Thermo Scientific 5028i User manual

Model 5028i
Instruction Manual
Continuous Particulate Monitor
CIC0001582 • April 2018

Model 5028i
Instruction Manual
Continuous Particulate Monitor
Part Number CIC0001582
8Apr2018

© 2016 ermo Fisher Scientic Inc. All rights reserved.
Specications, terms and pricing are subject to change. Not all products are available in all countries. Please
consult your local sales representative for details.
ermo Fisher Scientic
Air Quality Instruments
27 Forge Parkway
Franklin, MA 02038
1-508-520-0430
www.ermosher.com

Thermo Fisher Scientific WEEE Compliance
WEEE Compliance
is product is required to comply with the European Union’s Waste
Electrical & Electronic Equipment (WEEE) Directive 2012/19/EU. It
is marked with the following symbol:
ermo Fisher Scientic has contracted with one or more recycling/
disposal companies in each EU Member State, and this product
should be disposed of or recycled through them. Further information
on ermo Fisher Scientic’s compliance with these Directives, the
recyclers in your country, and information on ermo Fisher Scientic
products which may assist the detection of substances subject to the
RoHS Directive are available at: www.thermosher.com.

WEEE Compliance Thermo Fisher Scientific

Thermo Fisher Scientific Model 5028iInstruction Manual i
About This Manual
is manual provides information about installing, operating,
maintaining, and servicing the Model 5028i Continuous Particulate
Monitor. It also contains important alerts to ensure safe operation and
prevent equipment damage. e manual is organized into the following
chapters and appendices to provide direct access to specic operation
and service information.
l Chapter 1 “Introduction” provides an overview of product features,
describes the principle of operation, and lists the specications.
l Chapter 2 “Installation” describes how to unpack, setup, and startup
the instrument.
l Chapter 3 “Operation” describes the front panel display screens, the
front panel pushbuttons, and the menu-driven rmware.
l Chapter 4 “Calibration” provides the procedures for calibrating the
analyzer and describes the required equipment.
l Chapter 5 “Preventive Maintenance” provides maintenance
procedures to ensure reliable and consistent instrument operation.
l Chapter 6 “Troubleshooting” presents guidelines for diagnosing
analyzer failures, isolating faults, and includes recommended actions
for restoring proper operation.
l Chapter 7 “Servicing” presents safety alerts for technicians working
on the analyzer, step-by-step instructions for repairing and replacing
components, and a replacement parts list. It also includes contact
information for product support and technical information.
l Chapter 8 “System Description” describes the function and location
of the system components, provides an overview of the rmware
structure, and includes a description of the system electronics and
input/output connections.
l Chapter 9 “Optional Equipment” describes the optional equipment
that can be used with this analyzer.
l Appendix A “Warranty” is a copy of the warranty statement.
l Appendix B “C-Link Protocol Commands” provides a description of
the C-Link protocol commands that can be used to remotely control
an analyzer using a host device such as a PC or datalogger.

About This Manual
Safety
ii Model 5028iInstruction Manual Thermo Fisher Scientific
l Appendix C “MODBUS Protocol” provides a description of the
MODBUS Protocol Interface and is supported both over RS-
232/485 (RTU protocol) as well as TCP/IP over Ethernet.
l Appendix D “Gesytec (Bayern-Hessen) Protocol” provides a
description of the Gesytec (Bayern-Hessen or BH) Protocol
Interface and is supported both over RS-232/485 as well as TCP/IP
over Ethernet.
l Appendix E “ESM Protocol Commands” provides a description of
the ESM Protocol commands (from the prior FH62 platform) that
can be used to remotely control an analyzer using a host device such
as a PC or datalogger.
Review the following safety information carefully before using the
analyzer. is manual provides specic information on how to operate
the analyzer, however, if the analyzer is used in a manner not specied
by the manufacturer, the protection provided by the equipment may be
impaired.
is manual contains important information to alert you to potential
safety hazards and risks of equipment damage. Refer to the following
types of alerts you may see in this manual.
Safety and Equipment Damage Alert Descriptions
Alert Description
DANGER A hazard is present that could result in death or serious
personal injury if the warning is ignored. s
WARNING A hazard or unsafe practice could result in serious
personal injury if the warning is ignored. s
CAUTION A hazard or unsafe practice could result in minor to
moderate personal injury if the warning is ignored. s
Equipment Damage A hazard or unsafe practice could result in property
damage if the warning is ignored. s
Safety and Equipment Damage Alerts in this Manual
Alert Description
WARNING The Model 5028iis supplied with a three-wire grounded
power cord. Under no circumstances should this
grounding system be defeated. s
If the equipment is operated in a manner not specified
by the manufacturer, the protection provided by the
equipment may be impaired. s
The service procedures in this manual are restricted to
qualified service personnel only. s
Safety
Safety and Equipment
Damage Alerts

