Emerson Microcem Instruction Manual 748467 A

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Instruction Manual
748467-A
January 2002

Model MicroCEM
Continuous Emissions Monitor

http://www.processanalytic.com

ESSENTIAL INSTRUCTIONS
READ THIS PAGE BEFORE PROCEEDING!
Rosemount Analytical designs, manufactures and tests its products to meet many national and
international standards. Because these instruments are sophisticated technical products, you
MUST properly install, use, and maintain them to ensure they continue to operate within their
normal specifications. The following instructions MUST be adhered to and integrated into your
safety program when installing, using, and maintaining Rosemount Analytical products. Failure to
follow the proper instructions may cause any one of the following situations to occur: Loss of life;
personal injury; property damage; damage to this instrument; and warranty invalidation.
• Read all instructions prior to installing, operating, and servicing the product.
• If you do not understand any of the instructions, contact your Rosemount Analytical representative for clarification.
• Follow all warnings, cautions, and instructions marked on and supplied with the product.
• Inform and educate your personnel in the proper installation, operation, and maintenance of the
product.
• Install your equipment as specified in the Installation Instructions of the appropriate Instruction
Manual and per applicable local and national codes. Connect all products to the proper electrical and pressure sources.
• To ensure proper performance, use qualified personnel to install, operate, update, program,
and maintain the product.
• When replacement parts are required, ensure that qualified people use replacement parts specified by Rosemount. Unauthorized parts and procedures can affect the product’s performance,
place the safe operation of your process at risk, and VOID YOUR WARRANTY. Look-alike
substitutions may result in fire, electrical hazards, or improper operation.
• Ensure that all equipment doors are closed and protective covers are in place, except
when maintenance is being performed by qualified persons, to prevent electrical shock
and personal injury.
The information contained in this document is subject to change without notice.
Logos, trademarks and copyrights are property of their respective owners.

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

Instruction Manual
748467-A
January 2002

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
1-1
1-2
1-3

1-4

1-5
1-6

1-7
1-8
1-9
1-10
1-11
1-12
1-13

DESCRIPTION AND SPECIFICATIONS..............................................................................1-1
Overview................................................................................................................................1-1
Typical Applications...............................................................................................................1-1
Theory Of Operation..............................................................................................................1-1
a. Chemiluminescense NOX ................................................................................................1-1
b. Non-Dispersive Infrared (NDIR) CO ...............................................................................1-1
c. Paramagnetic O2 .............................................................................................................1-2
Detector Methodologies.........................................................................................................1-2
a. Non-Dispersive Infrared (NDIR)......................................................................................1-2
b. Paramagnetic Oxygen Method .......................................................................................1-6
c. Electrochemical Oxygen Method ....................................................................................1-7
Central Processing Unit.........................................................................................................1-9
a. Embedded Enhanced Bios .............................................................................................1-9
b. Specifications ..................................................................................................................1-9
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
PCMCIA Adapter ...................................................................................................................1-14
a. Features ..........................................................................................................................1-14
b. Software ..........................................................................................................................1-14
Modem...................................................................................................................................1-15
a. Features ..........................................................................................................................1-15
Flash Drive.............................................................................................................................1-16
a. Specifications ..................................................................................................................1-16
Pocket PC..............................................................................................................................1-18
a. Specifications ..................................................................................................................1-18
Wireless LAN Adapter ...........................................................................................................1-19
a. Specifications ..................................................................................................................1-19
500 Watts Power Supply .......................................................................................................1-20
a. Features ..........................................................................................................................1-20
MicroCEM Specifications.......................................................................................................1-21
a. Analyzer ..........................................................................................................................1-21
b. Probe/Sample Handling ..................................................................................................1-22

Rosemount Analytical Inc.

A Division of Emerson Process Management

Contents

Instruction Manual
748467-A
January 2002

2-0
2-1
2-2
2-3
2-4

2-5

3-0
3-1
3-2

3-3

3-4
3-5
3-6

3-7
3-8

3-9
3-10

Contents

Model MicroCEM
INSTALLATION ....................................................................................................................2-1
Overview................................................................................................................................2-1
a. Limitations .......................................................................................................................2-1
b. Mounting Options ............................................................................................................2-1
Location .................................................................................................................................2-1
Gases ....................................................................................................................................2-3
a. Connection ......................................................................................................................2-3
b. Conditioning ....................................................................................................................2-3
Electrical Connections ...........................................................................................................2-6
a. AC Power ........................................................................................................................2-8
b. Circular Connector Assembly Instructions......................................................................2-8
c. Interface Connections .....................................................................................................2-11
Analytical Leak Check ...........................................................................................................2-14
a. Flow Indicator Method.....................................................................................................2-14
b. Manometer Method .........................................................................................................2-15
OPERATION .........................................................................................................................3-1
Startup Procedure .................................................................................................................3-1
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
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
MicroCEM Factory Settings...................................................................................................3-12
a. PID Control Loop Factory Settings .................................................................................3-15
MicroCEM Administration ......................................................................................................3-17
a. User Settings...................................................................................................................3-17
b. Auto Logoff......................................................................................................................3-17
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
View Data Logs .....................................................................................................................3-21
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
Viewing MicroCEM Data with MS Excel................................................................................3-27
Auto Calibration .....................................................................................................................3-28

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual

Model MicroCEM

748467-A
January 2002

4-0
4-1
4-2
4-3
4-4

SOFTWARE ..........................................................................................................................4-1
Overview................................................................................................................................4-1
MicroCEM User Interface Software.......................................................................................4-1
MicroCEM Web Server Software ..........................................................................................4-1
Software Development Management ....................................................................................4-2

5-0
5-1
5-2
5-3
5-4
5-5

MAINTENANCE AND SERVICE ..........................................................................................5-1
Overview................................................................................................................................5-1
Converter ...............................................................................................................................5-3
Ozone Generator...................................................................................................................5-4
Personality Modules ..............................................................................................................5-4
Chemiluminescense Detector Assembly...............................................................................5-5
a. Reaction Chamber ..........................................................................................................5-5
b. Photodiode ......................................................................................................................5-5

6-0
6-1
6-2
6-3

TROUBLESHOOTING ..........................................................................................................6-1
Troubleshooting Leaks ..........................................................................................................6-1
Pocket PC Connection Failure ..............................................................................................6-1
Trouble LED ..........................................................................................................................6-1

7-0

REPLACEMENT PARTS ......................................................................................................7-1

8-0
8-1
8-2
8-3

RETURN OF MATERIAL ......................................................................................................8-1
Return Of Material .................................................................................................................8-1
Customer Service ..................................................................................................................8-1
Training..................................................................................................................................8-1

Rosemount Analytical Inc.

A Division of Emerson Process Management

Contents

iii

Instruction Manual
748467-A
January 2002

Model MicroCEM
LIST OF ILLUSTRATIONS

Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 1-5.
Figure 1-6.
Figure 1-7.
Figure 1-8.
Figure 1-9.
Figure 1-10.
Figure 1-11.
Figure 1-12.
Figure 1-13.
Figure 1-14.
Figure 1-15.
Figure 2-1.
Figure 2-2.
Figure 2-3.
Figure 2-4.
Figure 2-5.
Figure 2-6.
Figure 2-7.
Figure 2-8.
Figure 3-1.
Figure 3-2.
Figure 3-3.
Figure 3-4.
Figure 3-5.
Figure 3-6.
Figure 3-7.
Figure 3-8.
Figure 3-9.
Figure 3-10.
Figure 3-11.
Figure 3-12.
Figure 3-13.
Figure 3-14.
Figure 3-15.
Figure 3-16.
Figure 3-17.
Figure 3-18.
Figure 3-19.
Figure 3-20.
Figure 3-21.
Figure 3-22.
Figure 3-23.
Figure 3-24.
Figure 3-25.
Figure 3-26.
Figure 4-1.
Figure 5-1.

