber which are connected by a
flow channel in which a Microflow filament
sensor is mounted. This is shown in Fig-
ure 1-2.
In principle the detector is filled with the
infrared active gas to be measured and is
only sensitive to this distinct gas with its
characteristic absorption spectrum. The
absorption chamber is sealed with a win-
dow which is transparent for infrared ra-
diation. The window is usually Calcium
Fluoride (CaF2).
When the infrared radiation passes
through the reference side of the analysis
cell into the detector, no pre-absorption
occurs. Thus, the gas inside the absorp-
tion chamber is heated, expands and
some of it passes through the flow chan-
nel into the compensation chamber.
When the infrared radiation passes
through the open measurement side of
the analysis cell into the detector, a part
of it is absorbed depending on the gas
concentration. The gas in the absorption
chamber is, therefore, heated less than in
the case of radiation coming from the ref-
erence side. Absorption chamber gas be-
comes cooler, gas pressure in the
absorption chamber is reduced and some
gas from the compensation chamber
passes through the flow channel into the
absorption chamber.
The flow channel geometry is designed in
such a way that it hardly impedes the gas
flow by restriction. Due to the radiation of
the chopper wheel, the different radiation
intensities lead to periodically repeated
flow pulses within the detector.
The Microflow sensor evaluates these
flow pulses and converts them into elec-
trical pulses which are processed into the
corresponding analyzer output.
Figure 1-2. Opto-Pneumatic Gas Detector
Flow channel with
Microflow sensor
Absorption chamber CaF2 Window
Compensation chamber
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-5
Model MicroCEM
Overall NDIR Method
In the case of dual-channel analyzers, the
broadband emission from two infrared
sources pass through the chopper wheel.
In the case of the Interference Filter Cor-
relation (IFC) method, the infrared radia-
tion then passes through combinations of
interference filters. In the case of the
opto-pneumatic method, the infrared ra-
diation passes through an optical filter
depending on the application and need for
reduction of influences. Then the infrared
radiation enters the analysis cells from
which it is focused by filter cells onto the
corresponding detector. The preamplifier
detector output signal is then converted
into the analytical results expressed di-
rectly in the appropriate physical concen-
tration units such as percent volume,
ppm, mg/Nm3, etc. This is shown in Fig-
ure 1-3.
Figure 1-3. Overall NDIR Method
MOTOR
Adapter Cell
(high measuring range)
Light Source
Chopper Blade
Duplex Filter Disc
Analysis Cell
(measuring side)
Analysis Cell
(reference side)
Filter Cell
Gas Detector
Preamplifier
Chopper Blade
Analysis Cell
(undivided)
Filter Cell
Preamplifier
Pyroelectric Detector
(solid-state detector)
Instruction Manual
748467-A
January 2002
1-6 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
b. Paramagnetic Oxygen Method
The paramagnetic principle refers to the
induction of a weak magnetic field, paral-
lel and proportional to the intensity of a
stronger magnetizing field.
The paramagnetic method of determina-
tion of oxygen concentration utilizes nitro-
gen filled quartz spheres arranged at
opposite ends of a bar, the center of
which is suspended by and free to rotate
on a thin platinum wire ribbon in a cell.
Nitrogen (N2) is used because it is dia-
magnetic or repelled by a magnet.
A small mirror that reflects a light beam
coming from a light source to a photode-
tector, is mounted on the platinum ribbon.
A strong permanent magnet specifically
shaped to produce a strong, highly inho-
mogeneous magnetic field inside the
analysis cell, is mounted outside the wall
of the cell.
When oxygen molecules enter the cell,
their paramagnetism will cause them to
be drawn towards the region of greatest
magnetic field strength. The oxygen
molecules thus exert different forces on
the two suspended nitrogen filled quartz
spheres, producing a torque which
causes the mirror to rotate away from its
equilibrium position.
The rotated mirror deflects the incident
light onto the photodetector creating an
electrical signal which is amplified and fed
back to a coil attached to the bar holding
the quartz spheres, forcing the suspended
spheres back to the equilibrium position.
The current required to generate the re-
storing torque to return the quartz bar to
its equilibrium position is a direct measure
of the O2 concentration in the sample gas.
The complete paramagnetic analysis cell
consists of an analysis chamber, perma-
nent magnet, processing electronics, and
a temperature sensor. The temperature
sensor is used to control a heat ex-
changer to warm the measuring gas to
about 55 °C. Refer to Figure 1-4.
Figure 1-4. Paramagnetic Oxygen Analysis
Permanent Magnet
Platinum Wire
Mirror
Quartz Sphere(s)
Photodetector
Light
Source
Wire Loop
Amplifier
Display
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-7
Model MicroCEM
c. Electrochemical Oxygen Method
The electrochemical method of determin-
ing oxygen concentration is based on the
galvanic cell principle shown in Figure
1-5.
The electrochemical oxygen sensor (Fig-
ure 1-6) incorporates a lead and gold gal-
vanic process with a lead anode and a
gold cathode, using an acid electrolyte.
Oxygen molecules diffuse through a non-
porous Teflon membrane into the electro-
chemical cell and are reduced at the gold
cathode. Water is the byproduct of this
reaction.
On the anode, lead oxide is formed which
is transferred into the electrolyte. The lead
anode is continuously regenerated and,
therefore, the electrode potential remains
unchanged for a long time. The rate of
diffusion and corresponding response
time (t90) of the sensor is dependent on
the thickness of the Teflon membrane.
The electric current between the elec-
trodes is proportional to the O2 concentra-
tion in the sample gas being measured.
The resultant signal is measured as a
voltage across the resistor and thermistor,
the latter of which is used for temperature
compensation. A change in the output
voltage (mV) represents oxygen concen-
tration.
NOTE
The electrochemical O2 cell requires a
minimum internal consumption of
oxygen. Sample gases with an oxygen
concentration of less than 2% could
result in a reversible detuning of sensi-
tivity and the output will become un-
stable. The recommended practice is
to purge the cell with conditioned am-
bient air between periods of measure-
ment. If the oxygen concentration is
below 2% for several hours or days,
the cell must be regenerated for about
one day with ambient air. Temporary
flushing with nitrogen (N2) for less than
one hour (analyzer zeroing) will have
no effect on the sensitivity or stability.
Figure 1-5. Reaction of Galvanic Cell
(Red) V out (Black)
Thermistor (5) Resistor (6)
(-) (+)
Gold Lead
Cathode (2) Anode (1)
O2 + 4 H + 4 e → 2 H2O2 Pb + 2 H
2O → 2PbO + 4 H + 4 e
Electrolyte (3)
(ph 6)
Summary reaction O2 + 2 Pb → 2 PbO
Instruction Manual
748467-A
January 2002
1-8 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Figure 1-6. Electrochemical Oxygen Sensor
Lead Wire (Anode)
Lead Wire (Cathode)
Anode (Lead)
O-Ring
Plastic Disc
Plastic Disk
Black
Red
Teflon Membrane
Cathode (Gold Film)
Sponge Disc
Acid Electrolyte
Thermistor
Resistor
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-9
Model MicroCEM
1-5 CENTRAL PROCESSING UNIT
The CPU is an Embedded Pentium-like AT
Computer in 5.75” x 8” form factor. The pe-
ripherals integrated on board are: SVGA, 4
serial ports and one parallel port, Fast
Ethernet ctrl., IDE, Keyboard, Mouse, 2 USB.
The module is built around the Intel Tillamook
processor and is equipped with 64MB
SDRAM. The module also integrates one
socket for SSD that performs like an HDD unit
and can be used to store the operating sys-
tem, the user’s programs and the data files.
Other peripherals available on board are the
Floppy disk controller, the parallel port. The
CPU is shown in Figure 1-7.
a. Embedded Enhanced Bios
Award, 256KB Flash Bios.The Bios is
immediately activated when you first turn
on the system. The Bios reads system
configuratio information in CMOS RAM
and begins the process of checking out
the system.
Figure 1-7. CPU
b. Specifications
Architecture: ................................. PC/AT Compatible
Dimensions: .................................. 5.75” x 8”
Processor: .................................... Intel Tillamook processor - 266MHz
Memory: ........................................ 64 MB SDRAM
Ram/Rom disk: ............................. 1 x 32 pin socket (max. 288MB)
Operating System: ........................ WinNT
BIOS: ............................................ Standard with embedded extensions
Interfaces: ..................................... IDE ctrl
Floppy ctrl
SVGA-CRT
10/100 Mbps Fast Ethernet
2 USB ports
4 RS232 serial ports (one can be 485)
Parallel port (bi-directional EPP-ECP)
Keyboard PS/2
Mouse PS/2
Bus: .............................................. AT bus according to PC/104 spec.
Power Supply: .............................. AT/ATX
Connectors: .................................. COM1-4, SVGA, USB 1 and 2, PS/2 Mouse/Keyboard, ATX Power,
Parallel, IDE, Floppy, and Fast Ethernet
Instruction Manual
748467-A
January 2002
1-10 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
1-6 ANALOG/DIGITAL I/O BOARD
The Analog/Digital IO (ADIO) Board is an off-
the-shelf, complete data acquisition system in
a compact PC/104 packaging. The analog
section contains 32 input channels, multi-
plexed A/D converter with 16 bit resolution
and 10uS conversion time. Input ranges are
+/-5v or +/- 10V. It also includes on-board
DMA support. The analog output section in-
cludes two 12 bit D/A converters. Both sec-
tions features simplified calibration using on
board programmable digital potentiometer.
The digital I/O section provides 24 digital I/O
lines, which feature high current TTL drivers.
The board requires only +5V from the system
power supply and generates its own +/-15V
analog supplies on board. The board operates
over the Extended Temperatures range of -25
to +85C. Figure 1-8 depicts the ADIO board
and Figure 1-9 depicts the ADIO block dia-
gram.
Figure 1-8. ADIO Board
a. Automatic Calibration
The ADIO board features automatic cali-
bration of both analog inputs and outputs
for enhanced accuracy and reliability. The
potentiometers, which are subject to tam-
pering and vibration, have been elimi-
nated. Instead, all A/D calibration
adjustments are performed using an octal
8-bit DAC. The DAC values are stored in
an EEPROM and are recalled automati-
cally on power up. The board includes
three precision voltage references for
negative full scale, zero, and positive full-
scale. A calibration utility program pro-
vided with the board allows you to recali-
brate the board anytime, in both unipolar
and bipolar modes, and store the new
settings in EEPROM.
Autocalibration applies to the 4 D/A chan-
nels as well. The full-scale D/A range is
selected with a jumper block. The analog
outputs are fed back to the A/D converter
so they can be calibrated without user in-
tervention. Again, calibration settings are
stored in EEPROM and automatically re-
called on power-up.
b. Analog Inputs
The ADIO board provides split configura-
tion capability, with more total input chan-
nels than any other PC/104 analog I/O
board. The board can be user-configured
in any of three ways:
Channels Format
32 32 single-ended
24 8 differential, 16 single-ended
16 16 differential
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-11
Model MicroCEM
c. Programmable Input Ranges
A programmable gain amplifier, pro-
grammable unipolar/bipolar range, and
programmable 5V/10V full-scale range
combine to give the ADIO board a total of
10 different possible analog input ranges.
All range settings are controlled in soft-
ware for maximum flexibility.
Mode Full-
scale Gain Input
Range Resolution
Unipolar 10V 10-10V 0.153mV
Unipolar 5V 10-5V 0.076mV
Unipolar 5V 20-2.5V 0.038mV
Unipolar 5V 40-1.25V 0.019mV
Unipolar 5V 80-0.625V 0.0096mV
Bipolar 10V 1±10V 0.305mV
Bipolar 5V 1±5V 0.153mV
Bipolar 5V 2±2.5V 0.076mV
Bipolar 5V 4±1.25V 0.038mV
Bipolar 5V 8±0.625V 0.019mV
d. Enhanced Trigger and Sampling Con-
trol Signals
The ADIO board has an extra A/D trigger
and sample control signals in the design.
Seven auxiliary digital I/O lines on the
analog I/O connector provide a sam-
ple/hold output signal, A/D trigger in and
out lines (to enable synchronization of
multiple boards) and external A/D clock-
ing.
e. Analog Outputs
The ADIO board contains 4 12-bit analog
outputs with autocalibration capability. Up
to 5mA of output current per channel can
be drawn from all channels simultane-
ously. Both unipolar and bipolar output
ranges are supported with jumper con-
figuration. And on power up, all outputs
are reset to 0V automatically.
Mode Full-
scale
Output
Range Resolution
Unipolar 10V 0-10V 2.44mV
Unipolar 5V 0-5V 1.22mV
Bipolar 10V ±10V 4.88mV
Bipolar 5V ±5V 2.44mV
f. FIFO and 16-Bit Bus Interface
An on-board 1024-byte FIFO enables the
ADIO board to work with Windows 95 and
NT by dramatically reducing the interrupt
overhead. Each interrupt transfers 256 2-
byte samples, or half the buffer, so the
interrupt rate is 1/256 the sample rate.
