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Thermo 49i Instruction Manual

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Model 49i
Primary Standard
Instruction Manual
UV Photometric O
Calibrator
3
Part number 102474-00
11Jan2008

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  • Page 1 Model 49i Primary Standard Instruction Manual UV Photometric O Calibrator Part number 102474-00 11Jan2008...
  • 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...

  • Page 3: Weee Compliance

    Further information on Thermo Fisher Scientific’s compliance with these Directives, the recyclers in your country, and information on Thermo Fisher Scientific products which may assist the detection of substances subject to the RoHS Directive are available at: www.thermo.com/WEEERoHS.

  • Page 5: Table Of Contents

    Set Custom Ranges ............3-11 Averaging Time..............3-12 Calibration Factors Menu .............3-12 Background..............3-13 Span Coefficients ............3-13 Instrument Controls Menu ...........3-15 Custom Levels..............3-15 Pump .................3-16 Temperature Compensation..........3-16 Pressure Compensation ............3-17 Datalogging Settings ............3-17 Communication Settings............3-27 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 6 Response Coefficient ............3-71 Manual O Lamp Setting...........3-71 Pressure Calibration ............3-72 Flow A and B Calibration ..........3-74 Temperature Calibration............3-76 Analog Output Calibration ..........3-77 Analog Input Calibration ...........3-79 Display Pixel Test ..............3-81 Restore User Defaults............3-81 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 7 Replacement Parts List ............6-4 Cable List................6-6 External Device Connection Components ......6-6 Removing the Measurement Bench and Lowering the Partition Panel...........6-8 Fuse Replacement ..............6-9 Pump Replacement ...............6-10 Fan Replacement..............6-11 Analog Output Testing ............6-12 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 8 Ozonator Lamp Power Supply ..........7-3 Photometer Lamp power Supply..........7-3 Optical Bench Temperature Thermistor ......7-3 Pump ...................7-3 Sample/Reference Solenoid Valves ........7-3 Software ..................7-3 Instrument Control..............7-4 Monitoring Signals...............7-4 Measurement Calculations ...........7-4 Output Communication ............7-5 viii Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 9 Measurements ................ B-8 Alarms.................. B-12 Diagnostics ................B-17 Datalogging ................. B-17 Calibration................B-25 Keys/Display ................ B-28 Measurement Configuration ..........B-29 Hardware Configuration ............B-34 Communications Configuration .......... B-36 I/O Configuration..............B-40 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 10 Block Checksum <BCC> ............D-3 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 for 49i and 49i PS........D-7 Operating and Error Status ..........D-8 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 11 Figures Figures Model 49i Primary Standard Flow Schematic ......1-3 Remove the Packing Material ..........2-2 Remove the Shipping Screws ...........2-2 Model 49i Primary Standard Rear Panel ........2-4 I/O Terminal Board Views ............2-5 D/O Terminal Board Views ............2-6 25-Pin Terminal Board Views ..........2-7 49i Primary Standard Front Panel Display ......3-2...
  • Page 12 Figures Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 13 Measurement Interface Board Connector Pin Descriptions ....5-17 Ozonator Power Supply Connector Pin Descriptions ......5-19 Photometer Power Supply Connector Pin Descriptions ......5-20 Model 49i Primary Standard Replacement Parts ........6-4 Model 49i Primary Standard Cables ............6-6 External Device Connection Components ..........6-6 Analog Output Channels and Rear Panel Pin Connections ....
  • Page 14 Tables Operating Status for Model 49i and 49i Primary Standard ..... D-8 Error Status for Model 49i and 49i Primary Standard ......D-8 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 15: About This Manual

    Appendix B “C-Link Protocol Commands” provides a description of the C-Link protocol commands that can be used to remotely control an analyzer using a host device such as a PC or a datalogger. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 16 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 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 17 The service procedures in this manual are restricted to qualified service personnel only. The Model 49i Primary Standard is supplied with a three-wire grounding cord. Under no circumstances should this grounding system be defeated. CAUTION If the LCD panel breaks, do not to let the liquid crystal contact your skin or clothes.
  • Page 18 Where to Get Help 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 Thermo Fisher Scientific...

  • Page 19: Introduction

    Introduction Chapter 1 The Model 49i Primary Standard UV Photometric Ozone Calibrator combines proven detection technology, easy to use menu-driven software, and advanced diagnostics to offer unsurpassed flexibility and reliability. The Model 49i Primary Standard has the following features: •...

  • Page 20: Principle Of Operation

    I = UV light intensity of sample with ozone (sample gas) = UV light intensity of sample without ozone (reference gas) Zero air is supplied to the Model 49i Primary Standard through the zero air bulkhead and is split into two gas streams, as shown in Figure 1-1. One gas...

  • Page 21: Specifications

    Figure 1-1. Model 49i Primary Standard Flow Schematic Specifications Table 1-1. Model 49i Primary Standard Specifications...
  • Page 22 0.025-1.000 ppm at 3-4 LPM Response (to 98% or 5 1 minute ppb of final value, whichever is greater) ± 4 ppb or ± 1% of reading, whichever is greater Stability *In non condensing environments. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 23: Installation

    Equipment Damage Do not attempt to lift the instrument by the cover or other external fittings. Unpacking and The Model 49i Primary Standard is shipped complete in one container. If Inspection there is obvious damage to the shipping container when you receive the instrument, notify the carrier immediately and hold for inspection.

  • Page 24: Remove The Packing Material

    4. Remove the three shipping screws (Figure 2-2). Shipping Screws (3) Figure 2-2. Remove the Shipping Screws 5. Check for possible damage during shipment. 6. Check that all connectors and circuit boards are firmly attached. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 25: Setup Procedure

    4. Plug the instrument into an outlet of the appropriate voltage and frequency. WARNING The Model 49i Primary Standard is supplied with a three-wire grounding cord. Under no circumstances should this grounding system be defeated. 5. Connect the instrument to be calibrated to the OZONE bulkhead. The total flow though the ozonator should be set to at least 1 LPM.