Contents

Absorption Bands of Sample Gas and Transmittance of Interference Filters ....... 1-3
Opto-Pneumatic Gas Detector............................................................................... 1-4
Overall NDIR Method............................................................................................. 1-5
Paramagnetic Oxygen Analysis............................................................................. 1-6
Reaction of Galvanic Cell ...................................................................................... 1-7
Electrochemical Oxygen Sensor............................................................................ 1-8
CPU ....................................................................................................................... 1-9
ADIO Board.......................................................................................................... 1-10
ADIO Block Diagram............................................................................................ 1-12
PCMCIA Interface................................................................................................ 1-14
Modem ................................................................................................................. 1-15
128MB Flash Drive .............................................................................................. 1-16
Pocket PC ............................................................................................................ 1-18
Wireless LAN adapter.......................................................................................... 1-19
500 Watts Power Supply ..................................................................................... 1-20
MicroCEM Outline and Mounting Dimensions....................................................... 2-2
MicroCEM Gas Connections ................................................................................. 2-4
MicroCEM Flow Diagram....................................................................................... 2-4
MicroCEM Installation and Test Setup Configuration............................................ 2-5
MicroCEM Electrical Connections ......................................................................... 2-6
MicroCEM Wiring Diagram .................................................................................... 2-7
Leak Test Flow Method ....................................................................................... 2-14
Leak Test Manometer Method............................................................................. 2-15
Pocket PC .............................................................................................................. 3-1
MicroCEM Front Panel .......................................................................................... 3-2
MicroCEM Pocket PC Display (Main Display Shown) ........................................... 3-3
MicroCEM Menu .................................................................................................... 3-4
Pocket PC Alarms Screen ..................................................................................... 3-4
MicroCEM Login .................................................................................................... 3-6
Current User Indication.......................................................................................... 3-6
Range Settings ...................................................................................................... 3-7
Auto Calibration Settings ....................................................................................... 3-8
Auto Calibration Time and Frequency ................................................................... 3-8
Manual Calibration................................................................................................. 3-9
Manual Calibration Results.................................................................................... 3-9
Limit Settings ....................................................................................................... 3-10
Calibration Gas Settings ...................................................................................... 3-10
Maintenance Mode Settings ................................................................................ 3-11
User Settings ....................................................................................................... 3-17
Auto Logoff........................................................................................................... 3-17
View Data Logs.................................................................................................... 3-21
View Data Logs Table.......................................................................................... 3-22
Real-Time Web Page .......................................................................................... 3-23
Emissions Selection............................................................................................. 3-24
Emissions Table .................................................................................................. 3-24
Calibration Table.................................................................................................. 3-25
Download Web Page ........................................................................................... 3-26
New Web Query .................................................................................................. 3-27
Auto Calibration ................................................................................................... 3-28
MicroCEM Software Block Diagram ...................................................................... 4-1
MicroCEM Component Location............................................................................ 5-2

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
Figure 5-2.
Figure 5-3.
Figure 5-4.
Figure 5-5.

Converter Assembly .............................................................................................. 5-3
Personality Modules and Backplane. .................................................................... 5-4
Chemiluminescense Detector Assembly ............................................................... 5-6
Chemiluminescense Detector Assembly – Exploded View ................................... 5-7

LIST OF TABLES
Table 2-1.
Table 2-2.
Table 2-3.
Table 2-4.
Table 2-5.
Table 2-6.
Table 2-7.
Table 2-8.
Table 2-9.
Table 3-1.
Table 3-2.
Table 3-3.
Table 3-4.
Table 3-5.
Table 3-6.
Table 3-7.
Table 3-8.
Table 3-9.
Table 3-10.

Rosemount Analytical Inc.

Interface Connections.......................................................................................... 2-11
AC Power Connection Terminal Assignments..................................................... 2-11
Analog Output Terminal Assignments ................................................................. 2-11
Digital Output Terminal Assignments .................................................................. 2-12
RS-232 Interface Terminal Assignments............................................................. 2-13
RS-485 Terminal Assignments ............................................................................ 2-13
LAN Interface Terminal Assignments .................................................................. 2-13
Phone Line (Modem) Terminal Assignments ...................................................... 2-13
Antenna (Peltier Power) Connection Terminal Assignments .............................. 2-14
Status Values......................................................................................................... 3-3
Alarm Summary ..................................................................................................... 3-5
Factory Settings – Calibration.............................................................................. 3-13
Factory Settings - General................................................................................... 3-14
PID Settings – Section Names ............................................................................ 3-15
PID Settings – Sections Descriptions .................................................................. 3-16
Measurement Log File Format............................................................................. 3-18
Calibration Log File Format ................................................................................. 3-19
Alarm Log File Format ......................................................................................... 3-20
Average Period Selection .................................................................................... 3-21

A Division of Emerson Process Management

Contents

Instruction Manual
748467-A
January 2002

Contents

Model MicroCEM

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
PREFACE

The purpose of this manual is to provide information concerning the components, functions, installation 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.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Preface

P-1

Instruction Manual
748467-A
January 2002

Model MicroCEM
INTENDED USE STATEMENT

The MicroCEM Continuous Emissions Monitor is intended for use as an industrial process measurement 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 applications.

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.

P-2

Preface

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
DANGER.
TOXIC GAS

This device may contain explosive, toxic or unhealthy gas components. Before cleaning or changing 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.

WARNING: TOXIC GAS

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 connections 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 modification 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 pressurized carrier gas, such as helium, hydrogen, or nitrogen. See General Precautions for Handling and
Storing High Pressure Gas Cylinders, page P-5.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Preface

P-3

Instruction Manual
748467-A
January 2002

Model MicroCEM
CAUTION.
HEAVY WEIGHT

Use two persons or a suitable lifting device to move or carry the instrument.

P-4

Preface

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual

Model MicroCEM

748467-A
January 2002

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.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Preface

P-5

Instruction Manual
748467-A
January 2002

Model MicroCEM
DOCUMENTATION

The following MicroCEM instruction materials are available.
cal representative to order (See Section 8).

Contact Customer Service Center or the lo-

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)

P-6

Preface

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
SECTION 1
DESCRIPTION AND SPECIFICATIONS

NO2 and oxygen (O2). Some of the NO2
molecules produced are in an electronically excited state (NO2* where the * refers to the excitation). These revert to the
ground state, with emission of photons
(essentially, red light). The reactions involved are:

1-1 OVERVIEW
The MicroCEM Analyzer Module is designed
to continuously determine the concentration of
O2 , CO, and NOx in a flowing gaseous mixture. The concentration is expressed in percent (%) or parts-per-million (PPM).

NO2 + O3 → NO2* + O2

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.

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 MicroCEM is enclosed in a rugged NEMA
4X, IP65 type enclosure, for harsh environment. The analysis enclosure utilizes convection cooling with no air intake and air vents.
The analysis enclosure is modular, general
purpose and easily expandable. It utilizes industry standard components such as PC/104
boards, and modular signal conditioning modules.

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 electronically excited state, followed by immediate decay to the non-excited state,
accompanied by emission of photons.
These photons are detected by a photomultiplier tube which produces an output
proportional to the concentration of NOx
in the sample.

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.

To minimize system response time, an
internal sample bypass feature provides
high-velocity sample flow through the
analyzer.

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

Rosemount Analytical Inc.

A Division of Emerson Process Management

Non-Dispersive Infrared (NDIR) CO
The optical bench can selectively measure multiple components in a compact
design by using a unique dual optical
bench design. Depending on the application, any two combinations of NDIR channels can be combined on a single
chopper motor/dual source assembly.

Description and Specifications

1-1

Instruction Manual
748467-A
January 2002

Other application-dependent options include a wide range of sample cell materials, 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 absorption, modulation by the chopper motor and the fill gas of the detector
chambers. The gas flow/sensor output is
proportional to the measured gas concentration. The optical bench is further
enhanced by a novel “Look-through” detector technique. This design allows two
detectors to be arranged in series --- enabling two different components to be
measured on a single optical bench. The
optical bench contains a unique eddy current drive chopper motor and source assembly. 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 susceptibility of the sample gas. Oxygen is
strongly paramagnetic, while other common gases are not. The detector used is
compact, has fast response and a wide
dynamic range. The long life cell is corrosion 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 different 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 infrared radiation by the sample gas being

1-2

Description and Specifications

Model MicroCEM
measured. The gas-specific wavelengths
of the absorption bands characterize the
type of gas while the strength of the absorption gives a measure of the concentration 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 detector signal thus alternates between concentration dependent and concentration
independent values. The difference between the two is a reliable measure of the
concentration of the absorbing gas component.
Depending on the gas being measured
and its concentration, one of two different
measuring methods may be used as follows:
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 expected to be encountered in practice absorbs 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 Figure 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.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
The signal generation is accomplished
with a pyroelectrical (solid-state) detector.
The detector records the incoming infrared radiation. This radiation is reduced by
the absorption of the gas at the corresponding 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 material.

CO2

60
54

Reference

54
36

CO2

Transmittance (%)

Absorption Band

3000

3200 3400

3600

3800

4000

4200

4400

4600

4800

5000

5200

5400

5600

Wave Length (nm)

Figure 1-1. Absorption Bands of Sample Gas and Transmittance of Interference Filters

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-3

Instruction Manual
748467-A
January 2002

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 pneumatic detector.
The pneumatic detector compares and
evaluates the radiation from the measuring and reference sides of the analysis
cell and converts them into voltage signals proportional to their respective intensity.
The pneumatic detector consists of a gasfilled absorption chamber and a compensation chamber which are connected by a
flow channel in which a Microflow filament
sensor is mounted. This is shown in Figure 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 window which is transparent for infrared radiation. The window is usually Calcium
Fluoride (CaF2).
Absorption chamber

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 absorption chamber is heated, expands and
some of it passes through the flow channel 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 reference side. Absorption chamber gas becomes 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 electrical pulses which are processed into the
corresponding analyzer output.
CaF2 Window

Flow channel with
Microflow sensor

Compensation chamber

Figure 1-2. Opto-Pneumatic Gas Detector

1-4

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

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 Correlation (IFC) method, the infrared radiation then passes through combinations of
interference filters. In the case of the
opto-pneumatic method, the infrared radiation 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 directly in the appropriate physical concentration units such as percent volume,
ppm, mg/Nm3, etc. This is shown in Figure 1-3.

MOTOR

Light Source
Chopper Blade
Duplex Filter Disc

Adapter Cell
(high measuring range)
Analysis Cell
(undivided)

Analysis Cell
(measuring side)

Filter Cell

Analysis Cell
(reference side)

Preamplifier

Pyroelectric Detector
(solid-state detector)
Filter Cell

Gas Detector

Preamplifier

Chopper Blade

Figure 1-3. Overall NDIR Method

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-5

Instruction Manual
748467-A
January 2002

Model MicroCEM
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.