FIFO operation can be disabled at slow
sample rates, so there is no lag time be-
tween sampling and data availability. The
16-bit interface further reduces software
overhead by enabling all 16 A/D bits to be
read in a single instruction, instead of re-
quiring 2 8-bit read operations. The net
result of this streamlined design is that the
ADIO board supports gap-free A/D sam-
pling at rates up to 200,000 samples per
second, twice as fast as our previous
boards.
Instruction Manual
748467-A
January 2002
1-12 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Figure 1-9. ADIO Block Diagram
16-BIT A/D
CONVERTER
12-BIT A/D
CONVERTERS
1K X8
FIFO
82C54
COUNTER/TIMER
10 MHZ
OSCILLATOR
AUTOCALIBRATION
CIRCUIT
DC/DC
BUFFER
BUFFER
BUFFER
BUFFER
HIGH CURRENT
DRIVE
+15V
ADDR
CTRL
16-BIT DATA
+15V -15V
PC/104
BUS
PROGRAMMABLE
GAIN AMP
X1,2,4,8
0-31 SE
0-15 DI
ANALOG
INPUTS
ANALOG
OUTPUTS 0-3
TIMING AND
CONTROL SIGNALS
PORT A
24 DIGITAL I/O
PORT B
ACK/STROBE
PORT CL
PORT CH
INPUT MUX
MASTER
CONTROLLER
8255 CIRCUIT
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-13
Model MicroCEM
g. Specifications
Analog Inputs
Number of inputs ................... 32 single-ended, 16 differential, or 16 SE + 8 DI; user selectable
A/D resolution ........................ 16 bits (1/65,536 of full scale)
Bipolar ranges ....................... ±10V, ±5V, ±2.5V, ±1.25V, ±0.625V
Unipolar ranges ..................... 0-10V, 0-5V, 0-2.5V, 0-1.25V, 0-.625V,
Input bias current................... 100pA max
Overvoltage protection .......... ±35V on any analog input without damage
Nonlinearity............................ ±3LSB, no missing codes
Conversion rate ..................... 200,000 samples/sec.max
On-board FIFO ...................... 1K x 8(512 16-bit samples)
Calibration.............................. Automatic;values stored in EEPROM
Analog Outputs
Number of outputs ................. 4
D/A resolution ........................ 12 bits (1/4096 of full scale)
Output ranges........................ ±5, ±10, 0-5, 0-10
Output current........................ ±5mA max per channel
Settling time........................... 6µS max to 0.01%
Relative accuracy .................. ±1 LSB
Nonlinearity............................ ±1 LSB, monotonic
Reset ..................................... All channels reset to OV
Calibration.............................. Automatic; values stored in EEPROM
Digital I/O
Main I/O ................................. 24 programmable I/O
Input current........................... ±1µA max
Output current........................
Logic 0 ................................... 64mA max per line
Logic 1 ................................... -15mA max per line
Auxilary I/O ............................ 4 inputs, 4 outputs, optional use as trigger/control lines
Counter/Timers
A/D Pacer clock ..................... 32-bit down counter
(2 82C54 counters cascaded)
Clock source.......................... 10MHz on-board clock or external signal
General purpose.................... 16-bit down counter (1 82C54 counter)
General
Power supply ......................... +5VD±10%@200mA typ
Operating temperature .......... -25 to +85°C
Weight.................................... 3.4oz/96g
Instruction Manual
748467-A
January 2002
1-14 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
1-7 PCMCIA ADAPTER
The PCMCIA adapter board (Figure 1-10)
supports Type I, II and III PCMCIA cards. The
board is in full compliance with Microsoft FFS-
II, PCMCIA V.2 and JEIDA 4.1 specifications.
The PCMCIA socket accepts The following
PCMCIA cards:
Type I Memory, Flash/SRAM/ROM
Type II Fax, Modem, LAN, Wireless LAN,
and SCSI
Type III ATA mass storage
Figure 1-10. PCMCIA Interface
a. Features
Dimensions
Compliant with the PC/104 standard
Compatible with AT PC/104 CPU mod-
ules
Functions on board
2 PCMCIA slots
Optional remote socket
PCMCIA features
Supports PCMCIA V.1.0 and V.2.0
Supports PCMCIA types I, II and III
Supports both I/O and Memory Card
Supports Hot insertion
Operating Systems
DOS and Windows and any other RTOS
that supports PCMCIA
Connectors
J1 : PCMCIA 2 slots connector
J3: PC/104 8 bit connector (XT compati-
ble)
J4 : PC/104 16 bit extension (AT exten-
sion compatible).
b. Software
Software mappable memory windows and
one I/O window.
Jumperless interrupt steering from PC
Card to system.
Complete set of device drivers complying
with PCMCIA V2.1 /JEIDA V4.1, running
under MS-DOS or MS-WINDOWS:
• PCMCIA socket & card services drivers
• Flash File System
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-15
Model MicroCEM
1-8 MODEM
The PC/104 Modular Modem is a self-
contained modem module that provides the
flexibility to include modem functionality into
embedded system, with minimal engineering
resources. The PC/104 Modular Modem is full
featured including high-speed data and fax
transmission. The PC/104 Modular Modems
support both dial-up and 2-wire leased-line.
Figure 1-11 depicts the Modem.
Figure 1-11. Modem
a. Features
V.90, 56 kbps data (560PC/104)
V.34, 33.6 kbps data (336PC/104)
14.4 kbps fax
Voice playback and record
DTMF decode
-40oC to 85oC operation
3.775" x 3.550" x 0.568" (with modular
phone jack)
3.775" x 3.550" x 0.435" (without modular
phone jack)
8 bit PC/104 bus type
V.42 and MNP 2-4 error correction
V.42bis, and MNP-5 data compression
FCC Part 68 registered
FCC Part 15 compliant
2 wire leased-line and dial up support
Industry Canada CS-03 certified
Instruction Manual
748467-A
January 2002
1-16 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
1-9 FLASH DRIVE
Figure 1-12. 128MB Flash Drive
a. Specifications
System Performance
All values quoted are typical at ambient temperature and nominal supply voltage unless otherwise
stated.
All performance timing assumes the controller is in the default (i.e., fastest) mode.
Start-up Time
Sleep to Write................................ 2.5 msec max.
Sleep To Read .............................. 2.5 msec max.
Reset to Ready.............................. 50 msec typical, 400 msec max.
Data Transfer Rate
to/from host............................ 16.0 MB/sec burst
Active to Sleep Delay .................... Programmable
Controller Overhead
Command to DRQ ................. <1.25 msec
Power Requirements
All values quoted are typical at ambient temperature and nominal supply voltage unless otherwise
stated.
DC Input Voltage
Commercial ................................... 3.3 V ± 5%, 5 V ± 10%
Industrial ........................................ 3.3 V ± 5%, 5 V ± 5%
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-17
Model MicroCEM
Power Dissipation
Sleep mode currently is specified under the condition that all card inputs are static CMOS levels and in
a "Not Busy" operating state.
The currents specified show the bounds of programmability of the product.
Sleep ............................................. 200 µA @3.3 V 500 µA @5.0 V
Read .............................................. 35 mA RMS @3.3 V 50 mA RMS @5.0 V
Write .............................................. 35 mA RMS @3.3 V 50 mA RMS @5.0 V
Environmental Specifications
Temperature
Operating Commercial .......... 0°C to 60°C
Operating Industrial .............. -40°C to 85°C
Non-Operating Commercial .. -25°C to 85°C
Non-Operating Industrial ...... -50°C to 100°C
Humidity
Operating............................... 8% to 95%, non-condensing
Non-Operating ...................... 8% to 95%, non-condensing
Acoustic Noise ...................... 0dB
Vibration
Operating............................... 15 G peak to peak max.
Non-Operating ...................... 15 G peak to peak max.
Shock
Operating............................... 1,000 G max.
Non-Operating ....................... 1,000 G max.
Altitude (relative to sea level)
Operating/Non-Operating ..... 80,000 feet max.
System Reliability and Maintenance
MTBF1 ................................... >1,000,000 hours
Preventive Maintenance ....... None
Data Reliability ...................... <1 non-recoverable error in 10(14) bits read
Physical Specifications
Length............................................ 100.2mm ± 0.51mm
Width ............................................. 69.85mm ± 0.51mm
Thickness (Body) .......................... 9.6mm ± 5.0mm
Thickness (Removable Edge) ....... N/A
Weight ........................................... 160 g. max
1 Mean Time Between Failures
Instruction Manual
748467-A
January 2002
1-18 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
1-10 POCKET PC
The Pocket PC acts as an Graphic User Interface to the MicroCEM unit.
a. Specifications
Processor ..................................... 133MHz 32-bit Hitachi SH3 processor
Memory ......................................... 32MB RAM, 16MB ROM
Display .......................................... 240 x 320 pixels LCD, Rich-color CSTN, backlit
User Interface ............................... Pen-and-touch interface (stylus included)
Handwriting recognition software
On-screen keyboard
4 user-configurable quick launch screen icons
2 quick keys (Record and Scroll/Action)
Notification LED
Power ........................................... Built-in Lithium-Ion rechargeable battery
8 hours of battery life 1
Worldwide auto-voltage AC adapter
Input/Output .................................. IrDA infrared port
RS232 serial port
USB port
Compact Flash Type I card slot
AC input jack
Stereo earphone jack
Sound ........................................... Audio speaker and microphone
Built-in voice recorder
Digital audio player compatible
Other Standard Features............... USB cradle
Serial cable
Earphones
Removable metal cover
Password protected and DMI compatible
Dimensions ................................... 5.2 × 3.1 × 0.6 in (13 × 7.8 × 1.6 cm)
Weight .......................................... 9.1 oz (260 g) with battery
Operating Temperature ................. 32–104° F (0–40° C)
Storage Temperature ................... 32–140° F (0–60° C)
Humidity......................................... 90% relative humidity at 104° F (40° C)
Figure 1-13. Pocket PC
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-19
Model MicroCEM
1-11 WIRELESS LAN ADAPTER
Wireless LAN adapter is an option to allow the user to remove the Pocket PC from the enclosure and to
operate the MicroCEM from a distance up to 1000 feet. Figure 1-14 depicts the wireless LAN adapter.
Figure 1-14. Wireless LAN Adapter
a. Specifications
Data Rate ...................................... 11 Mbps send/receive with automatic fallback for extended range
Useful Range................................. Up to 1000 feet (300 meters) open field; 300 feet (90 meters) typi-
cal indoor installations (intervening metal and thick concrete struc-
tures degrade performance and range)
Security.......................................... Supports Wired Equivalent Privacy (WEP) which provides 64-bit
and 128-bit data encryption; additional security through the use of a
32-character network system ID
Standard Support .......................... Interoperable with 2 Mbps IEEE 802.11 Direct Sequence Spread
Spectrum (DSSS) and 802.11b (11 and 5.5 Mbps) extension
OS Support.................................... NDIS drivers included for Windows 95, 98, ME and NT and 2000
Channels ....................................... Supports 11 US/Canada and 13 ETSI selectable, fully-independent
channels
Transmit Power ............................. 25mW typical
Radio Frequency ........................... 2.4 to 2.4835 GHz
Power Requirement....................... PC Card: 5 VDC @ 217 mA average with 338 mA maximum on
transmit; 215 mA continuous receive, 17 mA standby
PCI: 5VDC @ 247 mA average with 368 mA maximum on transmit;
245 mA continuous receive, 47 mA standby
Status lights ................................... 1 (Reports: Link, Power)
Regulatory Approval...................... US - FCC part 15B and 15C, IC RSS-210
ETSI - FCC part 15B, CE, ETS 300 328, ETS 300 826, C-Tick
(Australia)
Physical Specification.................... PC Card: PCMCIA Type II PC Card
PCI: 32-bit, 5V Key, Full Plug-N-Play
Antenna(s) ..................................... Integrated: Printed dual diversity
External: 2.2dBi dipole; additional options for specific installation
needs
Instruction Manual
748467-A
January 2002
1-20 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
1-12 500 WATTS POWER SUPPLY
The 500 Watts power supply combine high performance midrange power with high power density (4.4
watts/in 3 ),active Power Factor Correction (PFC) and high reliability to meet the requirements of commer-
cial and industrial systems. Providing tightly regulated DC power, the power supply delivers full output per-
formance with only 300 Linear Feet per Minute (LFM) forced air-cooling by utilizing a factory installed fan.
Other features include remote sense, power fail, logic level inhibit, DC power good. Main channel current
sharing is provided for redundant applications. The power supply is approved to the latest international
regulatory standards, and displays the CE Mark.