  • Page 26: Connecting External Devices

    Installation Connecting External Devices Figure 2-3. Model 49i Primary Standard Rear Panel Connecting External Several components are available for connecting external devices to iSeries Devices instruments. These connection options include: • Individual terminal board PCB assemblies • Terminal block and cable kits (optional) •...

  • Page 27: I/O Terminal Board Pin Descriptions

    Component Side Viewed from Top of Board Detail “A” Detail “B” Assembled Connector Figure 2-4. I/O Terminal Board Views Table 2-1. I/O Terminal Board Pin Descriptions Signal Description Signal Description Analog1 Power_Fail_NC Analog ground Power_Fail_COM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 28: D/O Terminal Board Views

    See Detail “A” See Detail “B” Component Side Viewed from Top of Board Detail “B” Detail “A” Assembled Connector Figure 2-5. D/O Terminal Board Views Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 29: D/O Terminal Board Pin Descriptions

    The 25-pin terminal board is included with the optional I/O Expansion Board. See Detail “A” See Detail “B” Component Side Viewed from Top of Board Detail “B” Detail “A” Assembled Connector Figure 2-6. 25-Pin Terminal Board Views Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 30: Startup

    2. Allow 90 minutes for the instrument to stabilize. 3. Set instrument parameters such as operating ranges and averaging times to appropriate settings. For more information about instrument parameters, see the “Operation” chapter. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 31: Operation

    • “Service Menu” page 3-66 describes service related menu items. • “Password Menu” page 3-82 describes how to enter/change a password, lock and unlock the calibrator. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 32: Display

    Figure 3-1. 49i Primary Standard Front Panel Display CAUTION If the LCD panel breaks, do not let the liquid crystal contact your skin or clothes. If the liquid crystal contacts your skin or clothes, wash it off immediately using soap and water.

  • Page 33: Pushbuttons

    ) move the cursor up, down, left, and right or = Left, Right change values and states in specific screens. = Enter is used to select a menu item, accept/set/save a change, and/or toggle on/off functions. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 34: Soft Keys

    RANGE DIAGS ALARM Software Overview The Model 49i Primary Standard utilizes the menu-driven software illustrated by the flowchart in Figure 3-3. The Power-Up screen, shown at the top of the flowchart, is displayed each time the instrument is turned on.

  • Page 36: Power-Up Screen

    Operation Software Overview Power-Up Screen The Power-Up screen is displayed on power up of the Model 49i Primary Standard. The Self-Test is displayed while the internal components are warming up and diagnostic checks are performed. Run Screen The Run screen displays the O concentration.

  • Page 37: Main Menu

    The Range menu allows the operator to select the gas units, O range, and to set the custom ranges. • In the Main Menu, choose Range. RANGE: >GAS UNITS RANGE SET CUSTOM RANGES RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 38: Gas Units

    0 and 500 ppb. The display shows the current O range. The next line of the display is used to change the range. Table 3-2 lists the standard ranges. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 39: O3 Range

    C1, C2, and C3 are custom ranges. The analog outputs are arranged on the rear panel connector as shown in Figure 3-4. See Table 3-3 for channels and pin connections. For more information about custom ranges, see “Set Custom Ranges” below. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 40: Pin-Out Of Rear Panel Connector

    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 may not apply. 3-10 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 41: Set Custom Ranges

    • Press to save the new range. CUSTOM RANGE 1: CURRENTLY: 550.0 SET TO: 000550.1 MOVE CURSOR CHANGE VALUE SAVE RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-11...

  • Page 42: Averaging Time

    DIAGS ALARM Calibration Factors Calibration factors are used to make minor compensations to the O Menu concentration, when the Model 49i Primary Standard is being precisely matched to a NIST traceable O calibrator. The Calibration Factors menu displays the calibration factors.

  • Page 43: O 3 Background

    Span Coefficients The O span coefficients is s used to make small adjustments to the output level. This adjustment should only be made when the Model 49i Primary Standard is being precisely matched to a NIST traceable O calibrator. Normally, the Model 49i Primary Standard does not require any compensation.
  • Page 44 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 3-14 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 45: Instrument Controls Menu

    In the Main Menu, choose Instrument Controls > Custom Levels > Custom Level 1, 2, 3, 4 or 5. • to increment or decrement the numeric value. • Press to save the new level. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-15...

  • Page 46: Pump

    Temperature compensation provides compensation for any changes to the instrument's output signal due to variations in sample gas temperature. The Compensation Model 49i Primary Standard can be operated with or without temperature compensation. When temperature compensation is on, the display shows the sample gas temperature (measured by a thermistor on the Interface board).

  • Page 47: Pressure Compensation

    Pressure compensation provides compensation for any changes to the instrument's output signal due to variations of sample pressure. The Model 49i Primary Standard can be operated with or without pressure compensation. When pressure compensation is on, the first line of the display represents the current sample pressure.
  • Page 48 In the Main Menu, choose Instrument Controls > Datalogging Settings > Select SREC or LREC > View Logged Data. • to toggle between number of records or date and time. • Press to accept. 3-18 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 49 SAVE RANGE DIAGS ALARM The Record Display screen (read only) displays the selected records. • to view all the items in the record. • to view records at different times. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-19...
  • Page 50 ACCEPT AS SHOWN RANGE DIAGS ALARM The Record Display screen (read only) displays the selected records. • to view all the items in the record. • to view records at different times. 3-20 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 51 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. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-21...
  • Page 52 In the Main Menu, choose Instrument Controls > Datalogging Settings > Select Content > Select Field > Concentrations. • to move the cursor up and down. • Press to select a new choice. 3-22 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 53 The Analog Inputs screen allows the user to select the output signal (none or analog inputs 1-8) that is tied to the selected field item. The selected item is shown by “<--” after it. Note that at this point, pressing indicates Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-23...
  • Page 54 In the Main Menu, choose Instrument Controls > Datalogging Settings > Commit Content. • Press to commit changes to selected record format and erase record log file data. • Press to confirm changes. 3-24 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 55 Configure Datalogging The Configure Datalogging menu deals with datalogging configuration for the currently selected record type. • In the Main Menu, choose Instrument Controls > Datalogging Settings > Configure Datalogging. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-25...
  • Page 56 > Configure Datalogging > Memory Allocation %. • to scroll through a list of choices. • Press to set the percentage for both record types and proceed to the erasure warning screen. 3-26 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 57: Communication Settings