Paramagnetic Oxygen Method
The paramagnetic principle refers to the
induction of a weak magnetic field, parallel and proportional to the intensity of a
stronger magnetizing field.
The paramagnetic method of determination of oxygen concentration utilizes nitrogen 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 diamagnetic or repelled by a magnet.

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 restoring torque to return the quartz bar to
its equilibrium position is a direct measure
of the O2 concentration in the sample gas.

A small mirror that reflects a light beam
coming from a light source to a photodetector, is mounted on the platinum ribbon.
A strong permanent magnet specifically
shaped to produce a strong, highly inhomogeneous magnetic field inside the
analysis cell, is mounted outside the wall
of the cell.

The complete paramagnetic analysis cell
consists of an analysis chamber, permanent magnet, processing electronics, and
a temperature sensor. The temperature
sensor is used to control a heat exchanger to warm the measuring gas to
about 55 °C. Refer to Figure 1-4.

When oxygen molecules enter the cell,
their paramagnetism will cause them to

Permanent Magnet

Platinum Wire
Mirror
Quartz Sphere(s)

Wire Loop
Light
Source
Photodetector

Amplifier

Display

Figure 1-4. Paramagnetic Oxygen Analysis

1-6

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
c.

The electric current between the electrodes is proportional to the O2 concentration 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 concentration.

Electrochemical Oxygen Method
The electrochemical method of determining oxygen concentration is based on the
galvanic cell principle shown in Figure
1-5.
The electrochemical oxygen sensor (Figure 1-6) incorporates a lead and gold galvanic process with a lead anode and a
gold cathode, using an acid electrolyte.

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 sensitivity and the output will become unstable. The recommended practice is
to purge the cell with conditioned ambient air between periods of measurement. 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.

Oxygen molecules diffuse through a nonporous Teflon membrane into the electrochemical 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.

(Red)

V out

Thermistor (5)

(Black)

Resistor (6)

(-)

(+)

Gold

Lead

Cathode (2)

Anode (1)

O2 + 4 H + 4 e → 2 H2O

2 Pb + 2 H2O → 2PbO + 4 H + 4 e
Electrolyte (3)
(ph 6)

Summary reaction O2 + 2 Pb → 2 PbO

Figure 1-5. Reaction of Galvanic Cell

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-7

Instruction Manual
748467-A
January 2002

Model MicroCEM
Black
Red

Lead Wire (Anode)
Lead Wire (Cathode)
Anode (Lead)
O-Ring
Plastic Disc
Plastic Disk

Resistor
Thermistor
Acid Electrolyte
Sponge Disc
Cathode (Gold Film)
Teflon Membrane

Figure 1-6. Electrochemical Oxygen Sensor

1-8

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
1-5 CENTRAL PROCESSING UNIT
The CPU is an Embedded Pentium-like AT
Computer in 5.75” x 8” form factor. The peripherals 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 system, 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.

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

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-9

Instruction Manual
748467-A
January 2002

Model MicroCEM

1-6 ANALOG/DIGITAL I/O BOARD
a.
The Analog/Digital IO (ADIO) Board is an offthe-shelf, complete data acquisition system in
a compact PC/104 packaging. The analog
section contains 32 input channels, multiplexed 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 includes two 12 bit D/A converters. Both sections 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 diagram.

Automatic Calibration
The ADIO board features automatic calibration of both analog inputs and outputs
for enhanced accuracy and reliability. The
potentiometers, which are subject to tampering and vibration, have been eliminated. 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 automatically on power up. The board includes
three precision voltage references for
negative full scale, zero, and positive fullscale. A calibration utility program provided with the board allows you to recalibrate the board anytime, in both unipolar
and bipolar modes, and store the new
settings in EEPROM.
Autocalibration applies to the 4 D/A channels 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 intervention. Again, calibration settings are
stored in EEPROM and automatically recalled on power-up.

Analog Inputs
The ADIO board provides split configuration capability, with more total input channels than any other PC/104 analog I/O
board. The board can be user-configured
in any of three ways:

Figure 1-8. ADIO Board

1-10

Description and Specifications

Channels
Format
32
32 single-ended
24
8 differential, 16 single-ended
16
16 differential

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
c.

Programmable Input Ranges

A programmable gain amplifier, programmable 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 software for maximum flexibility.
Mode
Unipolar
Unipolar
Unipolar
Unipolar
Unipolar
Bipolar
Bipolar
Bipolar
Bipolar
Bipolar
d.

FullInput
Gain
scale
Range
10V
1 0-10V
5V
1 0-5V
5V
2 0-2.5V
5V
4 0-1.25V
5V
8 0-0.625V
10V
1 ±10V
5V
1 ±5V
5V
2 ±2.5V
5V
4 ±1.25V
5V
8 ±0.625V

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 simultaneously. Both unipolar and bipolar output
ranges are supported with jumper configuration. And on power up, all outputs
are reset to 0V automatically.

Resolution
0.153mV
0.076mV
0.038mV
0.019mV
0.0096mV
0.305mV
0.153mV
0.076mV
0.038mV
0.019mV

Enhanced Trigger and Sampling Control 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 sample/hold output signal, A/D trigger in and
out lines (to enable synchronization of
multiple boards) and external A/D clocking.

Rosemount Analytical Inc.

Analog Outputs

A Division of Emerson Process Management

Mode
Unipolar
Unipolar
Bipolar
Bipolar
f.

Fullscale
10V
5V
10V
5V

Output
Resolution
Range
0-10V
2.44mV
0-5V
1.22mV
±10V
4.88mV
±5V
2.44mV

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 2byte 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 between 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 requiring 2 8-bit read operations. The net
result of this streamlined design is that the
ADIO board supports gap-free A/D sampling at rates up to 200,000 samples per
second, twice as fast as our previous
boards.

Description and Specifications

1-11

Instruction Manual
748467-A
January 2002

AUTOCALIBRATION
CIRCUIT

INPUT MUX

+15V -15V

Model MicroCEM

DC/DC
16-BIT A/D
CONVERTER
+15V

X1,2,4,8

ANALOG
INPUTS
0-31 SE
0-15 DI

PROGRAMMABLE
GAIN AMP
1K X8
FIFO

12-BIT A/D
CONVERTERS

ANALOG
OUTPUTS 0-3

TIMING AND
CONTROL SIGNALS
ADDR

MASTER
CONTROLLER

CTRL

82C54
COUNTER/TIMER

16-BIT DATA
10 MHZ
OSCILLATOR
8255 CIRCUIT

HIGH CURRENT
DRIVE

PC/104
BUS

24 DIGITAL I/O

BUFFER

PORT A

BUFFER

PORT B

BUFFER

PORT CH

BUFFER

PORT CL
ACK/STROBE

Figure 1-9. ADIO Block Diagram

1-12

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

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

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-13

Instruction Manual
748467-A
January 2002

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 FFSII, 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

Features
Dimensions
Compliant with the PC/104 standard
Compatible with AT PC/104 CPU modules
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

Type III ATA mass storage

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 compatible)
J4 : PC/104 16 bit extension (AT extension compatible).
b.

Software
Software mappable memory windows and
one I/O window.
Jumperless interrupt steering from PC
Card to system.

Figure 1-10. PCMCIA Interface

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

1-14

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
1-8 MODEM
The PC/104 Modular Modem is a selfcontained 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.

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

Figure 1-11. Modem

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-15

Instruction Manual
748467-A
January 2002

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%

1-16

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

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
Read .............................................. 35 mA RMS @3.3 V
Write .............................................. 35 mA RMS @3.3 V

500 µA @5.0 V
50 mA RMS @5.0 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

Mean Time Between Failures

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-17

Instruction Manual
748467-A
January 2002

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

1-18

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

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) typical indoor installations (intervening metal and thick concrete structures 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

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-19

Instruction Manual
748467-A
January 2002

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 commercial and industrial systems. Providing tightly regulated DC power, the power supply delivers full output performance 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

1-20

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

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 architecture, 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 Contact
O2 Limit Exceed, CO Limit Exceed, NOx Limit Exceed, O2 Low
Range, CO Low Range, NOX Low Range. - TTL: 5 VDC Max Current 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

Rosemount Analytical Inc.

A Division of Emerson Process Management

Description and Specifications

1-21

Instruction Manual
748467-A
January 2002

Model MicroCEM
Paramagnetic
O2

ElectroChemical
O2

NDIR
CO

Chemiluminescense
NOX

Linearity

< ± 1%

< ± 1%1

Zero Drift
Span Drift
Repeatability
Response Time (t90)
Influence of Ambient
Temperature
(-20°C to 45°C)
On Zero
On Span

< ± 1% /day
< ± 1% /day
< ± 1%
10< ± t90< ±-15

< ± 1% /day
< ± 1% /day
< ± 1%
10< ± t90< ± 15

< ± 1% /day
< ± 1% /day
< ± 1%
15s< ± t90< ± 20s

< ± 1% /day 1
< ± 1% /day 1
< ± 1%/day 1
15s< ±-t90< ± 20s

< ± 1%
< ± 1%

< ±-2%
< ±-2%

< ± 1%
< ± 1%

< ±-2%
< ±-2%

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" tubing).
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 seconds 2 times per day). (Pressure Regulation by Customer.)