About This Manual
Safety and Equipment Damage Alerts
Thermo Fisher Scientific Model 5028iInstruction Manual iii
Alert Description
The detector assembly should be replaced by a qualified
technician knowledgeable in dealing with radiation
precautions. By removing the detector assembly, the C-14
radioactive source is partially exposed. Safety glasses
must be worn during this replacement procedure. The
amount of C-14 meets the USNRC regulations as an
exempt amount of radioactive source <100 μCi.
CAUTION The detector window is very fragile. Handle with great
care and do not wipe or touch the window. Furthermore,
do not touch the solder cable connection (electrode) with
your bare fingers. The oils from your skin can damage
the detector.
Safety glasses must be worn while replacing the
detector assembly.
If the LCD panel breaks, do not let the liquid crystal
contact your skin or clothes. If the liquid crystal contacts
your skin or clothes, wash it off immediately using soap
and water. s
Equipment Damage Do not attempt to lift the analyzer by the cover or other
external fittings. s
Some internal components can be damaged by small
amounts of static electricity. A properly grounded
antistatic wrist strap must be worn while handling any
internal component. s
Disconnect the serial cable before changing the RS-
232 and RS-485 selection to prevent damage to any
equipment currently connected to the analyzer. s
Do not use solvents or other cleaning products to clean
the outside case. s
Do not remove the LCD panel or frame from the LCD
module. s
The LCD polarizing plate is very fragile, handle it
carefully. s
Do not wipe the LCD polarizing plate with a dry cloth, as
it may easily scratch the plate. s
Do not use alcohol, acetone, MEK or other ketone based
or aromatic solvent to clean the LCD module, but rather
use a soft cloth moistened with a naphtha cleaning
solvent. s
Do not place the LCD module near organic solvents or
corrosive gases. s
Do not shake or jolt the LCD module. s

About This Manual
Electrical/Safety Certifications
iv Model 5028iInstruction Manual Thermo Fisher Scientific
e product has been tested and has been documented to be in
compliance with the following U.S. and Canadian safety standards:
UL61010-1:2012 Ed.3+R:15 Jul 2015
CSA C22.2 No.61010-1:2012 Ed.3+G1
IEC61010-1:2010
EN 61010-1:2010
EN 61010-2-081:2015
UL 61010-2-081:2015 Ed.2
CSA C22.2 No.61010-2-081 Issued: 2004/07/01 (R2014)
IEC 61010-2-081:2015
EN61326-1:2013
CFR 47 Part 15:2015
ANSI C63.4:2014
ICES-003 Issue 6(2016)
ermo Fisher Scientic certies that this product operates in
compliance with the EC Directive 2014/30/EU in reference to
electrical emissions and immunity. Specically, the equipment meets
the requirements of EN 61326-1:2013 for Immunity and Emissions. In
addition, the hardware has been tested for personal or re safety hazards
in accordance with EN 61010-1:2010 (Safety) in fulllment of EC
Directive 2014/35/EU.
Model 5028i Continuous Particulate Monitor for PM10 Automated
Equivalent Method: EQPM-1102-150; for PM2.5 Automated
Equivalent Method: EQPM-0609-183.
“Model 5028i Continuous Particulate Monitor” congured with two
10 micron size selective inlets, one PM2.5 BGI Inc. Very Sharp Cut
Cyclone (VSCC™) particle size separator and DHS, operated with a
total actual ow of 16.67 L/min for each channel. and according to
the ermo Scientic 5028iContinuous Ambient Particulate Monitor
operating manual.
Changes or modications to this unit not expressly approved by the
party responsible for compliance could void the user’s authority to
operate the equipment.
Note is equipment has been tested and found to comply within
the limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. ese limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial
environment. is equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area
is likely to cause harmful interference, in which case the user will be
Electrical/Safety
Certifications
FEM Statement
FCC Compliance