    CHANGE VALUE SAVE RANGE DIAGS ALARM Communication Settings The Communication Settings menu is used with communications control and configuration. • In the Main Menu, choose Instrument Controls > Communication Settings. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-27...
  • Page 58 ID number if two or more of the same calibrator are connected to one computer. Valid Instrument ID numbers are from 0 to 127. The Model 49i Primary Standard has a default Instrument ID of 49. For more information about the Instrument ID, see Appendix B “C-Link Protocol Commands”...
  • Page 59 Choices are Concentrations, Other Measurements, and Analog Inputs (if the I/O expansion board option is installed). • In the Main Menu, choose Instrument Controls > Communication Settings > Streaming Data Config. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-29...
  • Page 60 • Press to save the new streaming data period. STREAMING DATA INTERVAL: CURRENTLY: 10 SEC SET TO: 20 SEC ? CHANGE VALUE SAVE VALUE RANGE DIAGS ALARM 3-30 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 61 In the Main Menu, choose Instrument Controls > Communication Settings > Streaming Data Config > Select Item > Other Measurements. • to move the cursor up and down. • Press to select a new choice. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-31...
  • Page 62 Note Disconnect the serial cable before changing RS-232 and RS-485 selection to prevent damage to the connected equipment. • In the Main Menu, choose Instrument Controls > Communication Settings > RS-232/RS-485 Selection. 3-32 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 63 • In the Main Menu, choose Instrument Controls > Communication Settings > TCP/IP Settings > Use DCHP. • Press to toggle and set DHCP on or off. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-33...
  • Page 64 DHCP, see “Use DHCP.” • In the Main Menu, choose Instrument Controls > Communication Settings > TCP/IP Settings > Netmask. • to move and change the value of the netmask. 3-34 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 65 In the Main Menu, choose Instrument Controls > Communication Settings > TCP/IP Settings > Host Name. • to move the cursor or change between the edit field and the alpha page. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-35...

  • Page 66: I/O Configuration

    Note The digital outputs may take up to one second after the assigned state occurs to show up on the outputs. • In the Main Menu, choose Instrument Controls > I/O Configuration > Output Relay Settings. 3-36 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 67 • In the Main Menu, choose Instrument Controls > I/O Configuration > Output Relay Settings > Select Relay > Instrument State. CHOOSE SIGNAL TYPE: >ALARMS NON-ALARM RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-37...
  • Page 68 In the Main Menu, choose Instrument Controls > I/O Configuration > Output Relay Settings > Select Relay > Instrument State > Non-Alarm. • to scroll through a list of choices. • Press to save the new selection for the relay. 3-38 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 69 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 49i Primary Standard Instruction Manual 3-39...
  • Page 70 The Analog Output Configuration menu displays a list of the analog output channels available for configuration. Channel choices include all voltage channels, all current channels, voltage channels 1-6, and current channels 3-40 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 71 In the Main Menu, choose Instrument Controls > I/O Configuration > Analog Output Config > Select Channel > Select Range. • to scroll through a list of choices. • Press to save the new range. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-41...
  • Page 72 Range Status Recommend not to change the setting for this output Intensity A User-set alarm min value User-set alarm max value Intensity B User-set alarm min value User-set alarm max value 3-42 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 73 Analog Output Config > Select Channel > Choose Signal To Output. • to move the cursor up and down. • Press to select a choice. CHOOSE ITEM SIGNAL: CONCENTRATIONS OTHER MEASUREMENTS ANALOG INPUTS RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-43...
  • Page 74 1-10 points in the table, and corresponding number of points selected. • In the Main Menu, choose Instrument Controls > I/O Configuration > Analog Input Config. 3-44 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 75 Analog Input Config > Select Channel > Descriptor. • Press to save the new descriptor. ANALOG INPUT DESCRIPTOR: CURRENTLY: IN1 ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 ./- SAVE RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-45...
  • Page 76 The Number of Table Points screen allows the user to select how many points are used in the conversion table. The points range from 2 to 10, with a default of 2. 3-46 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 77 In the Main Menu, choose Instrument Controls > I/O Configuration > Analog Input Config > Select Channel > Select Point > Volts. • to move the cursor left or right. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-47...

  • Page 78: Screen Contrast

    The Screen Contrast screen is used to change the contrast of the display. Intensities between 0 and 100% in increments of 10 are available. Changing the screen contrast may be necessary if the calibrator is operated at extreme temperatures. 3-48 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 79: Service Mode

    Model 49i Primary Standard. For more information about the service mode, see “Service Menu” later in this chapter. Note The service mode should be turned off when finished, as it prevents remote operation.

  • Page 80: Diagnostics Menu

    >PROGRAM VERSION VOLTAGES TEMPERATURES PRESSURE FLOWS CELL A/B O3 INTENSITIES RANGE DIAGS ALARM ANALOG INPUT READINGS ANALOG INPUT VOLTAGES DIGITAL INPUTS RELAY STATES TEST ANALOG OUTPUTS INSTRUMENT CONFIGURATION CONTACT INFORMATION 3-50 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 81: Program Version

    Motherboard Voltages The Motherboard screen (read only) is used to display the current voltage readings on the motherboard. • In the Main Menu, choose Diagnostics > Voltages > Motherboard Voltages. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-51...
  • Page 82 In the Main Menu, choose Diagnostics > Voltages > I/O Board Voltages. I/O BOARD VOLTAGES: 3.3 SUPPLY 3.3 V 5.0 SUPPLY 5.0 V 24.0 SUPPLY 24.0 V -3.3 SUPPLY -3.3 V RANGE DIAGS ALARM 3-52 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 83: Temperatures

    The Flows screen (read only) displays the current flow rate through Cell A and Cell B. These flows are measured by internal flow sensors. For more information, see Chapter 1, “Operations”. • In the Main Menu, choose Diagnostics > Flows. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-53...

