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Thermo Scientific 42i Instruction Manual
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Thermo Scientific 42i Instruction Manual

Chemiluminescence no-no2-nox analyzer
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Model 42i
Trace Level
Instruction Manual
Chemiluminescence NO-NO
-NO
Analyzer
2
x
Part Number 102855-00
20Dec2007

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Summary of Contents for Thermo Scientific 42i

  • Page 1 Model 42i Trace Level Instruction Manual Chemiluminescence NO-NO Analyzer Part Number 102855-00 20Dec2007...
  • Page 2 © 2007 Thermo Fisher Scientific Inc. All rights reserved. Specifications, terms and pricing are subject to change. Not all products are available in all countries. Please consult your local sales representative for details. Thermo Fisher Scientific Air Quality Instruments 27 Forge Parkway Franklin, MA 02038 1-508-520-0430 www.thermo.com/aqi...

  • Page 3: Weee Compliance

    WEEE Compliance This product is required to comply with the European Union’s Waste Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is marked with the following symbol: Thermo Fisher Scientific has contracted with one or more recycling/disposal companies in each EU Member State, and this product should be disposed of or recycled through them.

  • Page 5: About This Manual

    “C-Link Protocol Commands” provides a description of ● the C-Link protocol commands that can be used to remotely control an analyzer using a host device such as a PC or datalogger. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 6 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. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 7 The service procedures in this manual are restricted to ▲ qualified service personnel only. The Model 42i Trace Level is supplied with a three-wire grounding cord. Under no circumstances should this ▲ grounding system be defeated.
  • Page 8 Service is available from exclusive distributors worldwide. Contact one of the phone numbers below for product support and technical information or visit us on the web at www.thermo.com/aqi. 1-866-282-0430 Toll Free 1-508-520-0430 International Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 9: Table Of Contents

    , and Prereactor Backgrounds ......... 3-17 NO, NO , and NO Coefficients ........... 3-18 Calibration Pressure ............... 3-19 Reset User Calibration Default............3-20 Calibration Menu ................3-20 Calibrate NO, NO and Prereactor Backgrounds ......3-21 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 10 RS-232/RS-485 Selection............3-39 TCP/IP Settings................3-40 Use DHCP ................. 3-40 IP Address................... 3-41 Netmask..................3-41 Default Gateway ................. 3-42 Host Name ................. 3-42 I/O Configuration................3-42 Output Relay Settings ..............3-43 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 11 Test Analog Outputs..............3-61 Set Analog Outputs..............3-62 Instrument Configuration .............. 3-62 Contact Information ..............3-62 Alarms Menu ..................3-63 Internal Temperature ..............3-64 Min and Max Internal Temperature Limits......... 3-64 Chamber Temperature..............3-64 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 12 Analog Input Calibration ............... 3-83 Analog Input Calibrate Zero ............3-83 Analog Input Calibrate Full-Scale ..........3-84 Ozonator Safety ................3-84 Dilution Ratio................3-85 Display Pixel Test ................3-85 Restore User Defaults..............3-86 viii Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 13 Set Background Readings to Zero ..........4-16 Calibrate Low NO ................. 4-17 Calibrate Low NO ................ 4-18 Calibrate Low NO ................ 4-18 Calibrate High NO ................ 4-19 Calibrate High NO ............... 4-19 Calibrate High NO ............... 4-20 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 14 Solenoid Valve Replacement ............. 7-23 Ozonator Assembly Replacement ............7-25 Ozonator Transformer Replacement ..........7-26 Input Board Replacement ..............7-27 Input Board Calibration..............7-28 DC Power Supply Replacement ............7-29 Analog Output Testing ..............7-30 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 15 Monitoring Signals................8-4 Measurement Calculations ............... 8-5 Output Communication ..............8-5 Electronics ..................8-6 Motherboard..................8-6 External Connectors..............8-6 Internal Connectors ..............8-6 Measurement Interface Board ............8-7 Measurement Interface Board Connectors........8-7 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 16 Mounting Options................9-4 Warranty......................A-1 Appendix A Appendix B C-Link Protocol Commands................B-1 Instrument Identification Number............B-1 Commands ..................B-2 Accessing Streaming Data ..............B-2 Commands List................B-2 Measurements ..................B-9 Alarms....................B-13 Diagnostics ..................B-17 Datalogging..................B-17 Calibration..................B-25 Keys/Display ..................B-29 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 17 Geysitech Commands ................ D-3 Instrument Control Command (ST)..........D-3 Data Sampling/Data Query Command (DA)........D-4 Measurements reported in response to DA command ..... D-6 Single Range Mode ..............D-6 Dual/Auto Range Mode............... D-6 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual xiii...
  • Page 18 Contents Operating and Error Status ............. D-7 Appendix E Standards for Trace Level Analyzers ............E-1 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 19 Figure 1–1. Model 42i Trace Level Flow Schematic.......... 1-3 Figure 2–1. Remove the Packing Material ............2-2 Figure 2–2. Model 42i Trace Level Rear Panel ..........2-3 Figure 2–3. Atmospheric Dump Bypass Plumbing ..........2-3 Figure 2–4. Twin-Head Vacuum Pump Installation..........2-4 Figure 2–5.
  • Page 20 Figure 8–1. Hardware Components ..............8-2 Figure 9–2. Rack Mount Option Assembly ............9-5 Figure 9–3. Bench Mounting................9-6 Figure 9–4. EIA Rack Mounting ................9-7 Figure 9–5. Retrofit Rack Mounting..............9-8 Figure B–1. Flags ....................B-13 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 21 Table 6–8. Input Board Connector Pin Descriptions ........6-20 Table 6–9. Temperature Control Board Connector Pin Descriptions ....6-21 Table 7–1. Model 42i Trace Level Replacement Parts ........7-4 Table 7–2. Model 42i Trace Level Cables............7-6 Table 7–3. External Device Connection Components ........7-6 Table 7–4.
  • Page 22 Table C–1. Read Coils for 42i Trace Level............C-8 Table C–2. Read Registers for 42i Trace Level ..........C-9 Table C–3. Write Coils for 42i Trace Level............C-11 Table D–1. Operating Status for Model 42i Trace Level ........D-7 Table D–2. Error Status for Model 42i Trace Level........... D-7 xviii...

  • Page 23: Introduction

    The Model 42i Trace Level Chemiluminescence NO-NO Analyzer combines proven detection technology, easy to use menu-driven software, and advanced diagnostics to offer unsurpassed flexibility and reliability. The Model 42i Trace Level has the following features: 320 x 240 graphics display ● Menu-driven software ●...

  • Page 24: Principle Of Operation

    NO by a molybdenum NO -to NO converter heated to about 325 °C. The ambient air sample is drawn into the Model 42i Trace Level through the sample bulkhead, as shown in Figure 1–1. The sample flows through a capillary, and then to the mode solenoid valve.

  • Page 25: Specifications

    Figure 1–1. Model 42i Trace Level Flow Schematic Specifications Table 1–1 lists the specifications for the Model 42i Trace Level. Table 1–1. Model 42i Trace Level Specifications Preset ranges 0-5, 10, 20, 50, 100, 200 ppb 0-10, 20, 50, 100, 200, 500 μg/m...
  • Page 26 115200, 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 in 15–35 °C range. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 27: Installation

    ▲ Unpacking and The Model 42i Trace Level is shipped complete in two containers. If there is obvious damage to the shipping containers when you receive the Inspection instrument, notify the carrier immediately and hold for inspection. The carrier is responsible for any damage incurred during shipment.

  • Page 28: Setup Procedure

    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. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 29: Figure 2-2. Model 42I Trace Level Rear Panel

    Installation Setup Procedure Figure 2–2. Model 42i Trace Level Rear Panel Note Gas must be delivered to the instrument free of particulates. It may be necessary to use the Teflon particulate filter as described in “Ozone Particulate Filter” on page 9-2.

  • Page 30: Figure 2-4. Twin-Head Vacuum Pump Installation

    Components” on page “Terminal Block and Cable Kits” on page “Instrument Controls Menu” on page 3-25 For detailed information about troubleshooting a connection, refer to “Analog Output Testing” on page 7-30. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 31: Connecting External Devices

    Installation Connecting External Devices 6. Plug the instrument into an outlet of the appropriate voltage and frequency. WARNING The Model 42i Trace Level is supplied with a three-wire grounding cord. Under no circumstances should this grounding system be defeated. ▲...