Figure 1-15. 500 Watts Power Supply
a. Features
• Power Factor Correction (PFC) Meets EN61000-3-2
• Fully Regulated Outputs
• Remote Sense
• Current Share, Power Fail, and Power Good Signals
• Overtemperature, Overvoltage, and Overcurrent Protected
• Available with Metric or SAE Mountings
• Input Transient & ESD Compliance to EN61000-4-2/-3/-4/-5
• Fan Output Voltage and Optional Fan
• Optional Isolation Diodes for Parallel or Redundant Operation
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-21
Model MicroCEM
1-13 MicroCEM SPECIFICATIONS
a. Analyzer
Power ............................................ Universal Power Supply 85 – 264 VAC, 50 – 60 Hz, + 10%, 500
Watts Maximum at Start Up. 250 Watts Nominal
Microprocessor.............................. Intel Pentium processor, 266MHz, 64MB RAM, PC/104 architec-
ture, Windows NT embedded Platform
Pocket PC...................................... 133MHz, 21 bit Hitachi SH3 processor, 32MB RAM 16MB ROM,
240 X 320 pixels LCD, Riuch color, backlit, Wireless LAN optional
Detectors//Number ........................ NDIR, Paramagnetic, Electrochemical, Chemiluminescense// Up to
three in one analyzer
Mounting........................................ Wall Mount
Area Classification......................... General Purpose / NEMA 4X (IP65) Fiberglass Enclosure
Ambient Range
Temperature ......................... -30° to 50° Celsius.
Relative Humidity................... 5 to 99%
Inputs/Outputs
Digital..................................... RS-485 Serial Port. (Multi-Drop Network)
RS-232 Serial Port.
LAN, Ethernet 10/100-BaseT
Modem.
Connectivity Protocols ........... HTML (Web Browser) – Status, file transfer Modem/Webrowser
TCP/IP..Modbus (In Process)
Foundation Fieldbus (In Process)
Analog Current Outputs......... 3 Isolated 4-20 mA DC, 500 ohms Max Load (O2, CO, NOX)
Analog Inputs:MW, Fuel Flow
Digital OutputsTrouble Alarm, Sample Pump on/off, Drain Pump
on/off, Purge on/off, Calibrate on/off – 110VAC @ 1amp Dry Con-
tact
O2 Limit Exceed, CO Limit Exceed, NOx Limit Exceed, O2 Low
Range, CO Low Range, NOX Low Range. - TTL: 5 VDC Max Cur-
rent 20 mA
Digital Inputs.......................... Process on/off, Initiate Auto Calibration
Instrument Weight ......................... 62 lbs. Typical
Dimensions.................................... 24“ x 20“ x 12“ (HxWxD)
Ranges .......................................... O2: 0 –25%
CO: 0 –100ppm Selectable to 1000ppm
NOX: 0 – 10ppm Selectable to 1000ppm
Sample Temperature..................... 0° C to 55° C
Sample Flow Rate ......................... .5 to 1.5 liters/min
Warm Up Time .............................. Max 25 minutes @ low ambient temperatures
Instruction Manual
748467-A
January 2002
1-22 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Paramagnetic
O2
Electro-
Chemical
O2
NDIR
CO
Chemiluminescense
NOX
Linearity < ± 1% < ± 1% < ± 1% < ± 1%1
Zero Drift < ± 1% /day < ± 1% /day < ± 1% /day < ± 1% /day 1
Span Drift < ± 1% /day < ± 1% /day < ± 1% /day < ± 1% /day 1
Repeatability < ± 1% < ± 1% < ± 1% < ± 1%/day 1
Response Time (t90) 10< ± t90< ±-15 10< ± t90< ± 15 15s< ± t90< ± 20s 15s< ±-t90< ± 20s
Influence of Ambient
Temperature
(-20°C to 45°C)
On Zero
On Span
< ± 1%
< ± 1%
< ± 1%
< ± 1%
< ±-2%
< ±-2%
< ±-2%
< ±-2%
b. Probe/Sample Handling
Power ............................................ Universal Power Supply 85 – 264 VAC, 50 – 60 Hz, + 10%
500 Watts Maximum at Start Up. 250 Watts Nominal
Mounting........................................ Wall Mount
Area Classification......................... General Purpose / NEMA 4X (IP65) Fiberglass Enclosure
Ambient Range
Temperature .......................... -30° to 50° Celsius
Relative Humidity................... 5 to 99%
Instrument Weight ......................... 75 lbs. Typical
Dimensions.................................... 24“ x 24“ x 12“ (HxWxD)
Stack Sample Moisture ................. Up to 25%
Sample Cooler............................... Thermo Electric dual pass Chiller.
Permeation Tube (-30° C) dewpoint.
Customer instrument air required @ 5 L/M, -40° C dewpoint
Max. Stack Temperature ............... 500° F (Higher temperatures available by utilizing elongated
spools)
Stack Pressure .............................. -5 to 15 inches H2O
Sample Flow Rate ......................... 1 L/min from sample handling enclosure to Analysis enclosure
Response Time (Max distance between Analysis Enclosure and Sample Conditioning/Probe)
Enclosure is 300'. (Response time is 20 seconds/100' w/1/4" tub-
ing).
Probe Length................................. 48" length 316 SS Probe with .5 micron sintered filter. (Customer
to cut to length in field.)
Mounting Flange............................ Optional 4“ 150#
Sample Pump................................ 316 SS diaphragm type
Instrument Air Requirements......... Instrument grade air required. 15 SCFM @ 60 -100 PSIG (30 sec-
onds 2 times per day). (Pressure Regulation by Customer.)
1 0-10ppm NOx range is <± 3%.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-1
Model MicroCEM
SECTION 2
INSTALLATION
WARNING
ELECTRICAL SHOCK HAZARD
POSSIBLE EXPLOSION HAZARD
Do not open while energized. Do not op-
erate without doors and covers secure.
Installation requires access to live parts
which can cause death or serious injury.
DANGER.
ELECTRICAL SHOCK HAZARD
Installation and servicing of this device re-
quires access to components that may
present electrical shock and/or mechanical
hazards. Refer installation and servicing to
qualified service personnel.
CAUTION.
CODE COMPLIANCE
Installation of this device must be made in
accordance with all applicable national
and/or local codes. See specific refer-
ences on the installation drawing located
in the rear of this manual.
CAUTION.
PRESSURIZED GAS
This unit requires periodic calibration with
a known standard gas. It also may utilizes
a pressurized carrier gas, such as helium,
hydrogen, or nitrogen. See General Pre-
cautions for Handling and Storing High
Pressure Gas Cylinders, page P-5.
2-1 OVERVIEW
a. Limitations
Ambient Temperature:-30° to 50° Celsius
(-4° to 122° F)
Relative Humidity:5% to 99%
b. Mounting Options
Although the MicroCEM is enclosed in an
environmentally sealed enclosure, it
should be protected from direct sunlight.
In areas subjected to harsh winter cli-
mates, protection should be provided from
sun, rain and snow. A corrugated awning
or other suitable means can be provided
to meet these conditions.
2-2 LOCATION
The MicroCEM is designed to be installed in
an outdoor environmental location. It is rec-
ommended that the analyzer be located out of
direct sunlight and direct rain/snow to the ex-
tent possible.
The MicroCEM analysis enclosure should be
installed as near as possible to the
probe/sample handling enclosure, in order to
avoid low response time caused by long sam-
ple gas lines.
Instruction Manual
748467-A
January 2002
2-2 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Figure 2-1. MicroCEM Outline and Mounting Dimensions
1.5
38.1
17.9
456.9
MOUNTING
DIMENSION
1.1
27.9
SAMPLE
CALIBRATION
GAS 3
GAS 2
GAS 1
OZONE / AIR
VENT
11.6
295.3
4.3
109.2
4.9
124.5
1.5
38.1 TYP
7.1
180.3
TYP
HINGE
KEY LOCK
25.2
640.1
20.2
513.1
1.1
27.9 TYP
25.5
647.7
MOUNTING
DIMENSION
24.6
624.8
CLEARANCE HOLE
FOR 3/8 BOLT
(4 PLACES)
4.9
124.5
AC POWER
INPUT
ANALOG
INTERFACE
DIGITAL
INTERFACE
RS232
INTERFACE
LAN
INTERFACE
RS485
INTERFACE
PHONE
LINE
ANTENNA
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-3
Model MicroCEM
2-3 GASES
NOTE
For external gas lines, the use of new tub-
ing throughout is strongly recommended.
The preferred type is teflon or stainless
steel, sealed at both ends.
a. Connection
Besides sample gas, the MicroCEM re-
quires other gases for operation. In most
cases, one or more Calibration Standards
must be provided. These should be cylin-
ders of gas which closely resemble the
expected sample, both in species and
concentrations. These calibration gases
are normally introduced into the system
as an input to the Sample Conditioning
Plate Option or sample conditioning may
be provided by others.
Each gas cylinder should be equipped
with a clean, hydrocarbon free two-stage
pressure regulator with indicating gauges
of approximately 0 to 3000 psig (0 to 20.7
bar) for cylinder pressure and 0 to 100
psig (0 to 6.7 bar) for delivery pressure.
Pressure regulators should have a metal-
lic as opposed to elastomeric diaphragm,
and provide for ¼ inch compression fitting
outlet and should be LOX clean.
NOTE
All connections specified in the In-
stallation Drawing, in conjunction with
the Application Data Sheet, should be
made.
b. Conditioning
All gases must be supplied to the ana-
lyzer as conditioned gases! When the
system is used with corrosive gases, it
must be verified that there are no gas
components which may damage the gas
path components.
The gas conditioning must meet the fol-
lowing conditions:
• Free of condensable constituents
• Free of dust above 2 µm
• Free of aggressive constituents which
may damage the gas paths
• Temperature and pressure in accor-
dance with the specifications
When analyzing vapors, the dewpoint of
the sample gas must be at least 10 °C
below the ambient temperature in order to
avoid the precipitation of condensate in
the gas paths.
An optional barometric pressure compen-
sation feature can be supplied. This re-
quires a pressure sensor with a range of
800 – 1,100 hPa. The concentration val-
ues computer by the detectors will then
be corrected to eliminate erroneous
measurements due to changes in baro-
metric pressure.
The gas flow rate must be in the range of
0.2 l/min to a maximum of 1.5 l/min. A
constant flow rate of 1 l/min is recom-
mended.
NOTE
The maximum gas flow rate for par-
amagnetic oxygen detectors is 1.0
l/min!
Instruction Manual
748467-A
January 2002
2-4 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
REGULATOR
904017
2-WAY VALVE
MANIFOLD
ASSEMBLY
GAUGE
638614
FLOWMETER
W/VALVE
CONVERTER
656715
3-WAY
VALVE
PARAMAGNETIC
DETECTOR
90003311
OZONE GENERATOR
659494
NDIR DETECTOR
90003225
IN OUT
VENT
CAPILLARY
634398
DETECTOR
659754
SAMPLE
CAL
CAL GAS 3
CAL GAS 2
CAL GAS 1
OZONE AIR
EXHAUST
Figure 2-2. MicroCEM Gas Connections
Figure 2-3. MicroCEM Flow Diagram
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-5
Model MicroCEM
Figure 2-4. MicroCEM Installation and Test Setup Configuration
3¼” Teflon tubing. Customer supplied.
2Drain to safe location.
1Customer supplied.
Electrical connections. See
Section 2-4 and Figure 2-5.
MicroCEM Analyzer
Sample Handling System
Nitrogen
O2 / NO
High Range
O2 / NO
Mid Range
Dry Contact
Initiate Auto Calibration
1
1
Sample
Flow
Stack
Sample Inlet
½” FPT
Instrument
Air Atmospheric
Pressure
2Sample From
Analyzer
Calibration Line
to Analyzer
3
3
Power In
115 VAC 60Hz 5A
Instruction Manual
748467-A
January 2002
2-6 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
2-4 ELECTRICAL CONNECTIONS
NOTE
The enclosure is a NEMA 4. All entry loca-
tions must be sealed.
Connect all required signal cables to the con-
nections at the bottom of the MicroCEM. The
cable locations are indicated on the inside
bottom cover of the MicroCEM box. The ac-
tual electrical connections will be specified in
the Application Data package. All connections
are not necessary for every application.
Cable length for these signals should not ex-
ceed 3,000 feet (914 meters), to avoid exces-
sive capacitance and corresponding signal
distortion.
All electrical connections are made through
the bottom of the MicroCEM enclosure using
circular connectors.