0-10ppm NOx range is <± 3%.

1-22

Description and Specifications

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
SECTION 2
INSTALLATION
WARNING
ELECTRICAL SHOCK HAZARD

2-1 OVERVIEW
a.

POSSIBLE EXPLOSION HAZARD

Ambient Temperature:-30° to 50° Celsius
(-4° to 122° F)

Do not open while energized. Do not operate without doors and covers secure.
Installation requires access to live parts
which can cause death or serious injury.

Relative Humidity:5% to 99%
b.

DANGER.
ELECTRICAL SHOCK HAZARD
Installation and servicing of this device requires access to components that may
present electrical shock and/or mechanical
hazards. Refer installation and servicing to
qualified service personnel.

Limitations

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 climates, 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
CAUTION.
CODE COMPLIANCE
Installation of this device must be made in
accordance with all applicable national
and/or local codes. See specific references on the installation drawing located
in the rear of this manual.

The MicroCEM is designed to be installed in
an outdoor environmental location. It is recommended that the analyzer be located out of
direct sunlight and direct rain/snow to the extent 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 sample gas lines.

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 Precautions for Handling and Storing High
Pressure Gas Cylinders, page P-5.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Installation

2-1

Instruction Manual
748467-A
January 2002

Model MicroCEM

25.2
640.1

11.6
295.3
20.2
513.1
4.3
109.2

1.1
TYP
27.9

17.9
456.9
MOUNTING
DIMENSION

1.1
27.9

4.9
124.5

SAMPLE
CALIBRATION

1.5
TYP
38.1

GAS 3
GAS 2
GAS 1
OZONE / AIR
VENT

25.5
647.7
MOUNTING
DIMENSION
24.6
624.8

KEY LOCK

HINGE

4.9
124.5

CLEARANCE HOLE
FOR 3/8 BOLT
(4 PLACES)

1.5
TYP
38.1

AC POWER ANALOG
DIGITAL
INPUT
INTERFACE INTERFACE

RS232
LAN
RS485
INTERFACE INTERFACE INTERFACE

PHONE
LINE

ANTENNA

7.1
180.3

Figure 2-1. MicroCEM Outline and Mounting Dimensions

2-2

Installation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
2-3 GASES
NOTE
For external gas lines, the use of new tubing throughout is strongly recommended.
The preferred type is teflon or stainless
steel, sealed at both ends.
a.

Connection

The gas conditioning must meet the following conditions:
•

Free of condensable constituents

•

Free of dust above 2 µm

Besides sample gas, the MicroCEM requires other gases for operation. In most
cases, one or more Calibration Standards
must be provided. These should be cylinders 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.

•

Free of aggressive constituents which
may damage the gas paths

•

Temperature and pressure in accordance with the specifications

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 metallic as opposed to elastomeric diaphragm,
and provide for ¼ inch compression fitting
outlet and should be LOX clean.

An optional barometric pressure compensation feature can be supplied. This requires a pressure sensor with a range of
800 – 1,100 hPa. The concentration values computer by the detectors will then
be corrected to eliminate erroneous
measurements due to changes in barometric pressure.

NOTE
All connections specified in the Installation Drawing, in conjunction with
the Application Data Sheet, should be
made.
b.

system is used with corrosive gases, it
must be verified that there are no gas
components which may damage the gas
path components.

Conditioning

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.

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 recommended.
NOTE
The maximum gas flow rate for paramagnetic oxygen detectors is 1.0
l/min!

All gases must be supplied to the analyzer as conditioned gases! When the

Rosemount Analytical Inc.

A Division of Emerson Process Management

Installation

2-3

Instruction Manual
748467-A
January 2002

Model MicroCEM

Figure 2-2. MicroCEM Gas Connections

IN
3-WAY
VALVE

NDIR DETECTOR
90003225

OUT

FLOWMETER
W/VALVE

CONVERTER
656715
SAMPLE

PARAMAGNETIC
DETECTOR
90003311

GAUGE
638614

CAL
CAL GAS 3
CAL GAS 2
REGULATOR
904017

CAL GAS 1
OZONE AIR
2-WAY VALVE
MANIFOLD
ASSEMBLY

EXHAUST

OZONE GENERATOR
659494

VENT
CAPILLARY
634398

DETECTOR
659754

Figure 2-3. MicroCEM Flow Diagram

2-4

Installation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM

Sample Inlet
½” FPT

MicroCEM Analyzer

Sample Handling System

Stack

Sample
Flow
Power In
115 VAC 60Hz 5A
Dry Contact
Initiate Auto Calibration

Instrument
Air

3
2

Atmospheric
Pressure
Calibration Line
to Analyzer

¼” Teflon tubing. Customer supplied.

Drain to safe location.

Customer supplied.

Electrical connections. See
Section 2-4 and Figure 2-5.

Sample From
Analyzer

O2 / NO
Mid Range

O2 / NO
High Range

Nitrogen

Figure 2-4. MicroCEM Installation and Test Setup Configuration

Rosemount Analytical Inc.

A Division of Emerson Process Management

Installation

2-5

Instruction Manual
748467-A
January 2002

Model MicroCEM
tual electrical connections will be specified in
the Application Data package. All connections
are not necessary for every application.

2-4 ELECTRICAL CONNECTIONS
NOTE

Cable length for these signals should not exceed 3,000 feet (914 meters), to avoid excessive capacitance and corresponding signal
distortion.

The enclosure is a NEMA 4. All entry locations must be sealed.
Connect all required signal cables to the connections at the bottom of the MicroCEM. The
cable locations are indicated on the inside
bottom cover of the MicroCEM box. The ac-

AC POWER ANALOG
INPUT
INTERFACE

DIGITAL
INTERFACE

All electrical connections are made through
the bottom of the MicroCEM enclosure using
circular connectors.

RS232
LAN
RS485
INTERFACE INTERFACE INTERFACE

AC POWER INPUT – J1
ANALOG INTERFACE – J2
DIGITAL INTERFACE – J3
RS232 INTERFACE - J4

PHONE
LINE

ANTENNA

LAN INTERFACE – J5
RS485 INTERFACE – J6
PHONE LINE – J7
ANTENNA – J8

Figure 2-5. MicroCEM Electrical Connections

2-6

Installation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
EXIO
A22
DIGITAL

A20
EXTERNAL
CONNECTIONS

ANTENNA

PHONE

AC IN

ADIO
A3

CPU
A4

CN15

CN16B

PC-104

J4
PC-104

4-20 mA
CURRENT LOOPS

CO
NOx

BACKPLANE
A2

CN16C

LAN
RS485

AXX

PRIMARY
POWER
SUPPLY A1 MODEM
A5

RS232

CIRCUIT
BREAKER
6A

ANALOG

AXX
DIAGNOSTIC OUTPUT
VOLTAGE

DIGITAL
I/O

O2
CO
NOx

AXX
LOW RANGE
READING

O2
CO
NOx

AXX
OVER LIMIT
INDICATOR
AXX
PLC

ANALOG
I/O

AXX
TROUBLE
AXX
EXTERNAL SWITCH INITIATE CALIBRATION
AXX
EXTERNAL PROCESS
FROM CUSTOMER

4-20mA CURR LOOP 1
4-20mA CURR LOOP 2

CB1

AXX

SAMPLE PUMP
DRAIN PUMP
PURGE VALVE
CALIBRATION VALVE

24VDC

CN8

POWER

AUX
A23

PUMP CONTROL

A17

J28

MOISTURE DETECTOR

J38
P4
A21

+5V
RS232

J17 POCKET PC
J11

PELTIER POWER
FAN POWER
TEMP SENSOR(INT)
TEMP SENSOR(EXT)

J18
J5
J2
J1

INTERNAL PANEL
CONNECTIONS
AND FUNCTIONS

CN16A

J1
J2
J3
J4

A17
BAROMETRIC
PRESSURE
A9
ZONE HEATER
(PELTIER)

A10
SYSTEM HEARTBEAT
INDICATOR

J48

SPAN VALVE (SV3)
MID VALVE (SV2)
ZERO VALVE (SV1)

J3
J2
J1

A11
VALVES
MANIFOLD
ASSEMBLY

SAMPLE VALVE (SV4)

CALIBRATION VALVE
ASSEMBLY

A12

PMD
A24
P1

O2 INPUT SENSOR

TEMP SENSOR

STEPPER MOTOR

LIGHT BARRIER SYNC

J2
TROUBLE
HEARTBEAT

NDIR
A25

DS1 (RED)
P2

DS2 (GRN)

A8
ELECTROCHEMICAL
DETECTOR
(PMD OPTION)

J18
J2
J28
J4

CO SIGNAL

LIGHT SOURCE

TEMP SENSOR

A8
NDIR
DETECTOR
CO

PDD
A25

A18
SAMPLE PRESS LIMIT

SAMPLE PRESSURE
SENSOR
A16
OZONE PRESSURE
SENSOR

OZONE PRESSURE

J1
J28
J2

PHOTODIODE

THERMAL SWITCH

TEMP SENSOR/HTR

PHOTODIODE
DETECTOR

A14
J10

J38
J4
J38

HI VOLTAGE
PWR SUP -1.7KV

CONVERTER HTR

A15

TEMP SENSOR

CONVERTER
ASSEMBLY

THERMAL SWITCH

A13
OZONATOR

Figure 2-6. MicroCEM Wiring Diagram

Rosemount Analytical Inc.