  • Page 32: Figure 2-5. I/O Terminal Board Views

    Power_Fail_NC Analog ground Power_Fail_COM Analog2 Power_Fail_NO Analog ground TTL_Input1 Analog3 TTL_Input2 Analog ground TTL_Input3 Analog4 TTL_Input4 Analog ground Digital ground Analog5 TTL_Input5 Analog ground TTL_Input6 Analog6 TTL_Input7 Analog ground Digital ground Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 33: Figure 2-6. D/O Terminal Board Views

    Table 2–2. D/O Terminal Board Pin Descriptions Signal Description Signal Description Relay1_ContactA Relay7_ContactA Relay1_ContactB Relay7_ContactB Relay2_ContactA Relay8_ContactA Relay2_ContactB Relay8_ContactB Relay3_ContactA Relay9_ContactA Relay3_ContactB Relay9_ContactB Relay4_ContactA Relay10_ContactA Relay4_ContactB Relay10_ContactB Relay5_ContactA (not used) Relay5_ContactB +24V Relay6_ContactA (not used) Relay6_ContactB +24V Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 34: Figure 2-7. 25-Pin Terminal Board Views

    Signal Description IOut1 Analog_In1 Isolated ground Analog_In2 IOut2 Analog_In3 Isolated ground GNDD IOut3 Analog_In4 Isolated ground Analog_In5 IOut4 Analog_In6 Isolated ground GNDD IOut5 Analog_In7 Isolated ground Analog_In8 IOut6 GNDD Isolated ground GNDD Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 35: Startup

    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. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 37: Operation

    Some menus contain more items than can be displayed at one time. For these menus, use to move the cursor up and down to each item. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 38: Pushbuttons

    If the liquid crystal contacts your skin or clothes, wash it off immediately using soap and water. ▲ Pushbuttons The Pushbuttons allow the user to traverse the various screens/menus. Figure 3–2. Front Panel Pushbuttons Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 39: Soft Keys

    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. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 40: Software Overview

    0123456789 ./- SAVE RANGE DIAGS ALARM Software The Model 42i Trace Level utilizes the menu-driven software as illustrated by the flowchart in Figure 3–3. The Power-Up screen, shown at the top of Overview 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.

  • Page 41: Figure 3-3. Flowchart Of Menu-Driven Software

    Operation Software Overview Figure 3–3. Flowchart of Menu-Driven Software Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 42: Power-Up Screen

    Operation Software Overview Power-Up Screen The Power-Up screen is displayed on power up of the Model 42i Trace Level. The Self-Test is displayed while the internal components are warming up and diagnostic checks are performed. Please wait while booting... Run Screen...

  • Page 43: Main Menu

    Run ● screen. XXLO WCONCENTRATIONXXLO 62.7 PPB 25.5 PPB 88.2 PPB xSAMPLE 12:34 ALARMx MAIN MENU: >RANGE AVERAGING TIME CALIBRATION FACTORS CALIBRATION INSTRUMENT CONTROLS DIAGNOSTICS ALARMS RANGE DIAGS ALARM SERVICE PASSWORD Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 44: Range Menu

    By default, the three 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 “Range Mode Select” on page 3-74. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 45: Figure 3-4. Pin-Out Of Rear Panel Connector In Single Range Mode

    For example, the low NO analog output can be set to output concentrations from 0 to 50 ppb and the high NO analog output set to output concentrations from 0 to 100 ppb. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 46: Figure 3-5. Pin-Out Of Rear Panel Connector In Dual Range Mode

    2, 4, 6, 8, 10, 12 Signal Ground Note All channels are user definable. If any customization has been made to the analog output configuration, the default selections my not apply. ▲ 3-10 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 47: Auto Range Mode

    For example, the low NO range is set to 0–50 ppb and the high NO range is set to 0–200 ppb. Figure 3–6. Analog Output in Auto Range Mode Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-11...

  • Page 48: Figure 3-7. Pin-Out Of Rear Connector In Auto Range Mode

    2, 4, 6, 8, 10, 12 Signal Ground Note All channels are user definable. If any customization has been made to the analog output configuration, the default selections my not apply. ▲ 3-12 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 49: Gas Units

    The example below shows the NO range screen in single mode. For more information about the dual and auto range modes, see “Single Range Mode”, “Dual Range Mode”, and “Auto Range Mode” earlier in this chapter. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-13...

  • Page 50: Set Custom Ranges

    5 and 200 ppb can be specified as a range. In the μg/m mode, any value between 10 and 500 μg/m can be specified as a range. In the Main Menu, choose Range > Set Custom Ranges. ● 3-14 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 51: Custom Ranges

    The Averaging Time screen for the single range mode is shown below. In the dual and auto range modes, an Averaging Time Menu is displayed before the averaging time screens. This additional menu is needed because Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-15...

  • Page 52: Calibration Factors Menu

    To manually calibrate the instrument, see “NO, NOx, and Prereactor Backgrounds”, “NO, NO2, and NOx Coefficients” and “Calibration Pressure” below for more information. In the Main Menu, choose Calibration Factors. ● 3-16 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 53: No, No X , And Prereactor Backgrounds

    A background correction is 0.0 ppb means that 0 ppb is being subtracted from the NO concentration being displayed. Therefore, the background correction must be increased to 0.09 ppb in order for the Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-17...

  • Page 54: No, No , And No Coefficients

    NO concentration. Notice that as the span coefficient value is changed, the current NO concentration reading on the above line also changes. However, no real changes are made to the value 3-18 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 55: Calibration Pressure

    If the pressure compensation feature is to be used, the instrument must be calibrated with the pressure compensation feature ON. For more information about calibration, see Chapter 4, “Calibration”. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-19...

  • Page 56: Reset User Calibration Default

    The calibration pressure is used to account for slight pressure fluctuation brought on by changing weather. The calibration pressure is set equal to the reactor pressure at the time of 3-20 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 57: Calibrate No, No X And Prereactor Backgrounds

    In the Main Menu, choose Calibration > Cal Prereactor Zero, Cal ● NO, or Cal NOx Background. NO BACKGROUND: 0.09 CURRENTLY: 0.00 ? SET CO TO ZERO RANGE DIAGS ALARM Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-21...

  • Page 58: Calibrate No, No Or No Coefficients

    In the Main Menu, choose Calibration > Calibrate Pressure. ● CALIBRATE PRESSURE: CUR CAL PRES: 150.0 mmHg CURRENT PRES: 232.5 mmHg ? SAVE CURRENT PRESSURE AS CAL PRESSURE RANGE DIAGS ALARM 3-22 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 59: Zero/Span Check

    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. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-23...

  • Page 60: Zero/Span/Purge Duration Minutes

    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. 3-24 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 61: Zero/Span Averaging Time

    In the Main Menu, choose Instrument Controls. ● INSTRUMENT CONTROLS: >OZONATOR PMT SUPPLY AUTO/MANUAL MODE DATALOGGING SETTINGS COMMUNICATION SETTINGS I/O CONFIGURATION TEMPERATURE COMPENSATION RANGE DIAGS ALARM PRESSURE COMPENSATION SCREEN CONTRAST SERVICE MODE DATE/TIME Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-25...

  • Page 62: Ozonator

    The PMT Supply screen is used to turn the PMT power supply on or off. This is useful in a troubleshooting situation. In the Main Menu, choose Instrument Controls > PMT Supply. ● 3-26 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 63: Auto/Manual Mode

    SET TO: NO/NOX ? CHANGE VALUE SAVE VALUE RANGE DIAGS ALARM Datalogging Settings The Datalogging Settings menu deals with datalogging. In the Main Menu, choose Instrument Controls > Datalogging ● Settings. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-27...

  • Page 64: Select Srec/Lrec

    SET TO: # OF RECS CHANGE ACCEPT RANGE DIAGS ALARM Number of Records The Number of Records screen is used to select the starting point to display the number of records back to view. 3-28 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 65: Date And Time

    If set to one minute logging, this would be at “20 JUN 2005 10:01”. DATE AND TIME: 20 JUN 2005 10:00 DAYS SET CURSOR TO MONTHS ACCEPT AS SHOWN RANGE DIAGS ALARM The Record Display screen (read only) displays the selected records. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-29...

  • Page 66: Erase Log

    Note that committing any changes to this list will erase all currently logged data, as the format of the stored data is changed. In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Select Content. 3-30 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 67: Concentrations

    > Select Content > Select Field > Concentrations. CONCENTRATIONS: >NONE <-- LO NO LO NO2 LO NOx RANGE DIAGS ALARM HI NO HI NO2 HI NOx PREREACTOR LO PREREACTOR HI PREREACTOR NO COR NO2 COR NOx COR Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-31...

  • Page 68: Other Measurements

    To change the selected record format and erase record log file data, see “Commit Content” below. In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Select Content > Select Field > Analog Inputs. 3-32 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 69: Commit Content

    For more information about selecting the analog output signal group choices, see “Select Content” above. In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Reset to Default Content. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-33...

  • Page 70: Configure Datalogging

    In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Configure Datalogging > Logging Period Min. SET PERIOD FOR SREC: CURRENTLY: 60 MIN SET TO: OFF MIN CHANGE VALUE SAVE RANGE DIAGS ALARM 3-34 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 71: Data Treatment

    CHANGE VALUE SAVE RANGE DIAGS ALARM Communication The Communication Settings menu is used with communications control and configuration. Settings In the Main Menu, choose Instrument Controls > Communication ● Settings. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-35...

  • Page 72: Baud Rate

    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 42i Trace Level has a default Instrument ID of 42. For more information about the Instrument ID, see Appendix B “C-Link...

  • Page 73: Streaming Data Configuration

    ● Settings > Streaming Data Config. STREAMING DATA CONFIG >INTERVAL 10 SEC ADD LABELS PREPEND TIMESTAMP ITEM 1 ITEM 2 INTT ITEM 3 PRES ITEM 4 NONE RANGE DIAGS ALARM Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-37...

  • Page 74: Streaming Data Interval

    In the Main Menu, choose Instrument Controls > Communication ● Settings > Streaming Data Config > Select Item > Concentrations. CONCENTRATIONS: >NONE <-- RANGE (NOX) PREREACTOR RANGE DIAGS ALARM 3-38 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 75: Other Measurements

    The RS-232/RS-485 Selection screen allows the user to choose between the RS-232 or RS-485 specification for serial communication. Note Disconnect the serial cable before changing RS-232 and RS-485 selection to prevent damage to the connected equipment. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-39...

