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Model 48i
Instruction Manual
Gas Filter Correlation CO Analyzer
Part number 101891-00
8Apr2005
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© 2005 Thermo Electron Corporation. All rights reserved.
“Analyze. Detect. Measure. Control” is a trademark of Thermo Electron Corporation. All other product names and
logos are the property of their respective owner.
Specifications, terms and pricing are subject to change. Not all products are available in all countries. Please consult
your local sales representative for details.
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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
Startup .................................................................................... 2-5
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 .............................................................. 3-9
Dual Range Mode.............................................................. 3-10
Autorange Mode ................................................................ 3-11
Gas Units........................................................................... 3-14
CO Range.......................................................................... 3-15
Set Custom Ranges ............................................................ 3-17
Averaging Time..................................................................... 3-18
Calibration Factors Menu ..................................................... 3-19
CO Background Correction............................................... 3-20
CO Span Coefficients ........................................................ 3-21
Calibration Menu ................................................................. 3-22
Calibrate CO Background.................................................. 3-23
Calibrate CO Coefficient ................................................... 3-24
Zero/Span Check Menu..................................................... 3-25
Thermo Electron Corporation Model 48i Instruction Manual iii
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Contents
Instrument Controls Menu ................................................... 3-29
Datalogging Settings .......................................................... 3-30
Communication Settings.................................................... 3-41
I/O Configuration.............................................................. 3-53
Temperature Compensation............................................... 3-71
Pressure Compensation ...................................................... 3-72
Screen Contrast.................................................................. 3-73
Service Mode ..................................................................... 3-74
Date/Time ......................................................................... 3-74
Diagnostics Menu ................................................................. 3-75
Program Version ................................................................ 3-76
Voltages ............................................................................. 3-77
Temperatures ..................................................................... 3-79
Pressure.............................................................................. 3-80
Flow................................................................................... 3-80
Sample/Reference Ratio ..................................................... 3-81
AGC Intensity.................................................................... 3-81
Motor Speed ...................................................................... 3-82
Analog Input Readings....................................................... 3-82
Analog Input Voltages........................................................ 3-83
Digital Inputs..................................................................... 3-84
Relay States ........................................................................ 3-84
Test Analog Outputs.......................................................... 3-85
Instrument Configuration.................................................. 3-86
Contact Information.......................................................... 3-87
Alarms Menu ........................................................................ 3-87
Internal Temperature ......................................................... 3-88
Bench Temperature............................................................ 3-90
Pressure.............................................................................. 3-91
Sample Flow ...................................................................... 3-93
Bias Voltage ....................................................................... 3-94
AGC Instensity .................................................................. 3-95
Motor Speed ...................................................................... 3-97
Zero and Span Check......................................................... 3-97
Zero and Span Auto Calibration ........................................ 3-99
Concentration.................................................................... 3-99
Service Menu ...................................................................... 3-101
Single/Dual/Auto Select................................................... 3-102
Pressure Calibration ......................................................... 3-103
Flow Calibration .............................................................. 3-106
Initial S/R Ratio............................................................... 3-109
Multi-point Calibration ................................................... 3-110
Preamp Board Calibration................................................ 3-113
Temperature Calibration.................................................. 3-114
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Contents
Analog Output Calibration ..............................................3-114
Analog Input Calibration .................................................3-117
Display Pixel Test ............................................................3-120
Restore User Defaults....................................................... 3-121
Password .............................................................................3-121
Lock Instrument ..............................................................3-122
Change Password ............................................................. 3-122
Remove Password.............................................................3-123
Enter Password.................................................................3-124
Chapter 4 Calibration........................................................................................4-1
Equipment Required...............................................................4-1
CO Concentration Standard................................................4-1
Zero Air Generator ..............................................................4-1
Flow Meter(s) and Controller(s)........................................... 4-2
Pressure Regulator for CO Standard Cylinder......................4-3
Mixing Chamber.................................................................. 4-3
Output Manifold ................................................................. 4-3
Pre-Calibration .......................................................................4-3
Calibration..............................................................................4-3
Connect the Instrument.......................................................4-3
Zero Adjust.......................................................................... 4-4
Span Adjust.......................................................................... 4-5
Additional Concentration Standards .................................... 4-6
Calibration Curve ................................................................4-6
Calibration Frequency.......................................................... 4-6
Periodic Zero and Span Checks...............................................4-6
References ...............................................................................4-7
HI and LO Multi-Point Calibration .......................................4-7
Default Coefficients ............................................................. 4-8
Cal Point 1, 2, and 3 Adjust................................................. 4-8
Chapter 5 Preventive Maintenance ...............................................................5-1
Replacement Parts...................................................................5-1
Cleaning the Outside Case...................................................... 5-2
Cleaning the Optics ................................................................5-2
IR Source Replacement ...........................................................5-3
Fan Filter Inspection and Cleaning .........................................5-3
Leak Test and Pump Check Out.............................................5-4
External Leaks...................................................................... 5-4
Leaks Across the Optional Zero/Span and
Sample Solenoid Valves........................................................ 5-4
Pump Rebuilding.................................................................... 5-5
Thermo Electron Corporation Model 48i Instruction Manual v
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Contents
Chapter 6 Troubleshooting.............................................................................. 6-1
Safety Precautions ................................................................... 6-1
Troubleshooting Guides.......................................................... 6-1
Board-Level Connection Diagrams ......................................... 6-5
Connector Pin Descriptions.................................................... 6-7
Service Locations................................................................... 6-20
Chapter 7 Servicing........................................................................................... 7-1
Safety Precautions ................................................................... 7-3
Firmware Updates................................................................... 7-3
Replacement Parts List............................................................ 7-4
Cable List................................................................................ 7-5
Lowering the Partition Panel................................................... 7-7
Fuse Replacement ................................................................... 7-8
Fan Replacement..................................................................... 7-9
IR Source Replacement ......................................................... 7-10
Filter Wheel Replacement ..................................................... 7-11
Chopper Motor Replacement................................................ 7-13
Optical Bench Replacement.................................................. 7-14
Optical Switch Replacement ................................................. 7-15
Bench Heater Assembly Replacement.................................... 7-16
Detector/Preamplifier Assembly Replacement....................... 7-17
Pump Replacement............................................................... 7-18
Pressure Transducer Replacement ......................................... 7-20
Pressure Transducer Calibration ........................................... 7-21
Flow Transducer Replacement .............................................. 7-23
Flow Transducer Calibration ................................................ 7-24
Capillary Cleaning or Replacement ....................................... 7-25
Optional Zero/Span and Sample Solenoid
Valve Replacement................................................................ 7-26
Analog Output Testing ......................................................... 7-27
Analog Output Adjustment................................................... 7-29
Ambient Temperature Calibration ........................................ 7-30
I/O Expansion Board (Optional) Replacement ..................... 7-31
Digital Output Board Replacement....................................... 7-33
Motherboard Replacement.................................................... 7-34
Measurement Interface Board Replacement .......................... 7-35
Front Panel Board Replacement............................................ 7-36
LCD Module Replacement ................................................... 7-37
Service Locations................................................................... 7-39
vi Model 48i Instruction Manual Thermo Electron Corporation
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Contents
Chapter 8 System Description.........................................................................8-1
Hardware ................................................................................8-2
Optical Bench ......................................................................8-3
Band-pass Filter ...................................................................8-3
Bench Heater Board.............................................................8-3
Chopper Motor.................................................................... 8-3
Optical Pickup..................................................................... 8-4
Gas Filter Wheel .................................................................. 8-4
Infrared Source ....................................................................8-4
Pre-amplifier Assembly with IR Detector .............................8-4
Sample Flow Sensor ............................................................. 8-4
Pressure Transducer ............................................................. 8-4
Capillary ..............................................................................8-4
Pump ...................................................................................8-4
Purge Flow Switch (optional)...............................................8-4
Software..................................................................................8-5
Instrument Control..............................................................8-5
Monitoring Signals...............................................................8-5
Output Communication......................................................8-5
Electronics ..............................................................................8-7
Motherboard........................................................................8-7
Measurement Interface Board ..............................................8-8
Flow Sensor Assembly..........................................................8-8
Pressure Sensor Assembly .....................................................8-8
Bench Heater Board.............................................................8-9
Pre-amp Board Assembly .....................................................8-9
Digital Output Board...........................................................8-9
I/O Expansion Board (Optional) .........................................8-9
Front Panel Connector Board ..............................................8-9
I/O Components ..................................................................8-10
Analog Voltage Outputs.....................................................8-10
Analog Current Outputs (Optional) ..................................8-10
Analog Voltage Inputs (Optional)......................................8-11
Digital Relay Outputs ........................................................8-11
Digital Inputs..................................................................... 8-11
Serial Ports.........................................................................8-11
RS-232 Connection ........................................................... 8-12
RS-485 Connection ........................................................... 8-13
Ethernet Connection..........................................................8-13
External Accessory Connector ............................................8-13
Chapter 9 Optional Equipment ........................................................................9-1
Internal Zero/Span Assembly .................................................. 9-1
Internal Zero Air Scrubber ......................................................9-1
Thermo Electron Corporation Model 48i Instruction Manual vii
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Contents
Filter Wheel Purge .................................................................. 9-1
Calibration Note.................................................................. 9-2
Teflon Particulate Filter .......................................................... 9-3
I/O Expansion Board Assembly............................................... 9-3
Terminal Block and Cable Kits ............................................... 9-3
Mounting Options.................................................................. 9-4
Appendix A Warranty............................................................................................ A-1
Appendix B C-Link Protocol Commands............................................................ B-1
Instrument Identification Number..........................................B-2
Commands .............................................................................B-2
Measurements.........................................................................B-8
Alarms...................................................................................B-11
Diagnostics ...........................................................................B-15
Datalogging ..........................................................................B-16
Calibration............................................................................B-22
Keys/Display.........................................................................B-25
Measurement Configuration ................................................. B-27
Hardware Configuration.......................................................B-30
Communications Configuration ...........................................B-32
I/O Configuration.................................................................B-36
Record Layout Definition .....................................................B-40
Format Specifier for ASCII Responses................................ B-41
Format Specifier for Binary Responses ...............................B-41
Format Specifier for Front-Panel Layout ...........................B-41
Appendix C MODBUS Protocol ........................................................................... C-1
Serial Communication Parameters ..........................................C-2
TCP Communication Parameters ...........................................C-2
Application Data Unit Definition ...........................................C-2
Function Codes.......................................................................C-3
MODBUS Commands Supported..........................................C-8
viii Model 48i Instruction Manual Thermo Electron Corporation
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About This Manual
This manual provides information about operating, maintaining, and
servicing the analyzer. It also contains important alerts to ensure safe
operation and prevent equipment damage. The manual is organized into the
following chapters and appendices to provide direct access to specific
operation and service information:
• Chapter 1 “Introduction” provides an overview of product features,
describes the principles of operation, and lists the specifications.
• Chapter 2 “Installation” describes how to unpack, setup, and startup the
analyzer.
• Chapter 3 “Operation” describes the front panel display, the front panel
pushbuttons, and the menu-driven software.
• Chapter 4 “Calibration” provides the procedures for calibrating the
analyzer and describes the required equipment.
• Chapter 5 “Preventive Maintenance” provides maintenance procedures
to ensure reliable and consistent instrument operation.
• Chapter 6 “Troubleshooting” presents guidelines for diagnosing analyzer
failures, isolating faults, and includes recommended actions for restoring
proper operation.
• 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.
• Chapter 8 “System Description” describes the function and location of
the system components, provides an overview of the software structure,
and includes a description of the system electronics and input/output
connections.
• Chapter 9 “Optional Equipment” describes the optional equipment that
can be used with this analyzer.
• Appendix A “Warranty” provides a copy of the warranty statement.
Thermo Electron Corporation Model 48i Instruction Manual ix
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Preface
• 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 a datalogger.
• 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.
Safety Review the following safety information carefully before using the analyzer.
This manual provides specific information on how to operate the analyzer,
however if the analyzer is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be impaired.