About This Manual
WEEE Symbol
Thermo Fisher Scientific Model 5028iInstruction Manual v
required to correct the interference at his or her own expense. s
e following symbol and description identify the WEEE marking used
on the instrument and in the associated documentation.
Symbol Description
Marking of electrical and electronic equipment which applies to waste
electrical and electronic equipment falling under the Directive 2012/19/EU
(WEEE) and the equipment that has been put on the market after 13 August
2005. s
Service is available from exclusive distributors worldwide. Contact
one of the phone numbers below for product support and technical
information or visit us on the web at www.ermosher.com
1-866-282-0430 Toll Free
1-508-520-0430 International
WEEE Symbol
Where to Get Help

About This Manual
WEEE Symbol
vi Model 5028iInstruction Manual Thermo Fisher Scientific

Thermo Fisher Scientific Model 5028iInstruction Manual vii
Contents
Chapter 1 Introduction................................................................................................1-1
Principle of Operation.................................................................. 1-3
Specications................................................................................ 1-7
Chapter 2 Installation .................................................................................................2-1
Packaging and Transport............................................................... 2-1
Lifting .......................................................................................... 2-2
Unpacking and Inspection............................................................ 2-2
Acceptance Testing and Startup Procedures .................................. 2-2
Acceptance Test ......................................................................... 2-3
One-Point Temperature Verication .......................................... 2-5
One-Point RH Sensor Verication............................................. 2-6
One-Point Barometric Pressure Verication ............................... 2-6
One-Point Volumetric Flow Rate Verication............................ 2-6
Setup............................................................................................ 2-7
Inlet System............................................................................... 2-7
Heater ....................................................................................... 2-8
Sample Tube Extension Lengths ................................................ 2-9
Rack Mounting Option........................................................... 2-10
Monitor Installation ................................................................ 2-10
Connecting External Devices...................................................... 2-12
Terminal Board PCB Assemblies.............................................. 2-12
I/O Terminal Board .............................................................. 2-12
D/O Terminal Board ............................................................ 2-14
25-Pin Terminal Board ......................................................... 2-15
Power Connections.................................................................. 2-17
Startup ....................................................................................... 2-17
Data Content ............................................................................. 2-18
Shutdown................................................................................... 2-18
Important Tips ........................................................................... 2-18
Chapter 3 Operation....................................................................................................3-1
Display......................................................................................... 3-1
Pushbuttons ................................................................................. 3-2
Soft Keys ................................................................................... 3-3
Alphanumeric Entry Screen....................................................... 3-4
Firmware Overview ...................................................................... 3-4
Power-Up Screen ....................................................................... 3-6
Run Screens............................................................................... 3-6
Ambient Conditions Run Screen ............................................ 3-7
Sample Conditions Run Screen .............................................. 3-8