  • Page 84: Cell A/B O 3

    Cell B in Hertz. These intensities are read by detectors A and B, respectively. • In the Main Menu, choose Diagnostics > Intensities. INTENSITIES: CELL A 100425 Hz CELL B 100465 Hz RANGE DIAGS ALARM 3-54 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 85: 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. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-55...

  • Page 86: 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 3-56 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 87: Test Analog Outputs

    • In the Main Menu, choose Diagnostics > Instrument Configuration. • Press to toggle instrument configuration (in service mode only). INSTRUMENT CONFIGURATION: >I/O EXPANSION BOARD RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-57...

  • Page 88: Contact Information

    I/O expansion board status (if installed) indicates that the power supplies are working and connections are successful. There are no setting screens for these alarms. • In the Main Menu, choose Alarms. 3-58 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 89: O Lamp Temperature

    In the Main Menu, choose Alarms > O Lamp Temp > Min or Max. • to increment or decrement the numeric value. • Press to save set to value as actual value. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-59...
  • Page 90 In the Main Menu, choose Alarms > Lamp Temp > Min or Max. • to increment or decrement the numeric value. • Press to save set to value as actual value. 3-60 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 91: Bench Temperature

    In the Main Menu, choose Alarms > Bench Temp > Min or Max. • to increment or decrement the numeric value. • Press to save set to value as actual value. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-61...

  • Page 92: Pressure

    In the Main Menu, choose Alarms > Pressure > Min or Max. • to increment or decrement the numeric value. • Press to save set to value as actual value. 3-62 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 93: Flow A And B

    In the Main Menu, choose Alarms > Select Flow > Min or Max. • to increment or decrement the numeric value. • Press to save set to value as actual value. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-63...

  • Page 94: Intensity A And B

    In the Main Menu, choose Alarms > Select Intensity > Min or Max. • to increment or decrement the numeric value. • Press to save set to value as actual value. 3-64 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 95: O Concentration

    Concentration > Min or Max. • to move the cursor left or right. • to increment or decrement the numeric value. • Press to save set to value as actual value. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-65...

  • Page 96: Service Menu

    Advanced diagnostic functions are included in the service mode. Meaningful data should not be collected when the calibrator is in the service mode. • In the Main Menu, choose Service. 3-66 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 97: Pressure Check

    Sample Pressure The Sample Pressure screen (read only) displays the pressure of the sample gas in Cell B. • In the Main Menu, choose Service > Pressure Check > Sample Pressure. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-67...
  • Page 98 DETECTED” appears. After 20 seconds, if the pressure is less than 390 mmHg and the flow is less than 0.010 LPM, the words “PUMP OK” appears. • In the Main Menu, choose Service > Pressure Check > Pump Pressure. 3-68 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 99: Lamp Setting

    75,000 Hz or higher than 125,000 Hz, this calibration will not be successful. It is crucial that the lamp intensity be set such that both detector intensities fall inside this range before performing this calibration. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-69...

  • Page 100: Intensity Check

    (only with sample gas instead of reference gas). • In the Main Menu, choose Service > Intensity Check > Int A or B Ref or Sample. 3-70 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 101: O3 Response Coefficient

    Lamp Setting screen is used to manually control the O output concentration by adjusting the ozonator lamp intensity. In this mode, the automatic feedback control of the ozonator is defeated. This is Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-71...

  • Page 102: Pressure Calibration

    Note This adjustment should only be performed by an instrument service technician. • In the Main Menu, choose Service > Pressure Calibration. PRESSURE SENSOR CAL: >ZERO SPAN 1.1447 SET DEFAULTS RANGE DIAGS ALARM 3-72 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 103 • Press to save set to value as actual value. CALIBRATE PRESSURE SPAN: CURRENTLY: 753.4 mmHg SET TO: 760.0 mmHg ? MOVE CURSOR CHANGE VALUE SAVE RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-73...

  • Page 104: Flow A And B Calibration

    Note This adjustment should only be performed by an instrument service technician. • In the Main Menu, choose Service > Flow Calibration A or B. FLOW SENSOR CAL: >ZERO SPAN 1.0000 SET DEFAULTS RANGE DIAGS ALARM 3-74 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 105 In the Main Menu, choose Service > Select Flow Calibration A or B > Span. • to move and change the value. • Press to save set to value as actual value. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-75...

  • Page 106: 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 > Temperature Calibration. 3-76 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 107: Analog Output Calibration

    In the Main Menu, choose Service > Analog Out Calibration. ANALOG OUTPUT CAL: >VOLTAGE CHANNEL 1 VOLTAGE CHANNEL 2 VOLTAGE CHANNEL 3 VOLTAGE CHANNEL 4 VOLTAGE CHANNEL 5 VOLTAGE CHANNEL 6 CURRENT CHANNEL 1 RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-77...
  • Page 108 • In the Main Menu, choose Service > Analog Out Calibration > Select Channel > Calibrate Full Scale. • Use the to increment or decrement the numeric value. 3-78 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 109: Analog Input Calibration

    INPUT CHANNEL 2 INPUT CHANNEL 3 INPUT CHANNEL 4 INPUT CHANNEL 5 INPUT CHANNEL 6 INPUT CHANNEL 7 RANGE DIAGS ALARM ANALOG INPUT CAL: >CALIBRATE ZERO CALIBRATE FULL SCALE RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-79...
  • Page 110 • Press to save the value. ANALOG INPUT CAL: SPAN PROVIDE VOLTAGE TO INPUT! SELECTED INPUT: INPUT 1 CURRENTLY: 6.24 V SET TO: 10.00 CALIBRATE TO VALUE RANGE DIAGS ALARM 3-80 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 111: Display Pixel Test

    RESTORE USER DEFAULTS: RESTORE USER DEFAULTS: RESTORE RESTORE ARE YOU SURE YOU WANT TO?x PRESS TO CONFIRM RESTORE RANGE DIAGS ALARM RANGE DIAGS ALARM Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-81...

  • Page 112: Password Menu

    • In the Main Menu, choose Password > Lock Instrument. • Press to enable instrument lock and returns to main menu. 3-82 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 113: Change Password

    The remove password is shown if the calibrator is unlocked and the password set. • In the Main Menu, choose Password > Remove Password. • Press to remove password and returns to main menu. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-83...