AC POWER INPUT – J1 LAN INTERFACE – J5
ANALOG INTERFACE – J2 RS485 INTERFACE – J6
DIGITAL INTERFACE – J3 PHONE LINE – J7
RS232 INTERFACE - J4 ANTENNA – J8
Figure 2-5. MicroCEM Electrical Connections
AC POWER
INPUT
ANALOG
INTERFACE
DIGITAL
INTERFACE
RS232
INTERFACE
LAN
INTERFACE
RS485
INTERFACE
PHONE
LINE
ANTENNA
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-7
Model MicroCEM
Figure 2-6. MicroCEM Wiring Diagram
PHONE
HI VOLTAGE
PWR SUP -1.7KV
A15
PC-104
CONVERTER HTR J4
TEMP SENSOR J9
THERMAL SWITCH
THERMAL SWITCH J8
TEMP SENSOR/HTR J8
PHOTODIODE J1
SAMPLE PRESS LIMIT
OZONE PRESSURE
LIGHT SOURCE P4
TEMP SENSOR P3
LIGHT BARRIER SYNC P2
CO SIGNAL P1
STEPPER MOTOR P5
O2
INPUT SENSOR P1
TEMP SENSOR P1
ELECTROCHEMICAL
DETECTOR
(PMD OPTION)
ZERO VALVE
(
SV1
)
J1
SAMPLE VALVE
SV4
J1
MID VALVE
(
SV2
)
J2
SPAN VALVE
(
SV3
)
J3
FAN POWER J2
TEMP SENSOR
(
INT
)
J3
PELTIER POWER J1
TEMP SENSOR
(
EXT
)
J4
4-20mA CURR LOOP 2
4-20mA CURR LOOP 1
SAMPLE PUMP
DRAIN PUMP
PURGE VALVE
CALIBRATION VALVE
AXX
EXTERNAL SWITCH -
INITIATE CALIBRATION
TROUBLE
AXX
PHOTODIODE
DETECTOR
SAMPLE PRESSURE
SENSOR
OZONE PRESSURE
SENSOR
A9
MOISTURE DETECTOR
BAROMETRIC
PRESSURE
AXX
AXX
A14
A16
A7
J10
OZONATOR
A13
CONVERTER
ASSEMBLY
J4
J38
J38
J1
J28
J2
J3
A18
P3
PDD
A2
5
A8
NDIR
DETECTOR
CO
A8
NDIR
A25
J1
J2
P1
J5
J1
CALIBRATION VALVE
ASSEMBLY
A12
PMD
A24
J3
DS2 (GRN)
J28
J4
J2
J18
J3
P2
TROUBLE
HEARTBEAT
DS1 (RED)
RS232
DIGITAL
ANALOG
J3
J2
ANTENN
A
RS232
LAN
RS485
J8
J4
J6
J7
J5
MODEM
A5
J9
CPU
A4
CN16C
CN15
CN16B
J3
J4
ADIO
A3
J3
J2
EXIO
A22
DIAGNOSTIC OUTPUT
VOLTAGE
AXX
4-20 mA
CURRENT LOOPS
AXX
BACKPLANE
A2
PC-104
PRIMARY
POWER
SUPPLY A1
AC IN J1
CIRCUIT
BREAKER
6A
CB1
24VDC
POWER
CN8
J17 POCKET PC
CN16A
+5V
J11
A21
INTERNAL PANEL
CONNECTIONS
AND FUNCTIONS
A20
EXTERNAL
CONNECTIONS
P4
J2
J18
J38
AUX
A23 J28
J48
O2
CO
NOx
O2
CO
NOx
O2
CO
NOx
A17
AXX
AXX
ZONE HEATER
(PELTIER)
A17
EXTERNAL PROCESS
FROM CUSTOMER
PUMP CONTROL
SYSTEM HEARTBEAT
INDICATOR
A10
VALVES
MANIFOLD
ASSEMBLY
A11
LOW RANGE
READING
OVER LIMIT
INDICATOR
PLC
AXX
P5
DIGITAL
I/O
ANALOG
I
/O
Instruction Manual
748467-A
January 2002
2-8 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
a. AC Power
Connect AC power through a 10A circuit
breaker that is to be located close to the
MicroCEM. The circuit breaker will pro-
vide over current protection as well as a
means of disconnecting the power.
Maximum power requirements will be 380
watts, with most applications requiring
less than this amount.
b. Circular Connector Assembly Instruc-
tions
Wire Stripping
Strip insulation from end of wire to be
crimped. Do not cut or damage wire
strands. Refer to table for proper strip-
ping dimensions.
Wire Size Dim. A
22O or 22M* .125 (3.18)
20 .188 (4.77)
16 .188 (4.77)
12 .188 (4.77)
*Inactive. Not recommended for new
design, replacement only.
Contact Crimping
1. Insert stripped wire into contact crimp
pot. Wire must be visible through in-
spection hole.
2. Using correct crimp tool and locator,
cycle the tool once to be sure the in-
dentors are open. Insert contact and
wire into locator. Squeeze tool han-
dles firmly and completely to insure
a proper crimp. The tool will not re-
lease unless the crimp indentors in
the tool head have been fully actu-
ated.
3. Release crimped contact and wire
from tool. Be certain the wire is visi-
ble through inspection hole in contact.
A
Visual Inspection Hole
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-9
Model MicroCEM
Contact Insertion
1. Remove hardware from plug or re-
ceptacle and slip over wire bundle in
proper order for reassembly.
2. Using proper plastic or metal insertion
tool for corresponding contact, posi-
tion wire in tip of the tool so that the
tool tip butts up against the contact
shoulder.
3. Press tool against contact shoulder
and, with firm and even pressure, in-
sert wired contact and tool tip into
center contact cavity. A slight click
may be heard as metal retaining tines
snap into place behind contact shoul-
der.
4. Remove tool and pull back lightly on
wire to make sure contact is properly
seated. Repeat operation with re-
mainder of contacts to be inserted,
beginning with the center cavity and
working outward in alternating rows.
5. After all contacts are inserted, fill any
empty cavities with wire sealing plugs.
Reassemble plug or receptacle hard-
ware.
Instruction Manual
748467-A
January 2002
2-10 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Contact Extraction
1. Remove hardware from plug or re-
ceptacle and slide hardware back
along wire bundle.
2. Using plastic or metal extraction tool
with proper color code corresponding
to contact size, place wire in tool.
3. Insert tool into contact cavity until tool
tip bottoms against the contact shoul-
der, expanding clip retaining tines.
4. Hold wire firmly in tool and extract
wired contact and tool. Repeat op-
eration for all contacts to be ex-
tracted.
5. Fill any empty wire cavities with wire
sealing plugs.
6. Reassembly plug or receptacle.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-11
Model MicroCEM
c. Interface Connections
Connection Designator Shell
Size
No.
Contacts AWG Table
AC Power J1 12 316 Table 2-2
Analog Interface J2 12 22 26, 24, 22 Table 2-3
Digital Interface J3 14 37 26, 24, 22 Table 2-4
RS232 J4 10 13 28, 26, 24 Table 2-5
LAN Interface J5 8 6 28, 26, 24, 22 Table 2-7
RS485 J6 8 3 24, 22, 20 Table 2-6
Phone Line (Modem) J7 8 3 24, 22, 20 Table 2-8
Antenna (Peltier Power) J8 16 314, 12 Table 2-9
Table 2-1. Interface Connections
SIGNAL NAME DEFINITION PIN
L1 A
L2 85-264 VAC, 47-440 Hz C
GND AC Ground B
Table 2-2. AC Power Connection Terminal Assignments
SIGNAL NAME DEFINITION PIN
O2CL+ 1
O2CL- O2 Reading, 4-20 mA Output 2
COCL+ 3
COCL- CO Reading, 4-20 mA Output 4
NOX+ 5
NOX-NOX Reading, 4-20 mA Output 6
EXP1CL+ 7
EXP1CL- External process No. 1, Current Loop input, 4-20 mA 8
EXP2CL+ 9
EXP2CL- External process No. 2, Current Loop input, 4-20 mA 10
BAROP+ 11
BAROP- Barometric pressure Compensator 0-10V input 12
Table 2-3. Analog Output Terminal Assignments
Instruction Manual
748467-A
January 2002
2-12 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
SIGNAL NAME DEFINITION PIN
SPUMPNO 1
SPUMPC 2
SPUMPNC
Sample Pump Control, Dry contact, 110V 1A Rating
3
DPUMPNO 4
DPUMPC 5
DPUMPNC
Drain Pump Control, Dry contact, 110V 1A Rating
6
PURGNO 7
PURGC 8
PURGNC
Purge Valve Control, Dry contact, 110V 1A Rating
9
CALNO 10
CALC 11
CALNC
Calibration Valve Control, Dry contact, 110V 1A Rating
12
TRBLNO 13
TRBLC 14
TRBLNC
Trouble Indicator, Dry contact, 110V 1A Rating
15
O2LR+ 16
O2LR- O2 Low Reading Digital output (0=LR) 17
COLR+ 18
COLR- CO Low Reading Digital output (0=LR) 19
NOxLR+ 20
NOxLR- NOx Low Reading Digital output (0=LR) 21
EXTDIG1+ 22
EXTDIG1- Digital Input from External process 23
INCAL+ 24
INCAL- Initiate Calibration Switch Input 25
O2OL+ 26
O2OL- O2 Over Limit Indicator 27
COOL+ 28
COOL- CO Over Limit Indicator 29
NOxOL+ 30
NOxOL- NOx Over Limit Indicator 31
Not Used 32-37
Table 2-4. Digital Output Terminal Assignments
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-13
Model MicroCEM
SIGNAL NAME DEFINITION PIN
DCD (pin 1) Data Carrier Detect Input 1
DSR (pin 6) Data Set Ready Input 2
RxD (pin 2) Receive Data Input 3
RTS (pin 7) Request to Send Output 4
TxD (pin 3) Transmit Data Output 5
CTS (pin 8) Clear To Send Input 6
DTR (pin 4) Data Terminal Ready Output 7
RI (pin 9) Ring Indicator Input 8
GND (pin 5) Signal Ground 9
Not Used 10-13
Table 2-5. RS-232 Interface Terminal Assignments
SIGNAL NAME DEFINITION PIN
TxD/RxD+ (pin 2) A
TxD/RxD- (pin 7) Bi-directional Data B
GND (pin 3) Ground C
Table 2-6. RS-485 Terminal Assignments
SIGNAL NAME DEFINITION PIN
TxD+ (pin 1) 1
TxD- (pin 2) Transmit Data 2
RxD+ (pin 3) 3
RxD- (Pin 6) Receive Data 4
Not Used 5-6
Table 2-7. LAN Interface Terminal Assignments
SIGNAL NAME DEFINITION PIN
TIP (pin T) A
RING (pin R) Modem Interface to Phone Line B
Not Used C
Table 2-8. Phone Line (Modem) Terminal Assignments
SIGNAL NAME DEFINITION PIN
Vbb +24VDC A
Vbb_rtn +24V Return B
Gnd GND C
Table 2-9. Antenna (Peltier Power) Connection Terminal Assignments
Instruction Manual
748467-A
January 2002
2-14 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
2-5 ANALYTICAL LEAK CHECK
If explosive or hazardous gas samples are
being measured with the MicroCEM, it is rec-
ommended that gas line fittings and compo-
nents be thoroughly leak-checked prior to
initial application of electrical power, bimonthly
intervals thereafter, and after any mainte-
nance which involves breaking the integrity of
the sample containment system.
a. Flow Indicator Method
Supply air or inert gas such as nitrogen,
at 10 psig (689 hPa), to the analyzer
through a flow indicator with a range of 0
to 250 cc/min. Install a shut-off valve at
the sample gas outlet. Set the flow rate to
125 cc/min.
Close the outlet shut-off valve and notice
that the flow reading drops to zero. If the
flow reading does not drop to zero, the
system is leaking and must be corrected
before the introduction of any flammable
sample gas or application of power.
Figure 2-7. Leak Test Flow Method
Flow Meter
N2
10 psig
(69 kPa)
Gas Outlet
MicroCEM Analyzer
Inlet Outlet
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-15
Model MicroCEM
b. Manometer Method
Install a water-filled U-tube manometer at
the sample gas outlet. Install a shut-off
valve at the sample gas inlet. Admit air or
inert gas to the inlet shut-off valve until
the analyzer is pressurized to approxi-
mately 50 hPa. The water column will be
about 500 mm.
Close the inlet shut-off valve and, follow-
ing a brief period for pressure equilibrium,
verify that the height of the water column
does not drop over a period of about 5
minutes. If the water column height drops,
the system is leaking and must be cor-
rected before the introduction of any
flammable sample gas or application of
power.
Figure 2-8. Leak Test Manometer Method
Water
N2
Overpressure
Approx. 50 hPa
MicroCEM Analyzer
Inlet Outlet
Instruction Manual
748467-A
January 2002
2-16 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-1
Model MicroCEM
SECTION 3
OPERATION
CAUTION.
Do not operate or service this instru-
ment before reading and understanding
this instruction manual and receiving
appropriate training.
Refer to installation drawing supplied
with the application data package.
3-1 STARTUP PROCEDURE
Once the MicroCEM has been correctly as-
sembled and installed in accordance with
the instructions in Section 2, the analyzer is
ready for operation.
Before operating the system, verify that the
leak checks have been performed and that
the sample handling unit is performing cor-
rectly.
Apply power to the system and verify that
sample gas is flowing.
NOTE
A warm-up time of from 15 to 50 minutes
is required depending on the installed
detector(s).
Analyzer operation can be confirmed on the
screen of the pocket PC through the glass
window on the door. Upon power up, the
analyzer will perform a self-test routine.
This test will last approximately 60 sec-
onds.