Contents
viii Model 5028iInstruction Manual Thermo Fisher Scientific
Mass Sensor Data Run Screen................................................. 3-8
Main Menu ............................................................................... 3-8
Range Menu................................................................................. 3-9
Concentration Units.................................................................. 3-9
Range ...................................................................................... 3-10
Set Custom Ranges.................................................................. 3-11
Custom Ranges..................................................................... 3-12
Integration Time ........................................................................ 3-12
24-Hour Average ........................................................................ 3-12
24-Hour Average Start Time.................................................... 3-13
Calibration Factors Menu........................................................... 3-13
PM/PMbBackground.............................................................. 3-13
PM/PMbCoecient................................................................ 3-14
Instrument Controls Menu ........................................................ 3-14
Measurement Mode................................................................. 3-15
Set Flow/Pump........................................................................ 3-15
Flow ..................................................................................... 3-15
Pump Value .......................................................................... 3-16
Set Heater................................................................................ 3-16
HEATERS............................................................................ 3-16
RH reshold....................................................................... 3-17
Temperature reshold......................................................... 3-17
Filter Tape Control .................................................................. 3-17
Manual ................................................................................. 3-18
Mass Limit............................................................................ 3-18
Next Time ............................................................................ 3-19
Period ................................................................................... 3-19
Counter................................................................................ 3-20
Detectors................................................................................. 3-20
Volumetric Conditions ............................................................ 3-20
Temperature Compensation.................................................. 3-21
Standard ............................................................................... 3-21
Pressure Compensation......................................................... 3-21
Standard ............................................................................... 3-22
Datalogging Settings................................................................ 3-22
Select Srec/Lrec..................................................................... 3-23
View Logged Data ................................................................ 3-23
Number of Records............................................................... 3-23
Date and Time...................................................................... 3-24
Erase Log.............................................................................. 3-24
Select Content ...................................................................... 3-24
Choose Field Data ................................................................ 3-25
Concentrations ..................................................................... 3-25
Other Measurements ............................................................ 3-25
Analog Inputs ....................................................................... 3-28
Commit Content.................................................................. 3-28
Reset to Default Content...................................................... 3-29
Congure Datalogging ......................................................... 3-29

Contents
Thermo Fisher Scientific Model 5028iInstruction Manual ix
Logging Period Min.............................................................. 3-29
Memory Allocation Percent .................................................. 3-30
Data Treatment..................................................................... 3-30
Flag Status Data.................................................................... 3-31
Communication Settings......................................................... 3-31
Serial Settings ....................................................................... 3-31
Baud Rate............................................................................. 3-31
Data Bits............................................................................... 3-32
Parity .................................................................................... 3-32
Stop Bits ............................................................................... 3-32
RS-232/RS-485 Selection ..................................................... 3-33
Instrument ID ...................................................................... 3-33
Gesytec Serial Number ......................................................... 3-33
Communication Protocol ..................................................... 3-34
Streaming Data Conguration.............................................. 3-34
Streaming Data Interval........................................................ 3-34
Choose Stream Data ............................................................. 3-35
Concentrations ..................................................................... 3-35
Other Measurements ............................................................ 3-35
Analog Inputs ....................................................................... 3-36
TCP/IP Settings ................................................................... 3-37
Use DHCP........................................................................... 3-37
IP Address............................................................................. 3-37
Netmask ............................................................................... 3-38
Default Gateway................................................................... 3-38
Host Name ........................................................................... 3-38
Network Time Protocol Server.............................................. 3-39
I/O Conguration................................................................... 3-39
Output Relay Settings........................................................... 3-39
Logic State............................................................................ 3-40
Instrument State ................................................................... 3-40
Alarms .................................................................................. 3-40
Non-Alarm ........................................................................... 3-41
Digital Input Settings ........................................................... 3-41
Logic State............................................................................ 3-42
Instrument Action ................................................................ 3-42
Analog Output Conguration (Select Channel).................... 3-43
Allow Over/Under Range ..................................................... 3-43
Analog Output Conguration (Select Action)....................... 3-44
Select Range ......................................................................... 3-44
Minimum and Maximum Value ........................................... 3-45
Choose Signal to Output...................................................... 3-46
Analog Input Conguration ................................................. 3-47
Descriptor............................................................................. 3-48
Units..................................................................................... 3-48
Decimal Places...................................................................... 3-48
Number of Table Points........................................................ 3-49
Table Points .......................................................................... 3-49