  • Page 114: Unlock Instrument

    In the Main Menu, choose Password > Unlock Instrument. • Press to disable instrument lock and returns to main menu. ENTER THE PASSWORD: ASSSSSSSSS ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 ./- SAVE RANGE DIAGS ALARM 3-84 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 115: Chapter 4 Preventive Maintenance

    • “Lamp Replacement” page 4-3 • “Monitoring Detector Frequencies and Noise” page 4-4 • “Capillary Service” page 4-5 • “Pump Rebuilding” page 4-6 • “Leak Test and Pump Checkout” page 4-7 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 116: Safety Precautions

    WARNING If the equipment is operated in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. The Model 49i Primary Standard is supplied with a three-wire grounding cord. Under no circumstances should this grounding system be defeated.

  • Page 117: Lamp Replacement

    Noisy output signal, which has been traced to an unstable lamp (see the “Troubleshooting” chapter). It is not necessary to recalibrate the Model 49i Primary Standard since it is a ratio instrument and replacing the lamp does not affect the calibration.

  • Page 118: Monitoring Detector Frequencies And Noise

    Preventive Maintenance Monitoring Detector Frequencies and Noise Monitoring Detector The Model 49i Primary Standard measures intensity ratios and not absolute Frequencies and values. Therefore, a large range of detector frequencies are acceptable for proper operation of the instrument. The nominal values are 65 to 120 kHz.

  • Page 119: Monitoring Lamp Noise

    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, unplug the power cord, and remove the cover. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 120: Pump Rebuilding

    1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Loosen the fittings and remove both lines going to the pump. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 121: Leak Test And Pump Checkout

    Leak Test and Pump Use the following procedures to test for system leaks and checkout the Checkout pump. External Leaks Use the following procedure to test for leaks around the fittings. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 122: Solenoid Leaks

    Use the following procedure to check for solenoid leaks. 1. Generate an ozone concentration of approximately 0.5 ppm. 2. Press to display the Main Menu. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 123: Solenoid Leak Test

    Main Menu. 5. Press to scroll to Diagnostics and press to display the Diagnostics menu. 6. Use to scroll to Pressure and press to display the Pressure screen. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 124 10. Note the pressure as P the solenoid is faulty 11. The solenoid is faulty if either P or P is greater than the pressure determined in the “External Leaks” section described previously. 4-10 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 125: Troubleshooting

    The service mode in the “Operation” chapter includes parameters and functions that are useful when making adjustments or diagnosing problems. The Technical Support Department at Thermo Fisher Scientific can also be consulted in the event of problems. See “Service Locations” at the end of this chapter for contact information.

  • Page 126: Troubleshooting - General Guide

    Cell A and B frequency Dirty cells Clean cells low or zero Light adjustment Check for 1.7 volt peak to peak waveform at lamp current check point on Lamp Power Supply Board Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 127 Clean cell Sticky solenoid valve Replace with known good solenoid valve. Slow response Averaging time Verify averaging time is set properly Contaminated optical bench Clean bench and then condition system overnight Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 128: Troubleshooting - Alarm Messages

    Alarm - O Conc. Concentration has exceeded range Check to insure range limit corresponds with expected value. If not select proper range. Concentration low Check user-defined low set point, set to zero. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 129 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 49i Primary Standard Instruction Manual...

  • Page 130: Connection Diagrams

    2 Pin FRONT PANEL POWER SW TR ANSF O R ME R 3 Pin (90V AC or 240V AC O P TIO NS) Figure 5-1. Board-Level Connection Diagram - Common Electronics Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 131: Board-Level Connection Diagram - Measurement System

    2 Pin SAMPLE SOL. 2 Pin REF SOL. 2 Pin OZ SOL. 2 Pin 2 Pin 2 Pin PUMP AC 3 Pin 3 Pin Figure 5-2. Board-Level Connection Diagram - Measurement System Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 132: Connector Pin Descriptions

    +RS485 to Expansion Board -RS485 to Expansion Board SPARE DATA +24V +24V Ground Ground Ground +RS485 to Spare Board -RS485 to Spare Board Power Fail Relay N.C. Contact Ground TTL Input 1 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 133 TTL Input 6 Ground TTL Input 9 TTL Input 11 TTL Input 12 TTL Input 14 TTL Input 16 Ground Analog Voltage Output 2 Analog Voltage Output 4 Ground Analog Voltage Output 6 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 134 SPI Output SPI Board Select SPI Clock EXT. RS485 -RS485 to Rear Panel +RS485 to Rear Panel Ground Ground Ground +24V +24V +24V +24V +24V 24V MONITOR 24V Power Monitor Ground 5-10 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 135 Keypad Row 1 Input Keypad Row 4 Input Keypad Row 3 Input Keypad Col 2 Select Keypad Col 1 Select Keypad Col 4 Select Keypad Col 3 Select Ground Ground Ground Ground Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 5-11...
  • Page 136 Serial Port 2 TX (-RS485 OUT) Ground Serial Port 2 RTS (+RS485 OUT) Serial Port 2 CTS (-RS485 IN) AC IN AC-HOT AC-NEUT AC-Ground AC 24VPWR AC-HOT AC-NEUT AC-Ground AC INTF BD AC-HOT AC-NEUT AC-Ground 5-12 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 137: Front Panel Board Connector Pin Diagram

    Keypad Row 1 Input Keypad Row 4 Input Keypad Row 3 Input Keypad Col 2 Select Keypad Col 1 Select Keypad Col 4 Select Keypad Col 3 Select Ground Ground Ground Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 5-13...
  • Page 138 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 Ground 5-14 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 139: I/O Expansion Board (Optional) Connector Pin Descriptions

    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 Ground Ground Ground Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 5-15...