  • Page 76: Rs-232/Rs-485 Selection

    When DHCP is enabled, the network dynamically provides an IP address for the instrument. In the Main Menu, choose Instrument Controls > Communication ● Settings > TCP/IP Settings > Use DCHP. 3-40 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 77: Ip Address

    In the Main Menu, choose Instrument Controls > Communication ● Settings > TCP/IP Settings > Netmask. NETMASK: CURRENT: 255.255.254.0 SET TO: 255.255.254.0 0 MOVE CURSOR CHANGE VALUE SAVE VALUE RANGE DIAGS ALARM Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-41...

  • Page 78: Default Gateway

    In the Main Menu, choose Instrument Controls > I/O Configuration. ● Note The digital outputs may take up to one second after the assigned state occurs to show up on the outputs. ▲ 3-42 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 79: Output Relay Settings

    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 or non-alarm to choose from. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-43...

  • Page 80: Alarms

    DIAGS ALARM NOx CONC MIN INT TEMP CHAMB TEMP COOLER TEMP NO2 CV TMEP PRESSURE FLOW OZONE FLOW MB STATUS MIB STATUS I/O BD STATUS CONC ALARM ZERO CHK/CAL SPAN CHK/CAL 3-44 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 81: Non-Alarm

    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 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-45...

  • Page 82: Instrument Action

    1-6 (if the I/O expansion board option is installed). Configuration choices include selecting range, setting minimum/maximum values, and choosing signal to output. In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Output Config. 3-46 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 83: Select Output Range

    Range Status is visible only in auto range mode. The minimum and maximum output value screens function the same way. The example below shows the set minimum value screen. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-47...

  • Page 84: Table 3-6. Analog Output Zero To Full-Scale Table

    User-set alarm min value User-set alarm max value Flow User-set alarm min value User-set alarm max value PMT Volts 700 volts 1100 volts Ozonator Flow User-set alarm min value User-set alarm max value 3-48 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 85: Table 3-7. Signal Type Group Choices

    Internal Temp Analog Input 1 (single/auto range mode) Chamber Temp Analog Input 2 (single/auto range mode) Cooler Temp Analog Input 3 LO NO (dual mode) Converter Temp Analog Input 4 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-49...

  • Page 86: Analog Input Configuration

    POINT 1 POINT 2 RANGE DIAGS ALARM Descriptor The Descriptor screen allows the user to enter the descriptor for the selected analog input channel. The descriptor is used in datalogging and 3-50 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 87: Units

    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. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-51...

  • Page 88: Number Of Table Points

    In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Input Config > Select Channel > Point 1-10. TABLE POINT 01 CONFIG: >VOLTS 0.00 USER VALUE 0.00 RANGE DIAGS ALARM 3-52 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 89: Volts

    When temperature compensation is on, the display shows the current internal instrument temperature (measured by a thermistor on the Interface Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-53...

  • Page 90: Pressure Compensation

    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. ● 3-54 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 91: 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 42i Trace Level. For more information about the service mode, see “Service Menu” later in this chapter.

  • Page 92: Diagnostics Menu

    Prior to contacting the factory with any questions regarding the instrument, please note the product model name and program version number. In the Main Menu, choose Diagnostics > Program Version. ● 3-56 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 93: Voltages

    24.1 V -3.3 SUPPLY -3.3 V RANGE DIAGS ALARM Interface Board Voltages The Interface Board screen (read only) is used to display the current voltage readings on the interface board. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-57...

  • Page 94: I/O Board Voltages

    In the Main Menu, choose Diagnostics > Temperatures. ● TEMPERATURES: INTERNAL 28.6 CHAMBER 49.0 COOLER -10.0 NO2 CONVERTER 320.7 NO2 CONV SET 325.0 RANGE DIAGS ALARM 3-58 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 95: Pressure

    (zero) reading. In dual or auto range modes, low range and high range are displayed. The example below shows the prereactor zero screen in single range mode. In the Main Menu, choose Diagnostics > Prereactor Zero. ● Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-59...

  • Page 96: Analog Input Readings

    0.00 V RANGE DIAGS ALARM Digital Inputs The Digital Inputs screen (read only) displays the state of the 16 digital inputs. In the Main Menu, choose Diagnostics > Digital Inputs. ● 3-60 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 97: Relay States

    In the Main Menu, choose Diagnostics > Test Analog Outputs. ● TEST ANALOG OUTPUTS: >ALL VOLTAGE CHANNEL 1 VOLTAGE CHANNEL 2 VOLTAGE CHANNEL 3 VOLTAGE CHANNEL 4 VOLTAGE CHANNEL 5 VOLTAGE CHANNEL 6 RANGE DIAGS ALARM Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-61...

  • Page 98: Set Analog Outputs

    PERM DRYER CONVERTER MOLY DILUTION AUTO CALIBRATION RANGE DIAGS ALARM Contact Information The Contact Information screen displays the customer service information. In the Main Menu, choose Diagnostics > Contact Information. ● 3-62 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 99: Alarms Menu

    CHAMBER TEMP COOLER TEMP CONVERTER TEMP PRESSURE FLOW RANGE DIAGS ALARM OZONATOR FLOW ZERO CHECK SPAN CHECK ZERO AUTOCAL SPAN AUTOCAL NO CONCENTRATION NO2 CONCENTRATION NOx CONCENTRATION ZERO CONCENTRATION MOTHERBOARD STATUS Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-63...

  • Page 100: Internal Temperature

    The word “ALARM” appears in the Run screen and in the Main Menu. In the Main Menu, choose Alarms > Chamber Temp. ● 3-64 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 101: Min And Max Chamber Temperature Limits

    “ALARM” appears in the Run screen and in the Main Menu. In the Main Menu, choose Alarms > Cooler Temp. ● COOLER TEMPERATURE: ACTUAL -9.8 >MIN -20.0 -1.0 RANGE DIAGS ALARM Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-65...

  • Page 102: Converter Temperature

    The minimum and maximum converter temperature screens function the same way. In the Main Menu, choose Alarms > Converter Temp > Min or Max. ● 3-66 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 103: Pressure

    In the Main Menu, choose Alarms > Pressure > Min or Max. ● PRESSURE: ACTUAL MIN: 200.0 mmHg SET MIN TO: 210.0 mmHg? INC/DEC SAVE VALUE RANGE DIAGS ALARM Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-67...

  • Page 104: Flow

    Inadequate ozonator flow will cause the ozonator to overheat, resulting in permanent damage to the ozonator. In the Main Menu, choose Alarms > Ozonator Flow. ● 3-68 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 105: Zero And Span Check

    Zero and Span Auto The Zero Auto Calibration screen (read only) allows the user to view the status of the most recent auto background calibration. The zero and span Calibration Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-69...

  • Page 106: No, No 2 , And No X Concentration

    NO concentration alarm limits. The minimum and maximum Concentration Limits NO, NO , and NO concentration alarm limit screens function the same way. In the Main Menu, choose Alarms > Select Concentration > Min or ● Max. 3-70 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 107: Min Trigger

    The word “ALARM” appears in the Run screen and in the Main Menu. In the Main Menu, choose Alarms > Zero Concentration. ● Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-71...

  • Page 108: Min Trigger

    In the Main Menu, choose Alarms > Zero Concentration > ● MinTrigger. MIN TRIG(CEILING/FLOOR): ACTUAL TRIGGER: CEILING SET TRIGGER TO: FLOOR ? TOGGLE AND SAVE VALUE RANGE DIAGS ALARM 3-72 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 109: Service Menu

    “Service Mode” earlier in this chapter. Note This adjustment should only be performed by an instrument service technician. ▲ In the Main Menu, choose Service > PMT Voltage Adjustment. ● Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-73...

  • Page 110: Range Mode Select

    “Service Mode” earlier in the chapter. Note This adjustment should only be performed by an instrument service technician. ▲ In the Main Menu, choose Service > Converter Set Temperature. ● 3-74 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 111: Pressure Calibration

    Note A vacuum pump must be connected to the pressure sensor before performing the zero calibration. ▲ In the Main Menu, choose Service > Pressure Calibration > Zero. ● Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-75...

  • Page 112: Calibrate Pressure Zero

    The Restore Default Calibration screen allows the user to reset the pressure calibration configuration values to factory defaults. Calibration In the Main Menu, choose Service > Pressure Calibration > Set ● Defaults. 3-76 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 113: Flow Calibration

    The Calibrate Flow Zero screen calibrates the flow sensor at zero flow. Note The pump must be disconnected before performing the zero calibration. ▲ In the Main Menu, choose Service > Flow Calibration > Zero. ● Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-77...

  • Page 114: Calibrate Flow Zero

    In the Main Menu, choose Service > Select Flow Calibration A or B > ● Set Defaults. RESTORE DEFAULT CAL: RESTORE DEFAULT CAL: RESTORE RESTORE ARE YOU SURE YOU WANT TO?x PRESS TO CONFIRM RESTORE RANGE DIAGS ALARM RANGE DIAGS ALARM 3-78 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 115: Input Board Calibration

    5. Use to increment or decrement the D/A counts so the frequency at gain 100 is equal to the frequency at gain 1. 6. Press to save new input board calibration. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-79...

