Thermo Scientific 49i User manual

Model 49i
Instruction Manual
UV Photometric O3Analyzer
Part number 102434-00
10Jan2008

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Thermo Fisher Scientific
Air Quality Instruments
27 Forge Parkway
Franklin, MA 02038
1-508-520-0430
www.thermo.com/aqi

Thermo Fisher Scientific WEEE Compliance
WEEE Compliance
This product is required to comply with the European Union’s Waste
Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is
marked with the following symbol:
Thermo Fisher Scientific 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 Thermo Fisher
Scientific’s compliance with these Directives, the recyclers in your country,
and information on Thermo Fisher Scientific products which may assist the
detection of substances subject to the RoHS Directive are available at:
www.thermo.com/WEEERoHS.

Thermo Fisher Scientific Equivalent Method Designation
Equivalent Method Designation
The Thermo Scientific Model 49iis designated by the United States
Environmental Protection Agency (USEPA) as an Equivalent Method for
the measurement of ambient concentrations of ozone pursuant with the
requirements defined in the Code of Federal Regulations, Title 40, Part 53.
Designated Equivalent Method Number: EQOA-0880-047
EPA Designation Date: August 27, 1980 (amended for Model 49i)
The Model 49imeets EPA designation requirements when operated as
follows:
With or without the following options:
Range 50 to 1000 ppb
Averaging Time 10 to 300 seconds
Temperature Range 20 to 30 °C
Line Voltage 90 to 110 Vac @50/60 Hertz
105 to 125 Vac @50/60 Hertz
210 to 250 Vac @50/60 Hertz
Pressure Compensation ON or OFF
Temperature Compensation ON or OFF
Flow Rate 1 to 3 LPM
RS-232/RS-485 Interface
Teflon Particulate Filter
Rack Mounts
Internal Ozonator with Remote Activation
Internal Zero Air Scrubber
I/O Expansion Board

Thermo Fisher Scientific Model 49iInstruction Manual vii
Contents
Chapter 1 Introduction......................................................................................1-1
Principle of Operation ............................................................1-2
Specifications ..........................................................................1-3
Chapter 2 Installation .......................................................................................2-1
Lifting.....................................................................................2-1
Unpacking and Inspection ......................................................2-1
Setup Procedure......................................................................2-3
Connecting External Devices ..................................................2-5
Terminal Board PCB Assemblies..........................................2-5
Startup ....................................................................................2-9
Chapter 3 Operation ..........................................................................................3-1
Display....................................................................................3-2
Pushbuttons............................................................................3-3
Soft Keys..............................................................................3-4
Software Overview ..................................................................3-4
Power-Up Screen .................................................................3-6
Run Screen...........................................................................3-6
Main Menu..........................................................................3-7
Range Menu ...........................................................................3-8
Single Range Mode ..............................................................3-8
Dual Range Mode..............................................................3-10
Auto Range Mode..............................................................3-11
Gas Units...........................................................................3-14
O3Range...........................................................................3-14
Set Custom Ranges ............................................................3-16
Averaging Time.....................................................................3-17
Calibration Factors Menu .....................................................3-18
O3Background..................................................................3-18
O3Span Coefficient...........................................................3-20
Calibration Menu .................................................................3-21
Calibrate Zero....................................................................3-22
Calibrate O3Coefficient ....................................................3-22
Zero/Span Check ...............................................................3-23

Contents
viii Model 49iInstruction Manual Thermo Fisher Scientific
Instrument Controls Menu ...................................................3-27
Custom Levels....................................................................3-27
Pump .................................................................................3-28
Ozonator Solenoid .............................................................3-29
Cycle Time ........................................................................3-29
Temperature Compensation...............................................3-30
Pressure Compensation ......................................................3-30
Datalogging Settings ..........................................................3-31
Communication Settings....................................................3-41
I/O Configuration..............................................................3-49
Screen Contrast..................................................................3-62
Service Mode .....................................................................3-63
Date/Time .........................................................................3-63
Diagnostics Menu .................................................................3-64
Program Version ................................................................3-64
Voltages .............................................................................3-65
Temperatures .....................................................................3-67
Pressure..............................................................................3-67
Flows .................................................................................3-67
Cell A/B O3.......................................................................3-68
Intensities...........................................................................3-68
Analog Input Readings.......................................................3-69
Analog Input Voltages........................................................3-69
Digital Inputs.....................................................................3-69
Relay States ........................................................................3-70
Test Analog Outputs..........................................................3-70
Instrument Configuration..................................................3-71
Contact Information..........................................................3-72
Alarms Menu ........................................................................3-72
O3Lamp Temperature.......................................................3-73
Lamp Temperature ............................................................3-74
Bench Temperature............................................................3-75
Pressure..............................................................................3-76
Flow A and B .....................................................................3-77
Intensity A and B ...............................................................3-78
Zero and Span Check.........................................................3-79
Zero and Span Auto Calibration ........................................3-80
Ozonator Level 1-5 Check .................................................3-80
O3Concentration ..............................................................3-81
Service Menu ........................................................................3-83
Pressure Check...................................................................3-83
Lamp Setting......................................................................3-85
Detector Calibration ..........................................................3-86
Intensity Check..................................................................3-86