  • Page 140: Digital Output Board Connector Pin Descriptions

    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 Solenoid Drive Output 3 5-16 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 141: Measurement Interface Board Connector Pin Descriptions

    Table 5-7. Measurement Interface Board Connector Pin Descriptions Connector Reference Signal Label Designator Description PHOTOMETER Photometer Lamp Intensity Control Voltage Output Photometer Lamp Intensity Control Voltage Input Photometer Heater Thermistor Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 5-17...
  • Page 142 Ozonator Lamp Intensity Control Voltage Output Ozonator Lamp Intensity Control Voltage Input Ozonator Heater Thermistor +24V Ground Ozonator Lamp On/off Control Ground Ground +15V -15V Ground Measurement Frequency A +15V -15V 5-18 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 143: Ozonator Power Supply Connector Pin Descriptions

    Sample Solenoid Control +24V Reference Solenoid Control OZ SOL. +24V Ozone Solenoid Control Table 5-8. Ozonator Power Supply Connector Pin Descriptions Connector Reference Signal Label Designator Description LAMP Ozonator Lamp Voltage Out Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 5-19...

  • Page 144: Photometer Power Supply Connector Pin Descriptions

    Photometer Lamp Thermistor 1 Photometer Lamp Heater Control Ground +24V Heater Current Sense Photometer Lamp Thermistor 2 INTF Photometer Lamp Intensity Control Voltage Input Photometer Lamp Intensity Control Voltage Output 5-20 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 145: Service Locations

    Photometer Lamp On/off Control Ground Ground Service Locations For additional assistance, Thermo Fisher Scientific has service 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.
  • Page 146 Troubleshooting Service Locations 5-22 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 147: Chapter 6 Servicing

    Servicing Chapter 6 This chapter explains how to replace the Model 49i Primary Standard 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 148 6-32 “Flow Transducer Replacement” page 6-34 “Flow Transducer Calibration” page 6-35 “Ozonator Lamp Replacement” page 6-36 “Ozonator Lamp Heater Replacement” page 6-37 “Ozonator Replacement” page 6-39 “Ozonator Board Replacement” page 6-39 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 149: Safety Precautions

    If the equipment is operated in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. The Model 49i Primary Standard is supplied with a three-wire grounding cord. Under no circumstances should this grounding system be defeated.

  • Page 150: Model 49I Primary Standard Replacement Parts

    Press > to return to the Main Menu. d. Return to the procedure. Replacement Parts Table 6-1 lists the replacement parts for the Model 49i Primary Standard List major subassemblies. Refer to Figure 6-2 to identify the component location.

  • Page 151: Replacement Parts List

    Servicing Replacement Parts List Table 6-1. Model 49i Primary Standard Replacement Parts, continued Part Number Description 100542-00 I/O Expansion Board (Optional) 102340-00 Front Panel Connector Board 102496-00 Front Panel Display 101399-00 Transformer, 220-240VAC (Optional) 101863-00 Transformer, 100VAC (Optional) 100874-00 Measurement Interface Board...

  • Page 152: Model 49I Primary Standard Cables

    Servicing Cable List Cable List Table 6-2 describes the Model 49i Primary Standard cables. See the “Troubleshooting” chapter for associated connection diagrams and board connector pin descriptions. Table 6-2. Model 49i Primary Standard Cables Part Number Description 101036-00 DC Power Supply, 24V Output...

  • Page 153: Component Layout

    Solenoid Assembly Sample Valve Flow Transducer B Reference Valve Flow Transducer A Detector Assembly B Detector Assembly A Photometer Lamp Lamp Heater Optical Bench Pressure Transducer Assembly Figure 6-2. Component Layout Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 154: Lowering The Partition Panel

    1. Turn instrument OFF and unplug the power cord. 2. If the instrument is mounted in a rack, remove it from the rack. 3. Remove the cover. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 155: Fuse Replacement

    “Replacement Parts List” page 6-4) 1. Turn instrument OFF and unplug the power cord. 2. Remove fuse drawer, located on the AC power connector. 3. If either fuse is blown, replace both fuses. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 156: Pump Replacement

    Pump Mounting Screws (2) (Bottom) Figure 6-4. Replacing the Pump 3. Remove both lines from pump. 4. Loosen the four captive screws on the mounting plate and remove the pump. 6-10 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 157: Fan Replacement

    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 6-5. Replacing a Fan Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-11...

  • Page 158: Analog Output Testing

    The Output Set To line displays Full Scale. 7. Check that the meter is displaying the full scale value. If the meter reading differs by more than one percent, the analog outputs should be 6-12 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 159: Rear Panel Analog Input And Output Pins

    Figure 6-6. Rear Panel Analog Input and Output Pins Table 6-4. Analog Output Channels and Rear Panel Pin Connections Voltage Current Channel Channel Ground 16, 18, 19, 35, 37 Current Output Return 13, 16, 18, 20, 22, 24 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-13...

  • Page 160: Analog Input Channels And Rear Panel Pin Connections

    4. With the cursor at Calibrate Zero, press 6-14 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 161: Analog Input Calibration

    2. At the Analog Input Cal screen, press to scroll to a channel, and press 3. With the cursor at Calibrate Zero, press The screen displays the input voltage for the selected channel. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-15...

  • Page 162: Calibrating The Input Channels To Full Scale

    The screen displays the current input voltage for the selected channel. 5. Use to enter the source voltage, and press to calibrate the input voltage for the selected channel to the source voltage. 6-16 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 163: Optical Bench Temperature Calibration

    NIST traceable. 3. From the Main Menu, press to scroll to Service > press > to scroll to Temperature Calibration > and press The Calibrate Bench Temp screen appears. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-17...

  • Page 164: I/O Expansion Board (Optional) Replacement

    (Figure 6-8). 4. Pop off the board from the mounting studs and remove the board. 5. To install the I/O expansion board, follow previous steps in reverse. 6-18 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 165: Digital Output Board Replacement

    I/O Expansion Board Motherboard Digital Output Board Figure 6-8. Rear Panel Board Connectors Digital Output Board Use the following procedure to replace the digital output board Replacement (Figure 6-7). Equipment Required: Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-19...

  • Page 166: Motherboard Replacement

    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. 6-20 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 167: Measurement Interface Board Replacement

    1. Refer to “Removing the Measurement Bench and Lowering the Partition Panel” in this chapter to lower the partition panel, then proceed to the next step below. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-21...