Contents
xModel 5028iInstruction Manual Thermo Fisher Scientific
Volts ..................................................................................... 3-49
User Value ............................................................................ 3-50
Screen Contrast ....................................................................... 3-50
Service Mode........................................................................... 3-51
Date/Time............................................................................... 3-51
Timezone ................................................................................ 3-51
Diagnostics Menu ...................................................................... 3-52
Program Versions..................................................................... 3-52
Voltages ................................................................................... 3-53
Motherboard Voltages........................................................... 3-53
Interface Board Voltages........................................................ 3-53
I/O Board Voltages ............................................................... 3-53
Detector Board Voltages ....................................................... 3-54
RH/Temperature ..................................................................... 3-54
Pressure/Vacuum ..................................................................... 3-54
Flow ........................................................................................ 3-55
Detector Status ........................................................................ 3-55
CRn ........................................................................................ 3-55
Analog Input Readings ............................................................ 3-56
Analog Input Voltages.............................................................. 3-56
Digital Inputs .......................................................................... 3-56
Relay States.............................................................................. 3-57
Test Analog Outputs................................................................ 3-57
Set Analog Outputs .............................................................. 3-57
Instrument Conguration ....................................................... 3-58
Contact Information ............................................................... 3-58
Alarms Menu.............................................................................. 3-58
Instrument Alarms................................................................... 3-59
Filter Tape Counter............................................................... 3-59
Max Filter Tape Counter....................................................... 3-60
Detector Alarms ...................................................................... 3-60
Min and Max Alpha Alarms.................................................. 3-60
Min and Max Beta Alarms.................................................... 3-61
RH/Temperature Alarms ......................................................... 3-61
Ambient RH......................................................................... 3-61
Min and Max Ambient RH Limits ....................................... 3-62
Sample RH/Sample RH B .................................................... 3-62
Min and Max Sample RH Limits.......................................... 3-62
Ambient Temperature........................................................... 3-63
Min and Max Ambient Temperature Limits.......................... 3-63
Flow Temperature................................................................. 3-63
Min and Max Flow Temperature Limits................................ 3-64
Board Temperature ............................................................... 3-64
Min and Max Board Temperature Limits.............................. 3-64
Pressure/Vacuum Alarms ......................................................... 3-65
Barometric Pressure .............................................................. 3-65
Min and Max Barometric Pressure Limits ............................. 3-65
Vacuum ................................................................................ 3-66

Contents
Thermo Fisher Scientific Model 5028iInstruction Manual xi
Min and Max Vacuum Limits............................................... 3-66
Flow ..................................................................................... 3-67
Min and Max Flow Limits .................................................... 3-67
Flow Alarms ............................................................................ 3-67
Flow ..................................................................................... 3-68
Min and Max Flow Limits .................................................... 3-68
Concentration Alarms ............................................................. 3-68
Average PM/PMb.................................................................. 3-69
Min and Max Average PM/PMb Concentration Limits ......... 3-69
Instant PM/Instant PMb....................................................... 3-69
Min and Max Instant PM Concentration Limits .................. 3-70
Service Menu.............................................................................. 3-70
RH/Temperature Calibration .................................................. 3-71
Ambient Temperature........................................................... 3-71
Flow/Flow B Temperature..................................................... 3-71
Ambient Relative Humidity.................................................. 3-72
Pressure/Vacuum Calibration................................................... 3-72
Barometer Pressure Calibration............................................. 3-72
Calibrate Barometer Pressure Span........................................ 3-73
Restore Default Calibration .................................................. 3-73
Vacuum/Flow or Vacuum/ Flow B Calibration ..................... 3-73
Calibrate Vacuum/Flow Oset.............................................. 3-74
Calibrate Vacuum Pressure Span ........................................... 3-74
Calibrate Flow Pressure Span ................................................ 3-74
Restore Default Calibration .................................................. 3-75
Flow Calibration...................................................................... 3-75
Auto Flow Calibration .......................................................... 3-75
Manual Flow Calibration...................................................... 3-76
Mass Calibration ..................................................................... 3-76
ermal Mass Coecient ..................................................... 3-76
Vacuum Mass Coecient ..................................................... 3-77
Barometer Mass Coecient .................................................. 3-77
Mass Coecient ................................................................... 3-77
Auto Mass Coecient........................................................... 3-78
Manual Mass Coecient ...................................................... 3-78
Alpha Eciency Coecient.................................................. 3-78
Detector Calibration................................................................ 3-79
Auto Detector Calibration .................................................... 3-79
Manual Detector Calibration................................................ 3-79
Beta/Ref/Alpha Counts......................................................... 3-80
High Voltage......................................................................... 3-80
Beta Ref reshold ............................................................... 3-80
Alpha reshold ................................................................... 3-81
Analog Output Calibration...................................................... 3-81
Analog Output Calibrate Zero.............................................. 3-82
Analog Output Calibrate Full-Scale ...................................... 3-82
Analog Input Calibration......................................................... 3-82
Analog Input Calibrate Zero................................................. 3-83