  • Page 116: Automatic Input Calibration

    In the Main Menu, choose Service > Input Board Calibration > Input ● Frequency Display. Press to leave warning screen. ● to toggle the test signal and bypass the PMT. ● to change the gain between 1, 10 and 100. ● 3-80 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 117: Temperature Calibration

    “Service Mode” earlier in the chapter. Note This adjustment should only be performed by an instrument service technician. ▲ In the Main Menu, choose Service > Analog Out Calibration. ● Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-81...

  • Page 118: Analog Output Calibrate Zero

    In the Main Menu, choose Service > Analog Out Calibration > Select ● Channel > Calibrate Full Scale. 3-82 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 119: Analog Input Calibration

    >CALIBRATE ZERO CALIBRATE FULL SCALE RANGE DIAGS ALARM Analog Input Calibrate The Analog Input Calibrate Zero screen allows the user to calibrate the zero state of the selected analog input. Zero Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-83...

  • Page 120: Analog Input Calibrate Full-Scale

    For more information on the service mode, see “Service Mode” earlier in the chapter. In the Main Menu, choose Service > Ozonator Safety. ● 3-84 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 121: Dilution Ratio

    Mode” earlier in the chapter. In the Main Menu, choose Service > Display Pixel Test. ● DISPLAY PIXEL TEST: DURING TEST PRESS TO EXIT, TOGGLEXXXXXx BEGIN TEST GO BACK TO MENU RANGE DIAGS ALARM Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-85...

  • Page 122: Restore User Defaults

    The Set Password screen is used to set the password to unlock the front panel. The set password is shown if the instrument is unlocked and the password is set. In the Main Menu, choose Password > Set Password ● 3-86 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 123: Lock Instrument

    Remove Password The Remove Password screen is used to erase the current password and disable password protection. The remove password is shown if the instrument is unlocked and the password set. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 3-87...

  • Page 124: Unlock Instrument

    The unlock instrument is shown if the instrument is locked. In the Main Menu, choose Password > Unlock Instrument ● ENTER NEW PASSWORD: RANGXXXXXE ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 ./- SAVE RANGE DIAGS ALARM 3-88 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 125: Chapter 4 Calibration

    Calibration This chapter describes procedures for performing a multipoint calibration of the Model 42i Trace Level. The information described here is considered be adequate to perform the calibration. However, if greater detail is desired, the user is referred to the Code of Federal Regulations, Title 40, Part 50, Appendix F.

  • Page 126: Table 4-1. Scrubbing Materials

    Gas phase titrator ● Zero Gas Generator A zero air source, such as a Thermo Scientific Model 111 Zero Air Supply or Model 1160 Zero Air Supply, free of contaminants such as NO, NO , and is required for dilution, calibration, and gas phase titration.

  • Page 127: Figure 4-1. Gpt System

    Calibration Equipment Required Gas Phase Titrator A gas phase titrator (GPT), such as is included in the Thermo Scientific Model 146 Series Multigas Calibration System is used to generate NO concentrations from NO concentrations. Figure 4-1 shows the suggested placement of the component parts of a gas phase titration apparatus.

  • Page 128: Diverter Valve

    NIST traceable NO standard and determination of the amount of NO impurity in the working standard is reproduced here. The cylinder should be re-certified on a regular basis as determined by the local quality control program. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 129: Assaying A Working No Standard Against A Nist-Traceable No Standard

    NO concentrations reflect any NO impurity in the NO working standard. 8. Plot the difference between the analyzer NO and NO responses versus . The slope of this plot is [NO Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 130: Zero Air

    10 to 50 percent excess. 2. Establish [NO] as the highest NO concentration that will be required at the output manifold. [NO] should be about equal to Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 131 8. Compute the diluent air flow rate as: 9. If F turns out to be impractical for the desired system, select a reaction chamber having a different V and recompute F and F Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 132: Pre-Calibration

    Pre-Calibration Pre-Calibration Perform the following pre-calibration procedure before calibrating the Model 42i Trace Level. For detailed information about the menu parameters and the icons used in these procedures, see the “Operation” chapter. Note The calibration and calibration check duration times should be long enough to account for the transition (purge) process when switching from sample to zero and from zero to span.

  • Page 133: Calibration

    Connect GPT Apparatus Use the following procedure to connect the GPT apparatus to the analyzer. to the Analyzer 1. Assemble a dynamic calibration system such as the one shown in Figure 4–1. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 134: Adjust Instrument Gain

    NO and NO background screen. Note The NO channel should be calibrated first and then calibrate the channel. ▲ 4-10 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 135 “Dynamic Parameter Specifications for Gas Phase Titrator” earlier in this chapter. The total GPT airflow must exceed the total demand of the analyzer. The Model 42i Trace Level requires approximately 1 liter/min of sample flow, and a total GPT airflow of at least 2.5 liters/min is recommended.

  • Page 136: Calibrate The No Channel To The No Calibration Gas

    The NO line of the Calibrate NO screen displays the current NO concentration. The SPAN CONC line of the display is where you enter the NO calibration gas concentration. 4-12 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 137 4. Plot the analyzer responses versus the respective calculated NO and concentrations and draw or calculate the respective calibration curves. For subsequent calibrations where linearity can be assumed, these curves may be checked with a three-point calibration consisting of Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 4-13...
  • Page 138 , ppm ORIG [NO] = NO concentration remaining after addition of O , ppm 11. Press to calculate and save the new NO coefficient based on the entered span concentration. 4-14 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 139 This is often useful in a troubleshooting situation. However, after the above calibration procedure is completed, all subsequent data reduction depends on the calibration parameters, remaining the same as during the initial calibration. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 4-15...

  • Page 140: Calibration In Dual Range And Auto Range Mode

    For detailed information about the menu parameters and the icons used in these procedures, see the “Operation” chapter. 1. Follow the “Pre-Calibration” procedure described previously in this chapter. 4-16 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 141: Calibrate Low No

    The Lo NO Span Conc field is where you enter the low NO calibration gas concentration. to move the cursor left and right and use to increment and decrement the numeric character at the cursor. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 4-17...

  • Page 142: Calibrate Low No 2

    Span Conc field is where you enter the Lo NO calibration gas concentration. 3. Set the low NO calibration gas concentration to reflect the sum of the concentration generated by GPT and any NO impurity. 4-18 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 143: Calibrate High No

    3. Press to calculate and save the new high NO coefficient based on the entered span concentration. 4. Press to return to the Run screen. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 4-19...

  • Page 144: Calibrate High No 2

    10 percent from that determined during the most recent multipoint calibration. You can adjust the frequency of calibration and even zero and span checks appropriately as you gain confidence with the instrument. 4-20 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 145 Use the following procedure to perform a zero and span check. 1. Connect the zero gas to the SAMPLE bulkhead in a standard instrument or to the ZERO bulkhead in a Model 42i Trace Level equipped with the zero/span and sample solenoid valve option.

  • Page 147: Chapter 5 Preventative Maintenance

    Equipment Damage 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. For more information about appropriate safety precautions, see the “Servicing” chapter. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 148: Replacement Parts

    Use the following procedure to inspect and replace the capillaries. This procedure can be used to check any or all of the capillaries. 1. Turn the instrument OFF and unplug the power cord. 2. Remove the instrument cover. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 149: Figure 5-1. Inspecting And Replacing The Capillaries

    9. Reconnect tubing to top of fittings, being careful to insert ferrule and O-ring properly, and tighten knurled nut finger tight. 10. Re-install the cover. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 150: Thermoelectric Cooler Fins Inspection And Cleaning

    2. Flush the filters with warm water and let dry (a clean, oil-free purge will help the drying process) or blow the filters clean with compressed air. 3. Re-install the filters and fan guards. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 151: Pump Rebuilding

    6. Remove and discard the old Teflon gasket. 7. Insert the clamping disk into the new Teflon diaphragm (three pieces) and screw the clamping disk into the pump. Do not over tighten. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 152: Figure 5-2. Rebuilding The Pump

    Preventative Maintenance Pump Rebuilding Figure 5–2. Rebuilding the Pump 8. Remove the screw and nut securing the flapper valves and remove and discard old flapper valves. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 153 Teflon gasket stays in place. 13. Reconnect the plumbing to the instrument and plug in the pump power cord. 14. Check that the reaction chamber pressure reads between 200 and 450 mmHg. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 155: Chapter 6 Troubleshooting

    The troubleshooting guides presented in this chapter are designed to help isolate and identify instrument problems. Guides Table 6–1 provides general troubleshooting information and indicates the checks that you should perform if you experience an instrument problem. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 156: Table 6-1. Troubleshooting - General Guide

    Check to see if line voltage is within specifications. Defective pump Rebuild pump. Unstable NO or NO source Replace. Clogged capillaries Unplug power cord. Clean or replace capillary. Clogged sample air filter Replace filter element. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 157 Converter temperature too high Temperature should be or too low approximately 325 °C. Low line voltage Check to see if line voltage is within specifications. Molybdenum consumed Replace Molybdenum converter cartridge. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 158: Table 6-2. Troubleshooting - Alarm Messages