A Division of Emerson Process Management

Installation

2-7

Instruction Manual
748467-A
January 2002

Model MicroCEM

AC Power
Connect AC power through a 10A circuit
breaker that is to be located close to the
MicroCEM. The circuit breaker will provide 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.

2. Using correct crimp tool and locator,
cycle the tool once to be sure the indentors are open. Insert contact and
wire into locator. Squeeze tool handles firmly and completely to insure
a proper crimp. The tool will not release unless the crimp indentors in
the tool head have been fully actuated.

Circular Connector Assembly Instructions
Wire Stripping
Strip insulation from end of wire to be
crimped. Do not cut or damage wire
strands. Refer to table for proper stripping dimensions.
A

3. Release crimped contact and wire
from tool. Be certain the wire is visible through inspection hole in contact.
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 inspection hole.
Visual Inspection Hole

2-8

Installation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual

Model MicroCEM
Contact Insertion
1. Remove hardware from plug or receptacle and slip over wire bundle in
proper order for reassembly.

748467-A
January 2002

3. Press tool against contact shoulder
and, with firm and even pressure, insert wired contact and tool tip into
center contact cavity. A slight click
may be heard as metal retaining tines
snap into place behind contact shoulder.
4. Remove tool and pull back lightly on
wire to make sure contact is properly
seated. Repeat operation with remainder of contacts to be inserted,
beginning with the center cavity and
working outward in alternating rows.

2. Using proper plastic or metal insertion
tool for corresponding contact, position wire in tip of the tool so that the
tool tip butts up against the contact
shoulder.
5. After all contacts are inserted, fill any
empty cavities with wire sealing plugs.
Reassemble plug or receptacle hardware.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Installation

2-9

Instruction Manual
748467-A
January 2002

Model MicroCEM

Contact Extraction
1. Remove hardware from plug or receptacle and slide hardware back
along wire bundle.

4. Hold wire firmly in tool and extract
wired contact and tool. Repeat operation for all contacts to be extracted.

2. Using plastic or metal extraction tool
with proper color code corresponding
to contact size, place wire in tool.

5. Fill any empty wire cavities with wire
sealing plugs.

3. Insert tool into contact cavity until tool
tip bottoms against the contact shoulder, expanding clip retaining tines.

2-10

Installation

6. Reassembly plug or receptacle.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
c.

Interface Connections

AC Power

Shell
Size
12

Analog Interface

Digital Interface

RS232

Connection

Designator

No.
Contacts
3

AWG

Table

Table 2-2

26, 24, 22

Table 2-3

26, 24, 22

Table 2-4

28, 26, 24

Table 2-5

LAN Interface

28, 26, 24, 22

Table 2-7

RS485

24, 22, 20

Table 2-6

Phone Line (Modem)

24, 22, 20

Table 2-8

Antenna (Peltier Power)

14, 12

Table 2-9

Table 2-1. Interface Connections

SIGNAL NAME
L1
L2
GND

DEFINITION

PIN
A
C
B

85-264 VAC, 47-440 Hz
AC Ground

Table 2-2. AC Power Connection Terminal Assignments

SIGNAL NAME
O2CL+
O2CLCOCL+
COCLNOX+
NOXEXP1CL+
EXP1CLEXP2CL+
EXP2CLBAROP+
BAROP-

DEFINITION
O2 Reading, 4-20 mA Output
CO Reading, 4-20 mA Output
NOX Reading, 4-20 mA Output
External process No. 1, Current Loop input, 4-20 mA
External process No. 2, Current Loop input, 4-20 mA
Barometric pressure Compensator

Table 2-3.

Rosemount Analytical Inc.

0-10V input

PIN
1
2
3
4
5
6
7
8
9
10
11
12

Analog Output Terminal Assignments

A Division of Emerson Process Management

Installation

2-11

Instruction Manual
748467-A
January 2002

Model MicroCEM

SIGNAL NAME
SPUMPNO
SPUMPC
SPUMPNC
DPUMPNO
DPUMPC
DPUMPNC
PURGNO
PURGC
PURGNC
CALNO
CALC
CALNC
TRBLNO
TRBLC
TRBLNC
O2LR+
O2LRCOLR+
COLRNOxLR+
NOxLREXTDIG1+
EXTDIG1INCAL+
INCALO2OL+
O2OLCOOL+
COOLNOxOL+
NOxOL-

DEFINITION
Sample Pump Control, Dry contact, 110V 1A Rating

Drain Pump Control, Dry contact, 110V 1A Rating

Purge Valve Control, Dry contact, 110V 1A Rating

Calibration Valve Control, Dry contact, 110V 1A Rating

Trouble Indicator, Dry contact, 110V 1A Rating
O2 Low Reading Digital output (0=LR)
CO Low Reading Digital output (0=LR)
NOx Low Reading Digital output (0=LR)
Digital Input from External process
Initiate Calibration Switch Input
O2 Over Limit Indicator
CO Over Limit Indicator
NOx Over Limit Indicator
Not Used

PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32-37

Table 2-4. Digital Output Terminal Assignments

2-12

Installation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
SIGNAL NAME
DCD (pin 1)
DSR (pin 6)
RxD (pin 2)
RTS (pin 7)
TxD (pin 3)
CTS (pin 8)
DTR (pin 4)
RI (pin 9)
GND (pin 5)

DEFINITION
Data Carrier Detect Input
Data Set Ready Input
Receive Data Input
Request to Send Output
Transmit Data Output
Clear To Send Input
Data Terminal Ready Output
Ring Indicator Input
Signal Ground
Not Used

PIN
1
2
3
4
5
6
7
8
9
10-13

Table 2-5. RS-232 Interface Terminal Assignments
SIGNAL NAME
TxD/RxD+ (pin 2)
TxD/RxD- (pin 7)
GND (pin 3)

DEFINITION
Bi-directional Data
Ground

PIN
A
B
C

Table 2-6. RS-485 Terminal Assignments
SIGNAL NAME
TxD+ (pin 1)
TxD- (pin 2)
RxD+ (pin 3)
RxD- (Pin 6)

DEFINITION
Transmit Data
Receive Data
Not Used

Table 2-7.
SIGNAL NAME
TIP (pin T)
RING (pin R)

LAN Interface Terminal Assignments
DEFINITION

Modem Interface to Phone Line
Not Used

Table 2-8.
SIGNAL NAME
Vbb
Vbb_rtn
Gnd
Table 2-9.

Rosemount Analytical Inc.

PIN
1
2
3
4
5-6

PIN
A
B
C

Phone Line (Modem) Terminal Assignments
DEFINITION
+24VDC
+24V Return
GND

PIN
A
B
C

Antenna (Peltier Power) Connection Terminal Assignments

A Division of Emerson Process Management

Installation

2-13

Instruction Manual
748467-A
January 2002

Model MicroCEM

2-5 ANALYTICAL LEAK CHECK

If explosive or hazardous gas samples are
being measured with the MicroCEM, it is recommended that gas line fittings and components be thoroughly leak-checked prior to
initial application of electrical power, bimonthly
intervals thereafter, and after any maintenance which involves breaking the integrity of
the sample containment system.

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.

MicroCEM Analyzer

Inlet

N2
10 psig
(69 kPa)

Outlet

Flow Meter

Gas Outlet

Figure 2-7. Leak Test Flow Method

2-14

Installation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
b.

Close the inlet shut-off valve and, following 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 corrected before the introduction of any
flammable sample gas or application of
power.

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 approximately 50 hPa. The water column will be
about 500 mm.

MicroCEM Analyzer

Inlet

Outlet

Overpressure
Approx. 50 hPa

Water

Figure 2-8. Leak Test Manometer Method

Rosemount Analytical Inc.

A Division of Emerson Process Management

Installation

2-15

Instruction Manual
748467-A
January 2002

2-16

Installation

Model MicroCEM

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
SECTION 3
OPERATION
CAUTION.
Do not operate or service this instrument 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 assembled 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 correctly.
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).

Connecting Pocket PC to MicroCEM
1. Open MicroCEM door. Refer to
Figure 3-2.
2. Plug RS232 plug into adapter located on front panel.
3. Plug power supply cable into 5V
adapter
4. Turn Pocket PC on
5. In order to assure no other windows 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 MicroCEM .
10. Unit will display data in 3 to 5 seconds.

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 seconds.
3-2 POCKET PC USER INTERFACE
The MicroCEM User Interface runs on a
Pocket-PC with Windows CE operating
system. It communicates with the MicroCEM via serial communication port. All input to the Pocket-PC is done using a
pointing device that comes with the PocketPC.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Figure 3-1. Pocket PC

Operation

3-1

Instruction Manual
748467-A
January 2002

Model MicroCEM
Flowmeter

Printer
Connector
5V
Connector

Heartbeat
LED

VGA
Connector
RS232
Connector
Keyboard
Connector
Mouse
Connector

Trouble
LED

USB
Connector

Reset
Button

Floppy
Connector

IDE
Connector

Power Switch

Figure 3-2. MicroCEM Front Panel

3-2

Operation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
b.