Contents
Thermo Fisher Scientific Model 49iInstruction Manual ix
Range Mode Select................................................................3-87
Pressure Calibration ...........................................................3-88
Flow A and B Calibration ..................................................3-90
Temperature Calibration....................................................3-92
Analog Output Calibration ................................................3-93
Analog Input Calibration ...................................................3-94
Dilution Ratio....................................................................3-96
Display Pixel Test ..............................................................3-96
Restore User Defaults.........................................................3-97
Password Menu.....................................................................3-97
Set Password ......................................................................3-98
Lock Instrument ................................................................3-98
Change Password ...............................................................3-99
Remove Password...............................................................3-99
Unlock Instrument ..........................................................3-100
Chapter 4 Calibration........................................................................................4-1
Equipment Required...............................................................4-1
Zero Air Generator ..............................................................4-1
Calibration Photometer System............................................4-2
Instrument Preparation ...........................................................4-3
Calibration Photometer System Preparation............................4-3
System Check.......................................................................4-3
Ozone Loss Test...................................................................4-4
Linearity Check....................................................................4-5
Intercomparability Test........................................................4-7
Calibration Procedure .............................................................4-8
Connect Instrument.............................................................4-9
Zero Adjust..........................................................................4-9
Span Adjust........................................................................4-10
Additional Concentration Standards ..................................4-10
Calibration Curve ..............................................................4-11
Periodic Zero and Span Checks.............................................4-11
Internal Ozonator Adjustment (Option) ...............................4-13
Chapter 5 Preventive Maintenance ...............................................................5-1
Safety Precautions ...................................................................5-2
Replacement Parts...................................................................5-2
Outside Case Cleaning............................................................5-2
Optical Bench Cleaning ..........................................................5-2
Lamp Replacement .................................................................5-3
Monitoring Detector Frequencies and Noise...........................5-4
Increasing Lamp Output......................................................5-4
Monitoring Lamp Noise ......................................................5-4

Contents
xModel 49iInstruction Manual Thermo Fisher Scientific
Capillary Service......................................................................5-5
Pump Rebuilding....................................................................5-6
Leak Test and Pump Checkout ...............................................5-7
External Leaks......................................................................5-7
Solenoid Leaks ....................................................................5-8
Solenoid Leak Test...............................................................5-9
Ozone Scrubber Test.............................................................5-10
Chapter 6 Troubleshooting.............................................................................. 6-1
Safety Precautions ...................................................................6-1
Troubleshooting Guides..........................................................6-2
Board-Level Connection Diagrams .........................................6-6
Connector Pin Descriptions....................................................6-8
Service Locations...................................................................6-21
Chapter 7 Servicing.......................................................................................... 7-1
Safety Precautions ...................................................................7-3
Firmware Updates...................................................................7-4
Accessing the Service Mode.....................................................7-4
Replacement Parts List............................................................7-4
Cable List................................................................................7-6
External Device Connection Components ..............................7-6
Removing the Measurement Bench and
Lowering the Partition Panel...................................................7-8
Fuse Replacement ...................................................................7-9
Pump Replacement...............................................................7-10
Fan Replacement...................................................................7-11
Analog Output Testing .........................................................7-12
Analog Output Calibration ...................................................7-14
Analog Input Calibration ......................................................7-15
Calibrating the Input Channels to Zero Volts ....................7-15
Calibrating the Input Channels to Full Scale......................7-16
I/O Expansion Board Replacement (Optional) .....................7-17
Digital Output Board Replacement.......................................7-19
Motherboard Replacement....................................................7-20
Measurement Interface Board Replacement ..........................7-21
Front Panel Board Replacement............................................7-22
LCD Module Replacement ...................................................7-23
Optical Bench Replacement..................................................7-24
Optical Bench Temperature Calibration ...............................7-26
Photometer Lamp Replacement ............................................7-27
Photometer Lamp Voltage Adjustment .................................7-28
Photometer Board Replacement............................................7-29
Detector Replacement...........................................................7-30