    Replace if necessary. Check flow system for leaks. Alarm - Flow Flow low Check sample capillary (0.020 inch ID) for blockage. Replace as necessary. If using sample particulate filter make sure it is not Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 159 Check that all internal cables Status properly are connected properly. Recycle AC power to Alarm - Interface Board is defective instrument. If still alarming, Status change board. Alarm - I/O Exp Status Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 160: Figure 6-1. Board-Level Connection Diagram - Common Electronics

    2 Pin FRONT PANEL POWER SW TR ANSF O R ME R 3 Pin (90V AC or 240V AC O P TIO NS) Figure 6–1. Board-Level Connection Diagram - Common Electronics Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 161: Figure 6-2. Board-Level Connection Diagram - Measurement System

    C O NV E R TE R TH E R MO C O U P LE 2 Pin 2 Pin 3 Pin PU MP 3 Pin Figure 6–2. Board-Level Connection Diagram - Measurement System Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 162: Table 6-3. Motherboard Connector Pin Descriptions

    Ethernet Output (+) Ethernet Output (-) Ethernet Input (+) Ethernet Input (-) INTF DATA Ground +RS485 to Interface Board -RS485 to Interface Board 10-BASE-T Ethernet Output (+) Ethernet Output (-) Ethernet Input (+) Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 163 Ground TTL Input 1 TTL Input 2 Ground TTL Input 5 TTL Input 7 TTL Input 8 TTL Input 10 Ground TTL Input 13 TTL Input 15 Ground Analog Voltage 1 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 164 Analog Voltage 2 Analog Voltage 4 Ground Analog Voltage 6 Ground SER EN Serial Enable Jumper +3.3V 24V IN +24V Ground DIGITAL I/O +24V +24V Ground Ground Ground SPI Reset 6-10 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 165 Ground Ground LLP – LCD Signal LFLM – LCD Signal LD4 – LCD Signal LD0 – LCD Signal LD5 – LCD Signal LD1 – LCD Signal LD6 – LCD Signal Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 6-11...
  • Page 166 Serial Port 1 TX (-RS485 OUT) Ground Serial Port 1 RTS (+RS485 OUT) Serial Port 1 CTS (+RS485 IN) RS232/RS485:B P1:B Serial Port 2 RX (-RS485 IN) Serial Port 2 TX (-RS485 OUT) 6-12 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 167: Table 6-4. Measurement Interface Board Connector Pin Descriptions

    Designator DATA IPJ8 Ground +RS485 from Motherboard -RS485 from Motherboard PRES Pressure Sensor Input Ground +15V -15V INPUT BD +15V Ground -15V Ground Measurement Frequency Output Amplifier Zero Adjust Voltage Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 6-13...
  • Page 168 Bench Temperature Input Ground -15V Converter Heater On/Off Converter Temperature Input +15V_PWR OZONATOR Ozonator Output A Ozonator Output B 24V IN +24V Ground PROV INPUT Spare Voltage Input Ground Ground Ground 6-14 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 169 Z/S SOL. PJ11 +24V Zero/Span Solenoid Control SPARE1 SOL. PJ12 +24V Spare 1 Solenoid Control SPARE2 SOL. PJ13 +24V Spare 2 Solenoid Control PERM OVEN POJ1 Perm Oven Gas Thermistor THERM Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 6-15...

  • Page 170: Table 6-5. Front Panel Board Connector Pin Diagram

    LD7 – LCD Signal LD3 – LCD Signal LCD Bias Voltage Ground Ground LCD_ONOFF – LCD Signal Keypad Row 2 Input Keypad Row 1 Input Keypad Row 4 Input Keypad Row 3 Input 6-16 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 171 Keypad Row 2 Input Keypad Row 3 Input Keypad Row 4 Input Keypad Col 1 Select Keypad Col 2 Select Keypad Col 3 Select Keypad Col 4 Select LCD BACKLIGHT +5 Supply Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 6-17...

  • Page 172: Table 6-6. I/O Expansion Board (Optional) Connector Pin Descriptions

    Current Output 2 Current Output Return Current Output 3 Current Output Return Current Output 4 Current Output Return Current Output 5 Current Output Return Current Output 6 MOTHER BD +24V +24V 6-18 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 173: Table 6-7. Digital Output Board Connector Pin Descriptions

    Relay 5 Contact a Relay 6 Contact a Relay 7 Contact a Relay 8 Contact a Relay 9 Contact a Relay 10 Contact a Solenoid Drive Output 1 Solenoid Drive Output 2 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 6-19...

  • Page 174: Table 6-8. Input Board Connector Pin Descriptions

    +24V +24V +24V +24V +24V +24V +24V Table 6–8. Input Board Connector Pin Descriptions Connector Reference Signal Description Label Designator PMT IN PMT Input Ground INTF BD +15V Ground -15V 6-20 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 175: Table 6-9. Temperature Control Board Connector Pin Descriptions

    CONVERTER Ground Converter Heater AC Output Converter Heater AC Return CONV TC Converter Thermocouple TC Converter Thermocouple TC+ SS TEMP SS Temperature Range Jumper A SS Temperature Range Jumper B Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 6-21...

  • Page 176: Service Locations

    For additional assistance, service is available from exclusive distributors worldwide. Contact one of the phone numbers below for product support Locations and technical information or visit us on the web at www.thermo.com/aqi. 1-866-282-0430 Toll Free 1-508-520-0430 International 6-22 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 177: Chapter 7 Servicing

    Chapter 7 Servicing This chapter explains how to replace the Model 42i Trace Level subassemblies. It assumes that a subassembly has been identified as defective and needs to be replaced. For fault location information refer to the “Preventive Maintenance” chapter and the “Troubleshooting” chapter in this manual.

  • Page 178: Safety Precautions

    Locations” on page 7-50 Safety Precautions Read the safety precautions before beginning any procedures in this chapter. WARNING The service procedures in this manual are restricted to qualified service representatives. ▲ Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 179 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. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 180: Figure 7-1. Properly Grounded Antistatic Wrist Strap

    > to return to the Main Menu. 4. Return to the procedure. Replacement Table 7–1 lists the replacement parts for the Model 42i Trace Level major subassemblies. Refer to Figure 7–2 to identify the component location. Parts List Table 7–1. Model 42i Trace Level Replacement Parts...
  • Page 181 Fuse, 250VAC, 4.0 Amp, SlowBlow (for 100VAC and 110VAC models) 101904-00 Fuse, 250VAC, 2.0 Amp, SlowBlow (for 220-240VAC models) 101688-00 Ambient Temperature Connector with Thermistor 4121 Capillary 0.010-inch ID 4126 Capillary 0.020-inch ID Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 182: Table 7-2. Model 42I Trace Level Cables

    Optical Filter Kit (Red Filter, Quartz Window, Rubber Washer) 6998 DriRite Cable List Table 7–2 describes the Model 42i Trace Level spare cables. See the “Troubleshooting” chapter for associated connection diagrams and board connector pin descriptions. Table 7–2. Model 42i Trace Level Cables Part Number...

  • Page 183: Figure 7-2. Component Layout

    Flow Switch Capillaries (2) Pressure Transducer Input Board Prereactor Thermistor Measurement Interface Board I/O Expansion Board (Opt) Power Supply Ozonator Solenoids (3) Motherboard Digital Output Board Transformer Figure 7–2. Component Layout Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 184: Figure 7-3. Removing The Measurement Bench And Lowering The Partition Panel

    Equipment Damage 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. ▲ 1. Turn instrument OFF and unplug the power cord. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 185: Pump Replacement

    Figure 7–4).To rebuild the pump, see “Pump Rebuilding” in the “Preventive Maintenance” chapter. Equipment Required: 110V pump or 220V pump 1. Disconnect the pump power line from the AC power outlet. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 186: Figure 7-4. Replacing The Pump

    Spanner wrench, 3.8 mm diameter by 4.5 mm long inserts ● Small flat-blade screwdriver ● Large flat-blade screwdriver ● Cleaning agent (alcohol) ● Fine-grade steel wool ● “LOC-TITE” blue breakable thread adhesive ● 7-10 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 187: Diaphragm Replacement

    7. Check the threads of the clamping disc to insure that they are clean and free of debris. Apply a small amount of the breakable thread adhesive to the clamping disc threads and install. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-11...

  • Page 188: Valve Replacement

    Be certain that the reed valves lay straight and smooth with clearance from the recessed edge to prevent sticking. If a reed valve 7-12 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 189: Figure 7-5. Vacuum Pump - Head Plate And Motor View

    Re-tighten the two center bolts after the other bolts are tight. Diaphragm Installation Valve Installation Figure 7–5. Vacuum Pump – Head Plate and Motor View Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-13...

  • Page 190: Figure 7-6. Replacing The Fan

    4. Remove the four fan mounting screws and remove the fan. 5. Install a new fan following the previous steps in reverse. Mounting Screws (4) Filter Fan Guard Figure 7–6. Replacing the Fan 7-14 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 191: Pmt Cooler And Reaction Chamber Assembly Replacement

    3. Snap off the temperature control board from the board mounts. 4. Remove the four screws securing the cooler shroud to the rear panel and remove the shroud. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-15...

  • Page 192: Figure 7-7. Pmt Cooler And Reaction Chamber

    Fasten knurled fittings on reaction chamber finger tight. ▲ Make sure that the heat shrink covered tubing between the reaction chamber and the converter is light tight at the connections. ▲ 7-16 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 193: Figure 7-8. Replacing The Pmt

    7–8). If the cooler fan is attached, unplug the fan power cord if necessary. PMT Cover Plate Screws (6) PMT Shroud Screws (4) PMT Base Screws (3) PMT Base Assembly Figure 7–8. Replacing the PMT Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-17...