Safety and Equipment
Damage Alerts
This 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 and the actual alerts that appear in this manual.
Safety and Equipment Damage Alert Descriptions
Alert Description
DANGER A hazard is present that will result in death or serious
personal injury if the warning is ignored.
WARNING A hazard is present or an unsafe practice can result in
serious personal injury if the warning is ignored.
CAUTION The hazard or unsafe practice could result in minor to
moderate personal injury if the warning is ignored.
Equipment Damage The hazard or unsafe practice could result in property
damage if the warning is ignored.
x Model 48i Instruction Manual Thermo Electron Corporation
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Safety and Equipment Damage Alerts in this Manual
Alert Description
WARNING If the equipment is operated in a manner not specified by
the manufacturer, the protection provided by the
equipment may be impaired.
The service procedures in this manual are restricted to
qualified service personnel only.
The Model 48i is supplied with a three-wire grounding
cord. Under no circumstances should this grounding
system be defeated.
CAUTION If the LCD panel breaks, do not to 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.
Equipment Damage Do not attempt to lift the analyzer by the cover or other
external fittings.
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.
Handle all printed circuit boards by the edges only.
Do not remove the panel or frame from the LCD module.
The LCD module polarizing plate is very fragile, handle it
carefully.
Do not wipe the LCD module polarizing plate with a dry
cloth, it may easily scratch the plate.
Do not use Ketonics solvent or aromatic solvent to clean
the LCD module, use a soft cloth moistened with a
naphtha cleaning solvent.
Do not place the LCD module near organic solvents or
corrosive gases.
Do not shake or jolt the LCD module.
Preface
Where to Get Help Service is available from exclusive distributors worldwide. Contact one of
the phone numbers below for product support and technical information.
866-282-0430
508-520-0430
Thermo Electron Corporation Model 48i Instruction Manual xi
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Preface
Thermo Electron Corporation Model 48i Instruction Manual xii
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Chapter 1 Introduction
The Model 48i CO Analyzer measures CO concentration using Gas Filter
Correlation (GFC). The Model 48i combines proven detection technology,
easy to use menu-driven software, and advanced diagnostics to offer
unsurpassed flexibility and reliability. The Model 48i has the following
features:
• 320 x 240 graphics display
• Menu-driven software
• Field programmable ranges
• User-selectable single/dual/auto range modes
• Multiple user-defined analog outputs
• Analog input options
• High sensitivity
• Fast response time
• Linearity through all ranges
• Highly specific to CO
• Self-aligning optics
• Automatic temperature and pressure compensation
• User-selectable digital input/output capabilities
• Standard communications features include RS232/485 and Ethernet
• C-Link, MODBUS, and streaming data protocols
For details of the analyzer’s principle of operation and product
specifications, see the following topics:
Thermo Electron Corporation 48i Instruction Manual 1-1
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Introduction
Principle of Operation
• “Principle of Operation” on page 1-2 describes the principles by which
your analyzer operates.
• “Specifications” on page 1-3 is a list of the analyzer’s performance
specifications.
Thermo Electron is pleased to supply this CO analyzer. We are committed
to the manufacture of instruments exhibiting high standards of quality,
performance, and workmanship. Service personnel are available for
assistance with any questions or problems that may arise in the use of this
analyzer. For more information on servicing, see Chapter 7 “Servicing”.
Principle of Operation The Model 48i operates on the principle that carbon monoxide (CO)
absorbs infrared radiation at a wavelength of 4.6 microns. Because infrared
absorption is a non-linear measurement technique, it is necessary to
transform the basic analyzer signal into a linear output. The Model 48i uses
an internally stored calibration curve to accurately linearize the instrument
output over any range up to a concentration of 10,000 ppm.
The sample is drawn into the Model 48i through the sample bulkhead, as
shown in Figure 1-1. The sample flows through the optical bench.
Radiation from an infrared source is chopped and then passed through a gas
filter alternating between CO and N2. The radiation then passes through a
narrow bandpass interference filter and enters the optical bench where
absorption by the sample gas occurs. The infrared radiation then exits the
optical bench and falls on an infrared detector.
The CO gas filter acts to produce a reference beam which cannot be further
attenuated by CO in the sample cell. The N2 side of the filter wheel is
transparent to the infrared radiation and therefore produces a measurement
beam which can be absorbed by CO in the cell. The chopped detector signal
is modulated by the alternation between the two gas filters with an
amplitude related to the concentration of CO in the sample cell. Other
gases do not cause modulation of the detector signal since they absorb the
reference and measure beams equally. Thus, the GFC system responds
specifically to CO.
The Model 48i outputs the CO concentration to the front panel display, the
analog outputs, and also makes the data available over the serial or ethernet
connection.
1-2 48i Instruction Manual Thermo Electron Corporation
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Introduction
Specifications
Figure 1-1. Model 48i Flow Schematic
Specifications Table 1-1. Model 48i Specifications
Preset ranges 0-1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000 (ppm
or mg/m
Custom ranges 0-1 to 10000 (ppm or mg/m
Zero roise 0.02 ppm RMS (30 second averaging time)
Lower detectable limit 0.04 ppm
Zero drift (24 hour) < 0.1 ppm
Span drift ±
Response time 60 seconds (30 second averaging time)
Linearity ±
±
Sample flow rate 1.0 LPM
Operating temperature
20–30 °C (may be safely operated over the range of 0–45 °C)
3
)
1% full-scale
1% of full-scale ≤ 1000 ppm
2.5% of full-scale > 1000 ppm
3
)
*
Thermo Electron Corporation 48i Instruction Manual 1-3
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Introduction
Specifications
Power requirements 100 VAC @ 50/60 Hz
115 VAC @ 50/60 Hz
220–240 VAC @ 50/60 Hz
275 watts
Physical dimensions 16.75” (W) X 8.62” (H) X 23” (D)
Weight Approximately 49 lbs.
Analog outputs 6 voltage outputs; 0–100 mV, 1, 5, 10 V (User selectable), 5% of
full-scale over/under range, 12 bit resolution, user selectable for
measurement input
Digital outputs 1 power fail relay Form C, 10 digital relays Form A, user selectable
alarm output, relay logic, 100 mA @ 200 VDC
Digital inputs 16 digital inputs, user select programmable, TTL level, pulled high
Serial Ports 1 RS-232 or RS-485 with two connectors, baud rate 1200–115200,
data bits, parity, and stop bits, protocols: C-Link, MODBUS, and
streaming data (all user selectable)
Ethernet connection RJ45 connector for 10Mbs Ethernet connection, static or dynamic
TCP/IP addressing
*
In non condensing environments. Performance specifications based on operation with 20–30 °C range.
1-4 48i Instruction Manual Thermo Electron Corporation
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Chapter 2 Installation
Installing the Model 48i includes the following recommendations and
procedures:
• “Lifting” on page 2-1
• “Unpacking and Inspection” on page 2-1
• “Setup Procedure” on page 2-3
• “Startup” on page 2-5
Lifting When lifting the instrument, use procedure appropriate to lifting a heavy
object, such as, bending at the knees while keeping your back straight and
upright. Grasp the instrument at the bottom in the front and at the rear of
the unit. Although one person can lift the unit, it is desirable to have two
persons lifting, one by grasping the bottom in the front and the other by
grasping the bottom in the rear.
Unpacking and
Inspection
Equipment Damage Do not attempt to lift the instrument by the cover or
other external fittings.
The Model 48i is shipped complete in one container. If there is obvious
damage to the shipping container when you receive the instrument, notify
the carrier immediately and hold for inspection. The carrier is responsible
for any damage incurred during shipment.
Use the following procedure to unpack and inspect the instrument.
1. Remove the instrument from the shipping container and set it on a table
or bench that allows easy access to both the front and rear.
2. Remove the cover to expose the internal components.
Thermo Electron Corporation Model 48i Instruction Manual 2-1
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Installation
Unpacking and Inspection
3. Remove the packing material (Figure 2-1).
Remove Packing
(2 pieces)
Remove Packing
(2 pieces)
Units without Optional I/O Board
Units with Optional I/O Board
Figure 2-1. Remove the Packing Material
4. Remove the three shipping screws (Figure 2-2).
Shipping Screws (3)
Figure 2-2. Remove the Shipping Screws
5. Check for possible damage during shipment.
2-2 Model 48i Instruction Manual Thermo Electron Corporation
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6. Check that all connectors and circuit boards are firmly attached.
7. Re-install the cover.
Setup Procedure Use the following procedure to setup the instrument.
1. Connect the sample line to the SAMPLE bulkhead on the rear panel
(Figure 2-3). Ensure that the sample line is not contaminated by dirty,
wet, or incompatible materials. All tubing should be constructed of FEP
Teflon®, 316 stainless steel, borosilicate glass, or similar tubing with an
OD of 1/4-inch and a minimum ID of 1/8-inch. The length of the
tubing should be less than 10 feet.
Note Gas must be delivered to the instrument at atmospheric pressure. It
may be necessary to use an atmospheric bypass plumbing arrangement as
shown in Figure 2-4.
Installation
Setup Procedure
2. Connect the EXHAUST bulkhead to a suitable vent. The exhaust line
should be 1/4-inch OD with a minimum ID of 1/8-inch. The length of
the exhaust line should be less than 10 feet. Verify that there is no
restriction in this line.
3. If the optional zero/span solenoid valves are installed, connect a source
of CO-free air to the ZERO bulkhead, and connect a source of CO
span gas to the SPAN bulkhead.
4. Connect a suitable recording device to the rear panel connector. See the
“Operation” chapter for more information about the rear panel
pin-outs.
5. Plug the instrument into an outlet of the appropriate voltage and
frequency.
WARNING The Model 48i is supplied with a three-wire grounding cord.
Under no circumstances should this grounding system be defeated.
Thermo Electron Corporation Model 48i Instruction Manual 2-3
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Installation
Setup Procedure
Figure 2-3. Model 48i Rear Panel
Instrument Bulkhead
Figure 2-4. Atmospheric Dump Bypass Plumbing
Vent to Exhaust Line
at Atmospheric Pressure
Input Gas Line
2-4 Model 48i Instruction Manual Thermo Electron Corporation
Page 21
Startup Use the following procedure when starting the instrument.
1. Turn the power ON.
2. Allow 90 minutes for the instrument to stabilize.
3. Set instrument parameters such as operating ranges and averaging times
to appropriate settings. For more information about instrument
parameters, see the “Operation” chapter.
4. Before beginning the actual monitoring, perform a multipoint
calibration as described in the “Calibration” chapter.
Installation
Startup
Thermo Electron Corporation Model 48i Instruction Manual 2-5
Page 22
Installation
Startup
2-6 Model 48i Instruction Manual Thermo Electron Corporation
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Chapter 3 Operation
This chapter describes the front panel display, front panel pushbuttons, and
menu-driven software.
• “Display” on page 3-2 describes the LCD graphics display.
• “Pushbuttons” on page 3-3 describes the various front panel
pushbuttons and the expected key actions for each.
• “Software Overview” on page 3-4 describes the menu-driven software
and submenus.
• “Range Menu” on page 3-8 describes the gas units, CO range, and
custom ranges.
• “Averaging Time” on page 3-18 describes the averaging period applied
to CO measurements.
• “Calibration Factors Menu” on page 3-19 describes the calibration
factors used to correct CO measurement readings.
• “Calibration Menu” on page 3-22 describes calibration of zero and span.
• “Instrument Controls Menu” on page 3-29 describes the instrument
hardware control and configuration.
• “Diagnostics Menu” on page 3-75 describes the diagnostic information
and functions.
• “Alarms Menu” on page 3-87 describes a list of items that are monitored
by the analyzer.
• “Service Menu” on page 3-101 describes service related menu items.
• “Password” on page 3-121 describes how to enter/change a password,
lock and unlock the analyzer.