Main Display
The MicroCEM Main Display (Figure
3-3) provides the status of the three
emissions channels. The status includes the current reading (updated
approximately every 2 seconds), the

last 1-minute average, and the last 15minute average. The status column
(Sts) indicates the status of the measurement and can be any of the values
in listed in Table 3-1. (“Status” shown in
order of precedence. Maintenance
mode status takes highest precedence.)
S. = Status
See Table 3-1.

Drag the edge of the
column to resize.

Use the scrollbar to
see full set of data.

Tools Menu
Provides access to all
functionality.
Note: Exit is only be available
when current user has
administrative access.

Toolbar Buttons
About
Data Logs
MicroCEM Admin
MicroCEM Settings
Alarms

Figure 3-3. MicroCEM Pocket PC Display (Main Display Shown)
STATUS
M
C
I
V
P
O

DESCRIPTION
Indicates that maintenance mode is active.
Calibration in process
Invalid Reading. Indicates that the reading is invalid due to calibration failure or sensor failure.
Valid Reading
Customer Process Off Line (Dry contact by customer)
MicroCEM System Off
Table 3-1. Status Values

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Operation

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Instruction Manual
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January 2002

Model MicroCEM

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 functions can be accessed.

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 acknowledged).. If the Show Historical
Alarms checkbox is checked, all noncurrent alarms are also shown (nonactive 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 current, 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 indicate that more than one alarm is active. Horizontal scroll bar is be used to
see Date and Time of the Alarms.

On-screen keyboard is available
at any time by clicking on the
keyboard button.

Figure 3-4. MicroCEM Menu

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 acknowledged, the System trouble output will
become inactive.

3-4

Operation

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Instruction Manual
748467-A
January 2002

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 requirements

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 maximum

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 specified 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.

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Alarm Summary

A Division of Emerson Process Management

Operation

3-5

Instruction Manual
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January 2002

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 MicroCEM 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 inactivity (Refer to the Auto Logout page
of the MicroCEM Administration dialog).

Model MicroCEM
f.

MicroCEM Login-Current User Indication
When a user is logged in, the MicroCEM 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.

Current User
Logoff Button

Figure 3-7. Current User Indication

Figure 3-6. MicroCEM Login

3-6

Operation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual

Model MicroCEM

748467-A
January 2002

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 Settings permission, a message will be displayed which reads “Permission denied”.
When the MicroCEM Settings are invoked
from the Tools menu or the MicroCEM Settings 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 outputs. 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 output. 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.

Tabs allow selection of the
MicroCEM Settings pages

Figure 3-8. Range Settings

NOTE
If only one range is needed, set the
Range 1 values to the range 2 value.
This will disable the dual range feature.

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Instruction Manual
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January 2002

Auto Calibration
The Auto-Calibration settings are set on
the Auto-Calibration page of the MicroCEM 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).

Model MicroCEM
c.

Auto Calibration Time and Frequency
The Auto-Calibration Time and Frequency tab allows specifying time and
frequency of the auto-calibration. Time
field requires military time format.

Figure 3-10. Auto Calibration Time and
Frequency
Figure 3-9. Auto Calibration Settings

3-8

Operation

Rosemount Analytical Inc.

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Instruction Manual

Model MicroCEM
d.

748467-A
January 2002

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 invoked 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 invoke a real calibration and will apply
new correction factor results when
done.

Figure 3-12. Manual Calibration Results

Figure 3-11. Manual Calibration

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Model MicroCEM

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 indicated on the main display and on the
Data-Logs display. It is also indicated
in the limit exceeded digital output.

Calibration Gas
The Calibration Gas emissions quantities 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 particular 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 3-13. Limit Settings

Figure 3-14. Calibration Gas Settings

3-10

Operation

Rosemount Analytical Inc.

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Instruction Manual

Model MicroCEM
g.

748467-A
January 2002

Maintenance Mode
Maintenance mode may be selected for
any of the emission types on the Maintenance Mode page of the MicroCEM
Settings.
Choosing maintenance mode will invoke an “M” flag” onto the data. Customer can perform routine maintenance
while in this setting

Figure 3-15. Maintenance Mode Settings

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Instruction Manual
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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 dialog to enter the Factory Settings. This

3-12

Operation

Model MicroCEM
password will not be provided to the customer. The list of settings is shown in Table 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.

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

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.

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

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

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.

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 completed.

Initial values for the emissions conversion slope and
offset used on a new system before the first Calibration is performed. These values should be set
manually before the first auto-calibration is performed.

Default allocation for O2/NOx/CO. 1 = Zero, 2 = Mid
Span, 3 = Span. Example: 133 =
O2=Zero,NOx=Span,CO=Span

Table 3-3. Factory Settings – Calibration

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Operation

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Instruction Manual
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January 2002

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.

NDIR Sync Low

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 detection.
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 detection.
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.

MinimumOnCurrent
MaximumOffCurrent

O2EmissionLimit
NOXEmissionLimit
COEmissionLimit
O2LowRange
COLowRange
NOXLowRange
O2HighRange
COHighRange
NOXHighRange
SamplePumpOn
LogsDir

These limits are the default values. On the Pocket PC these values will be used
when one of the “Defaults” buttons are pressed.

1 = Sample pump is used. 0 = Sample pump not used.
Directory where log files are saved (C:\uCEM\Logs).

StateFile

Maximum time allowed for the uCEM to warm-up when it is started up. If all temperature zones are not within allowed range within this period of time, the uCEM will
shutdown all heaters, coolers and processes.
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)

MaxWarmUpTime

Table 3-4. Factory Settings - General

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Rosemount Analytical Inc.

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Instruction Manual
748467-A
January 2002

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

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January 2002

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 parameter 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 adjustments 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 command based on change in error. It can be used to reduce overshoot, 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, Integral and Derivative gain. Decreasing this value effectively increases 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 temperature 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

3-16

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Instruction Manual
748467-A
January 2002

Model MicroCEM
3-5 MicroCEM ADMINISTRATION
The MicroCEM Administration dialog is only
available to users with MicroCEM Administration permission. If a user is not currently 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 Settings page (tab) is displayed initially.
a.

Auto Logoff
The number of minutes of inactivity after which a user is automatically logged
off is set on the Auto Logoff page of the
MicroCEM Administration.

User Settings
The user settings page of the MicroCEM Administration dialog allows users
to be added, deleted or modified. Each
user has a name, password, and permission settings. The permission settings include Settings permission that
allows access to the MicroCEM Settings dialog, and Administrative permission that allows access to the
MicroCEM Administration dialog. The
Settings permission also allows a user
to access the MicroCEM remotely using the web-based interface.

Figure 3-17. Auto Logoff

Figure 3-16. User Settings

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January 2002

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 measurement 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 information 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 imported into many types of software applications. The following parameters is factory
set for each of the log file types.
a.

This is how many log files can be created. When the maximum number of
log files is reached, the oldest file is
overwritten when new ones are created.
Emissions Log:
Calib Log:
Alarm Log:
c.

6
6
6

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.

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.
d.
Emissions Log:
Calib Log:
Alarm Log:

Maximum Number of Log Files

1 MB
4000 bytes
4000 bytes

Measurement Log File Format
The log file contains data in a flat, ASCII, 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

Percent O2 (percent)

10.5

CO parts per million

NOx

NOx parts per million

CO Limit

CO Limit exceeded alarm, 0=inactive, 1=active

NOx Limit

NOx Limit exceeded alarm, 0=inactive, 1=active

O2 Status

V=Valid, M=Maintenance Mode, C=Calibration in process,
I=Invalid (calibration failed or sensor in failed state)

CO Status

V=Valid, M=Maintenance Mode, C=Calibration in process,
I=Invalid (calibration failed or sensor in failed state)

NOx Status

V=Valid, M=Maintenance Mode, C=Calibration in process,
I=Invalid (calibration failed or sensor in failed state)

Table 3-7. Measurement Log File Format

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Instruction Manual
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January 2002

Model MicroCEM
e.

Calibration Log File Format
The log file contains data in a flat, ASCII, CSV file. The following are the

Name
Date/Time
Zero Time
Mid Time
Span Time
Purge Time
Finish Time
O2 Measured Zero
O2 Expected Zero
O2 Zero Drift
O2 Measured Mid Span
O2 Expected Mid Span
O2 Mid Drift
O2 Measured Span
O2 Expected Span
O2 Span Drift
CO Measured Zero
CO Expected Zero
CO Zero Drift
CO Measured Mid Span
CO Expected Mid Span
CO Mid Span Drift
CO Measured Span
CO Expected Span
CO Span Drift
NOx Measured Zero
NOx Expected Zero
NOx Zero Drift
NOx Measured Mid Span
NOx Expected Mid Span
NOx Mid Span Drift
NOx Measured span
NOx Expected span
NOx Span Drift

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).