Contents
xii Model 5028iInstruction Manual Thermo Fisher Scientific
Analog Input Calibrate Full-Scale ......................................... 3-83
Language ................................................................................. 3-83
Display Pixel Test..................................................................... 3-84
Restore User Defaults .............................................................. 3-84
Restore Factory Defaults.......................................................... 3-84
Password Menu .......................................................................... 3-85
Set Password............................................................................ 3-85
Lock Instrument...................................................................... 3-85
Lock/Unlock and Local/Remote Operation .......................... 3-86
Change Password..................................................................... 3-86
Remove Password .................................................................... 3-86
Unlock Instrument .................................................................. 3-87
Chapter 4 Calibration..................................................................................................4-1
Frequency of Calibration.............................................................. 4-1
Equipment Required .................................................................... 4-1
Pre-Calibration............................................................................. 4-2
Calibration Procedure................................................................... 4-2
RH/Temperature Calibration .................................................... 4-2
Ambient Temperature............................................................. 4-3
Ambient Relative Humidity.................................................... 4-3
Flow/Flow B Temperature....................................................... 4-3
Pressure/Vacuum Calibration..................................................... 4-4
Barometer Pressure Calibration............................................... 4-4
Calibrate Vacuum/Flow Oset................................................ 4-4
Calibrate Vacuum Pressure Span ............................................. 4-5
Calibrate Flow Pressure Span .................................................. 4-5
Flow Calibration........................................................................ 4-6
Auto Flow Calibration ............................................................ 4-6
Mass Calibration ....................................................................... 4-6
Mass Coecient ..................................................................... 4-8
Auto Mass Coecient............................................................. 4-8
Detector Calibration................................................................ 4-10
Auto Detector Calibration .................................................... 4-10
Chapter 5 Preventive Maintenance .........................................................................5-1
Safety Precautions......................................................................... 5-1
Replacement Parts ........................................................................ 5-2
Cleaning the Outside Case ........................................................... 5-2
Cleaning the Inlets ....................................................................... 5-2
U.S. EPA PM10 Inlet.................................................................. 5-2
European PM10/PM2.5 Inlet........................................................ 5-3
Cyclone Maintenance ................................................................ 5-4
Heater and Sample Tube............................................................ 5-5
Weather Proong....................................................................... 5-5
Fan Filter Inspection and Cleaning............................................... 5-5
Pump Rebuilding ......................................................................... 5-6