Thermo Electron Corporation Model 48i Instruction Manual 3-1
Page 24
Operation
Display
Display The 320 x 240 graphics liquid-crystal display (LCD) shows the sample
sample concentrations, instrument parameters, instrument controls, help,
and error messages. Some menus contain more items than can be displayed
at one time. For these menus, use and to move the cursor up
and down to each item.
Figure 3-1. 48i Front Panel Display
CAUTION 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.
3-2 Model 48i Instruction Manual Thermo Electron Corporation
Page 25
Pushbuttons
Pushbuttons The Pushbuttons allow the user to traverse the various screens/menus.
Figure 3-2. Front Panel Pushbuttons
Operation
Table 3-1. Front Panel Pushbuttons
= Soft Keys The soft keys are used to provide shortcuts that
allow the user to jump to user-selectable menu screens. For
more information on processing soft keys, see “Soft Keys”
below.
= Run The is used to display the Run screen. The Run
screen normally displays the CO concentration.
= Menu The is used to display the Main Menu when in the
Run screen, or back up one level in the menu system. For
more information about the Main Menu, see “Main Menu”
later in this chapter.
= Help The is context-sensitive, that is, it provides
additional information about the screen that is being
displayed. Press for a brief explanation about the
current screen or menu. Help messages are displayed using
lower case letters to easily distinguish them from the
operating screens. To exit a help screen, press or
return to the Run screen.
= Up, Down
= Left, Right
The four arrow pushbuttons ( , , ,
and ) move the cursor up, down, left, and right or
change values and states in specific screens.
to return to the previous screen, or to
= Enter The is used to select a menu item,
accept/set/save a change, and/or toggle on/off functions.
Thermo Electron Corporation Model 48i Instruction Manual 3-3
Page 26
Operation
Software Overview
Soft Keys The Soft Keys are multi-functional keys that use part of the display to
identify their function at any moment. The function of the soft keys allow
immediate access to the menu structure and most often used menus and
screens. They are located directly underneath the display and as the keys'
functions change this is indicated by user-defined labels in the lower part of
the display, so that the user knows what the keys are to be used for.
To process a soft key, place the menu cursor “>” on the item of the selected
menu or screen you wish to set. Press followed by the selected soft key
within 1 second of pressing the right-arrow key. The edit soft key prompt
will be displayed for configuration for the new label.
Note Not all menu items may be assigned to soft keys. If a particular menu
or screen item cannot be assigned, the key assignment screen will not come
up upon entering right-arrow-soft key combinations. All items under the
Service menu (including the menu itself) cannot be assigned soft keys.
X WCONCENTRATION W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
EDIT SOFT KEY PROMPT:
CURRENTLY:
ASSSSSSSSSSSS
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
Software Overview The Model 48i is based on menu-driven software as illustrated by the
flowchart in Figure 3-3. The Power-Up screen, shown at the top of the
flowchart, is displayed each time the instrument is turned on. This screen is
displayed while the instrument is warming up and performing self-checks.
After the warm-up period, the Run screen is automatically displayed. The
Run screen is the normal operating screen. It displays the CO
concentration, depending on operating mode. From the Run screen, the
Main Menu can be displayed by pressing . The Main Menu contains
a list of submenus. Each submenu contains related instrument parameters
and/or functions. This chapter describes each submenu and screen in detail.
Refer to the appropriate sections for more information.
3-4 Model 48i Instruction Manual Thermo Electron Corporation
Page 27
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Thermo Electron Corporation Model 48i Instruction Manual 3-5
Page 28
Operation
Software Overview
Power-Up Screen The Power-Up screen is displayed on power up of the Model 48i. The
Self-Test is displayed while internal components are warming up and
diagnostic checks are performed.
Run Screen The Run screen displays the CO concentrations. The status bar displays
time and the status of the remote control interface, and optional zero/span
solenoid valves, if installed. The word “SAMPLE” on the bottom left of the
display indicates the analyzer has the span/zero valve option and is in
“SAMPLE” mode. Other modes appear in the same area of the display as
“ZERO” or “SPAN”. For more information about the optional solenoid
valves, see Chapter 9, “Optional Equipment”.
When operating in dual or autorange mode two sets of coefficients are used
to calculate the CO “LOW” and “HIGH” concentrations. Also, two
averaging times are used—one for each range. The title bar indicates which
range concentrations are displayed. The words “LOW RANGE
CONCENTRATION” on the top of the display indicates that the low
concentration is displayed. The display shows as default the low
concentrations. Use the and arrows to toggle between high
and low concentrations. The example below shows the Run screen in single
range mode.
3-6 Model 48i Instruction Manual Thermo Electron Corporation
Page 29
Operation
Software Overview
X CONCENTRATION W
NO 28.7
CO 15.80
NOx 29.2
SAMPLE 12:34 ALARMx
RANGE AVG DIAGS ALARM
PPB
PPM
PPB
Main Menu The Main Menu contains a number of submenus. Instrument parameters
and features are divided into these submenus according to their function.
Use and to move the cursor to each submenu. Use to
select a submenu.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
MAIN MENU:
>RANGE
AVERAGING TIME
CALIBRATION FACTORS
CALIBRATION
INSTRUMENT CONTROLS
DIAGNOSTICS
ALARMS
RANGE AVG DIAGS ALARM
SERVICE
PASSWORD
ª
Thermo Electron Corporation Model 48i Instruction Manual 3-7
Page 30
Operation
Range Menu
Range Menu The Range menu allows the operator to select the gas units, CO ranges, and
to set the custom ranges. The screens below show the range menu in single
mode and dual/autorange modes. For more information about the single,
dual or autorange modes, see “Single Range Mode”, Dual Range Mode”,
and “Autorange Mode” below.
• In the Main Menu, choose Range.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Main Menu or to return to the Run
screen.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
RANGE:
>GAS UNITS PPM
RANGE 50
SET CUSTOM RANGES
RANGE AVG DIAGS ALARM
XLOW RANGE CONCENTRATION W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
RANGE:
>GAS UNITS PPM
LO RANGE 50
HI RANGE 100
SET CUSTOM RANGES
RANGE AVG DIAGS ALARM
3-8 Model 48i Instruction Manual Thermo Electron Corporation
Page 31
Operation
Range Menu
Single Range Mode In the single range mode, there is one range, one averaging time, and one
span coefficient.
By default, the two CO analog outputs are arranged on the rear panel
connector as shown in Figure 3-4. See Table 3-2 for channels and pin
connections. Single range mode may be selected from the
“Single/Dual/Auto Select” in the “Service Menu”, later in this chapter.
Figure 3-4. Pin-Out of Rear Panel Connector in Single Range Mode
Table 3-2. Default Analog Outputs in Single Range Mode
Channel Pin Description
1 14 CO Analog Output
2 33 CO Analog Output
3 15 None
4 34 None
5 17 None
6 26 None
Ground 16, 18, 19, 35, 37 Signal Ground
Note All channels are user definable. If any customization has been made to
the analog output configuration, the default selections may not apply.
Thermo Electron Corporation Model 48i Instruction Manual 3-9
Page 32
Operation
Range Menu
Dual Range Mode In the dual range mode, there are two independent analog outputs. These
are labeled simply as the “High Range” and the “Low Range”. Each channel
has its own analog output range, averaging time, and span coefficient.
This enables the sample concentration reading to be sent to the analog
outputs at two different ranges. For example, the low CO analog output can
be set to output concentrations from 0 to 50 ppm and the high CO analog
output set to output concentrations from 0 to 100 ppm.
In addition, each CO analog output has a span coefficient. There are two
span coefficients so that each range can be calibrated separately. This is
necessary if the two ranges are not close to one another. For example, the
low CO range is set to 0–50 ppm and the high CO range is set to 0–10,000
ppm.
By default, in the dual range mode, the analog outputs are arranged on the
rear panel connector as shown in Figure 3-5. See Table 3-3 for channels and
pin connections. Dual range mode may be selected from the
“Single/Dual/Auto Select” in the “Service Menu,” later in this chapter.
Figure 3-5. Pin-Out of Rear Panel Connector in Dual Range Mode
3-10 Model 48i Instruction Manual Thermo Electron Corporation
Page 33
Operation
Range Menu
Table 3-3. Default Analog Outputs in Dual Range Mode
Channel Pin Description
1 14 CO High Range
2 33 CO Low Range
3 15 None
4 34 None
5 17 None
6 26 None
Ground 16, 18, 19, 35, 37 Signal Ground
Note All channels are user definable. If any customization has been made to
the analog output configuration, the default selections may not apply.
Autorange Mode The autorange mode switches the CO analog outputs between a high and
low ranges, depending on the concentration level. The high and low ranges
are defined in the Range menu.
For example, suppose the low range is set to 50 ppm and the high range is
set to 100 ppm (Figure 3-6). Sample concentrations below 50 ppm are
presented to the low ranges analog outputs and sample concentrations
above 50 ppm are presented to the high ranges analog outputs. When the
low range is active, the status output is at 0 volts. When the high range is
active, the status output is at half of full-scale.
When the high range is active, the concentration must drop to 95% of the
low CO range for the low range to become active.
In addition, each CO analog output has a span coefficient. There are two
span coefficients so that each range can be calibrated separately. This is
necessary if the two ranges are not close to one another. For example, the
low CO range is set to 0–50 ppm and the high CO range is set to 0–10,000
ppm.
Thermo Electron Corporation Model 48i Instruction Manual 3-11
Page 34
Operation
Range Menu
Figure 3-6. Analog Output in Autorange Mode
By default, in the autorange mode, the analog outputs are arranged on the
rear panel connector as shown in Figure 3-7. Refer to Table 3-4 for channels
and pin connections. Autorange mode may be selected from the
“Single/Dual/Auto Select” in the “Service Menu”, later in this chapter.
3-12 Model 48i Instruction Manual Thermo Electron Corporation
Page 35
Operation
Range Menu
Figure 3-7. Pin-Out of Rear Panel Connector in Autorange Mode
Table 3-4. Default Analog Outputs in Autorange Mode
Channel Pin Description
1 14 CO Analog Output
2 33 CO Status Output:
half-scale = high range
zero scale = low range
3 15 None
4 34 None
5 17 None
6 26 None
Ground 16, 18, 19, 35, 37 Signal Ground
Note All channels are user definable. If any customization has been made to
the analog output configuration, the default selections may not apply.
Thermo Electron Corporation Model 48i Instruction Manual 3-13
Page 36
Operation
Range Menu
Gas Units The Gas Units screen defines how the CO concentration readings is
expressed. Gas units of parts per million (ppm) and milligrams per cubic
meter (mg/m3) are available. The mg/m3 gas concentration mode is
calculated using a standard pressure of 760 mmHg and a standard
temperature of 20 °C.
When switching from ppm to mg/m3, the analog ranges all default to the
highest range in that mode. For example, when switching from mg/m3 to
ppm, all the ranges default to 10,000 ppm. Therefore, whenever you change
units, you should also check the range settings.
• In the Main Menu, choose Range > Gas Units.
•Use and for a list of choices.
• Press to save the new units.
• Press to return to the Range menu or to return to the
Run screen.
Note If the units change from ppm to mg/m3 or vice versa, a display
warning will appear that ranges will be defaulted and calibration parameters
reset.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
GAS UNITS:
CURRENTLY: PPM
SET TO: MG/M3 ?
AND SET RANGES AND CAL TOX
DEFAULT SETTINGXXXXXXXXXXX
©ª
CHANGE VALUE
RANGE AVG DIAGS ALARM
SAVE
3-14 Model 48i Instruction Manual Thermo Electron Corporation
Page 37
Operation
Range Menu
CO Range The CO
outputs. For example, a CO range of 0–50 ppm restricts the analog output
to concentrations between 0 and 50 ppm.
The display shows the current CO range. The next line of the display is
used to change the range. The range screen is similar for the single, dual,
and autorange modes. The only difference between the screens are the
words “High” or “Low” displayed to indicate which range is displayed. The
example below shows the CO range screen in single mode. For more
information about the dual and autorange modes, see “Single Range
Mode”, “Dual Range Mode”, and “Autorange Mode” earlier in this chapter.