Description
Month-day-year Hours:Minutes:Seconds
Time that Zero span started, Hours:Minutes:Seconds
Time That Mid span started, Hours:Minutes:Seconds
Time that span started, Hours:Minutes:Seconds
Time that the final purge started,
Hours:Minutes:Seconds
Time that the final purge finishes
Measured percent O2 for Zero phase of calibration
Expected percent O2 for Zero phase of calibration
Percent drift of O2 zero calibration
Measured percent O2 for Mid span phase of calibration
Expected percent O2 for Mid span phase of calibration
Percent drift of O2 mid calibration.
Measured percent O2 for Span phase of calibration
Expected percent O2 for Span phase of calibration
Percent drift of O2 span calibration

Measured ppm NOx for zero phase of calibration
Expected ppm NOx for zero phase of calibration
Measured ppm NOx for mid span phase of calibration
Measured ppm NOx for mid span phase of calibration
Measured ppm NOx for span phase of calibration
Measured ppm NOx for span phase of calibration

Example
3-7-2001 10:24:57
10:25:30
10:27:30
10:28:30
10:30:30
10:31:00
0.0
0.0
0.0
10.1
10.0
-0.4
20.2
20.3
0.4
1
0
0.3
23
24
-0.3
45
45
0
15
15
0
30
30
0
59
59
0

Table 3-8. Calibration Log File Format

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A Division of Emerson Process Management

Operation

3-19

Instruction Manual
748467-A
January 2002

Model MicroCEM

Alarm Log File Format
The log file contains data in a flat, ASCII, CSV file. The following are the
fields of the file, in order of occurrence.

Name
Date/Time
Fault Level
Fault Type

Fault Description

The days or months maintained in the
Alarm Log depends on how often trouble conditions are recorded. If there
are rarely alarm conditions recorded,
there is enough space for many years
of alarm logs to be recorded.

Description
Month-day-year Hours:Minutes:Seconds
1=informational, 2=warning, 3=critical
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
ASCII string describing fault. Up to 200 characters.

Example
3-7-2001 10:24:57
3
2

CO Calibration Failed

** - Alarm is not implemented in this version of software or reserved for future use.

Table 3-9. Alarm Log File Format

3-20

Operation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM

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.

3-7 VIEW DATA LOGS
View Data Logs will start Internet Explorer
and display the Emissions page of the Mi-

If Most Recent is selected, the
month day and hour do not
need to be selected.

Select 1 min., 15 min., 1 hour
or 24 hour averages.

Select the ending hour to view
(applicable only to 1- minute
averages)

Note the page header was scrolled out of view to show all the selection
options, but it can be seen in Figure 3-19.

Figure 3-18. View Data Logs

Average Period
1 Minute
15 Minutes
1 Hour
12 Hours
24 Hours

Time Range Displayed
1 Hour
1 Day
3 Days
1 Month
3 Months

Table 3-10. Average Period Selection

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A Division of Emerson Process Management

Operation

3-21

Instruction Manual
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January 2002

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.

The Emission Data-Logs
data is shown here.
Alarms and Calibration data
may also be viewed.

A Date is shown for 1 min or 15
minute averages. A date range
is shown for 1 hour or greater
averages.

Figure 3-19. View Data Logs Table

3-22

Operation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

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 installed 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 realtime display of the emission values and
emission statuses. The display is refreshed every 10 seconds.

Figure 3-20. Real-Time Web Page

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Operation

3-23

Instruction Manual
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January 2002

Model MicroCEM

Emissions Page
The Emissions Page can be used to
view emission history in a tabular webpage 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 displayed (as shown in Figure 3-19) after
selecting the Date and Average Period

and pressing the Display button. If desired 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.

If Most Recent is selected, the
month day and hour do not
need to be selected.

Select the ending hour to
view (applicable only to 1
minute averages)

Select 1 min., 15 min., 1 hour
or 24 hour averages.

Figure 3-21. Emissions Selection

Figure 3-22. Emissions Table

3-24

Operation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM

Figure 3-23. Calibration Table

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Operation

3-25

Instruction Manual
748467-A
January 2002

Model MicroCEM

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 “Download Emissions by Date Range” selection is available. Once the selection is

made, press the Download button to
start the HTTP download. The MicroCEM 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 exceeded, a message will be displayed
that reads “The simultaneous download
limit has been reached, please try
again later”.

Download Emissions
Log, Calibration Log or
Alarm Log

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

Figure 3-24. Download Web Page

3-26

Operation

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
3-9 VIEWING MicroCEM DATA WITH MS EXCEL
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 downloaded 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 MicroCEM 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 address 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

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A Division of Emerson Process Management

Operation

3-27

Instruction Manual
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January 2002

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 calibration process was initiated.

Figure 3-26. Auto Calibration

3-28

Operation

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Instruction Manual
748467-A
January 2002

Model MicroCEM
SECTION 4
SOFTWARE

computer. It will not normally run locally since
there is no input device or display connected
to the MicroCEM processor.

4-1 OVERVIEW
The MicroCEM Software includes 3 main
components. One component is the MicroCEM control software that interfaces with the
instrumentation and records the emissions
measurements. A second component is the
User Interface Software that provides realtime 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.

4-3 MicroCEM WEB SERVER SOFTWARE
Web Browser: Internet Explorer 4.0 or Netscape 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 information 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.

4-2 MicroCEM USER INTERFACE SOFTWARE
Hardware Platform: Pocket PC
The MicroCEM User Interface Software communicates with the MicroCEM Control Software using TCP/IP. It may run locally on the
MicroCEM computer or remotely on a Pocket
PC with a RS232 connection to the MicroCEM

uCEM User
Interface

uCEM Computer
HTML (TCP/
IP)
Shared
Memory
Segment

uCEM
Control
Software

Serial
Cable

Web
Server
Script

TCP/IP

Pocket PC

Device Drivers
As an option a
Wireless Network
may be used.

Data-Log
& Config
Files

HTML

Workstation
Ethernet,
Modem or serial

Digital and
Analog IO

Sensors and
Control Circuitry

Figure 4-1. MicroCEM Software Block Diagram

Rosemount Analytical Inc.

A Division of Emerson Process Management

Software

4-1

Instruction Manual
748467-A
January 2002

Model MicroCEM

4-4 SOFTWARE DEVELOPMENT MANAGEMENT
Microsoft Visual SourceSafe is used for version control of all of the MicroCEM software.
Compuware’s Track Record is used for
change request management and defect
tracking.

4-2

Software

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

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 qualified service personnel.

WARNING
PARTS INTEGRITY
Tampering with or unauthorized substitution of components may adversely affect
safety of this product. Use only factoryapproved components for repair.

Rosemount Analytical Inc.

A Division of Emerson Process Management

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 contaminates such as ammonia reacting with the high
ozone levels and NO components. To eliminate the contaminates, the sampling system
should be reworked or a preventive maintenance program developed (if dropout is not
excessive). Another source of crystalline formation is contaminated air.
Several components may require replacement. These are discussed in the following
sections.

Maintenance and Service

5-1

Instruction Manual
748467-A
January 2002

Model MicroCEM
Converter
(Figure 5-2)

NDIR Detector
Ozone Generator

Valve Manifold
Assembly
Thermoelectric Cooler

Paramagnetic
Detector

Power Relay
Regulator

3-Way Valve

Chemiluminescense
Detector (Figure 5-4)
Power Supply Assembly
Transistor

Fan

Personality Modules
(Figure 5-3)

Figure 5-1. MicroCEM Component Location

5-2

Maintenance and Service

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM

and remove the converter. Reassemble in reverse order, ensuring that the converter is oriented with the glass cloth at the bottom and
the sensor is oriented correctly inside the
heater jacket.

5-2 CONVERTER
To replace the converter or sensor, disconnect the two pneumatic tubes and two electrical connections. Unlace the heater blanket,

ASSEMBLED SIDE VIEW
Sensor
Heater
Jacket
655228

Converter
Tube 655227

Glass
Cloth

Wrap with
aluminum foil

Sensor
655282

Figure 5-2. Converter Assembly

Rosemount Analytical Inc.

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Maintenance and Service

5-3

Instruction Manual
748467-A
January 2002

Model MicroCEM

ality modules are installed on a custom backplane. See Figure 5-3.

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 reverse 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-

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 module.
Tag each cable and its location before disconnecting any wiring. This helps in reassembly.

EXIO

AUX

PDD

NDIR

PMD

Figure 5-3. Personality Modules and Backplane.

5-4

Maintenance and Service

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
5-5 CHEMILUMINESCENSE DETECTOR ASSEMBLY

NOTE
Component Positioning. The procedure described above is for the purpose of maintaining the relative
positions of windows and O-ring to the
Reaction Chamber during installation.

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 compound on optical surfaces. If this substance is removed during the
disassembly process, a zinc oxide-filled, silicone grease (e.g., Dow
Corning 340 or EG&G Wakefield Engineering's Series 120 Thermal Joint
Compound) be reapplied in the reassembly 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 Detector .
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 Reaction Chamber O-ring and window to be
removed from below.
Installation
To reinstall, hold the housing in the inverted 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.

Rosemount Analytical Inc.

A Division of Emerson Process Management

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 described above. Invert the housing to access 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 minimize the spread of the heatsink compound.
Remove the (2) screws holding the lower
section of the Detector Housing, then
slide the section along the cable and remove.
Remove the (2) screws holding the
socket, thermistor and photodiode in
place, being careful not to lose the washers that are used as shims.
Grasp the socket and photodiode base
while slowly rotating to separate the photodiode 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 remove 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 removed 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

Maintenance and Service

5-5

Instruction Manual
748467-A
January 2002

Model MicroCEM

position of the O-ring and window in the
upper compartment.