3-2 POCKET PC USER INTERFACE
The MicroCEM User Interface runs on a
Pocket-PC with Windows CE operating
system. It communicates with the Micro-
CEM via serial communication port. All in-
put to the Pocket-PC is done using a
pointing device that comes with the Pocket-
PC.
a. Connecting Pocket PC to MicroCEM
1. Open MicroCEM door. Refer to
Figure 3-2.
2. Plug RS232 plug into adapter lo-
cated on front panel.
3. Plug power supply cable into 5V
adapter
4. Turn Pocket PC on
5. In order to assure no other win-
dows are open press the reset
button. Reset button is located on
the back of the pocket PC.
6. Using the MicroCEM menu click on
“programs”
7. Click on “Connection” icon
8. Click on “uCEM” icon.
9. Go to tools menu and click on Mi-
croCEM .
10. Unit will display data in 3 to 5 sec-
onds.
Figure 3-1. Pocket PC
Instruction Manual
748467-A
January 2002
3-2 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Figure 3-2. MicroCEM Front Panel
RS232
Connector
5V
Connector
Mouse
Connector
VGA
Connector
Keyboard
Connector
USB
Connector
Reset
Button
Printer
Connector
Floppy
Connector IDE
Connector
Heartbeat
LED
Trouble
LED
Power Switch
Flowmeter
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-3
Model MicroCEM
b. Main Display
The MicroCEM Main Display (Figure
3-3) provides the status of the three
emissions channels. The status in-
cludes the current reading (updated
approximately every 2 seconds), the
last 1-minute average, and the last 15-
minute average. The status column
(Sts) indicates the status of the meas-
urement and can be any of the values
in listed in Table 3-1. (“Status” shown in
order of precedence. Maintenance
mode status takes highest prece-
dence.)
Figure 3-3. MicroCEM Pocket PC Display (Main Display Shown)
STATUS DESCRIPTION
MIndicates that maintenance mode is active.
CCalibration in process
IInvalid Reading. Indicates that the reading is invalid due to calibration failure or sensor failure.
VValid Reading
PCustomer Process Off Line (Dry contact by customer)
OMicroCEM System Off
Table 3-1. Status Values
Tools Menu
Provides access to all
functionality.
Note: Exit is only be available
when current user has
administrative access.
Drag the edge of the
column to resize.
Use the scrollbar to
see full set of data.
Toolbar Buttons
About
Data Logs
MicroCEM Admin
MicroCEM Settings
Alarms
S. = Status
See Table 3-1.
Instruction Manual
748467-A
January 2002
3-4 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
c. MicroCEM Menu
Clicking on the Tools text in the lower
left corner of the display activates the
MicroCEM menu. From this menu, all
of the MicroCEM user-interface func-
tions can be accessed.
Figure 3-4. MicroCEM Menu
d. MicroCEM Alarms
The MicroCEM Alarms dialog shows all
the current alarms. A current alarm is
one with an Active status of 1 (active)
or an Acknowledged state of 0 (not ac-
knowledged).. If the Show Historical
Alarms checkbox is checked, all non-
current alarms are also shown (non-
active acknowledged alarms). Up to
100 alarms will be shown. To see more
than the last 100 alarms, the web
based MicroCEM interface must be
used. If one or more alarms are cur-
rent, the most recent of them will be
displayed on the main display. If more
than one alarm is current “(more)” will
be displayed after the name of the most
recent alarm on the main window to in-
dicate that more than one alarm is ac-
tive. Horizontal scroll bar is be used to
see Date and Time of the Alarms.
Figure 3-5. Pocket PC Alarms Screen
Alarms with a critical level will cause
the System trouble output to become
active when the alarm is active. When
all active critical alarms are acknowl-
edged, the System trouble output will
become inactive.
On-screen keyboard is available
at any time by clicking on the
keyboard button.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-5
Model MicroCEM
ALARM NAME LEVEL DESCRIPTION
O2 Calibration Failed Critical O2 Calibration Failed to meet the maximum Drift requirements
CO Calibration Failed Critical CO Calibration Failed to meet the maximum Drift requirements
NOx Calibration Failed Critical NOx Calibration Failed to meet the maximum Drift require-
ments
O2 High Limit Critical O2 Sensor reading is above the minimal acceptable limit
O2 Low Limit Critical O2 Sensor reading is below the minimal acceptable limit
CO High Limit Critical CO Sensor reading is above the minimal acceptable limit
CO Low Limit Critical CO Sensor reading is below the minimal acceptable limit
NOx High Limit Critical NOx Sensor reading is above the minimal acceptable limit
NOx Low Limit Critical NOx Sensor reading is below the minimal acceptable limit
24V Over Max Critical 24V diagnostic input exceeds the specified maximum
24 Low Min Critical 24V diagnostic input is below the specified minimum
O2 Emission Limit Warning O2 reading is over the specified Limit
CO Emission Limit Warning CO reading is over the specified Limit
NOx Emission Limit Warning NOx reading is over the specified Limit
Converter Over Temp Critical Converter temperature reading exceeds the specified maxi-
mum
Converter Low Temp Critical Converter temperature reading is below the specified minimum
Zone Over Temp Critical Zone temperature reading exceeds the specified maximum
Zone Low Temp Critical Zone temperature reading is below the specified minimum
PDT Over Temp Critical Peltier Cooler (PDT) temperature reading exceeds the speci-
fied maximum
PDT Low Temp Critical Peltier Cooler (PDT) temperature reading is below the specified
minimum
PMT Over Temp Critical PDD Chamber temperature reading exceeds the specified
maximum
PMT Low Temp Critical PDD Chamber temperature reading is below the specified
minimum
Warm-up Time Limit Critical System Warm-up process exceeded the specified time limit
Table 3-2. Alarm Summary
Instruction Manual
748467-A
January 2002
3-6 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
e. MicroCEM Login
The login dialog appears (Figure 3-6)
when first requesting the MicroCEM
Settings or MicroCEM Admin. If a valid
user name and password are entered,
the user logging in will have permission
to use the MicroCEM Settings and/or
the MicroCEM Administration (Refer to
the User Settings page of the Micro-
CEM Settings dialog). After logging in
the first time, it is not required again
until the user logs out, or is logged out
automatically because of a period of in-
activity (Refer to the Auto Logout page
of the MicroCEM Administration dialog).
Figure 3-6. MicroCEM Login
f. MicroCEM Login-Current User Indi-
cation
When a user is logged in, the Micro-
CEM main display will indicate the user
name of the logged in user as shown in
Figure 3-7. When the user logs off, the
current user and the Logoff button will
not be shown.
Figure 3-7. Current User Indication
Current User
Logoff Button
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-7
Model MicroCEM
3-3 MicroCEM SETTINGS
The MicroCEM Settings dialog is only
available to users with MicroCEM Settings
permission. If a user is not currently logged
in, the login dialog will be displayed. If the
current user doesn’t have MicroCEM Set-
tings permission, a message will be dis-
played which reads “Permission denied”.
When the MicroCEM Settings are invoked
from the Tools menu or the MicroCEM Set-
tings button, the MicroCEM Settings tabbed
dialog is displayed. The Range page (tab)
is displayed initially.
a. Range
The Range Settings page is used to set
the range of the Emissions analog out-
puts. The outputs support dual range
mode. When the emission is below the
Range 1 value, the output switches to
Range 1 mode and the Range 1 value
becomes the full-scale value of the out-
put. The range indication digital output
will change to the Range 1 state.
When the emission is above the Range
1 value, the output switches to Range 2
mode and the Range 2 value becomes
the full-scale value of the output. The
range indication digital output will
change to the Range 2 state. The
Range 2 settings cannot be changed
and are factory-set.
NOTE
If only one range is needed, set the
Range 1 values to the range 2 value.
This will disable the dual range fea-
ture.
Figure 3-8. Range Settings
Tabs allow selection of the
MicroCEM Settings pages
Instruction Manual
748467-A
January 2002
3-8 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
b. Auto Calibration
The Auto-Calibration settings are set on
the Auto-Calibration page of the Micro-
CEM settings. If auto calibration is
turned to the on position, then the user
can select time and/or frequency of the
auto calibration in the Auto Calibration
Frequency tab (Section 3-3c).
Figure 3-9. Auto Calibration Settings
c. Auto Calibration Time and Fre-
quency
The Auto-Calibration Time and Fre-
quency tab allows specifying time and
frequency of the auto-calibration. Time
field requires military time format.
Figure 3-10. Auto Calibration Time and
Frequency
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-9
Model MicroCEM
d. Manual Calibration
A dry-run Calibration may be initiated
from the Manual Calibration page of the
MicroCEM Settings. The results of the
calibration will not be applied and only
provide a dry run of the calibration. If
desired a partial calibration may be in-
voked for one or more of the emission
types. While the manual calibration is
in process, a calibration progress dialog
will be displayed as shown in Figure
3-26. When the manual calibration is
completed, the results are displayed in
the Manual Calibration Results dialog
as shown in Figure 3-12. If the Local
Calibration checkbox is checked, the
Local Calibration valve will be used
during the calibration rather than the
probe Calibration valve.
NOTE
“Start Autocalibration now” will in-
voke a real calibration and will apply
new correction factor results when
done.
Figure 3-11. Manual Calibration
Figure 3-12. Manual Calibration Results
Instruction Manual
748467-A
January 2002
3-10 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
e. Limits
The emission limits alarms can be set
on the Limits page of the MicroCEM
Settings. When a measured emission
exceeds its limit, the emission will have
a limit-exceeded status. This is indi-
cated on the main display and on the
Data-Logs display. It is also indicated
in the limit exceeded digital output.
Figure 3-13. Limit Settings
f. Calibration Gas
The Calibration Gas emissions quanti-
ties and Gas Bottle allocation may be
set on the Calibration Gas page of the
MicroCEM Settings. This should be set
whenever a Calibration Gas container
is replaced.
Place the span gas value of the par-
ticular gas cylinder in the span column.
I mid calibration gas can also be
hooked up the MicroCEM. Insert its
span gas value in the mid span boxes.
If a dual range is used use the Mid
Span column.
Figure 3-14. Calibration Gas Settings
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-11
Model MicroCEM
g. Maintenance Mode
Maintenance mode may be selected for
any of the emission types on the Main-
tenance Mode page of the MicroCEM
Settings.
Choosing maintenance mode will in-
voke an “M” flag” onto the data. Cus-
tomer can perform routine maintenance
while in this setting
Figure 3-15. Maintenance Mode Settings
Instruction Manual
748467-A
January 2002
3-12 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
3-4 MicroCEM FACTORY SETTINGS
A MicroCEM Factory Settings program is
available for use by MicroCEM technicians
to set parameters in the MicroCEM or a
qualified customer technician. Enter the
Factory Settings password at the login dia-
log to enter the Factory Settings. This
password will not be provided to the cus-
tomer. The list of settings is shown in Ta-
ble 3-3 and Table 3-4.
The user must purchase a PC/104 to
mouse and PC/104 to monitor in order to
access the factory settings. Consult
Rosemount for details.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-13
Model MicroCEM
Calibration Setting Description
O2ZeroDriftLimit O2 Allowed Zero Drift Limit.
COZeroDriftLimit CO Allowed Zero Drift Limit.
NOXZeroDriftLimit NOx Allowed Zero Drift Limit.
OSMidDriftLimit O2 Allowed Mid Drift Limit.
COMidDriftLimit CO Allowed Mid Drift Limit.
NOXMidDriftLimit NOx Allowed Mid Drift Limit.
O2SpanDriftLimit O2 Allowed Span Drift Limit.
COSpanDriftLimit CO Allowed Span Drift Limit.
NOXSpanDriftLimit NOx Allowed Span Drift Limit.
If the drift exceeds the allowed amount a drift alarm
will occur, and the readings on the channel will no
longer be valid until a successful calibration is com-
pleted.
O2Slope Default value for the O2 slope
O2Offset Default value for the O2 offset
COSlope Default value for the CO slope
COOffset Default value for the CO offset
NOXSlope Default value for the NOx slope
NOXOffset Default value for the NOx offset
Initial values for the emissions conversion slope and
offset used on a new system before the first Cali-
bration is performed. These values should be set
manually before the first auto-calibration is per-
formed.
O2SpanDef Default O2 Span Calibration Gas value
O2MidSpanDef Default O2 Mid Span Calibration Gas value
COSpanDef Default CO Span Calibration Gas value
COMidSpanDef Default CO Mid Span Calibration Gas value
NOXSpanDef Default NOx Span Calibration Gas value
NOXMidSpanDef Default NOx Mid Span Calibration Gas value
Gas1Allocation Default Gas 1 allocation
Gas2Allocation Default Gas 2 allocation
Gas3Allocation Default Gas 3 allocation
Default allocation for O2/NOx/CO. 1 = Zero, 2 = Mid
Span, 3 = Span. Example: 133 =
O2=Zero,NOx=Span,CO=Span
AutoCalFrequency Default Auto-Calibration frequency in hours and minutes (example: 24:00).
AutoCalTime Default Auto-Calibration time in hours and minutes (military time).
Purge1 Default auto-calibration Purge 1 value in seconds.