Table 3-5 lists the standard ranges.
• In the Main Menu, choose Range > Range.
•Use and for a list of choices.
• Press to save the new range.
• Press to return to the Range menu or to return to the
Run screen.
Range screen defines the concentration range of the analog
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
RANGE:
CURRENTLY: 10000
SET TO: 5000 ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Thermo Electron Corporation Model 48i Instruction Manual 3-15
Page 38
Operation
Range Menu
Table 3-5. Standard Ranges
ppm mg/m
11
22
55
10 10
20 20
50 50
100 100
200 200
500 500
1,000 1,000
2,000 2,000
5,000 5,000
3
10,000 10,000
C1 C1
C2 C2
C3 C3
For more information about custom ranges, see “Set Custom Ranges” below.
3-16 Model 48i Instruction Manual Thermo Electron Corporation
Page 39
Operation
Range Menu
Set Custom Ranges The Custom Ranges Menu lists three custom ranges: C1, C2, and C3.
Custom ranges are user-defined ranges. In the ppm mode, any value
between 1 and 10,000 ppm can be specified as a range. In the mg/m3
mode, any value between 1 and 10,000 mg/m3 can be specified as a range.
• In the Main Menu, choose Range > Set Custom Ranges.
•Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Range menu or to return to the
Run screen.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
CUSTOM RANGES:
>CUSTOM RANGE 1 55.5
CUSTOM RANGE 2 75.0
CUSTOM RANGE 3 125.0
RANGE AVG DIAGS ALARM
Custom Ranges The Custom Ranges screen is used to define the custom ranges.
The display shows the current custom range. The next line of the display is
used to set the range. To use the custom full-scale range, be sure to select it
(Custom range 1, 2, or 3) in the CO Ranges screen. For more information
about selecting ranges, see “CO Range” above.
• In the Main Menu, choose Range > Custom Ranges > Custom Range
1, 2, or 3.
• Use and to increment or decrement the numeric value.
• Press to save the new range.
• Press to return to the Set Custom Ranges menu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-17
Page 40
Operation
Averaging Time
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
CUSTOM RANGE 1:
CURRENTLY: 55.5
SET TO: 000055.6 ?
©ª
CHANGE VALUE
RANGE AVG DIAGS ALARM
§¨
MOVE CURSOR
SAVE
Averaging Time The Averaging Time defines a time period (1 to 300 seconds) during which
CO measurements are taken. The average concentration of the readings are
calculated for that time period. The front panel display and analog outputs
are updated every 10 seconds for averaging times between 10 and 300
seconds. For averaging times of 1, 2, and 5 seconds, the front panel display
and analog outputs are updated every second. An averaging time of 10
seconds, for example, means that the average concentration of the last 10
seconds will be output at each update. An averaging time of 300 seconds
means that the moving average concentration of the last 300 seconds will be
output at each update. Therefore, the lower the averaging time the faster
the front panel display and analog outputs respond to concentration
changes. Longer averaging times are typically used to smooth output data.
The Averaging Time screens for the single and dual or auto range modes are
shown below. In the dual and auto range modes, an Averaging Time Menu
is displayed before the averaging time screens. This menu is needed because
the dual and autorange modes have two averaging times (high and low).
The Averaging Time screens function the same way in the single, dual, and
autorange modes. The following averaging times are available: 1, 2, 5, 10,
20, 30, 60, 90, 120, 180, 240, and 300 seconds.
• In the Main Menu, choose Averaging Time.
• Use and for a list of choices.
• Press to save the averaging time.
• Press to return to the Main Menu or to return to the Run
screen.
3-18 Model 48i Instruction Manual Thermo Electron Corporation
Page 41
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
AVERAGING TIME:
CURRENTLY: 30 SEC
SET TO: 10 SEC ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Operation
Calibration Factors Menu
Calibration Factors
Menu
Calibration factors are used to correct the CO concentration readings that
the instrument generates using its own internal calibration data. The
Calibration Factors menu displays the calibration factors. The screens below
show the calibration factors menu in single mode and dual/autorange
modes.
Normally, the instrument is calibrated automatically using the Calibration
menu described in “Calibration Menu” later in this chapter. However, the
instrument can also be calibrated manually using the Calibration Factors
menu.
To manually calibrate the instrument, see “CO Backgrounds” and “CO
Span Coefficients” below for more information.
• In the Main Menu, choose Calibration Factors.
• Use and to move the cursor up and down.
• Press to accept the choice.
• Press to return to the Main Menu or to return to the
Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-19
Page 42
Operation
Calibration Factors Menu
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
CALIBRATION FACTORS:
>BKG 0.000
COEF 1.000
RANGE AVE DIAGS ALARM
XLOW RANGE CONCENTRATION W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
CALIBRATION FACTORS:
>BKG 0.000
LO COEF 1.000
HI COEF 1.000
RANGE AVG DIAGS ALARM
CO Background Correction The CO Background Correction is determined during zero calibration. The
CO background is the amount of signal read by the analyzer while sampling
zero air. The background signal is the combination of electrical noise and
scattered light. Before the analyzer sets the CO reading to zero, it stores
these value as the CO background correction.
The CO Background screen is used to perform a manual zero calibration of
the instrument. As such, the instrument should sample zero air until stable
readings are obtained. The first line of the display shows the current CO
reading. This reading is the CO background signal. The second line of the
display shows the CO background correction that is stored in memory and
is being used to correct the CO reading. That is, the CO background
correction is subtracted from the CO reading.
3-20 Model 48i Instruction Manual Thermo Electron Corporation
Page 43
Operation
Calibration Factors Menu
In the example below, the analyzer is reading 15.80 ppm of CO while
sampling zero air. The CO background correction is 0.0 ppm. That is, the
analyzer is not applying a zero background correction. The question mark
is used as a prompt to change the background correction. In this case the
background correction must be increased to 15.80 ppm in order for the CO
reading to be at 0 ppm.
To set the CO reading in the example below to zero, use to
increment the CO background correction to 15.80 ppm. As the CO
background correction is increased, the CO concentration is decreased. At
this point, however, no real changes have been made. To escape this screen
without making any changes, press to return to the Calibration
Factors menu or to return to the Run screen. Press to actually
set the CO reading to 0 ppm and store the background correction of 15.80
ppm.
• In the Main Menu, choose Calibration Factors > CO Bkg.
•Use and to increment or decrement the proposed
background value.
• Press to save the new background.
• Press to return to the Calibration Factors menu or to
return to the Run screen.
XXLO WCONCENTRATIONXXLO W
CO 15.8 PPM
SAMPLE 12:34 ALARMx
CO BACKGROUND:
CO: 15.8
SET BKG TO: 0.0 ?
RANGE AVG DIAGS ALARM
©ª
INC/DEC
SAVE VALUE
CO Span Coefficients The CO span coefficient is usually calculated by the instrument processor
during calibration. The span coefficients are used to correct the CO
readings and normally has a value near 1.000.
Thermo Electron Corporation Model 48i Instruction Manual 3-21
Page 44
Operation
Calibration Menu
The CO Span Coefficient screen enables the CO span coefficient to be
manually changed while sampling span gas of known concentration.
Note The concentration value will show ERROR if the measured
concentration is not a valid span value (either higher than the selected range,
or 0 or lower).
The display shows the current CO concentration reading. The next line of
the display shows the CO span coefficient that is stored in memory and is
being used to correct the CO concentration. Notice that as the span
coefficient value is changed, the current CO concentration reading above
also changes. However, no real changes are made until is pressed.
In dual or autorange modes, “High” or “Low” is displayed to indicate the
calibration of the high or low coefficient.The example below shows the
coefficient screen in dual/autorange mode.
• In the Main Menu, choose Calibration Factors > Hi Coef.
• Use and to increment or decrement the coefficient value.
• Press to save the new coefficient.
• Press to return to the Calibration Factors menu or to
return to the Run screen.
WHIGH RANGE CONCENTRATIONW
CO 15.80 PPM
SAMPLE 12:34 ALARMx
HIGH CO COEFFICIENT:
HIGH CO: 15.80
SET COEF TO: 1.000 ?
RANGE AVG DIAGS ALARM
©ª
INC/DEC
SAVE VALUE
Calibration Menu The Calibration menu is used to calibrate zero and span. The calibration
menu is similar for the single, dual, and autorange mode as shown below.
The dual and autorange modes have two CO span factors (high and low).
This allows each range to be calibrated separately. This is necessary if the
3-22 Model 48i Instruction Manual Thermo Electron Corporation
Page 45
Operation
Calibration Menu
two ranges used are not close to one another. For example, a low CO range
of 50 ppm and a high CO range of 1000 ppm. For more information about
calibration, see Chapter 4, “Calibration”.
• In the Main Menu, choose Calibration.
• Use and to move the cursor up and down.
• Press to accept the choice.
• Press to return to the Main Menu or to return to the Run
screen.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
CALIBRATION:
>CAL BACKGROUND
CAL COEF
ZERO/SPAN CHECK
RANGE AVG DIAGS ALARM
XLOWWRANGE CONCENTRATION W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
CALIBRATION:
>CAL BACKGROUND
CAL HI COEF
CAL LO COEF
RANGE AVG DIAGS ALARM
Calibrate CO Background The Calibrate CO Background screen is used to adjust the CO background,
or perform a “zero calibration”. Before performing a zero calibration, ensure
the analyzer samples zero air for at least 5 minutes.
Thermo Electron Corporation Model 48i Instruction Manual 3-23
Page 46
Operation
Calibration Menu
It is important to note the averaging time when calibrating. The longer the
averaging time, the more accurate the calibration will be. To be most
accurate, use the 300-second averaging time. For more information about
calibration, see Chapter 4, “Calibration”.
• In the Main Menu, choose Calibration > Cal CO Background.
•Press to set the new reading to zero.
• Press to return to the Calibration menu or to return to
the Run screen.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
CO BACKGROUND:
CO: 15.80
CURRENTLY: 0.0 ?
RANGE AVG DIAGS ALARM
SET CO TO ZERO
Calibrate CO Coefficient The Calibrate CO Coefficient screen is used to adjust the CO coefficient
and enter the span concentration. The display shows the current CO
concentration reading and the current CO range. The next line of the
display is where the CO calibration gas concentration is entered.
The CO span coefficient is calculated, stored, and used to correct the
current CO reading. For more information about calibration, see Chapter
4, “Calibration”. In dual or auto range modes, “High” or “Low” is displayed
to indicate the calibration of the high or low coefficient.
• In the Main Menu, choose Calibration > Cal CO
• Use and pushbuttons to move the cursor left or right.
• Use and to increment or decrement the numeric value.
•Press to calculate and save the new coefficient based on the
entered span concentration.
3-24 Model 48i Instruction Manual Thermo Electron Corporation
Coefficient.
Page 47
Operation
Calibration Menu
• Press to return to the Calibration menu or to return to
the Run screen.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
CALIBRATE CO:
CO: 15.80
SPAN CONC: 0001.000 ?
©ª CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
§¨ MOVE CURSOR
Zero/Span Check Menu The Zero/Span Check menu is available with the zero/span valve option. It
is used to program the instrument to perform fully automated zero and span
check or adjustments.
Note Zero and Span Calibration Reset are toggle items that change between
yes or no when selected, and present only if auto calibration is installed.
• In the Main Menu, choose Calibration > Zero/Span Check.
• Use and to move the cursor up and down.
• Press to accept the choice.
• Press to return to the Calibration menu or to return to
the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-25
Page 48
Operation
Calibration Menu
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
ZERO/SPAN CHECK:
>NEXT DATE/TIME
PERIOD HOURS 6
ZERO DURATION MIN 30
SPAN DURATION MIN 30
PURGE DURATION MIN 5
ZERO/SPAN AVG SEC 60
ZERO CAL RESET OFF
RANGE AVG DIAGS ALARM
SPAN CAL RESET OFF
ZERO/SPAN RATIO 1
ª
Next Date/Time The Next Date/Time screen is used to set the initial date and time of the
zero/span check. Once the initial zero/span check is performed, the date and
of the next zero/span check is calculated and displayed.