  • Page 168: Front Panel Board Replacement

    7. Calibrate the pressure transducer, flow transducers, and bench temperature sensor as described earlier in this chapter. Front Panel Board Use the following procedure to replace the front panel board (Figure 6-10). Replacement Equipment Required: 6-22 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 169: Lcd Module Replacement

    Two-Wire Connector Bottom Support Figure 6-10. Replacing the Front Panel Board and the LCD Module LCD Module Use the following procedure to replace the LCD module (Figure 6-10). Replacement Equipment Required: Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-23...
  • Page 170 3. Remove the four screws at the corners of the LCD module. 4. Slide the LCD module out towards the right and rear of the instrument. 5. Replace the LCD module by following previous steps in reverse. 6-24 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 171: Optical Bench Replacement

    5. Perform the previous steps in reverse to install the new optical bench. 6. Calibrate the instrument. Refer to the “Calibration” chapter in this manual. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-25...

  • Page 172: Photometer Board Replacement

    Use the following procedure to replace the photometer board. 1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Remove the connection cables from the board. Note the locations to facilitate reconnection. 6-26 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 173: Photometer Lamp Replacement

    4. Slide the insulation off the end of the lamp. 5. Loosen Allen screw on lamp clamp. 6. Loosen two screws holding the clamp to the optical bench. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-27...

  • Page 174: Voltage Adjustment

    15 minutes) before beginning the following lamp voltage adjustment procedure. 1. From the Main Menu, press to scroll to Service > press > to scroll to Lamp Setting > and press The Bench Lamp Setting screen appears. 6-28 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 175: Sample/Reference Solenoid Replacement

    4. Loosen the four captive screws and lift out the solenoids and the solenoid plate. 5. Remove the solenoid retaining nuts from the underside of the solenoid plate and remove the faulty solenoid. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-29...

  • Page 176: Detector Replacement

    2. Disconnect the detector electrical connections (CHA and CHB) from the measurement interface board. 3. Loosen the two screws securing the detector clamping block to the optical bench and remove the clamping block and detectors (Figure 6-12). 6-30 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 177: Pressure Transducer Replacement

    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. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-31...

  • Page 178: Pressure Transducer Calibration

    Note An error in the zero setting of the pressure transducer does not introduce a measurable error in the output concentration reading. Therefore, if only a barometer is available and not a vacuum pump, only adjust the span setting. 6-32 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 179 6. Disconnect the pump from the pressure transducer. 7. Press to return to the Pressure Sensor Cal screen. 8. At the Pressure Sensor Cal screen, press to select Span. The Calibrate Pressure Span screen appears. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-33...

  • Page 180: Flow Transducer Replacement

    5. Install the new flow transducer by following the previous steps in reverse. 6. Calibrate the flow transducer. Refer to the “Flow Transducer Calibration” procedure that follows. 6-34 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 181: Flow Transducer Calibration

    Zero. The Calibrate Flow A Zero screen appears. 5. Wait at least 10 seconds for the zero reading to stabilize, then press to save the zero flow value. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-35...

  • Page 182: Ozonator Lamp Replacement

    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. 6-36 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 183: Ozonator Lamp Heater Replacement

    9. Re-connect the ozonator LAMP connector to the ozonator board. 10. Replace the cover and reconnect power. Ozonator Lamp Heater Use the following procedure to replace the ozonator lamp heater. Replacement Equipment Required: Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-37...
  • Page 184 7. Coat new lamp heater block with thin film of heat conductive compound. 8. Install new ozonator lamp heater block by following the above procedure in reverse. 9. Re-install the instrument cover. 6-38 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 185: Ozonator Replacement

    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. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 6-39...

  • Page 186: Service Locations

    5. To install the new ozonator board, follow previous steps in reverse. 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 6-40...

  • Page 187: System Description

    • “I/O Components” page 7-8 describes the input and output communication functions and components. Hardware The Model 49i Primary Standard components include: • Optical bench with photometer lamp • Detector system • Flow transducers •...

  • Page 188: Optical Bench With Photometer Lamp

    Flow transducers monitor the flow of the sample and reference gases and transmit the data to the measurement interface board. Pressure Transducer The pressure transducer measures the pressure of the sample gas. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 189: Ozonator Assembly

    A and reference gas through Cell B, or vise versa, depending upon which Solenoid Valves cycle the instrument is performing. Software The processor software tasks are organized into four areas: • Instrument Control • Monitoring Signals • Measurement Calculations • Output Communication Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 190: Instrument Control

    30 logarithms which are averaged by the instrument’s averaging time function. The background values for O are corrected for temperature, pressure, and span and are subtracted from the ozone calculated to yield a corrected value. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 191: Output Communication

    Connectors located on the motherboard include: External Connectors External connectors include: • External Accessory • RS-232/485 Communications (two connectors) • Ethernet Communications Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 192: Measurement Interface Board

    120VAC outputs for the pump • Flow and pressure sensors inputs • Detector board inputs - CH A and CH B • Optical bench temperature thermistor • Photometer lamp power supply Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 193: Digital Output Board

    (Optional) currents via a connector located on the rear panel of the instrument. It contains local power supplies, a DC/DC isolator supply, a sub-processor Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 194: Front Panel Connector Board

    • 0-1V • 0-5V • 0-10V The user can calibrate each analog output zero and span point through firmware. At least 5% of full-scale over and under range are also supported. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 195: Analog Current Outputs (Optional)

    Digital Inputs Sixteen digital inputs are available which may be programmed to signal instrument modes and special conditions including: • Zero Gas Mode Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 196: Serial Ports

    • Modbus Slave • Geysitech (Bayern-Hessen) The Streaming Data protocol transmits user-selected measurement data via the serial port in real-time for capture by a serial printer, data logger, or PC. 7-10 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 197: Rs-232 Connection

    (SD). Refer to Table 7-2 for the DB9 connector pin configuration. Table 7-2. RS-485 DB Connector Pin Configuration DB9 Pin Function + receive - receive + transmit - transmit ground Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 7-11...