Gas1 Default auto-calibration gas 1 time in seconds.
Gas2 Default auto-calibration gas 2 time in seconds.
Gas3 Default auto-calibration gas 3 time in seconds.
Purge2 Default auto-calibration Purge 2 value in seconds.
Table 3-3. Factory Settings – Calibration
Instruction Manual
748467-A
January 2002
3-14 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
General Setting Description
O2SensorLowLimit This sets the O2 % low limit, below which a limit alarm will occur.
O2SensorHighLimit This sets the O2 % high limit, above which a limit alarm will occur.
COSensorLowLimit This sets the CO low limit, below which a limit alarm will occur.
COSensorHighLimit This sets the CO ppm high limit, above which a limit alarm will occur.
NOXSensorLowLimit This sets the NOx low limit, below which a limit alarm will occur.
NOXSensorHighLimit This sets the NOx ppm high limit, above which a limit alarm will occur.
CCEM Serial Number This setting is used to record the MicroCEM Serial Number.
Diluent Percent Percent O2 used in Diluent correction.
MinimumOnCurrent
This is the minimum current that must be measured by a current analog input for a
heater/cooler/fan to be considered on. This is used for heater/cooler/fan failure de-
tection.
MaximumOffCurrent
This is the maximum current that must be measured by a current analog input for a
heater/cooler/fan to be considered off. This is used for heater/cooler/fan failure de-
tection.
NDIR Sync Low This indicates which NDIR reading is made when the sync goes from high to low:
Reference (R) or Sample Gas (S).
+24V Low Limit If the +24V measurement is below this level it will cause an alarm.
+24V High Limit If the +24V measurement is above this level it will cause an alarm.
ValveOnTime For calibration – The amount of time to wait after turning on a valve.
O2EmissionLimit
NOXEmissionLimit
COEmissionLimit
O2LowRan
g
e
COLowRan
g
e
NOXLowRan
g
e
O2Hi
g
hRan
g
e
COHi
g
hRan
g
e
NOXHi
g
hRan
g
e
These limits are the default values. On the Pocket PC these values will be used
when one of the “Defaults” buttons are pressed.
SamplePumpOn 1 = Sample pump is used. 0 = Sample pump not used.
LogsDir Directory where log files are saved (C:\uCEM\Logs).
MaxWarmUpTime
Maximum time allowed for the uCEM to warm-up when it is started up. If all tem-
perature zones are not within allowed range within this period of time, the uCEM will
shutdown all heaters, coolers and processes.
StateFile The full path to the file which maintains the state of the uCEM.
(C:\uCEM\mcem.state)
ServerIP The IP address to use when listening for incoming connections.
ServerPort The IP Port to use when listening for incoming connections.
ServerTimeout 100
AlarmsPersistFile The full path to the file which maintains the current state of the alarms.
(C:\uCEM\alarms.state)
LogoffTimeout Auto Log-off time in minutes
UserListPersistFile The full path to the file that maintains the user list (C:\uCEM\mcem.userlist)
Table 3-4. Factory Settings - General
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-15
Model MicroCEM
a. PID Control Loop Factory Settings
These settings can be set for each of
the temperature control loops. The
temperature control loops include the
Zone heater/cooler, Converter Heater,
PMT Heater, and PMT Photo Diode
Cooler. Table 3-5 shows the section
names in the INI file used for each
temperature control loop.
Control Loop Section Name
Zone Heater/Cooler [PIDSettings ZoneLoop]
Converter Heater [PIDSettings ConverterLoop]
PMT Heater [PIDSettings PMTLoop]
PMT Photo Diode Cooler [PIDSettings PDTLoop]
Table 3-5. PID Settings – Section Names
Instruction Manual
748467-A
January 2002
3-16 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
PID Setting Description
PSetting
Proportional Gain. This parameter is set by using typical PID
tuning methods. The P setting is mandatory and is the first pa-
rameter to adjust. It provides a command directly proportional to
the error.
ISetting
Integral Gain. This parameter is set by using typical PID tuning
methods. The I setting is optional and is used to make small ad-
justments to correct a small error which persists for a period of
time.
DSetting
Derivative Gain. This parameter is set by using typical PID tuning
methods. The D setting is optional. It is used to adjust the com-
mand based on change in error. It can be used to reduce over-
shoot, which typically occurs when the P settings is used by itself.
This parameter tends to amplify any noise present in the input.
MaxSpeedSetting
Should be set to the typical warm-up/cool-down speed in
°C/second when the heater/cooler is operated at 100% power.
Increasing this value effectively decreases the Proportional, Inte-
gral and Derivative gain. Decreasing this value effectively in-
creases the Proportional, Integral and Derivative gain.
ResetIntegralError
Integral Reset Error. Setting used to reset Integral value when
error is larger than this value. This parameter is used to prevent
the integral value from building up while the error is large and
then causing overshoot when the setpoint is reached.
IntegralMaxPercent Maximum percent output power that can be accumulated by the
Integral component. (0-100) The default is 10 percent.
IntegralMinPercent Minimum percent output power that can be accumulated by the
Integral component. (0-100) The default is 10 percent.
MaxPercent Maximum zone output power in percent (0-100).
MinPercent Minimum zone output power in percent (0-100).
MinAlternationPercent Minimum
SetPoint This is the temperature setpoint, in degrees Celsius, for this tem-
perature control loop.
LowTempLimit If the temperature (°C) is below this value during the MicroCEM
process (not including the warm-up phase) an alarm will occur.
HighTempLimit If the temperature (°C) is above this value during the MicroCEM
process (not including the warm-up phase) an alarm will occur.
MaxOffCurrent
If the current reading is below the maximum-off current while the
heater is turned off, the heater has failed with a Heater Control
failure.
MinOnCurrent
If the current reading is below the minimum-on current while the
heater is turned on, the heater has failed with a Heater Burnout
status.
Table 3-6. PID Settings – Sections Descriptions
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-17
Model MicroCEM
3-5 MicroCEM ADMINISTRATION
The MicroCEM Administration dialog is only
available to users with MicroCEM Admini-
stration permission. If a user is not cur-
rently logged in, the login dialog will be
displayed. If the current user doesn’t have
MicroCEM Administration permission, a
message will be displayed which reads
“Permission denied”. When the MicroCEM
Administration is invoked from the Tools
menu or the MicroCEM Administration
button, the MicroCEM Administration
tabbed dialog is displayed. The User Set-
tings page (tab) is displayed initially.
a. User Settings
The user settings page of the Micro-
CEM Administration dialog allows users
to be added, deleted or modified. Each
user has a name, password, and per-
mission settings. The permission set-
tings include Settings permission that
allows access to the MicroCEM Set-
tings dialog, and Administrative permis-
sion that allows access to the
MicroCEM Administration dialog. The
Settings permission also allows a user
to access the MicroCEM remotely us-
ing the web-based interface.
Figure 3-16. User Settings
b. Auto Logoff
The number of minutes of inactivity af-
ter which a user is automatically logged
off is set on the Auto Logoff page of the
MicroCEM Administration.
Figure 3-17. Auto Logoff
Instruction Manual
748467-A
January 2002
3-18 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
3-6 MicroCEM DATA LOGS
The MicroCEM maintains a minimum of 3
months of history in three types of data log
files. The first type of log file is the meas-
urement log, which contains emission
measurements (at 1 minute intervals),
alarm indications and maintenance mode
indications. The second type of log file is
the calibration log file, which contains in-
formation on each auto calibration done.
The third is the alarm log file, which records
any improperly functioning hardware. The
data will be stored in flat, ASCII, CSV
(comma-delineated) file. This file format
can be read directly by MS Excel and im-
ported into many types of software applica-
tions. The following parameters is factory
set for each of the log file types.
a. Maximum Log File Size
This is how large a log file can get (in
bytes) before it is closed and a new log
file is opened.
Emissions Log: 1 MB
Calib Log: 4000 bytes
Alarm Log: 4000 bytes
b. Maximum Number of Log Files
This is how many log files can be cre-
ated. When the maximum number of
log files is reached, the oldest file is
overwritten when new ones are cre-
ated.
Emissions Log: 6
Calib Log: 6
Alarm Log: 6
c. Log File Name Format
The log file name uses the date that the
file was created. It is of the format
TYYYYMMDD.CSV where T is the log
file type (E=Emissions, C=Calibration
and A=Alarm), YYYY is the Year, MM
is the month, and DD is the day of the
month. For example, the file name
E20010329.csv contains emissions
data and was created on March 29,
2001.
d. Measurement Log File Format
The log file contains data in a flat, AS-
CII, CSV file. The following are the
fields of the file, in order of occurrence.
The log file size will be about 42 bytes
per entry. 3 months of data logs will
require about 5,443,200 bytes
Name Description Example
Date/Time Month-day-year Hours:Minutes:Seconds 3-7-2001 10:24:57
O2 Percent O2 (percent) 10.5
CO CO parts per million 12
NOx NOx parts per million 15
CO Limit CO Limit exceeded alarm, 0=inactive, 1=active 0
NOx Limit NOx Limit exceeded alarm, 0=inactive, 1=active 0
O2 Status V=Valid, M=Maintenance Mode, C=Calibration in process,
I=Invalid (calibration failed or sensor in failed state)
V
CO Status V=Valid, M=Maintenance Mode, C=Calibration in process,
I=Invalid (calibration failed or sensor in failed state)
V
NOx Status V=Valid, M=Maintenance Mode, C=Calibration in process,
I=Invalid (calibration failed or sensor in failed state)
V
Table 3-7. Measurement Log File Format
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-19
Model MicroCEM
e. Calibration Log File Format
The log file contains data in a flat, AS-
CII, CSV file. The following are the
fields of the file, in order of occurrence.
The log file size will be about 178 bytes
per entry. 3 months of data logs will
require about 16000 bytes (based on
Calibration performed every 24 hours).
Name Description Example
Date/Time Month-day-year Hours:Minutes:Seconds 3-7-2001 10:24:57
Zero Time Time that Zero span started, Hours:Minutes:Seconds 10:25:30
Mid Time Time That Mid span started, Hours:Minutes:Seconds 10:27:30
Span Time Time that span started, Hours:Minutes:Seconds 10:28:30
Purge Time Time that the final purge started,
Hours:Minutes:Seconds
10:30:30
Finish Time Time that the final purge finishes 10:31:00
O2 Measured Zero Measured percent O2 for Zero phase of calibration 0.0
O2 Expected Zero Expected percent O2 for Zero phase of calibration 0.0
O2 Zero Drift Percent drift of O2 zero calibration 0.0
O2 Measured Mid Span Measured percent O2 for Mid span phase of calibration 10.1
O2 Expected Mid Span Expected percent O2 for Mid span phase of calibration 10.0
O2 Mid Drift Percent drift of O2 mid calibration. -0.4
O2 Measured Span Measured percent O2 for Span phase of calibration 20.2
O2 Expected Span Expected percent O2 for Span phase of calibration 20.3
O2 Span Drift Percent drift of O2 span calibration 0.4
CO Measured Zero 1
CO Expected Zero 0
CO Zero Drift 0.3
CO Measured Mid Span 23
CO Expected Mid Span 24
CO Mid Span Drift -0.3
CO Measured Span 45
CO Expected Span 45
CO Span Drift 0
NOx Measured Zero Measured ppm NOx for zero phase of calibration 15
NOx Expected Zero Expected ppm NOx for zero phase of calibration 15
NOx Zero Drift 0
NOx Measured Mid Span Measured ppm NOx for mid span phase of calibration 30
NOx Expected Mid Span Measured ppm NOx for mid span phase of calibration 30
NOx Mid Span Drift 0
NOx Measured span Measured ppm NOx for span phase of calibration 59
NOx Expected span Measured ppm NOx for span phase of calibration 59
NOx Span Drift 0
Table 3-8. Calibration Log File Format
Instruction Manual
748467-A
January 2002
3-20 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
f. Alarm Log File Format
The log file contains data in a flat, AS-
CII, CSV file. The following are the
fields of the file, in order of occurrence.
The days or months maintained in the
Alarm Log depends on how often trou-
ble conditions are recorded. If there
are rarely alarm conditions recorded,
there is enough space for many years
of alarm logs to be recorded.