• In the Main Menu, choose Calibration > Zero/Span Check > Next
Date/Time.
• Use , , and to move and change the value of
the date and time.
•Press to accept a change.
• Press to return to the Zero/Span Check menu or to
return to the Run screen.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
NEXT DATE AND TIME:
19 MAR 2005 12:34
PRESS § TO EDIT
SETTING: DAYS
RANGE AVG DIAGS ALARM
¨
SET MONTHS
©ª
CHANGE VALUE
SAVE VALUE
3-26 Model 48i Instruction Manual Thermo Electron Corporation
Page 49
Operation
Calibration Menu
Period Hours The Zero/Span Period Hours screen defines the period or interval between
zero/span checks. Periods between 0 and 999 hours are acceptable. To turn
the zero/span check off, set the period to 0.
• In the Main Menu, choose Calibration > Zero/Span Check > Period
Hours.
• Use and to increment and decrement the numeric value.
•Press to save the period.
• Press to return to the Zero/Span Check menu or to
return to the Run screen.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
ZERO/SPAN PERIOD:
CURRENTLY: 120 HRS
SET TO: 200 HRS ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Zero/Span/Purge Duration
Minutes
The Zero Duration Minutes screen defines how long zero air is sampled by
the instrument. The span and purge duration screens look and function the
same way as the zero duration screen, and are used to set how long the span
gas and sample gas are sampled by the instrument. Durations between 0 and
30 minutes are acceptable. Each time a zero/span check occurs the zero
check is done first, followed by the span check. To perform just a zero
check, set the span duration screen to 0 (off). To perform just a span check,
set the zero duration screen to 0 (off).
• In the Main Menu, choose Calibration > Zero/Span Check > Zero,
Span or Purge Duration Min.
• Use and to increment and decrement the numeric value.
•Press to save the duration value.
Thermo Electron Corporation Model 48i Instruction Manual 3-27
Page 50
Operation
Calibration Menu
• Press to return to the Zero/Span Check menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
ZERO DURATION:
CURRENTLY: 5 MIN
SET TO: 20 MIN ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Zero/Span Averaging Time The Zero/Span Averaging Time screen allows the user to adjust the
zero/span averaging time. The following averaging times are available: 1, 2,
5, 10, 20, 30, 60, 90, 120, 180, 240, and 300 seconds.
• In the Main Menu, choose Calibration > Zero/Span Check > Zero/Span
Avg Sec.
• Use and for a list of choices.
• Press to save the averaging time.
• Press to return to the Zero/Span Check menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
ZERO/SPAN AVERAGING TIME:
CURRENTLY: 30 SEC
SET TO: 20 SEC ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
3-28 Model 48i Instruction Manual Thermo Electron Corporation
Page 51
Operation
Instrument Controls Menu
Zero/Span Ratio The Zero/Span Ratio screen is used to adjust the ratio of zeros to spans. For
example, if this value is set to 1, a span check will follow every zero check. If
this value is set to 3, there will be two zero checks between each zero/span
check. This value may be set from 1 to 10, with 1 as default.
• In the Main Menu, choose Calibration > Zero/Span Check >
Zero/Span Ratio.
• Use and to increment and decrement the numeric value.
•Press to save the ratio value.
• Press to return to the Zero/Span Check menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
ZERO/SPAN RATIO:
CURRENTLY: 1 :1
SET TO: 3 :1 ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Instrument Controls
Menu
The Instrument Controls menu contains a number of items. The software
controls listed in this menu enable control of the listed instrument
functions.
• In the Main Menu, choose Instrument Controls.
• Use and to move the cursor up and down.
• Press to accept the choice.
• Press to return to the Main Menu or to return to the Run
screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-29
Page 52
Operation
Instrument Controls Menu
Datalogging Settings The Datalogging Settings menu deals with datalogging.
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SAMPLE 12:34 ALARMx
INSTRUMENT CONTROLS:
>DATALOGGING SETTINGS
COMMUNICATION SETTINGS
I/O CONFIGURATION
TEMPERATURE COMPENSATION
PRESSURE COMPENSATION
SCREEN CONTRAST
SERVICE MODE
RANGE AVG DIAGS ALARM
DATE/TIME
ª
• In the Main Menu, choose Instrument Controls > Datalogging
Settings.
• Use and to move the cursor up and down.
•Press to select a choice.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
DATALOGGING SETTINGS:
>SELECT SREC/LREC SREC
VIEW LOGGED DATA
ERASE LOG
SELECT CONTENT
COMMIT CONTENT
RESET TO DEFAULT CONTENT
CONFIGURE DATA LOGGING
RANGE AVG DIAGS ALARM
3-30 Model 48i Instruction Manual Thermo Electron Corporation
Page 53
Operation
Instrument Controls Menu
Select SREC/LREC The Select SREC/LREC is used to select short record or long record format
for other operations.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select SREC/LREC.
• Use and for a list of choices.
•Press to set record format.
• Press to return to the Datalogging Settings menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
SEL LOG TYPE TO CHANGE:
CURRENTLY: SREC
SET TO: LREC
©ª
CHANGE VAL
RANGE AVG DIAGS ALARM
ACCEPT
View Logged Data The View Logged Data screen is used to select records relative to current or
date/time filter type.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select SREC or LREC > View Logged Data.
• Use and for a list of choices.
•Press to set the filter type and continue to record selection menu.
Thermo Electron Corporation Model 48i Instruction Manual 3-31
Page 54
Operation
Instrument Controls Menu
Relative Record Filter The Relative Record Filter screen is used to select the starting record to
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SAMPLE 12:34 ALARMx
SELECT FILTER TYPE:
CURRENTLY: NRECS
SET TO: DT/TM
©ª
CHANGE VAL
RANGE AVG DIAGS ALARM
ACCEPT
display the number of records back to view.
• Use and to increment or decrement the numeric value.
•Press to set filter type in finding the starting record and continue
to record display menu.
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SAMPLE 12:34 ALARMx
RECORDS BACK FROM CURRENT:
START AT REC: 1000
©ª CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
§¨ MOVE CURSOR
Date/Time Filter The Date/Time Filter screen is used to view and change the system date and
time.
• Use and to increment or decrement the selected date
field.
•Use to advance to next date field.
3-32 Model 48i Instruction Manual Thermo Electron Corporation
Page 55
Operation
Instrument Controls Menu
•Press to set the date and time of the first record to be displayed
and continue to record display screen.
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SAMPLE 12:34 ALARMx
NEXT DATE AND TIME:
19 MAR 2005 12:34
©ª
CHG DAYS
¨
SET CURSOR TO MONTHS
ACCEPT AS SHOWN
RANGE AVG DIAGS ALARM
Record Display The Record Display screen (read only) displays the selected records.
• Use , , and to scroll left and right, up and
down.
•Press to return to the Datalogging Settings menu.
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SAMPLE 12:34 ALARMx
RECORDS BACK FROM CURRENT:
time date flags
17:43 03/18/05 dc0088900
17:43 03/18/05 dc0088900
17:43 03/18/05 dc0088900
17:43 03/18/05 dc0088900
©ª
PGUP/DN §¨ PAN L/R
RANGE AVG DIAGS ALARM
Erase Log The Erase Log is used to enter the Erasure Warning screen (read only).
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Erase Log.
Thermo Electron Corporation Model 48i Instruction Manual 3-33
Page 56
Operation
Instrument Controls Menu
•Press to commit change and return to the Datalogging Settings
menu.
• Press to return to the Datalogging Settings menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
SREC CHANGE:
**WARNING**
THIS SELECTION WILL
ERASE ALL SAVED DATA
FOR THIS RECORD TYPE
RANGE AVG DIAGS ALARM
TO CONTINUE
Select Content The Select Content submenu displays a list of record fields to use and a
submenu list of the analog output signal group choices to choose from.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content.
• Use and to move the cursor up and down.
•Press to select a choice.
• Press to return to the Datalogging Settings menu or to
return to the Run screen.
3-34 Model 48i Instruction Manual Thermo Electron Corporation
Page 57
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SAMPLE 12:34 ALARMx
RECORD FIELDS TO USE:
>FIELD 1 NO
FIELD 2 CO
FIELD 3 PRES
FIELD 4 PMTT
FIELD 5 INTT
FIELD 6 RCTT
FIELD 7 NONE
RANGE AVG DIAGS ALARM
FIELD 8 NONE
FIELD 9 NONE
FIELD 10 NONE
FIELD 11 NONE
FIELD 12 NONE
FIELD 13 NONE
FIELD 14 NONE
FIELD 15 NONE
FIELD 16 NONE
FIELD 17 NONE
FIELD 18 NONE
FIELD 19 NONE
FIELD 20 NONE
FIELD 21 NONE
FIELD 22 NONE
FIELD 23 NONE
FIELD 24 NONE
FIELD 25 NONE
FIELD 26 NONE
FIELD 27 NONE
FIELD 28 NONE
FIELD 29 NONE
FIELD 30 NONE
FIELD 31 NONE
FIELD 32 NONE
ª
Operation
Instrument Controls Menu
Choose Item Type The Choose Item Type submenu is a list of the type of data that can be
logged for the current field. Choices are Concentrations, Other
Measurements, and Analog Inputs (if the I/O expansion board is installed).
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content > Field 1-32.
• Use and to move the cursor up and down.
•Press to select a choice.
Thermo Electron Corporation Model 48i Instruction Manual 3-35
Page 58
Operation
Instrument Controls Menu
• Press to return to the Datalogging Settings menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
DATA IN SREC FIELD 1:
CONCENTRATIONS
OTHER MEASUREMENTS
ANALOG INPUTS
RANGE AVG DIAGS ALARM
Concentrations The Concentrations screen allows the user to select the output signal that is
tied to the selected field item. The selected item is shown by “<--” after it.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content > Select Field > Concentrations.
• Use and to move the cursor up and down.
• Press to select a new choice.
• Press to return to the Choose Item Type submenu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
CONCENTRATIONS:
>NONE
CO <--
RANGE STATUS
RANGE AVG DIAGS ALARM
3-36 Model 48i Instruction Manual Thermo Electron Corporation
Page 59
Operation
Instrument Controls Menu
Other Measurements The Other Measurements screen allows the user to select the output signal
that is tied to the selected field item. The selected item is shown by “<--”
after it.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content > Select Field > Other Measurements.
• Use and to move the cursor up and down.
• Press to select a new choice.
• Press to return to the Choose Item Type submenu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
OTHER MEASUREMENTS:
>NONE
S/R <--
INTERNAL TEMP
CHAMBER TEMP
CHAMBER PRES
SAMPLE FLOW
INTENSITY
RANGE AVG DIAGS ALARM
ª
MOTOR SPEED
Analog Inputs The Analog Inputs screen allows the user to select the output signal that is
tied to the selected streaming data item. The selected item is shown by “<--”
after it.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content > Select Field > Analog Inputs.
• Use and to move the cursor up and down.
• Press to select a new choice.
• Press to return to the Choose Item Type submenu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-37
Page 60
Operation
Instrument Controls Menu
Configure Datalogging The Configure Datalogging menu deals with datalogging configuration.
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SAMPLE 12:34 ALARMx
ANALOG INPUTS:
>NONE
INPUT 1 <--
INPUT 2
INPUT 3
INPUT 4
INPUT 5
INPUT 6
RANGE AVG DIAGS ALARM
INPUT 7
INPUT 8
ª
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Configure Datalogging.
• Use and for a list of choices.
•Press to select a choice.
• Press to return to the Datalogging Settings menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
DATALOGGING SETTINGS:
>LOGGING PERIOD MIN OFF
MEMORY ALLOCATION % 50
DATA TREATMENT AVG
RANGE AVG DIAGS ALARM
3-38 Model 48i Instruction Manual Thermo Electron Corporation
Page 61
Operation
Instrument Controls Menu
Select Logging Period The Select Logging Period screen is used to select the logging period in
minutes for the record format (srec or lrec). List of choices include: off, 1
(default), 5, 15, 30, and 60.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Configure Datalogging > Select Logging Period.