  • Page 194: Pmt High Voltage Power Supply Replacement

    4. Loosen two screws on the input box assembly and lift the input box assembly off the power supply. 7-18 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 195: Figure 7-9. Replacing The Pmt Hvps

    WARNING The service procedures in this manual are restricted to qualified service representatives. ▲ 1. Select the NO, NO , and NO ranges. Refer to “Range Menu” in the “Operation” chapter. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-19...

  • Page 196: Reaction Chamber Cleaning Or Removal

    ▲ 1. Remove PMT cooler as described in “PMT Cooler and Reaction Chamber Replacement” in this chapter. 2. Disconnect all plumbing connections from the reaction chamber. 7-20 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 197: Figure 7-10. Cleaning Or Removing The Reaction Chamber

    Panel” in this chapter. PMT Cooler O-Ring (2-034) Viton Spacer Reaction Chamber Rear Red Filter Quartz Window O-Ring (2-127) Reaction Chamber Front Figure 7–10. Cleaning or Removing the Reaction Chamber Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-21...

  • Page 198: No 2 -To-No Converter Replacement

    3. Disconnect plumbing at converter inlet and outlet. 4. Disconnect thermocouple leads and heater connector from temperature control board. 5. Loosen the four captive screws holding converter housing to floor plate. 7-22 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 199: Figure 7-11. No

    O converter tube snugly around the heater. Solenoid Valve Use the following procedure to replace a solenoid valve (Figure 7–12). Replacement Equipment Required: Solenoid valve Wrench, 5/16-inch Philips screwdriver Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-23...

  • Page 200: Figure 7-12. Replacing The Solenoid Valve

    5. To replace solenoid, follow previous steps in reverse. 6. Re-install the measurement bench. Refer to “Removing the Measurement Bench and Lowering the Partition Panel” in this chapter. Figure 7–12. Replacing the Solenoid Valve 7-24 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 201: Ozonator Assembly Replacement

    3. Disconnect the stainless steel tubing from the flow transducer. 4. Loosen the four captive screws securing the ozonator bracket to the floor plate. Flow Transducer Captive Screws (4) Ozonator – Top View Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-25...

  • Page 202: Figure 7-13. Replacing The Ozonator Assembly

    A properly grounded antistatic wrist strap must be worn while handling any internal component. ▲ 1. Turn instrument OFF, unplug the power cord, and remove the cover. 7-26 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 203: Input Board Replacement

    4. Loosen the two screws holding the input box to the assembly bracket and lift the input box off the screws. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-27...

  • Page 204: Figure 7-14. Replacing The Input Board

    ▲ 1. From the Main Menu, press to scroll to Service > press > to scroll to Input Board Calibration > and press The Input Board Calibration screen appears. 7-28 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 205: Dc Power Supply Replacement

    2. Disconnect all the power supply electrical connections. Note connector locations to facilitate re-connection. 3. Loosen the captive screw securing the power supply to the chassis plate and lift out the power supply. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-29...

  • Page 206: Figure 7-15. Replacing The Dc Power Supply

    Use the following procedure to test the analog outputs. 1. Connect a meter to the channel to be tested. Figure 7–16 shows the analog output pins and Table 7–4 identifies the associated channels. 7-30 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 207: Figure 7-16. Rear Panel Analog Input And Output Pins

    Refer to the “Analog Output Calibration” procedure that follows. 6. Press to set the output to full-scale. The Output Set To line displays Full-Scale. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-31...

  • Page 208: Table 7-4. Analog Output Channels And Rear Panel Pin Connections

    Use the following procedure to calibrate the analog outputs if a meter reading in the “Analog Output Testing” procedure differed by more than Calibration one percent or after replacing the optional I/O expansion board. Equipment Required: Multimeter 7-32 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 209: Analog Input Calibration

    Calibrating the Input Use the following procedure to calibrate the input channels to zero volts. Channels to Zero Volts Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-33...

  • Page 210: Calibrating The Input Channels To Full-Scale

    2. From the Main Menu, press to scroll to Service, press > to scroll to Analog Input Calibration, and press The Analog Input Cal screen displays input channels 1-8. 7-34 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 211: Pressure Transducer Assembly Replacement

    1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Disconnect plumbing from the pressure transducer assembly. Note the plumbing connections to facilitate reconnection. 3. Disconnect the pressure transducer cable. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-35...

  • Page 212: Figure 7-17. Replacing The Pressure Transducer

    WARNING The service procedures in this manual are restricted to qualified service representatives. ▲ If the equipment is operated in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. ▲ 7-36 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 213 The Calibrate Pressure Zero screen appears. 5. Wait at least 10 seconds for the zero reading to stabilize, then press to save the zero pressure value. 6. Disconnect the pump from the pressure transducer. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-37...

  • Page 214: Temperature Control Board Replacement

    CONV TC cable. Note that the red wire is towards the rear and the yellow wire is towards the front. 3. Snap off the board from the board mounts. 4. To install the temperature control board, follow previous steps in reverse. 7-38 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 215: Ambient Temperature Calibration

    NIST traceable. ▲ 3. From the Main Menu, press to scroll to Service > press > to scroll to Temperature Calibration > and press The Calibrate Ambient Temperature screen appears. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-39...

  • Page 216: Fuse Replacement

    ▲ 1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Unscrew the Teflon tubing at both ends of the scrubber. 7-40 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 217: Figure 7-18. Replacing The Scrubber

    ▲ 1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Unplug the I/O expansion board cable from the EXPANSION BD connector on the motherboard. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-41...

  • Page 218: Figure 7-19. Replacing The I/O Expansion Board (Optional)

    Mounting Studs Motherboard Digital Output Board I/O Expansion Board (Opt) Figure 7–19. Replacing the I/O Expansion Board (Optional) I/O Expansion Board Motherboard Digital Output Board Figure 7–20. Rear Panel Board Connectors 7-42 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 219: Digital Output Board Replacement

    Nut driver, 3/16-inch Equipment Damage 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. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-43...

  • Page 220: Measurement Interface Board Replacement

    1. Lower the partition panel, then proceed to the next step below. Refer to “Removing the Measurement Bench and Lowering the Partition Panel” on page 7-8 in this chapter. 2. Unplug all connectors. Note the locations of the connectors to facilitate reconnection. 7-44 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 221: Figure 7-21. Replacing The Measurement Interface Board

    Flow transducer Equipment Damage 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. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-45...

  • Page 222: Figure 7-22. Replacing The Flow Transducer

    6. Calibrate the flow transducer. Refer to the “Flow Transducer Calibration” procedure that follows. Flow Transducer Use the following procedure to calibrate the flow transducer. Calibration Equipment Required: Calibrated flow sensor 7-46 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 223 6. Reconnect the pump cable to the AC PUMP connector on the measurement interface board. 7. Connect a calibrated flow sensor at the SAMPLE bulkhead on the rear panel. 8. Press to return to the Flow Sensor Cal menu. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-47...

  • Page 224: Front Panel Board Replacement

    3. Pop off the board from the two top mounting studs and remove the board by lifting it up and off the slotted bottom support. 4. Replace the front panel board by following previous steps in reverse. 7-48 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 225: Figure 7-23. Replacing The Front Panel Board And The Lcd Module

    ▲ Do not remove the panel or frame from the module. ▲ The polarizing plate is very fragile, handle it carefully. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 7-49...

  • Page 226: Service Locations

    For additional assistance, service is available from exclusive distributors worldwide. Contact one of the phone numbers below for product support and technical information or visit us on the web at www.thermo.com/aqi. 1-866-282-0430 Toll Free 1-508-520-0430 International 7-50 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 227: Chapter 8 System Description

    “Hardware” on page ● “Software” on page ● “Electronics” on page ● “I/O Components” on page ● Hardware Model 42i Trace Level hardware components (Figure 8–1) include: -to NO converter ● Mode solenoid ● Reaction chamber ● Optical filter ●...

  • Page 228: Figure 8-1. Hardware Components

    The reaction chamber is heated and controlled to approximately 50 °C in order to ensure the greatest instrument stability. The sample and ozone flow capillaries and a thermistor sensor are also housed in/on the reaction chamber assembly. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 229: Optical Filter

    The external vacuum pump draws the reacted gasses out of the reaction chamber. Sample Capillary The sample capillary along with the pump is used to control flow in the sample line. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 230: Dry Air Capillary

    (no additional signal conditioning is performed by the high-level processor). In auto mode, every ten seconds the NO/ NO solenoid switches and the processor waits three seconds for the reaction chamber to flush and Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 231: Measurement Calculations

    Negative concentrations can be represented as long as they are within -5% of full-scale. The zero and span values may be set by the user to any desired value. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 232: Electronics

    ● Voltage Outputs. Internal Connectors Internal connectors include: Function key panel and Display ● Measurement Interface Board Data ● I/O Expansion Board Data ● Digital Output Board ● AC distribution ● Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 233: Measurement Interface Board

    The pressure transducer output is produced by measuring the pressure difference between the sample gas pressure and ambient air pressure. Temperature Control The temperature control board regulates and sets the temperature of the reaction chamber and converter. Board Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 234: Pmt Power Supply Assembly

    It contains local power supplies, a DC/DC isolator supply, a sub-processor and analog circuits. Eight analog voltage inputs are provided with an input Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 235: Front Panel Connector Board

    The analog outputs may be assigned to any measurement or diagnostic channel with a user-defined range in the units of the selected parameter. The voltage outputs are independent of the current outputs. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 236: Analog Current Outputs (Optional)

    NO Measure Mode ● Measure Mode ● Zero Gas Mode ● Span Gas Mode ● The actual use of these inputs will vary based on analyzer configuration. 8-10 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 237: Serial Ports

    1200, 2400, 4800, 9600, 19200, 38400, 57600, or 115200 BAUD 8 data bits 1 stop bit no parity All responses are terminated with a carriage return (hex 0D) Refer to Table 8–1 for the DB9 connector pin configuration. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual 8-11...