Name Description Example
Date/Time Month-day-year Hours:Minutes:Seconds 3-7-2001 10:24:57
Fault Level 1=informational, 2=warning, 3=critical 3
Fault Type 0 = O2 Calibration Failed
1 = CO Calibration Failed **
2 = NOx Calibration Failed
3 = O2 High Limit
4 = O2 Low Limit
5 = CO High Limit **
6 = CO Low Limit **
7 = NOx High Limit
8 = NOx Low Limit
9 = O2 Emission Limit
10 = CO Emission Limit **
11 = NOx Emission Limit
12 = 5 Volt Fault **
13 = 6 Volt Fault **
14 = 24V Over Max
15 = 24 Low Min
16 = Converter Over Temp
17 = Converter Low Temp
18 = Converter On Failed **
19 = Converter Off Failed **
20 = Zone Over Temp
21 = Zone Low Temp
22 = Zone Heater On Failed **
23 = Zone Heater Off Failed **
24 = Zone Cooler On Failed **
25 = Zone Cooler Off Failed **
26 = Heater Fan On Failed **
27 = Heater Fan Off Failed **
28 = Cooler Fan On Failed **
29 = Cooler Fan Off Failed **
30 = PDT Over Temp
31 = PDT Low Temp
32 = PDT On Failed **
33 = PDT Off Failed **
34 = PMT Over Temp
35 = PMT Low Temp
36 = PMT On Failed **
37 = PMT Off Failed **
38 = O2 Over Temp **
39 = O2 Low Temp **
40 = O2 On Failed **
41 = O2 Off Failed **
42 = Warmup Time Limit
70 = IO Board Failed
2
Fault Description ASCII string describing fault. Up to 200 characters. CO Calibration Failed
** - Alarm is not implemented in this version of software or reserved for future use.
Table 3-9. Alarm Log File Format
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-21
Model MicroCEM
3-7 VIEW DATA LOGS
View Data Logs will start Internet Explorer
and display the Emissions page of the Mi-
croCEM web pages (see Figure 3-18 and
Figure 3-19). This page can be used to
view the Emissions log. Other pages may
be selected to view the calibration log and
the alarm log.
Figure 3-18. View Data Logs
Average Period Time Range Displayed
1 Minute 1 Hour
15 Minutes 1 Day
1 Hour 3 Days
12 Hours 1 Month
24 Hours 3 Months
Table 3-10. Average Period Selection
Select 1 min., 15 min., 1 hour
or 24 hour averages.
Select the ending hour to view
(applicable only to 1- minute
averages)
If Most Recent is selected, the
month day and hour do not
need to be selected.
Note the page header was scrolled out of view to show all the selection
options, but it can be seen in Figure 3-19.
Instruction Manual
748467-A
January 2002
3-22 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
NOTE
The Real-time, Config and Download are included in the navigation menu but these pages are
intended for remote desktop use. As an enhancement these items could be hidden if the pages
are browsed from a Windows CE version of Internet Explorer.
Figure 3-19. View Data Logs Table
Alarms and Calibration data
may also be viewed.
The Emission Data-Logs
data is shown here.
A Date is shown for 1 min or 15
minute averages. A date range
is shown for 1 hour or greater
averages.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-23
Model MicroCEM
3-8 VIEWING MicroCEM DATA WITH A WEB
BROWSER
The log files may be accessed using a web
browser that has access to the MicroCEM
over a Wireless LAN, serial port connection
(PPP) or Dialup Connection (RAS). The
MicroCEM has Window CE Web Server in-
stalled and provides a Web-based interface
to select and download the Data-Log files.
The downloaded Data-Log files will be in a
CSV (comma delineated ASCII) format.
The log files may also be viewed as a web
page in a tabular format.
a. Real-Time Page
The Real-Time page provides a real-
time display of the emission values and
emission statuses. The display is re-
freshed every 10 seconds.
Figure 3-20. Real-Time Web Page
Instruction Manual
748467-A
January 2002
3-24 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
b. Emissions Page
The Emissions Page can be used to
view emission history in a tabular web-
page format. This page is used as part
of the MicroCEM User interface as well
as by a remote user (probably from a
desktop computer).
The Emission Data-Logs table is dis-
played (as shown in Figure 3-19) after
selecting the Date and Average Period
and pressing the Display button. If de-
sired a bookmark or shortcut may be
made to the page displaying the table.
In the future, the same table can be
displayed by selecting this bookmark.
If Most Recent Data was selected, the
book-marked page will always display
Most Recent Data. If a specific date
was specified, the book-marked page
will always display the same date.
Figure 3-21. Emissions Selection
Figure 3-22. Emissions Table
Select 1 min., 15 min., 1 hour
or 24 hour averages.
Select the ending hour to
view (applicable only to 1
minute averages)
If Most Recent is selected, the
month day and hour do not
need to be selected.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-25
Model MicroCEM
Figure 3-23. Calibration Table
Instruction Manual
748467-A
January 2002
3-26 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
c. Download Page
The download page of the MicroCEM
allows the selection and download of
the three types of Data-Logs. To
quickly download recent data, a
“Download Most Recent Emissions
Data” selection is provided. For more
control over the date range, a “Down-
load Emissions by Date Range” selec-
tion is available. Once the selection is
made, press the Download button to
start the HTTP download. The Micro-
CEM will create a temporary file that
contains the selected data. Due to
memory limitations there is a limit to the
number of files that can be downloaded
simultaneously. If this limit is ex-
ceeded, a message will be displayed
that reads “The simultaneous download
limit has been reached, please try
again later”.
Figure 3-24. Download Web Page
Choose from:
1 Minute / 8 Hours
1 Minute / 1 Day
1 Minute / 1 Week
15 Minutes / 1 Day
15 Minutes / 1 Week
15 Minutes / 1 Month
15 Minutes / 3 Months
1 Hour / 1 Week
1 Hour / 1 Month
1 Hour / 3 Months
Download Emissions
Log, Calibration Log or
Alarm Log
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-27
Model MicroCEM
3-9 VIEWING MicroCEM DATA WITH MS EX-
CEL
The MicroCEM Data may be view with MS Excel
using two different methods. The first method is
to open the data log files that have been down-
loaded onto a workstation. The files may then be
opened directly with Excel. The second method is
to create an Excel workbook, which links to the
MicroCEM web page. This is described in the
following paragraph.
An Excel spreadsheet may be linked to a Micro-
CEM web site, which periodically refreshes the
spreadsheet with data from the web site. To do
this, first make sure the MicroCEM web site is
available. The workstation needs access to the
MicroCEM web site via RAS (Dialup), LAN or the
Internet. Then in Excel, select Data menu, Get
External Data, New Web Query. The dialog
shown in Figure 3-25 will appear. Type in the ad-
dress for a MicroCEM web page that contains a
table with the desired data. Then press OK and
click on the cell where the data should appear.
The data will then appear in the spreadsheet. To
have the data updated periodically, right-click on
one of the cells that contains the linked data and
select Data Range Properties. Check the box the
reads “Refresh Every” and set the refresh period.
For additional information refer to MS Excel
documentation.
Figure 3-25. New Web Query
Instruction Manual
748467-A
January 2002
3-28 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
3-10 AUTO CALIBRATION
The Auto Calibration dialog is displayed
whenever calibration is in process. It dis-
plays the current emission values and the
status of the calibration. The calibration
may be canceled before it completes by
pressing the Cancel button.
Note: The title of this dialog will read either “Auto Calibration” or “Manual Calibration” to indicate how the cali-
bration process was initiated.
Figure 3-26. Auto Calibration
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Software 4-1
Model MicroCEM
SECTION 4
SOFTWARE
4-1 OVERVIEW
The MicroCEM Software includes 3 main
components. One component is the Micro-
CEM control software that interfaces with the
instrumentation and records the emissions
measurements. A second component is the
User Interface Software that provides real-
time status and configuration dialogs. A third
component is the web server software that
uses VB Script or Java Script to provide a
web-based interface to the MicroCEM.
4-2 MicroCEM USER INTERFACE SOFTWARE
Hardware Platform: Pocket PC
The MicroCEM User Interface Software com-
municates with the MicroCEM Control Soft-
ware using TCP/IP. It may run locally on the
MicroCEM computer or remotely on a Pocket
PC with a RS232 connection to the MicroCEM
computer. It will not normally run locally since
there is no input device or display connected
to the MicroCEM processor.
4-3 MicroCEM WEB SERVER SOFTWARE
Web Browser: Internet Explorer 4.0 or Net-
scape 4.0
The Web Server Software provides the web
based interface described in this document. It
is implemented as a VB Script or Java Script.
The script will obtain much of the needed in-
formation directly from the Data-Log files or
configuration file. The real-time information
will be obtained from a memory segment
shared with the MicroCEM control software.
The web server support multiple simultaneous
clients. The maximum number of allowed
connections could be limited to a reasonable
number through the Windows CE Web Server
configuration dialogs.
uCEM
Control
Software
Device Drivers
Digital and
Analog IO
Web
Server
Script
Shared
Memory
Segment
Data-Log
& Config
Files
HTML (TCP/
IP)
uCEM User
Interface
Pocket PC
Serial
Cable
TCP/IP
Workstation
HTML
Ethernet,
Modem or serial
uCEM Computer
Sensors and
Control Circuitry
As an option a
Wireless Network
may be used.
Figure 4-1. MicroCEM Software Block Diagram
Instruction Manual
748467-A
January 2002
4-2 Software Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
4-4 SOFTWARE DEVELOPMENT MANAGEMENT
Microsoft Visual SourceSafe is used for ver-
sion control of all of the MicroCEM software.
Compuware’s Track Record is used for
change request management and defect
tracking.
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 5-1
Model MicroCEM
SECTION 5
MAINTENANCE AND SERVICE
DANGER.
ELECTRICAL SHOCK HAZARD
Disconnect power to the module(s) prior to
replacing components.
WARNING
QUALIFIED PERSONNEL
This equipment should not be adjusted or
repaired by anyone except properly quali-
fied service personnel.
WARNING
PARTS INTEGRITY
Tampering with or unauthorized substitu-
tion of components may adversely affect
safety of this product. Use only factory-
approved components for repair.
5-1 OVERVIEW
The MicroCEM Analyzer Module requires very
little maintenance during normal operation.
Occasionally, the detector's reaction chamber
and sapphire window may require cleaning,
refer to Section 5-5.
White crystal deposits on the windows of the
reaction chamber and plugging of capillaries
and vent are usually due to sample contami-
nates such as ammonia reacting with the high
ozone levels and NO components. To elimi-
nate the contaminates, the sampling system
should be reworked or a preventive mainte-
nance program developed (if dropout is not
excessive). Another source of crystalline for-
mation is contaminated air.
Several components may require replace-
ment. These are discussed in the following
sections.
Instruction Manual
748467-A
January 2002
5-2 Maintenance and Service Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Figure 5-1. MicroCEM Component Location
Ozone Generator
NDIR Detector
Converter
(Figure 5-2)
Valve Manifold
Assembly
Paramagnetic
Detector
3-Way Valve
Transistor
Personality Modules
(Figure 5-3)
Power Relay
Fan
Power Supply Assembly
Thermoelectric Cooler
Regulator
Chemiluminescense
Detector (Figure 5-4)
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 5-3
Model MicroCEM
5-2 CONVERTER
To replace the converter or sensor, discon-
nect the two pneumatic tubes and two electri-
cal connections. Unlace the heater blanket,
and remove the converter. Reassemble in re-
verse order, ensuring that the converter is ori-
ented with the glass cloth at the bottom and
the sensor is oriented correctly inside the
heater jacket.
Figure 5-2. Converter Assembly
ASSEMBLED SIDE VIEW
Converter
Tube 655227
Wrap with
aluminum foil
Glass
Cloth
Sensor
Heater
Jacket
655228
Sensor
655282
Instruction Manual
748467-A
January 2002
5-4 Maintenance and Service Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
5-3 OZONE GENERATOR
To replace the ozonator, remove the two large
straps and all tie-wraps, and disconnect the
one electrical connection. Reassemble in re-
verse order.
5-4 PERSONALITY MODULES
There are five different personality modules.
Depending on your unit, you may have three,
four or five modules installed. These person-
ality modules are installed on a custom back-
plane. See Figure 5-3.
To remove any on the personality modules.
Remove cables form module to be removed,
there are two screws at the bottom of each
module. You will have to loosen each screw
before you can remove the personality mod-
ule.
Tag each cable and its location before dis-
connecting any wiring. This helps in re-
assembly.
Figure 5-3. Personality Modules and Backplane.
EXIO
AUX
PDD
NDIR
PMD
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 5-5
Model MicroCEM
5-5 CHEMILUMINESCENSE DETECTOR AS-
SEMBLY
Refer to Figure 5-4 and Figure 5-5.
a. Reaction Chamber
Removal
Disconnect the stainless steel tubing lines
at the Gyrolok fittings. Remove the (4)
nuts holding the Detector Assembly to
the chassis. Disconnect the plug from
connector J1 on the Signal Board and
remove the assembly from the chassis.
NOTE
Heatsink Compound. Care should be
taken to avoid getting heatsink com-
pound on optical surfaces. If this sub-
stance is removed during the
disassembly process, a zinc ox-
ide-filled, silicone grease (e.g., Dow
Corning 340 or EG&G Wakefield Engi-
neering's Series 120 Thermal Joint
Compound) be reapplied in the re-
assembly of this component.
Although the heater and thermostat can
be removed to facilitate handling, contact
with the white heatsink compound can be
minimized by leaving these items in place.
Remove the (2) screws holding the top
plate of the Detector , and move the plate
along the wires and away from the De-
tector .
Remove the (2) screws holding the tube
assembly in place. Hold the tubing with
one hand while inverting the Detector
Housing with the other, allowing the Re-
action Chamber O-ring and window to be
removed from below.