• Use and for a list of choices.
•Press to set the logging period.
• Press to return to the Configure Datalogging menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
SET PERIOD FOR SREC:
CURRENTLY: OFF MIN
SET TO: 60 MIN ?
©ª
CHANGE VALUE
RANGE AVG DIAGS ALARM
SAVE
Memory Allocation Percent The Memory Allocation Percent screen is used to select the percentage of
each record type for both srecs and lrecs. Percentages between 0 and 100%
are available in increments of 10. This screen results in log erasure for both
srecs and lrecs.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Configure Datalogging > Memory Allocation %.
• Use and for a list of choices.
•Press to set the percentage for both record types and proceed to
the erasure warning screen.
• Press to return to the Configure Datalogging menu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-39
Page 62
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
SET PERCENT SRECS:
CURRENTLY: 50 %
SET TO: 100 % ?
©ª
CHANGE VALUE
RANGE AVG DIAGS ALARM
SAVE
Data Treatment The Data Treatment screen is used to select the data treatment for the
selected record type: whether the data should be averaged over the interval,
the minimum or maximum used, or the current value logged.
• In the Main Menu, choose Instrument Controls > Datalogging Settings
> Configure Datalogging > Data Treatment.
• Use and for a list of choices.
•Press to set the data treatment.
• Press to return to the Configure Datalogging menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
SET DATA TREATMENT:
CURRENTLY: AVG
SET TO: CUR ?
©ª CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
3-40 Model 48i Instruction Manual Thermo Electron Corporation
Page 63
Operation
Instrument Controls Menu
Communication Settings The communication Settings menu is used with communications control
and configuration.
• In the Main Menu, choose Instrument Controls> Communication
Settings.
• Use and to move the cursor up and down.
•Press to accept a choice.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
COMMUNICATION SETTINGS:
>BAUD RATE
INSTRUMENT ID
COMMUNICATION PROTOCOL
STREAMING DATA CONFIG
RS-232/RS-485 SELECTION
TCP/IP SETTINGS
RANGE AVG DIAGS ALARM
Baud Rate The Baud Rate screen is used to set the RS-232/RS-485 interface baud rate.
Baud rates of 1200, 2400, 4800, and 9600, 19200, 38400, 57600, and
115200 are available.
• In the Main Menu, choose Instrument Controls > Communication
Settings > Baud Rate.
• Use and for a list of choices.
•Press to save the new baud rate.
• Press to return to the Communication Settings menu or
to return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-41
Page 64
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
BAUD RATE:
CURRENTLY: 9600
SET TO: 57600 ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Instrument ID The Instrument ID screen allows the operator to edit the instrument ID.
The ID is used to identify the instrument when using the C-Link or
MODBUS protocols to control the instrument or collect data. It may be
necessary to edit the ID number if two or more of the same instrument are
connected to one computer. Valid Instrument ID numbers are from 0 to
127. The Model 48i has a default Instrument ID of 48. For more
information about the Instrument ID, see Appendix B “C-Link Protocol
Commands” or Appendix C “MODBUS Protocol”.
• In the Main Menu, choose Instrument Controls > Communication
Settings > Instrument ID.
• Use and to increment or decrement the ID value.
•Press to save the new instrument ID.
• Press to return to the Communication Settings menu or
to return to the Run screen.
3-42 Model 48i Instruction Manual Thermo Electron Corporation
Page 65
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
INSTRUMENT ID:
CURRENTLY: 48
SET TO: 50 ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Communication Protocol The Communication Protocol screen, is used to change the instrument
communication protocol for serial communications.
• In the Main Menu, choose Instrument Controls > Communication
Settings > Communication Protocol.
• Use and for a list of choices.
•Press to save the new protocol.
• Press to return to the Communication Settings menu or
to return to the Run screen.
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SAMPLE 12:34 ALARMx
COMMUNICATION PROTOCOL:
CURRENTLY: CLINK
SET TO: STREAMING ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Streaming Data Configuration The Streaming Data Configuration is used to allow for configuration of the
streaming data output.
Thermo Electron Corporation Model 48i Instruction Manual 3-43
Page 66
Operation
Instrument Controls Menu
Note Add Labels and Prepend Timestamp are toggle items that change
between yes or no when selected.
• In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Communication Settings menu or
to return to the Run screen.
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SAMPLE 12:34 ALARMx
STREAMING DATA CONFIG:
>INTERVAL 10 SEC
ADD LABELS NO
PREPEND TIMESTAMP YES
ITEM 1 CO
ITEM 2 INTT
ITEM 3 CHT
ITEM 4 PRES
RANGE AVG DIAGS ALARM
ª
ITEM 5 SMPLFL
ITEM 6 NONE
ITEM 7 NONE
ITEM 8 NONE
ITEM 9 NONE
ITEM 10 NONE
ITEM 11 NONE
ITEM 12 NONE
ITEM 13 NONE
ITEM 14 NONE
ITEM 15 NONE
ITEM 16 NONE
ITEM 17 NONE
ITEM 18 NONE
Streaming Data Interval The Streaming Data Interval screen is used to adjust the streaming data
interval. The following interval times are available: 1, 2, 5, 10, 20, 30, 60,
90, 120, 180, 240, and 300 seconds.
• In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Streaming Data Interval.
3-44 Model 48i Instruction Manual Thermo Electron Corporation
Page 67
Operation
Instrument Controls Menu
• Use and for a list of choices.
• Press to save the new streaming data period.
• Press to return to the Streaming Data Config menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
STREAMING DATA INTERVAL:
CURRENTLY: 30 SEC
SET TO: 10 SEC ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Choose Item Signal The Choose Signal screen displays a submenu list of the analog output
signal group choices. Group choices are Concentrations, Other
Measurements, and Analog Inputs (if the I/O expansion board is installed).
• In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Item 1-18.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Streaming Data Config submenu or
to return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-45
Page 68
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
CHOOSE ITEM SIGNAL:
CONCENTRATIONS
OTHER MEASUREMENTS
ANALOG INPUTS
RANGE AVG DIAGS ALARM
Concentrations The Concentrations screen allows the user to select the output signal that is
tied to the selected streaming data item. The selected item is shown by “<--”
after it.
• In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Select Item > Concentrations.
• Use and to move the cursor up and down.
• Press to select a new choice.
• Press to return to the Choose Item Signal submenu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
CONCENTRATIONS:
>NONE
CO <--
RANGE STATUS
RANGE AVG DIAGS ALARM
3-46 Model 48i Instruction Manual Thermo Electron Corporation
Page 69
Operation
Instrument Controls Menu
Other Measurements The Other Measurements screen allows the user to select the output signal
that is tied to the selected streaming data item. The selected item is shown
by “<--” after it.
• In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Select Item > Other
Measurements.
• Use and to move the cursor up and down.
• Press to select a new choice.
• Press to return to the Choose Item Signal submenu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
OTHER MEASUREMENTS:
>NONE
S/R <--
INTERNAL TEMP
CHAMBER TEMP
CHAMBER PRES
SAMPLE FLOW
INTENSITY
RANGE AVG DIAGS ALARM
ª
MOTOR SPEED
Analog Inputs The Analog Inputs screen allows the user to select the output signal that is
tied to the selected streaming data item. The selected item is shown by “<--”
after it.
• In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Select Item > Analog Inputs.
• Use and to move the cursor up and down.
• Press to select a new choice.
• Press to return to the Choose Item Signal submenu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-47
Page 70
Operation
Instrument Controls Menu
RS-232/RS-485 Selection The RS-232/RS-485 Selection screen allows the user to choose between the
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SAMPLE 12:34 ALARMx
ANALOG INPUTS:
>NONE
INPUT 1 <--
INPUT 2
INPUT 3
INPUT 4
INPUT 5
INPUT 6
RANGE AVG DIAGS ALARM
INPUT 7
INPUT 8
ª
RS-232 or RS-485 protocols for serial communication.
WARNING Disconnect the serial cable before changing RS-232 and RS-485
selection to prevent damage to the connected equipment.
• In the Main Menu, choose Instrument Controls > Communication
Settings > RS-232/RS-485 Selection.
•Press to leave the warning screen and toggle RS-232 or RS-485.
• Use to confirm and save the new selection change.
• Press to return to the Communication Settings menu or
to return to the Run screen.
3-48 Model 48i Instruction Manual Thermo Electron Corporation
Page 71
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SAMPLE 12:34 ALARMx
RS-232/RS-485 SELECTION:
XXXXXX** WARNING **XXXXXXX
DISCONNECT THE SERIALX X
CABLES BEFORE CHANGING X
THE SELECTION!XXXXXX
RANGE AVG DIAGS ALARM
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SAMPLE 12:34 ALARMx
RS-232/RS-485 SELECTION:
CURRENTLY: RS-232
SET TO: RS-485 ?
MAKE SURE THAT THE CABLEXX
IS OFF: PRESS ¨ TO CONFIRM
RANGE AVG DIAGS ALARM
TO CONTINUE
TOGGLE VALUE
Operation
Instrument Controls Menu
TCP/IP Settings The TCP/IP Settings menu is used for defining TCP/IP settings.
WARNING The instrument power must be cycled after this parameter has
been changed for the change to take effect.
• In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings.
• Use and to move the cursor up and down.
•Press to select a choice.
• Press to return to the Communication Settings menu or
to return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-49
Page 72
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
TCP/IP SETTINGS:
>USE DHCP OFF
IP ADDRESS 192.168.1.15
NETMASK 255.255.255.0
GATEWAY 192.168.1.1
HOST NAME
RANGE AVG DIAGS ALARM
Use DHCP The Use DHCP screen is used to specify whether to use DHCP or not.
• In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > Use DCHP.
•Press to toggle and set DHCP on or off.
• Press to return to the TCP/IP Settings menu or to return
to the Run screen.
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SAMPLE 12:34 ALARMx
DHCP:
CURRENTLY: OFF
SET TO: ON ?
CYCLE POWER TO CHANGE DHCP
RANGE AVG DIAGS ALARM
TOGGLE VALUE
IP Address The IP Address is used to edit the IP address.
• In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > IP Address.
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Page 73
Operation
Instrument Controls Menu
• Use , , and to move and change the value of
the IP address.
•Press to save the new address.
• Press to return to the TCP/IP Settings menu or to return
to the Run screen.
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SAMPLE 12:34 ALARMx
IP ADDRESS:
CURRENT: 192.168.001.015
SET TO: 192.168.001.015
©ª CHANGE VALUE
RANGE AVG DIAGS ALARM
§¨
MOVE CURSOR
SAVE
Netmask The Netmask screen is used to edit the netmask.
• In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > Netmask.
• Use , , and to move and change the value of
the netmask.
•Press to save the new netmask.
• Press to return to the TCP/IP Settings menu or to return
to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-51
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Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
NETMASK:
CURRENT: 255.255.255.000
SET TO: 255.255.255.000
©ª CHANGE VALUE
RANGE AVG DIAGS ALARM
§¨
MOVE CURSOR
SAVE
Gateway The Gateway screen is used to edit the gateway address.
• In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > Gateway.
• Use , , and to move and change the value of
the gateway address.
•Press to save the new address.
• Press to return to the TCP/IP Settings menu or to return
to the Run screen.
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SAMPLE 12:34 ALARMx
GATEWAY:
CURRENT: 000.000.000.000
SET TO: 192.168.001.001
©ª CHANGE VALUE
RANGE AVG DIAGS ALARM
§¨
MOVE CURSOR
SAVE
Host Name The host name screen is used to edit the host name. When DHCP is
enabled, this name is reported to the DHCP server.
3-52 Model 48i Instruction Manual Thermo Electron Corporation
Page 75
Operation
Instrument Controls Menu
• In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > Host Name.
• Use , , and to move the cursor or change
between the edit field and the alpha page.
•Press to save the new letter in the alpha table or save the new
alpha page.