  • Page 238: Table 8-1. Rs-232 Db Connector Pin Configurations

    Any serial port protocols may be accessed over Ethernet in addition to the serial port. External Accessory The external accessory connector is not used in the Model 42i analyzer. Connector This port is used in other models to communicate with smart external devices that may be mounted hundreds of feet from the analyzer using an RS-485 electrical interface.

  • Page 239: Chapter 9 Optional Equipment

    Chapter 9 Optional Equipment The Model 42i Trace Level is available with the following options: “Internal Zero/Span and Sample Valves” on page ● “Ozonator Permeation Dryer” on page ● “Ammonia Scrubber” on page ● “Teflon Particulate Filter” on page ●...

  • Page 240: Ammonia Scrubber

    Teflon Particulate A 5-10 micron pore size, two-inch diameter Teflon® element is available for the Model 42i Trace Level. This filter should be installed just prior to the Filter bulkhead. When using a filter, all calibrations and span checks SAMPLE must be performed through the filter.

  • Page 241: Table 9-1. Cable Options

    BLACK RED/BLACK BROWN ORANGE/BLACK YELLOW/BLACK ORANGE GREEN/BLACK YELLOW GRAY/BLACK GREEN PINK/BLACK BLUE End color codes for 25-pin cables continue for 37-pin cables. VIOLET PINK/GREEN GRAY PIND/RED WHITE PINK/VIOLET PINK LIGHT BLUE Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 242: Table 9-3. Mounting Options

    Mounted in an EIA-style rack, includes mounting slides, and front panel EIA-rack mounting handles. Retrofit rack Mounted in a Thermo non-EIA rack, includes mounting slides, and retrofit front panel rack-mounting handles. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 243: Figure 9-2. Rack Mount Option Assembly

    Optional Equipment Mounting Options Figure 9–2. Rack Mount Option Assembly Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 244: Figure 9-3. Bench Mounting

    Optional Equipment Mounting Options Figure 9–3. Bench Mounting Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 245: Figure 9-4. Eia Rack Mounting

    Optional Equipment Mounting Options Figure 9–4. EIA Rack Mounting Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 246: Figure 9-5. Retrofit Rack Mounting

    Optional Equipment Mounting Options Figure 9–5. Retrofit Rack Mounting Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 247: Appendix A Warranty

    (i) normal wear and tear, (ii) accident, disaster or event of force majeure, (iii) misuse, fault or negligence of or by Buyer, (iv) use of the Products in a manner for which Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 248 OR WRITTEN, WITH RESPECT TO THE PRODUCTS, INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. SELLER DOES NOT WARRANT THAT THE PRODUCTS ARE ERROR-FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 249: Appendix B C-Link Protocol Commands

    C-Link Protocol Commands This appendix provides a description of the C-Link protocol commands that can be used to remotely control a Model 42i Trace Level analyzer using a host device such as a PC or a datalogger. C-Link protocol may be used over RS-232, RS-485, or Ethernet.

  • Page 250: Table B-1. C-Link Protocol Commands

    (ASCII) character. The command in the example below begins with the ASCII character code 170 decimal, which directs the command to the Model 42i Trace Level, and is terminated by a carriage return “CR” (ASCII character code 13 decimal).

  • Page 251: Accessing Streaming Data

    Reports/sets current NO concentration alarm warning value B-16 alarm trig conc nox Reports/sets current NO concentration alarm warning value B-16 alarm trig conc pre Reports/sets current prereactor concentration alarm warning B-16 value Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 252 Sets/copies current selections in scratch pad into lrec list B-24 copy sp to srec Sets/copies current selections in scratch pad into srec list B-24 copy sp to stream Sets/copies current selections in scratch pad into stream list B-24 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 253 Reports current mode of sample, zero, or span B-32 gas unit Reports/sets current gas units B-33 he (help) Simulates pressing help pushbutton B-29 high avg time Reports/sets high range averaging time Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 254 Reports list of digital input, index numbers, and variables B-45 list var dout Reports list of digital output, index numbers, and variables B-45 low avg time Reports/sets low averaging time Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 255 Reports/sets NO span gas concentration B-27 no of lrec Reports/sets number of long records stored in memory B-23 no of srec Reports/sets number of short records stored in memory B-23 Reports current NO concentration B-10 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 256 Reports current measured sample flow in LPM B-11 sample gas Sets zero/span valves to sample gas mode B-33 save Stores parameters in FLASH B-37 save params Stores parameters in FLASH B-37 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 257: Measurements

    300 seconds, according to Table B–2. Send: avg time Receive: avg time 12:300 sec set avg time selection set high avg time selection set low avg time selection Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 258: Table B-2. Averaging Times

    These commands report the measured NO, NO , NO and prereactor concentrations when operating in single range, or high and low NO, NO B-10 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 259 This command reports the PMT cooler temperature. The example below reports that the PMT cooler temperature is -2.8 °C. Send: pmt temp Receive: pmt temp -2.8 deg C Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-11...
  • Page 260 In the example below, the instrument is reporting that the ozonator and PMT are both on, and that the instrument is in the span gas mode. Send: flags Receive: flags 80028000 B-12 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 261: Figure B-1. Flags

    C. The example below sets the chamber temperature alarm maximum value to 50.0 °C. Send: set alarm chamber temp max 50.0 Receive: set alarm chamber temp max 50.0 ok Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-13...
  • Page 262 C. The example below sets the converter temperature alarm maximum value to 340.0 °C. B-14 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 263 These commands report the pressure alarm minimum and maximum value current settings. The example below reports that the pressure alarm minimum value is 205 mmHg. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-15...
  • Page 264 Receive: alarm trig conc no 1 set alarm trig conc no value set alarm trig conc no2 value set alarm trig conc nox value set alarm trig conc pre value B-16 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 265: Table B-3. Alarm Trigger Values

    24.1 4.9 3.2 -3.2 clr records Datalogging This command will clear all long and short records that have been saved. Send: clear records Receive: clear records ok Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-17...
  • Page 266 1 35 CONC ALARM open 3 4 UNITS open 4 11 GEN ALARM closed 7 7 NO MODE open 8 8 NOX MODE open B-18 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 267 The format is defined by the current settings of “format” and “erec format” commands. For details on how to decode the flag fields within these records, see the “flags” command. Send: erec Receive: erec Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-19...
  • Page 268 100 records from the last record collected (record 740), and then returns 5 records: 640, 641, 642, 643, and 644. For details on how to decode the flag fields within these records, see the “flags” command. B-20 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 269 The example below shows the output format for long records is ASCII with text, according to Table B–4. Send: lrec format Receive: lrec format 01 set erec format format set lrec format format set srec format format Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-21...

  • Page 270: Table B-4. Record Output Formats

    7 blocks were reserved for long records and the maximum number of long records that can be stored in memory is 1426. Send: lrec mem size Receive: lrec mem size 1426 recs, 7 blocks B-22 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 271 The example below sets the memory allocation for long records to Note Issuing these commands will clear all the logging data memory. All the existing records should be retrieved using appropriate commands, if required. ▲ Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-23...
  • Page 272 “set copy sp to lrec”, “set copy sp to srec”, or “set copy sp to stream” commands. B-24 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 273: Table B-5. Stream Time Values

    These commands will auto-calibrate the NO, NO , and prereactor backgrounds. If the instrument is set to manual NO mode, the response to Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-25...
  • Page 274 The example below reports that the NO coefficient is 1.000. Send: no coef Receive: no coef 1.000 set no coef value set no2 coef value set nox coef value set high no coef value set high no2 coef value B-26 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 275 The example below sets the NO span gas concentration to 123.4 ppb. Send: set no gas 123.4 Receive: set no gas 123.4 ok Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-27...
  • Page 276 120.5 Receive: set pres cal 120.5 ok set cal pres This command automatically sets the current pressure as the calibration pressure. The example below successfully sets the calibration pressure. B-28 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 277: Keys/Display

    It is sent as a type '5' binary C-Link response with no checksum. The RLE encoding consists of a 0 followed by an 8-bit count of consecutive 0xFF bytes. The following 'c' code will expand the incoming data. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-29...
  • Page 278 BMP files are upside down relative to this data, i.e. the top display line is the last line in the BMP. screen This command is meant for backward compatibility on the C series. Screen information is reported using the “iscreen” command above. B-30 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 279: Table B-6. Standard Ranges

    Table B–6. The example below sets the NO full-scale range to 200 ppb. Send: set range 5 Receive: set range 5 ok Table B–6. Standard Ranges Selection μg/m Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-31...
  • Page 280 Receive: set range mode single ok gas mode This command reports the current mode of sample, zero, or span. The example below reports that the gas mode is sample. B-32 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 281 This command sets the gas units to ppb or μg/m . The example below sets the gas units to μg/m Send: set gas unit ug/m3 Receive: set gas unit ug/m3 ok Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-33...