Installation
To reinstall, hold the housing in the in-
verted position while sliding the Reaction
Chamber O-ring and window into position
and the tubing into the slot in the housing.
Hold the Reaction Chamber in place while
rotating the housing upright. Replace the
hold-down screws.
NOTE
Component Positioning. The proce-
dure described above is for the pur-
pose of maintaining the relative
positions of windows and O-ring to the
Reaction Chamber during installation.
Replace the top cap and screws. Reverse
the removal procedure to reinstall the
Detector Assembly into the Analyzer
Module.
b. Photodiode
Removal
Remove the Detector Assembly as de-
scribed above. Invert the housing to ac-
cess the mounting bracket. Remove the
(3) screws and shoulder washers from the
bracket. Remove the bracket, insulating
disk and bottom plate as a unit to mini-
mize the spread of the heatsink com-
pound.
Remove the (2) screws holding the lower
section of the Detector Housing, then
slide the section along the cable and re-
move.
Remove the (2) screws holding the
socket, thermistor and photodiode in
place, being careful not to lose the wash-
ers that are used as shims.
Grasp the socket and photodiode base
while slowly rotating to separate the pho-
todiode from the housing. Some friction
will be felt as an O-ring is used around the
photodiode as a seal.
Installation
To replace the photodiode, carefully re-
move the diode from the green socket,
and replace with a new one. Before
mounting the new diode, the top cap of
the enclosure should be temporarily re-
moved and the (2) screws holding the
Reaction Chamber loosened about two
turns. This allows air which is trapped
between the O-ring seals to escape when
the diode is inserted. It also maintains the
Instruction Manual
748467-A
January 2002
5-6 Maintenance and Service Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
position of the O-ring and window in the
upper compartment.
The new photodiode should be slowly in-
serted into the housing while gradually
rotating the body. This allows the O-ring
to properly seat. Continue replacing
screws, washers, thermistors, etc., with
the thicker shim (washer) on the opposite
side of the socket from the thermistor.
Replace the lower section of the housing,
then the bottom cover, insulator and
bracket with the shoulder washers and
screws.
Re-tighten the screws in the Reaction
Chamber (upper section). Replace the top
cap and its screws.
To reinstall in the Analyzer Module, re-
verse the procedure for removal as indi-
cated above.
Figure 5-4. Chemiluminescense Detector Assembly
Photodiode
Ozone
Detector Mounting
Bracket
Photodiode Socket
Assembly
Thermistor
Assembly
Reaction
Chamber
Sapphire
Window
Exhaust
Sample
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 5-7
Model MicroCEM
Figure 5-5. Chemiluminescense Detector Assembly – Exploded View
O-Ring 854540
Sapphire Window
Cushioning Gasket
Tubing Cover
Heater
*
Heater
*
Thermostat
*
M3X0.5 x 16mm Screw (2)
3mm Spring Washer (2) Reaction Chamber
Retainer Gasket
Detector Header
M3X0.5 x 25mm Screw (2)
3mm Spring Washer (2)
O-Ring 876478
Photodiode Assembly
(see detail below)
(see detail below)
M3X0.5 x 20mm Screw (2)
3mm Spring Washer (2)
Detector Cover
M3X0.5 x 16mm Screw (2)
3mm Spring Washer (2)
Photodiode
Cable Lower Cover
Insulator
(between Lower Cover
and Mounting Bracket)
Nylon Shoulder
Washers (3)
Photodiode Case
Ground
M3X0.5 x 16mm
Screw (3)
Thermistor
655216
Photodiode
655258
Thermistor Spacer
Thermistor Shim
Photodiode Socket Assembly
Assembly of Photodiode
No. 6 Flat Washer (2)
*Heater/Thermostat Assembly 655235.
Instruction Manual
748467-A
January 2002
5-8 Maintenance and Service Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Troubleshooting 6-1
Model MicroCEM
SECTION 6
TROUBLESHOOTING
6-1 TROUBLESHOOTING LEAKS
Liberally cover all fittings, seals, and other pos-
sible sources of leakage with a suitable leak test
liquid such as SNOOP (part 837801). Bubbling
or foaming indicates leakage. Checking for bub-
bles will locate most leaks but could miss some,
as some areas are inaccessible to the applica-
tion of SNOOP. For positive assurance that
system is leak free, perform one of the tests
above.
NOTE:
Refer to Specification in Preface for maxi-
mum pressure limitations.
For differential measurement, the leak check
must be performed for the measurement and
reference side separately.
For analyzers with parallel gas paths, the
leak check must be performed for each gas
path separately.
6-2 POCKET PC CONNECTION FAILURE
In the event the connection between the Pocket
PC and the MicroCEM fails, a connection failure
dialog will be displayed. It will display the fol-
lowing message:
Connection with uCEM lost, retrying…
A Cancel button will be displayed. The Micro-
CEM software will continue to attempt to recon-
nect with the MicroCEM indefinitely and will stop
when a connection is made or the cancel button
is pressed.
If the Cancel button is pressed, any setting
changes that were made without pressing OK to
accept will be lost. If Auto Calibration was in
process, it will be completed by the MicroCEM
even though the connection was lost.
6-3 TROUBLE LED
The Trouble LED output is activated whenever
there is a critical alarm that has not been ac-
knowledged. This provides both an output from
the MicroCEM box and an LED indication.
Instruction Manual
748467-A
January 2002
6-2 Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Replacement Parts 7-1
Model MicroCEM
SECTION 7
REPLACEMENT PARTS
1020839-100 PMD Module Assembly
1020840-100 NDIR Module Assembly
1020841-101 PDD Module Assembly
1020842-100 AUX Module Assembly
1020843-100 EXIO Module Assembly
1020869-100 Thermoelectric Cooler Assembly
1020973-100 Thermistor
1020987-100 Heater Assembly
42706504 Desiccant Bulbs
42711801 Electrical Cable
634398 Capillary, Vent
638614 Pressure Gauge
655216 Thermistor Assembly
655250 Converter Assembly
655289 Restrictor, Bulkhead
657716 Power Supply, Ozonator
657719 Ozone Generator
658157 Restrictor, Brass
659754 Photodiode Detector
90003311 Paramagnetic Detector
902124 Flowmeter
905778 4-Port Manifold
905779 2-Way Valve
905780 3-Way Valve
905871 Relay, Power 15A
Instruction Manual
748467-A
January 2002
7-2 Replacement Parts Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Return of Material 8-1
Model MicroCEM
SECTION 8
RETURN OF MATERIAL
8-1 RETURN OF MATERIAL
If factory repair of defective equipment is re-
quired, proceed as follows:
1. Secure a return authorization from a
Rosemount Analytical Inc. Sales Office or
Representative before returning the
equipment. Equipment must be returned
with complete identification in accordance
with Rosemount instructions or it will not
be accepted.
2. In no event will Rosemount be responsible
for equipment returned without proper
authorization and identification.
3. Carefully pack the defective unit in a sturdy
box with sufficient shock absorbing mate-
rial to ensure no additional damage occurs
during shipping.
4. In a cover letter, describe completely:
a. The symptoms that determined the
equipment is faulty.
b. The environment in which the equip-
ment was operating (housing, weather,
vibration, dust, etc.).
c. Site from where the equipment was
removed.
d. Whether warranty or non-warranty
service is expected.
e. Complete shipping instructions for the
return of the equipment.
5. Enclose a cover letter and purchase order
and ship the defective equipment accord-
ing to instructions provided in the Rose-
mount Return Authorization, prepaid, to:
Rosemount Analytical Inc.
Process Analytic Division
Customer Service Center
1-800-433-6076
If warranty service is expected, the defective
unit will be carefully inspected and tested at
the factory. If the failure was due to the condi-
tions listed in the standard Rosemount war-
ranty, the defective unit will be repaired or
replaced at Rosemount’s option, and an oper-
ating unit will be returned to the customer in
accordance with the shipping instructions fur-
nished in the cover letter.
For equipment no longer under warranty, the
equipment will be repaired at the factory and
returned as directed by the purchase order
and shipping instructions.
8-2 CUSTOMER SERVICE
For order administration, replacement parts,
application assistance, on-site or factory re-
pair, service or maintenance contract informa-
tion, contact:
Rosemount Analytical Inc.
Process Analytic Division
Customer Service Center
1-800-433-6076
8-3 TRAINING
A comprehensive Factory Training Program of
operator and service classes is available. For
a copy of the Current Operator and Service
Training Schedule, contact the Technical
Services Department at:
Rosemount Analytical Inc.
Phone 1-714-986-7600
FAX 1-714-577-8006
Instruction Manual
748467-A
January 2002
8-2 Return of Material Rosemount Analytical Inc. A Division of Emerson Process Management
Model MicroCEM
WARRANTY
Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from
defects in workmanship and material under normal use and service for a period of twelve (12)
months from the date of shipment by Seller. Consumables, glass electrodes, membranes, liquid
junctions, electrolyte, o-rings, etc., are warranted to be free from defects in workmanship and
material under normal use and service for a period of ninety (90) days from date of shipment by
Seller. Goods, part(s) and consumables proven by Seller to be defective in workmanship and/or
material shall be replaced or repaired, free of charge, F.O.B. Seller's factory provided that the
goods, part(s) or consumables are returned to Seller's designated factory, transportation charges
prepaid, within the twelve (12) month period of warranty in the case of goods and part(s), and in
the case of consumables, within the ninety (90) day period of warranty. This warranty shall be in
effect for replacement or repaired goods, part(s) and the remaining portion of the ninety (90) day
warranty in the case of consumables. A defect in goods, part(s) and consumables of the com-
mercial unit shall not operate to condemn such commercial unit when such goods, part(s) and
consumables are capable of being renewed, repaired or replaced.
The Seller shall not be liable to the Buyer, or to any other person, for the loss or damage directly
or indirectly, arising from the use of the equipment or goods, from breach of any warranty, or from
any other cause. All other warranties, expressed or implied are hereby excluded.
IN CONSIDERATION OF THE HEREIN STATED PURCHASE PRICE OF THE GOODS,
SELLER GRANTS ONLY THE ABOVE STATED EXPRESS WARRANTY. NO OTHER WAR-
RANTIES ARE GRANTED INCLUDING, BUT NOT LIMITED TO, EXPRESS AND IMPLIED
WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Limitations of Remedy. SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED BY DE-
LAY IN PERFORMANCE. THE SOLE AND EXCLUSIVE REMEDY FOR BREACH OF WAR-
RANTY SHALL BE LIMITED TO REPAIR OR REPLACEMENT UNDER THE STANDARD
WARRANTY CLAUSE. IN NO CASE, REGARDLESS OF THE FORM OF THE CAUSE OF AC-
TION, SHALL SELLER'S LIABILITY EXCEED THE PRICE TO BUYER OF THE SPECIFIC
GOODS MANUFACTURED BY SELLER GIVING RISE TO THE CAUSE OF ACTION. BUYER
AGREES THAT IN NO EVENT SHALL SELLER'S LIABILITY EXTEND TO INCLUDE INCIDEN-
TAL OR CONSEQUENTIAL DAMAGES. CONSEQUENTIAL DAMAGES SHALL INCLUDE, BUT
ARE NOT LIMITED TO, LOSS OF ANTICIPATED PROFITS, LOSS OF USE, LOSS OF REVE-
NUE, COST OF CAPITAL AND DAMAGE OR LOSS OF OTHER PROPERTY OR EQUIPMENT.
IN NO EVENT SHALL SELLER BE OBLIGATED TO INDEMNIFY BUYER IN ANY MANNER
NOR SHALL SELLER BE LIABLE FOR PROPERTY DAMAGE AND/OR THIRD PARTY CLAIMS
COVERED BY UMBRELLA INSURANCE AND/OR INDEMNITY COVERAGE PROVIDED TO
BUYER, ITS ASSIGNS, AND EACH SUCCESSOR INTEREST TO THE GOODS PROVIDED
HEREUNDER.
Force Majeure. Seller shall not be liable for failure to perform due to labor strikes or acts beyond
Seller's direct control.
Instruction Manual
748467-A
January 2002
© Rosemount Analytical Inc. 2001
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
ASIA - PACIFIC
Fisher-Rosemount
Singapore Private Ltd.
1 Pandan Crescent
Singapore 128461
Republic of Singapore
Phone: 65-777-8211
Fax: 65-777-0947
http://www.processanalytic.com
EUROPEAN TECHNOLOGY CENTER
Fisher-Rosemount GmbH & Co.
Industriestrasse 1
63594 Hasselroth
Germany
Phone: 49-6055-884 0
Fax: 49-6055-884209
EUROPE, MIDDLE EAST, AND AFRICA
Fisher-Rosemount Ltd.
Heath Place
Bognor Regis
West Sussex PO22 9SH
England
Phone: 44-1243-863121
Fax: 44-1243-845354
LATIN AMERICA
Fisher - Rosemount
Av. das Americas
3333 sala 1004
Rio de Janeiro, RJ
Brazil 22631-003
Phone: 55-21-431-1882
Model MicroCEM

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