•Press to return to the TCP/IP Settings menu or to return
to the Run screen.
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SAMPLE 12:34 ALARMx
HOST NAME:
CURRENTLY:
AS SSSSSSSSSS
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
I/O Configuration The I/O Configuration menu deals with configuration of the analyzer’s I/O
system.
• In the Main Menu, choose Instrument Controls > I/O Configuration.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-53
Page 76
Operation
Instrument Controls Menu
Output Relay Settings The Output Relay Settings menu displays a list of the analog output relays
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SAMPLE 12:34 ALARMx
I/O CONFIGURATION:
>OUTPUT RELAY SETTINGS
DIGITAL INPUT SETTINGS
ANALOG OUTPUT CONFIG
ANALOG INPUT CONFIG
RANGE AVG DIAGS ALARM
available, and allows the user to select the instrument parameter or logic
state to change for the relay selected.
Note The digital outputs may take up to one second after the assigned state
occurs to show up on the outputs.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Output Relay Settings > 1-10.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the I/O Configuration menu or to
return to the Run screen.
3-54 Model 48i Instruction Manual Thermo Electron Corporation
Page 77
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SAMPLE 12:34 ALARMx
OUTPUT RELAY SETTINGS:
>1 NOP CONC ALARM
2 NOP LOCAL/REMOTE
3 NOP UNITS
4 NOP GEN ALARM
5 NOP NONE
6 NOP NONE
7 NOP CO MODE
RANGE AVG DIAGS ALARM
8 NOP NONE
9 NOP NONE
10 NOP NONE
ª
Operation
Instrument Controls Menu
Logic State The Logic State screen is used to change the I/O relay to either normally
open or normally closed.
•Press to toggle and set the logic state between open and closed.
• Press to return to the Output Relay Settings menu or to
return to the Run screen.
XXLO WCONCENTRATIONXXLO W
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SAMPLE 12:34 ALARMx
OUTPUT RELAY SETUP:
>LOGIC STATE OPEN
INSTRUMENT STATE NOALM
RANGE AVG DIAGS ALARM
Instrument State The Instrument State submenu allows the user to select the instrument state
that is tied to the selected relay output. A submenu lists signal types of
either alarm and non-alarm to choose from.
Thermo Electron Corporation Model 48i Instruction Manual 3-55
Page 78
Operation
Instrument Controls Menu
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Output Relay Settings > Select Relay > Instrument State.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Output Relay Setup menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
CHOOSE SIGNAL TYPE:
>ALARMS
NON-ALARM
RANGE AVG DIAGS ALARM
Alarms The Alarms status screen allows the user to select the alarm status for the
selected relay output. The selected item is shown by “<--” after it.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Output Relay Settings > Select Relay > Instrument State > Alarms.
• Use and for a list of choices.
• Press to save the new selection for the relay.
• Press to return to the Instrument State submenu or to
return to the Run screen.
3-56 Model 48i Instruction Manual Thermo Electron Corporation
Page 79
XHIGH RANGE CONCENTRATIONW
CO 15.80 PPM
SAMPLE 12:34 ALARMx
ALARM STATUS ITEMS:
>NONE
GEN ALARM <--
HI CO CONC
LO CO CONC
INT TEMP
BENCH TEMP
PRESSURE
RANGE AVG DIAGS ALARM
FLOW
INTENSITY
MOTOR SPEED
BIAS VOLTAGE
MB STATUS
MIB STATUS
I/O BD STATUS
CONC ALARM
ª
Operation
Instrument Controls Menu
Non-Alarm The Non-Alarm status screen allows the user to select the non-alarm status
for the selected relay output. The selected item is shown by “<--” after it.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Output Relay Settings > Relay 1-10 > Instrument State > Non-Alarm.
• Use and for a list of choices.
• Press to save the new selection for the relay.
• Press to return to the Instrument State submenu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-57
Page 80
Operation
Instrument Controls Menu
Digital Input Settings The Digital Input Settings menu displays a list of the digital inputs
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SAMPLE 12:34 ALARMx
NON ALARM STATUS ITEMS:
>NONE
AUTORANGE <--
LOCAL/REMOTE
SERVICE
UNITS
ZERO MODE
SPAN MODE
RANGE AVG DIAGS ALARM
SAMPLE MODE
CO MODE
ª
available, and allows the user to select the instrument parameter or logic
state to change for the relay selected.
Note The digital inputs must be asserted for at least one second for the
action to be activated.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Digital Input Settings > 1-16.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the I/O Configuration menu or to
return to the Run screen.
3-58 Model 48i Instruction Manual Thermo Electron Corporation
Page 81
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SAMPLE 12:34 ALARMx
DIGITAL INPUT SETTINGS:
>1 NOP CO MODE
2 NOP SET BACKGROUND
3 NOP CAL TO SPAN
4 NOP AOUTS TO ZERO
5 NOP AOUTS TO FS
6 NOP NONE
7 NOP NONE
RANGE AVG DIAGS ALARM
8 NOP NONE
9 NOP NONE
10 NOP NONE
11 NOP NONE
12 NOP NONE
13 NOP NONE
14 NOP NONE
15 NOP NONE
16 NOP NONE
ª
Operation
Instrument Controls Menu
Logic State The Logic State screen is used to change the I/O relay to either normally
open or normally closed. The default state is open, which indicates that a
relay connected between the digital input pin and ground is normally open
and closes to trigger the digital input action. If nothing is connected to the
digital input pin, the state should be left at open to prevent the action from
being triggered.
•Press to toggle and set the logic state open or closed.
• Press to return to the Digital Input Settings menu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-59
Page 82
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
DIGITAL INPUT SETUP:
>LOGIC STATE OPEN
INSTRUMENT STATE NOALM
RANGE AVG DIAGS ALARM
Instrument State The Instrument State screen allows the user to select the instrument state
that is tied to the selected digital input.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Digital Input Settings > Select Relay > Instrument State.
• Use and for a list of choices.
• Press to save the new selection for the relay.
• Press to return to the Digital Intput Settings menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
CHOOSE ACTION:
>NONE <--
CO MEASURE MODE
ZERO GAS
SPAN GAS
INITIATE ZERO CHECK
INITIATE SPAN CHECK
SET BACKGROUND
RANGE AVG DIAGS ALARM
ª
AUTOCAL TO SPAN
SET ANALOG OUT ZERO
SET ANALOG OUT FS
3-60 Model 48i Instruction Manual Thermo Electron Corporation
Page 83
Operation
Instrument Controls Menu
Analog Output Configuration The Analog Output Configuration menu displays a list of the analog output
channels available for configuration. Configuration choices include
selecting range, setting minimum/maximum values, and choosing signal to
output.
Note The current outputs are displayed only if the I/O expansion board
option is installed.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Output Config.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the I/O Configuration menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
SELECT OUTPUT CHANNEL:
>ALL VOLTAGE CHANNELS
ALL CURRENT CHANNELS
VOLTAGE CHANNEL 1
VOLTAGE CHANNEL 2
VOLTAGE CHANNEL 3
VOLTAGE CHANNEL 4
VOLTAGE CHANNEL 5
RANGE AVG DIAGS ALARM
VOLTAGE CHANNEL 6
CURRENT CHANNEL 1
CURRENT CHANNEL 2
CURRENT CHANNEL 3
CURRENT CHANNEL 4
CURRENT CHANNEL 5
CURRENT CHANNEL 6
ª
Thermo Electron Corporation Model 48i Instruction Manual 3-61
Page 84
Operation
Instrument Controls Menu
Select Output Range The Select Output Range screen is used to select the hardware range for the
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SAMPLE 12:34 ALARMx
ANALOG OUTPUT CONFIG:
>SELECT RANGE
SET MINIMUM VALUE
SET MAXIMUM VALUE
CHOOSE SIGNAL TO OUTPUT
RANGE AVG DIAGS ALARM
selected analog output channel. Possible ranges for the voltage outputs are:
0-100 mV, 0-1, 0-5, 0-10 V.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Output Config > Select Channel > Select Range.
• Use and to move the cursor up and down.
• Press to save the new range.
• Press to return to the Analog Output Configuration menu or
to return to the Run screen.
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SAMPLE 12:34 ALARMx
SELECT OUTPUT RANGE:
SELECTED OUTPUT: V ALL
CURRENTLY: 0-10V
SET TO: 0-5V ?
©ª
CHANGE VALUE
RANGE AVG DIAGS ALARM
SAVE
3-62 Model 48i Instruction Manual Thermo Electron Corporation
Page 85
Operation
Instrument Controls Menu
Minimum and Maximum Value The MinimumValue screen is used to edit the zero (0) to full-scale (100)
value in percentages for the selected analog output channel. See Table 3-6
for a list of choices. The minimum and maximum output value screens
function the same way. The example below shows the set minimum value
screen.
• In the Main Menu, choose Instrument Controls > IO Configuration >
Analog Output Config > Select Channel > Set Minimum or Maximum
Val ue .
• Use and to increment or decrement the numeric value.
• Press to validate and save the new minimum value.
• Press to return to the Analog Output Configuration menu or
to return to the Run screen.
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SAMPLE 12:34 ALARMx
MINIMUM OUTPUT PERCENT:
SELECTED OUTPUT: V ALL
CURRENTLY: N/A %
SET TO: 0000.5 % ?
©ª
CHANGE VALUE
RANGE AVG DIAGS ALARM
SAVE
Table 3-6. Analog Output Zero to Full-Scale Table
Output Zero % Value Full-Scale 100% Value
CO Zero (0) Range Setting
LO CO Zero (0) Range Setting
HI CO Zero (0) Range Setting
Range Status (NOx) Recommend not to change the setting for this output
S/R Ratio 0.0 1.2
LO S/R Ratio 0.0 1.2
HI S/R Ratio 0.0 1.2
Internal Temp User-set alarm min value User-set alarm max value
Thermo Electron Corporation Model 48i Instruction Manual 3-63
Page 86
Operation
Instrument Controls Menu
Table 3-6. Analog Output Zero to Full-Scale Table
Output Zero % Value Full-Scale 100% Value
Bench Temp User-set alarm min value User-set alarm max value
Pressure User-set alarm min value User-set alarm max value
Sample Flow User-set alarm min value User-set alarm max value
Intensity User-set alarm min value User-set alarm max value
Motor Speed User-set alarm min value User-set alarm max value
Everything Else 0 units 10 units
Choose Signal Type To Output The Choose Signal Type To Output screen displays a submenu list of the
analog output signal group choices. Group choices are Concentrations,
Other Measurements, and Analog Inputs (if the I/O expansion board is
installed). This allows the user to select the output signal to the selected
output channel. The Concentrations screen is shown below. See Table 3-7
below for a list of items for each signal group choice.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Output Config > Select Channel > Choose Signal To Output.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Analog Output Config menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
CHOOSE SIGNAL TYPE:
CONCENTRATIONS
OTHER MEASUREMENTS
ANALOG INPUT
RANGE AVG DIAGS ALARM
3-64 Model 48i Instruction Manual Thermo Electron Corporation
Page 87
Instrument Controls Menu
Table 3-7. Signal Types
Concentrations Other Measurements Analog Inputs
None None None
CO (single range mode only) Sample/Reference Analog Input 1
LO CO (dual/auto range only) LO Sample/Reference Analog Input 2
HI CO (dual/auto range only) HI Sample/Reference Analog Input 3
Range Status Internal Temperature Analog Input 4
Bench Temperature Analog Input 5
Aux Temperature Analog Input 6
Bench Pressure Analog Input 7
Sample Flow Analog Input 8
Intensity
Motor Speed
Operation
Analog Input Configuration The Analog Input Configuration menu displays a list of the analog input
channels available for configuration. Configuration includes entering
descriptor, units, decimal places, and choice of table points.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the I/O Configuration menu or to
return to the Run screen.
Note The current outputs are only displayed if the I/O expansion board
option is installed.