  • Page 282: Hardware Configuration

    Receive: set temp comp off ok contrast Hardware This command reports the screen’s level of contrast. The example below Configuration shows the screen contrast is 50%, according to Table B–7. B-34 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 283: Table B-7. Contrast Levels

    Receive: set conv set temp 325 deg C ok date This command reports the current date. The example below reports the date as December 1, 2004. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-35...
  • Page 284 This command reports the status of the ozonator safety on or off. The example below reports that the ozonator safety is on. Send: ozonator safety Receive: ozonator safety on B-36 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 285 Receive: set save params ok time This command reports the current time (24-hour time). The example below reports that the internal time is 2:15:30 pm. Send: time Receive: time 14:15:30 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-37...

  • Page 286: Communications Configuration

    Receive: addr ip 192.168.1.15 set addr ip address This command sets the analyzer’s IP address, where address consists of four numbers ranging from 0-255 inclusive, separated by “.”. B-38 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 287 These commands enables and disables the DHCP service by either on or off. Changes to this parameter will only take effect when the analyzer is powered up. The example below sets the DHCP service on. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-39...

  • Page 288: Table B-8. Reply Termination Formats

    This command sets the host name string, where string is 1-13 alphanumeric characters. Send: set host name analyzer01 Receive: set host name analyzer01 ok instr name This command reports the instrument name. B-40 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 289 Receive: program no iSeries 42iTL 01.03.21.154 set layout ack This command disables the stale layout/layout change indicator (‘*’) that is attached to each response if the layout has changed. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-41...

  • Page 290: Table B-9. Analog Current Output Range Values

    This command reports the analog voltage output channel range, where channel is between 1 and 6 inclusive, according to Table B–10. Send: analog vout range 2 Receive: analog vout range 2 3 B-42 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 291: Table B-10. Analog Voltage Output Range Values

    (high or low). Use “list din var” command to obtain the list of supported index values and corresponding actions. Send: set din 1 3 high Receive: set din 1 3 high ok Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-43...

  • Page 292: Table B-11. Default Output Assignment

    Low NO Not Used Current Output High NO High/Low NO Current Output High NO High/Low NO Current Output High NO High/Low NO Current Output Not Used Low NO Range (NO B-44 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 293 “closed,” if all the relays are set to same state, that is all open or all closed. The example below shows that the status when all the relays logic is set to normally “open”. Send: relay stat Receive: relay stat open Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-45...

  • Page 294: Record Layout Definition

    (such as, all of the floating point inputs will be displayed with an 'f' output specifier, and all of the integer inputs will be displayed with a 'd' specifier). B-46 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 295: Format Specifier For Ascii Responses

    10^d. Thus the 16-bit field 0xFFC6 would be interpreted with the format specifier 'n3' as the number -0.058. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-47...

  • Page 296: Format Specifier For Erec Layout

    There are serious restrictions on where an 's' field may appear: currently sources 1 and 2 must be 's', and no others may be 's'. B-48 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 297: Alarm Information

    The command string should normally contain print-style formatting to include the user input. If a ‘|’ is present, it indicates a Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-49...

  • Page 298: Examples

    There is a no-translation button which creates a selection list of twelve "Code nn" options. The number of the user selection is used to create the output command. B-50 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 299 The background value is taken from the 7th element, and the precision specifier is taken from the 8th. If the asterisk were not present, it would indicate instead that 8 digits after the decimal point should be displayed. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual B-51...

  • Page 301: Appendix C Modbus Protocol

    This is achieved by using the supported MODBUS commands listed below. For details of the Model 42i Trace Level MODBUS Protocol specification, see the following topics: “Serial Communication Parameters”...

  • Page 302: Tcp Communication Parameters

    0x0000 to 0xFFFF (Passed back in response) Protocol Identifier 2 Bytes 0x00 (MODBUS protocol) Length 2 Bytes 0x0000 to 0xFFFF (Number of following bytes) Unit Identifier 1 Byte 0x00 to 0xFF (Passed back in response) Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 303: Function Code

    These requests specify the starting address, i.e. the address of the first output specified, and the number of outputs. The outputs are addressed starting at zero. Therefore, outputs numbered 1–16 are addressed as 0–15. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 304 1 Byte 0x01 or 0x02 Exception code 1 Byte 01=Illegal Function, 02=Illegal Address, 03=Illegal Data, 04=Slave Device Failure Here is an example of a request and response to read outputs 2–15: Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 305: X03/0X04) Read Holding Registers / Read Input Registers

    For each register, the first byte contains the high order bits and the second contains the low order bits. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 306 No. of Registers Hi 0x00 No. of Registers Lo 0x04 Response Field Name (Hex) Function 0x03 Byte Count 0x06 Register value Hi (10) 0x02 Register value Lo (10) 0x2B Register value Hi (11) 0x00 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 307: X05) Force (Write) Single Coil

    0x0000 to maximum allowed by instrument Output Value 2 Bytes 0x0000 or 0xFF00 Error Response Function code 1 Byte Function code + 0x80 Exception code 1 Byte 01=Illegal Function, 02=Illegal Address, 03=Illegal Data, 04=Slave Device Failure Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 308: Table C-1. Read Coils For 42I Trace Level

    Output Value Hi Output Value Lo MODBUS Parameters The following Table C–1 through Table C–3 lists the MODBUS parameters supported for the Model 42i Trace Level. Supported Table C–1. Read Coils for 42i Trace Level Coil Number Status AUTORANGE (NOx) LOCAL/REMOTE SERVICE...

  • Page 309: Table C-2. Read Registers For 42I Trace Level

    I/O EXP BD STATUS ALARM NOT USED CONC ALARM SAMPLE MODE PURGE MODE NOT USED ZERO CHECK/CAL ALARM SPAN CHECK/CAL ALARM Table C–2. Read Registers for 42i Trace Level Register Number Variable 40001&40002 40003&40004 Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 310 ANALOG IN 2 40059&40060 ANALOG IN 3 40061&40062 ANALOG IN 4 40063&40064 ANALOG IN 5 40065&40066 ANALOG IN 6 40067&40068 ANALOG IN 7 40069&40070 ANALOG IN 8 40071&40072 OZONATOR FLOW C-10 Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 311: Table C-3. Write Coils For 42I Trace Level

    40103&40104 HIGH NOx CORRECTION CONC* 40105&40106 NOT USED 40107&40108 NOT USED *If O Correction Option is installed. Table C–3. Write Coils for 42i Trace Level Coil Number Action Triggered ZERO MODE SPAN MODE NO MODE NOX MODE NOT USED PRE MODE...

  • Page 313: Appendix D Geysitech (Bayern-Hessen) Protocol

    This is achieved by using the supported Geysitech commands listed below. For details of the Model 42i Trace Level Geysitech Protocol specification, see the following topics: “Serial Communication Parameters”...

  • Page 314: Tcp Communication Parameters

    Each Command is framed by control characters, <STX> at the start and terminated with either <ETX> or <CR>. If a command is terminated with <ETX> then additional two characters <BCC> is attached after <ETX>, this is the block checksum. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 315: Block Checksum

    Command ‘K’ switches the instrument gas mode to Span mode. Command ‘M’ switches the instrument gas mode to Sample mode. The following are the different acceptable formats of the ST command: <STX>ST<address><control command><ETX><BCC> <STX>ST<address><control command><CR> <STX>ST<address><SP><control command><CR> <STX>ST<address><SP><control command><ETX><BCC> Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 316 <STX> which is followed by the characters DA, and the <address> (if present) matches the Instrument Address, and the command is terminated with either <CR> with no checksum or <ETX> followed by the correct checksum <BCC>. Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...
  • Page 317 Table D–1 Table D–2 below. <SFKT>: is the space provided for future use for special function, it currently contains a string of ten 0’s i.e. <0000000000>. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...

  • Page 318: Measurements Reported In Response To Da Command

    The 8 measurements reported in dual or auto range modes include: low NO ● low NO ● low NO ● low PRE ● high NO ● high NO ● high NO ● high PRE ● Model 42i Trace Level Instruction Manual Thermo Fisher Scientific...

  • Page 319: Table D-1. Operating Status For Model 42I Trace Level

    Table D–1 for operating status and Table D–2 for error status for the Model 42i Trace Level. Status Table D–1. Operating Status for Model 42i Trace Level Hex-value Operating status: Service Mode (On) Maintenance (Local) Zero gas (On) Span gas (On)

  • Page 321: Standards For Trace Level Analyzers

    ± 5%. Multi-point concentrations from 0.5 ppb to 10 ppb may be similarly generated, establishing the linearity of the particular analyzer being calibrated. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...
  • Page 322 24 hours may be required. The Model 42i Trace Level analyzer has zero air diagnostic capability built within the instrument. The monitor has three channels, a NO, No , and prereactor channel.
  • Page 323 Although extra care is required, primarily in zero air generation, users familiar with normal compliance requirements should be able with minimal additional effort to obtain valid concentration data. Thermo Fisher Scientific Model 42i Trace Level Instruction Manual...