Contents
Thermo Fisher Scientific Model 5028iInstruction Manual xiii
Leak Test ...................................................................................... 5-6
Filter Tape Replacement ............................................................... 5-6
Greasing the Cam......................................................................... 5-8
Chapter 6 Troubleshooting.........................................................................................6-1
Safety Precautions......................................................................... 6-1
Troubleshooting Guides ............................................................... 6-1
Board-Level Connection Diagrams............................................... 6-6
Connector Pin Descriptions ......................................................... 6-7
Service Locations........................................................................ 6-22
Chapter 7 Servicing ....................................................................................................7-1
Safety Precautions......................................................................... 7-3
Firmware Updates ........................................................................ 7-4
Accessing the Service Mode .......................................................... 7-4
Replacement Parts List ................................................................. 7-5
Cable List..................................................................................... 7-6
External Device Connection Components.................................... 7-7
Removing the Measurement Case Assembly and Rear Panel ......... 7-9
Fuse Replacement....................................................................... 7-10
Fan/Filter Replacement............................................................... 7-10
Detector Amplier Assembly Replacement................................. 7-11
Detector Amplier Board Calibration ........................................ 7-12
External Pump Replacement....................................................... 7-13
Pressure Board Replacement....................................................... 7-14
Pressure Board Calibration ......................................................... 7-17
Analog Output Testing............................................................... 7-18
Analog Output Calibration ........................................................ 7-20
Analog Input Calibration ........................................................... 7-21
Calibrating the Input Channels to Zero Volts.......................... 7-21
Calibrating the Input Channels to Full-Scale........................... 7-21
emistor Replacement.............................................................. 7-22
I/O Expansion Board (Optional) Replacement........................... 7-23
Digital Output Board Replacement............................................ 7-24
Motherboard Replacement ......................................................... 7-25
Measurement Interface Board Replacement................................ 7-25
Photo Interrupt Board Replacement........................................... 7-26
Proportional Valve Replacement................................................. 7-27
Detector Assembly Replacement................................................. 7-28
Flow RTD Replacement............................................................. 7-29
Transformer Replacement........................................................... 7-30
Radius Tube Replacement........................................................... 7-31
Ambient RH/Temp Replacement ............................................... 7-32
Front Panel Board Replacement.................................................. 7-33
LCD Module Replacement ........................................................ 7-34
Service Locations........................................................................ 7-35

Contents
xiv Model 5028iInstruction Manual Thermo Fisher Scientific
Chapter 8 System Description ..................................................................................8-1
Hardware ..................................................................................... 8-1
Measurement Head ................................................................... 8-3
Detector Amplier..................................................................... 8-3
Cam Photo Interrupt Board ...................................................... 8-3
Counter Wheel Interrupt Board Assembly................................. 8-3
Proportional Valve ..................................................................... 8-3
3-way Valve ............................................................................... 8-3
Cam Motor ............................................................................... 8-3
Tape Motor ............................................................................... 8-3
Pressure Board ........................................................................... 8-4
Battery Board ............................................................................ 8-4
Firmware ...................................................................................... 8-5
Instrument Control ................................................................... 8-5
Monitoring Signals .................................................................... 8-5
Output Communication ........................................................... 8-5
Electronics.................................................................................... 8-6
Motherboard ............................................................................. 8-6
Measurement Interface Board.................................................... 8-6
Measurement Interface Board Connectors .............................. 8-6
Flow Sensor System ................................................................... 8-7
Pressure Sensor Assembly........................................................... 8-7
Detector Amplier Assembly..................................................... 8-7
Digital Output Board ................................................................ 8-7
I/O Expansion Board (Optional)............................................... 8-8
Front Panel Connector Board .................................................... 8-8
I/O Components.......................................................................... 8-8
Analog Voltage Outputs............................................................. 8-8
Analog Current Outputs (Optional).......................................... 8-9
Analog Voltage Inputs (Optional).............................................. 8-9
Digital Relay Outputs................................................................ 8-9
Digital Inputs ............................................................................ 8-9
Serial Ports............................................................................... 8-10
RS-232 Connection................................................................. 8-10
RS-485 Connection................................................................. 8-11
Ethernet Connection ............................................................... 8-11
External Accessory Connector ................................................. 8-11
Chapter 9 Optional Equipment ..................................................................................9-1
Inlet Assemblies............................................................................ 9-1
Sampling Tube Extensions............................................................ 9-1
I/O Expansion Board Assembly.................................................... 9-1
25 Pin Terminal Board Assembly.................................................. 9-1
Terminal Block and Cable Kits..................................................... 9-2
Cables .......................................................................................... 9-2
Mounting Options ....................................................................... 9-3
Roof Flange Assembly .................................................................. 9-5