Thermo Electron Corporation Model 48i Instruction Manual 3-65
Page 88
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
ANALOG INPUT CHANNELS:
>CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
CHANNEL 5
CHANNEL 6
CHANNEL 7
RANGE AVG DIAGS ALARM
CHANNEL 8
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SAMPLE 12:34 ALARMx
ANALOG INPUT 01 CONFIG:
>DESCRIPTOR IN1
UNITS V
DECIMAL PLACES 2
TABLE POINTS 2
POINT 1
POINT 2
POINT 3
RANGE AVG DIAGS ALARM
ª
ª
POINT 4
POINT 5
POINT 6
POINT 7
POINT 8
POINT 9
POINT 10
Descriptor The Descriptor screen allows the user to enter the descriptor for the selected
analog input channel. The descriptor is used in datalogging and streaming
data to report what data is being sent out. The descriptor may be from 1 to
3 characters in length, and defaults to IN1to IN8 (user input channel
number).
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Channel > Descriptor.
3-66 Model 48i Instruction Manual Thermo Electron Corporation
Page 89
Operation
Instrument Controls Menu
• Press to save the new descriptor.
• Press to return to the Analog Input Config menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
ANALOG INPUT DESCRIPTOR:
ASSSSSSSSSSSS
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
Units The Units screen allows the user to enter the units for the selected analog
input channel. The units are displayed on the diagnostic screen and in
datalogging and streaming data. The units may be from 1 to 3 characters in
length, and defaults to V (volts).
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Channel > Units.
• Press to save the new value.
• Press to return to the Analog Input Config menu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-67
Page 90
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
ANALOG INPUT UNITS:
ASSSSSSSSSSSS
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
Decimal Places The Decimal Places screen allows the user to select how many digits are
displayed to the right of the decimal, from 0 to 6, with a default of 2.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Channel > Decimal Places.
• Use and to increment or decrement the value.
• Press to save the new value.
• Press to return to the Analog Input Config menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
DECIMAL PLACES:
CURRENTLY: 2
SET TO: 3 ?
RANGE AVG DIAGS ALARM
©ª
INC/DEC
SAVE VALUE
Number of Table Points The Number of Table Points screen allows the user to select how many
points are used in the conversion table. The points range from 2 to 10, with
a default of 2.
3-68 Model 48i Instruction Manual Thermo Electron Corporation
Page 91
Operation
Instrument Controls Menu
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Channel > Table Points.
• Use and to move the cursor up and down.
• Press to save the new value.
• Press to return to the Analog Input Config menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
NUMBER OF TABLE POINTS:
CURRENTLY: 2
SET TO: 10 ?
RANGE AVG DIAGS ALARM
©ª
INC/DEC
SAVE VALUE
Table Point The Table Point submenu allows the user to set up an individual table
point.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Table Point 1-10.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Analog Input Config menu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-69
Page 92
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
TABLE POINT 01 CONFIG:
>VOLTS 5.00
USER VALUE 10.800
RANGE AVG DIAGS ALARM
Volts The Volts screen allows the user to set the input voltage for the selected table
point in the conversion table, from 0.00 to 10.50. The default table is a
two-point table with point 1: 0.00 V = 000.0 U and point 2: 10.00 V = 10.0
U.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Table Point > Vol ts .
• Use and to move the cursor up and down.
• Press to save the new value.
• Press to return to the Table Point submenu or to return
to the Run screen.
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SAMPLE 12:34 ALARMx
TABLE POINT 01 VOLTS:
CURRENTLY: 5.00
SET TO: 8.00 ?
RANGE AVG DIAGS ALARM
©ª
INC/DEC
SAVE VALUE
3-70 Model 48i Instruction Manual Thermo Electron Corporation
Page 93
Instrument Controls Menu
User Value The User Value screen allows the user to set the output value for the
corresponding input voltage for the selected table point in the conversion
table, from -999.9 to 999.9. The default table is a two-point table with
point 1: 0.00 V = 000.0 U and point 2: 10.00 V = 10.0 U.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Table Point > User Value.
• Use and to move the cursor up and down.
• Press to save the new value.
• Press to return to the Table Point submenu or to return
to the Run screen.
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SAMPLE 12:34 ALARMx
TABLE POINT 01 USER VAL:
CURRENTLY: 10.800
SET TO: 00.00 ?
RANGE AVG DIAGS ALARM
©ª
INC/DEC
SAVE VALUE
Operation
Temperature
Compensation
Temperature compensation provides compensation for any changes to the
instrument's output signal due to internal instrument temperature
variations. The effects of internal instrument temperature changes on the
analyzer's subsystems and output have been empirically determined. This
empirical data is used to compensate for any changes in temperature. This
compensation can be used for special applications, or when operating the
instrument outside the recommended temperature range, even though the
Model 48i does not require temperature compensation for EPA equivalency.
When temperature compensation is on, the display shows the current
internal instrument temperature (measured by a thermistor on the Interface
board). When temperature compensation is off, the display shows the
factory standard temperature of 25 °C.
Thermo Electron Corporation Model 48i Instruction Manual 3-71
Page 94
Operation
Instrument Controls Menu
• In the Main Menu, choose Instrument Controls > Temperature
Compensation.
•Press to toggle the temperature compensation on or off.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
TEMPERATURE COMPENSATION:
COMP TEMP: 30.0
CURRENTLY: OFF
SET TO: ON ?
RANGE AVG DIAGS ALARM
TOGGLE VALUE
o
C
Pressure Compensation Pressure compensation provides compensation for any changes to the
instrument's output signal due to reaction chamber pressure variations. The
effects of reaction chamber pressure changes on the analyzer's subsystems
and output have been empirically determined. This empirical data is used to
compensate for any change in reaction chamber pressure. This
compensation can be used even though the Model 48i does not require
pressure compensation for EPA equivalency.
When pressure compensation is on, the display represents the current
pressure in the fluorescence chamber. When pressure compensation is off,
the display shows the factory standard pressure of 750 mmHg.
• In the Main Menu, choose Instrument Controls > Pressure
Compensation.
•Press to toggle the temperature compensation on or off.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
3-72 Model 48i Instruction Manual Thermo Electron Corporation
Page 95
Operation
Instrument Controls Menu
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SAMPLE 12:34 ALARMx
PRESSURE COMPENSATION:
COMP PRES: 750.0 mmHg
CURRENTLY: OFF
SET TO: ON ?
RANGE AVG DIAGS ALARM
TOGGLE VALUE
Screen Contrast The Screen Contrast screen is used to change the contrast of the display.
Intensities between 0 and 100% in increments of 10 are available. Changing
the screen contrast may be necessary if the instrument is operated at extreme
temperatures.
• In the Main Menu, choose Instrument Controls > Screen Contrast.
• Use and to increment or decrement the screen contrast.
•Press to accept a change.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
SCREEN CONTRAST:
CURRENTLY: 50 %
SET TO: 60 % ?
RANGE AVG DIAGS ALARM
©ª
CHANGE VALUE
SAVE VALUE
Thermo Electron Corporation Model 48i Instruction Manual 3-73
Page 96
Operation
Instrument Controls Menu
Service Mode The Service Mode screen is used to turn the service mode on or off. The
service mode locks out any remote actions and includes parameters and
functions that are useful when making adjustments or diagnosing the Model
48i. For more information about the service mode, see “Service Menu” later
in this chapter.
Note The service mode should be turned off when finished, as it prevents
remote operation.
• In the Main Menu, choose Instrument Controls > Service Mode.
•Press to toggle and set the service mode on or off.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
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SAMPLE 12:34 ALARMx
SERVICE MODE:
CURRENTLY: OFF
SET TO: ON ?
RANGE AVG DIAGS ALARM
TOGGLE VALUE
Date/Time The Date/Time screen and allows the user to view and change the system
date and time (24-hour format). The internal clock is powered by its own
battery when instrument power is off.
• In the Main Menu, choose Instrument Controls > Date/Time.
• Use , , and to move and change the value of
the date and time.
•Press to save the new date and time.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
3-74 Model 48i Instruction Manual Thermo Electron Corporation
Page 97
Diagnostics Menu
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SAMPLE 12:34 ALARMx
NEXT DATE AND TIME:
19 MAR 2005 12:34
©ª
CHG DAYS
¨
SET CURSOR TO MONTHS
ACCEPT AS SHOWN
RANGE AVG DIAGS ALARM
Diagnostics Menu The Diagnostics menu provides access to diagnostic information and
functions. This menu is useful when troubleshooting the instrument.
Operation
• In the Main Menu, choose Instrument Controls > Diagnostics.
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Instrument Controls menu or to
return to the Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-75
Page 98
Operation
Diagnostics Menu
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SAMPLE 12:34 ALARMx
DIAGNOSTICS:
>PROGRAM VERSION
VOLTAGES
TEMPERATURES
PRESSURE
FLOW
SAMPLE/REF RATIO
AGC INTENSITY
RANGE AVG DIAGS ALARM
MOTOR SPEED
ANALOG INPUT READINGS
ANALOG INPUT VOLTAGES
DIGITAL INPUTS
RELAY STATES
TEST ANALOG OUTPUTS
INSTRUMENT CONFIGURATION
CONTACT INFORMATION
ª
Program Version The Program Version screen (read only) shows the version number of the
program installed. Prior to contacting the factory with any questions
regarding the instrument, please note the program version number.
• In the Main Menu, choose Diagnostics > Program Version.
• Press to return to the Diagnostics menu or to return to
the Run screen.
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SAMPLE 12:34 ALARMx
PROGRAM VERSION:
PRODUCT: MODEL 48i
VERSION: 01.00.00
RANGE AVG DIAGS ALARM
3-76 Model 48i Instruction Manual Thermo Electron Corporation
Page 99
Operation
Diagnostics Menu
Voltages The Voltages menu displays the current diagnostic voltage readings. This
screen enables the power supply to be quickly read for low or fluctuating
voltages without having to use a voltage meter. The I/O board item is only
displayed if the I/O expansion board is installed.
• In the Main Menu, choose Diagnostics > Vo lt ag es .
• Use and to move the cursor up and down.
• Press to select a choice.
• Press to return to the Diagnostics menu or to return to
the Run screen.
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SAMPLE 12:34 ALARMx
VOLTAGES:
>MOTHERBOARD
INTERFACE BOARD
I/O BOARD
RANGE AVG DIAGS ALARM
Motherboard Voltages The Motherboard screen (read only) is used to display the current voltage
readings on the motherboard.
• In the Main Menu, choose Diagnostics > Voltages > Motherboard
Vo lt a ge s.
• Press to return to the Voltages menu or to return to the
Run screen.
Thermo Electron Corporation Model 48i Instruction Manual 3-77
Page 100
Operation
Diagnostics Menu
Interface Board Voltages The Interface Board screen (read only) is used to display the current voltage
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SAMPLE 12:34 ALARMx
MOTHERBOARD VOLTAGES:
3.3 SUPPLY 3.3 V
5.0 SUPPLY 5.0 V
15.0 SUPPLY 15.3 V
24.0 SUPPLY 24.1 V
-3.3 SUPPLY -3.3 V
RANGE AVG DIAGS ALARM
readings on the interface board.
• In the Main Menu, choose Diagnostics > Voltages > Interface Board
Vo lt a ge s.
• Press to return to the Voltages menu or to return to the
Run screen.
XXLO WCONCENTRATIONXXLO W
CO 15.80 PPM
SAMPLE 12:34 ALARMx
INTERFACE BOARD VOLTAGES:
> 3.3 SUPPLY 3.3 V
5.0 SUPPLY 5.0 V
15.0 SUPPLY 15.0 V
24.0 SUPPLY 24.0 V
-15.0 SUPPLY -15.0 V
18.0 IR SUPPLY 18.0 V
18.0 MOT SUPPLY 18.0
RANGE AVG DIAGS ALARM
BIAS SUPPLY -110.0 V
ª
I/O Board Voltages The I/O Board screen (read only) is used to display the current voltage
readings on the I/O expansion board. This menu is only accessible if the I/O
expansion board is installed.
3-78 Model 48i Instruction Manual Thermo Electron Corporation
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