Replace the lower section of the housing,
then the bottom cover, insulator and
bracket with the shoulder washers and
screws.

The new photodiode should be slowly inserted 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.

Re-tighten the screws in the Reaction
Chamber (upper section). Replace the top
cap and its screws.
To reinstall in the Analyzer Module, reverse the procedure for removal as indicated above.

Sapphire
Window

Reaction
Chamber

Photodiode

Thermistor
Assembly

Sample

Ozone
Exhaust

Photodiode Socket
Assembly
Detector Mounting
Bracket

Figure 5-4. Chemiluminescense Detector Assembly

5-6

Maintenance and Service

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM

M3X0.5 x 25mm Screw (2)
3mm Spring Washer (2)
Detector Header
Heater*

Heater*
Retainer Gasket
Thermostat*

M3X0.5 x 16mm Screw (2)
3mm Spring Washer (2)

Reaction Chamber
O-Ring 854540

Tubing Cover

Sapphire Window
Cushioning Gasket

O-Ring 876478
Photodiode
Cable

Lower Cover
Photodiode Assembly
(see detail below)
M3X0.5
x 20mm
Screw (2)
(see detail
below)
3mm Spring Washer (2)

Insulator
(between Lower Cover
and Mounting Bracket)

Nylon Shoulder
Washers (3)
Detector Cover

M3X0.5 x 16mm
Screw (3)
Photodiode Case
Ground

*Heater/Thermostat Assembly 655235.

M3X0.5 x 16mm Screw (2)
3mm Spring Washer (2)

Photodiode
655258
Thermistor
655216

Thermistor Shim

Thermistor Spacer
No. 6 Flat Washer (2)

Photodiode Socket Assembly

Assembly of Photodiode

Figure 5-5. Chemiluminescense Detector Assembly – Exploded View

Rosemount Analytical Inc.

A Division of Emerson Process Management

Maintenance and Service

5-7

Instruction Manual
748467-A
January 2002

5-8

Maintenance and Service

Model MicroCEM

Rosemount Analytical Inc.

A Division of Emerson Process Management

Instruction Manual
748467-A
January 2002

Model MicroCEM
SECTION 6
TROUBLESHOOTING
6-1 TROUBLESHOOTING LEAKS
Liberally cover all fittings, seals, and other possible sources of leakage with a suitable leak test
liquid such as SNOOP (part 837801). Bubbling
or foaming indicates leakage. Checking for bubbles will locate most leaks but could miss some,
as some areas are inaccessible to the application of SNOOP. For positive assurance that
system is leak free, perform one of the tests
above.
NOTE:
Refer to Specification in Preface for maximum 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.

Rosemount Analytical Inc.

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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 following message:
Connection with uCEM lost, retrying…
A Cancel button will be displayed. The MicroCEM software will continue to attempt to reconnect 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 acknowledged. This provides both an output from
the MicroCEM box and an LED indication.

Troubleshooting

6-1

Instruction Manual
748467-A
January 2002

6-2

Troubleshooting

Model MicroCEM

Rosemount Analytical Inc.

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Instruction Manual
748467-A
January 2002

Model MicroCEM
SECTION 7
REPLACEMENT PARTS
1020839-100
1020840-100
1020841-101
1020842-100
1020843-100
1020869-100
1020973-100
1020987-100
42706504
42711801
634398
638614
655216
655250
655289
657716
657719
658157
659754
90003311
902124
905778
905779
905780
905871

PMD Module Assembly
NDIR Module Assembly
PDD Module Assembly
AUX Module Assembly
EXIO Module Assembly
Thermoelectric Cooler Assembly
Thermistor
Heater Assembly
Desiccant Bulbs
Electrical Cable
Capillary, Vent
Pressure Gauge
Thermistor Assembly
Converter Assembly
Restrictor, Bulkhead
Power Supply, Ozonator
Ozone Generator
Restrictor, Brass
Photodiode Detector
Paramagnetic Detector
Flowmeter
4-Port Manifold
2-Way Valve
3-Way Valve
Relay, Power 15A

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Replacement Parts

7-1

Instruction Manual
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January 2002

7-2

Replacement Parts

Model MicroCEM

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Instruction Manual
748467-A
January 2002

Model MicroCEM
SECTION 8
RETURN OF MATERIAL
8-1 RETURN OF MATERIAL
If factory repair of defective equipment is required, proceed as follows:
1. Secure a return authorization from a
Rosemount Analytical Inc. Sales Office or
Representative before returning the
equipment. Equipment must be returned
with complete identification in accordance
with Rosemount instructions or it will not
be accepted.
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 material 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 equipment 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 according to instructions provided in the Rosemount Return Authorization, prepaid, to:

If warranty service is expected, the defective
unit will be carefully inspected and tested at
the factory. If the failure was due to the conditions listed in the standard Rosemount warranty, the defective unit will be repaired or
replaced at Rosemount’s option, and an operating unit will be returned to the customer in
accordance with the shipping instructions furnished in the cover letter.
For equipment no longer under warranty, the
equipment will be repaired at the factory and
returned as directed by the purchase order
and shipping instructions.

8-2 CUSTOMER SERVICE
For order administration, replacement parts,
application assistance, on-site or factory repair, service or maintenance contract information, contact:
Rosemount Analytical Inc.
Process 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

Rosemount Analytical Inc.
Process Analytic Division
Customer Service Center
1-800-433-6076

Rosemount Analytical Inc.

A Division of Emerson Process Management

Return of Material

8-1

Instruction Manual
748467-A
January 2002

8-2

Return of Material

Model MicroCEM

Rosemount Analytical Inc.

A Division of Emerson Process Management

WARRANTY
Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from
defects in workmanship and material under normal use and service for a period of twelve (12)
months from the date of shipment by Seller. Consumables, glass electrodes, membranes, liquid
junctions, electrolyte, o-rings, etc., are warranted to be free from defects in workmanship and
material under normal use and service for a period of ninety (90) days from date of shipment by
Seller. Goods, part(s) and consumables proven by Seller to be defective in workmanship and/or
material shall be replaced or repaired, free of charge, F.O.B. Seller's factory provided that the
goods, part(s) or consumables are returned to Seller's designated factory, transportation charges
prepaid, within the twelve (12) month period of warranty in the case of goods and part(s), and in
the case of consumables, within the ninety (90) day period of warranty. This warranty shall be in
effect for replacement or repaired goods, part(s) and the remaining portion of the ninety (90) day
warranty in the case of consumables. A defect in goods, part(s) and consumables of the commercial unit shall not operate to condemn such commercial unit when such goods, part(s) and
consumables are capable of being renewed, repaired or replaced.
The Seller shall not be liable to the Buyer, or to any other person, for the loss or damage directly
or indirectly, arising from the use of the equipment or goods, from breach of any warranty, or from
any other cause. All other warranties, expressed or implied are hereby excluded.
IN CONSIDERATION OF THE HEREIN STATED PURCHASE PRICE OF THE GOODS,
SELLER GRANTS ONLY THE ABOVE STATED EXPRESS WARRANTY. NO OTHER WARRANTIES ARE GRANTED INCLUDING, BUT NOT LIMITED TO, EXPRESS AND IMPLIED
WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Limitations of Remedy. SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED BY DELAY IN PERFORMANCE. THE SOLE AND EXCLUSIVE REMEDY FOR BREACH OF WARRANTY SHALL BE LIMITED TO REPAIR OR REPLACEMENT UNDER THE STANDARD
WARRANTY CLAUSE. IN NO CASE, REGARDLESS OF THE FORM OF THE CAUSE OF ACTION, SHALL SELLER'S LIABILITY EXCEED THE PRICE TO BUYER OF THE SPECIFIC
GOODS MANUFACTURED BY SELLER GIVING RISE TO THE CAUSE OF ACTION. BUYER
AGREES THAT IN NO EVENT SHALL SELLER'S LIABILITY EXTEND TO INCLUDE INCIDENTAL OR CONSEQUENTIAL DAMAGES. CONSEQUENTIAL DAMAGES SHALL INCLUDE, BUT
ARE NOT LIMITED TO, LOSS OF ANTICIPATED PROFITS, LOSS OF USE, LOSS OF REVENUE, COST OF CAPITAL AND DAMAGE OR LOSS OF OTHER PROPERTY OR EQUIPMENT.
IN NO EVENT SHALL SELLER BE OBLIGATED TO INDEMNIFY BUYER IN ANY MANNER
NOR SHALL SELLER BE LIABLE FOR PROPERTY DAMAGE AND/OR THIRD PARTY CLAIMS
COVERED BY UMBRELLA INSURANCE AND/OR INDEMNITY COVERAGE PROVIDED TO
BUYER, ITS ASSIGNS, AND EACH SUCCESSOR INTEREST TO THE GOODS PROVIDED
HEREUNDER.
Force Majeure. Seller shall not be liable for failure to perform due to labor strikes or acts beyond
Seller's direct control.

Instruction Manual
748467-A
January 2002

Model MicroCEM

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

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

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MicroCEM PGA_Manual_MicroCEM_200201

fe5dadcf-d985-49e8-8450-63e5582a8d3b Emerson Camera Accessories MicroCEM User Guide |

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