  • Page 198: Ethernet Connection

    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 49i Primary Standard. 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 199: Chapter 8 Optional Equipment

    A 5-10 micron pore size, two-inch diameter Teflon® element is available for Filter the Model 49i Primary Standard. This filter should be installed just prior to the SAMPLE bulkhead. When using a filter, all calibrations and span checks must be performed through the filter.

  • Page 200: Cable Options

    1-37 are for 37-pin cables. Table 8-1. Cable Options Description Cable Length DB37M to open end Six feet DB37F to open end Six feet DB25M to open end Six feet RS-232 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 201: Mounting Options

    The analyzer can be installed in the configurations described in Table 8-3 and shown in Figure 8-1 through Figure 8-4. Table 8-3. Mounting Options Mounting Type Description Bench Positioned on bench, includes mounting feet, and front panel side-trim ears. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 202: Rack Mount Option Assembly

    Mounted in an EIA-style rack, includes mounting slides, and front panel EIA-rack mounting ears. Retrofit rack Mounted in a Thermo non-EIA rack, includes mounting slides, and retrofit front panel rack-mounting ears. Figure 8-1. Rack Mount Option Assembly Model 49i Primary Standard Instruction Manual...
  • Page 206 Optional Equipment Mounting Options Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 207 (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 they were not designed, (v) causes external to the Products such as, but not Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 208 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 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 209 Appendix B This appendix provides a description of the C-Link protocol commands that can be used to remotely control a Model 49i Primary Standard 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 210: Instrument Identification Number

    (ASCII) character. The command in the example that follows begins with the ASCII character code 170 decimal, which directs the command to the Model 49i, and is terminated by a carriage return “CR” (ASCII character code 13 decimal). <ASCII 170> T I M E <CR>...

  • Page 211: C-Link Protocol Commands

    If changes are not saved, they will be lost in the event of a power failure. Table B-1 lists the 49i Primary Standard C-Link protocol commands. The interface will respond to the command strings outlined below. Table B-1. C-Link Protocol Commands...
  • Page 212 Sets/auto-calibrates O coefficient B-25 cell a int Reports the current lamp intensity for cell a B-17 cell b int Reports the current lamp intensity for cell b B-17 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 213 Reports current measured flow in cell a B-10 flow b Reports current measured flow in cell b B-10 format Reports/sets current reply termination format B-38 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 214 Lists current selection streaming data output B-18 list var aout Reports list of analog output, index numbers, and variables B-43 list var din Reports list of digital input, index numbers, and variables B-43 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 215 Reports analyzer program number B-39 pump Sets the pump on or off B-33 push Simulates pressing a key on the front panel B-28 range Reports/sets current 0 range B-29 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 216: Measurements

    The example that follows shows that the averaging time is 300 seconds, according to Table B-2. Send: avg time Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 217 The example that follows shows that temperature compensation is on and that the bench temperature is 32.3 ° Send: bench temp Receive: bench temp 032.3 deg C, actual 032.3 high o3 low o3 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 218 75.5 ok lamp setting This reports the current photometer lamp setting. The example that follows reports that the lamp setting is 72.9% Send: lamp setting Receive: lamp setting 72.9% lamp temp B-10 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 219 OFF, the gas mode status is Sample, gas units are ppb, and intensity B is in high alarm. Send: flags Receive: flags 00028000 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-11...

  • Page 220: Alarms

    C. The example that follows sets the alarm bench lamp temperature maximum value to 58 ° B-12 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 221 The example that follows sets the O concentration alarm maximum value to 150. Send: set alarm conc o3 max Receive: set alarm conc o3 max 150 ok Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-13...
  • Page 222 These commands set the offset value (in ppb) from the concentration stored at ozonator level 1-5 as the alarm trigger point for that level. The example that follows sets the alarm level 1 offset to 20.5. B-14 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 223 The example that follows sets the pressure alarm maximum value to 1000 mmHg. Send: set alarm pressure max 1000 Receive: set alarm pressure max 1000 ok Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-15...
  • Page 224 Send: set alarm trig conc no 1 Receive: set alarm trig conc no 1 ok Table B-3. Alarm Trigger Values Value Alarm Trigger Floor Ceiling B-16 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 225: Diagnostics

    These commands will clear only the long records or only the short records that have been saved. The example that follows clears short records. Send: set clr srecs Receive: set clr srecs ok Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-17...
  • Page 226 = | 0 | 1 | : Reply termination format (see “set format format” command) y = | 0 | 1 | 2 | : Output format (see “set erec/lrec/srec format format” command) B-18 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 227 These commands output long or short records. The output format is determined by the “set lrec format”, and “set srec format” commands. The logging time is determined by the “set lrec per” and “set srec per” commands. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-19...
  • Page 228 ASCII without text, ASCII with text, or binary. The example that follows shows the output format for long records is ASCII with text, according to Table B-4. Send: lrec format Receive: lrec format 1 B-20 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 229 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 Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-21...
  • Page 230 These commands set the percent of memory space allocated for long and short records to value, where value is a floating-point number representing percent. The example that follows sets the memory allocation for long records to 10. B-22 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 231 Available variables and their corresponding index numbers may be obtained using the command “list var aout”. The “set sp field” Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-23...
  • Page 232 0 Receive: set stream time 0 ok Table B-5. Stream Time Values Value Stream Time Attaches time stamp to streaming data string Disables time stamp to streaming data string B-24 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 233: Calibration

    1.005 Receive: set o3 coef 1.005 ok resp coef This command reports the current O response coefficient. The example that follows reports that the O response coefficient is 1.000. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-25...
  • Page 234 The example that follows sets the O span gas concentration to 123.4 ppm. Send: set o3 gas 123.4 Receive: set o3 gas 123.4 ok B-26 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 235 The example below sets the span concentration to 1000 ppb in the single range mode. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-27...

  • Page 236: Keys/Display

    320 by 240 characters. The data is sent in RLE encoded form to save time in transmission. It is sent as a type '5' binary c_link response with no checksum. B-28 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 237: Measurement Configuration

    This command is meant for backward compatibility on the C series. Screen information is reported using the “iScreen” command above. Send: screen Receive: screen This is an I series Instrument. Screen Information not available Measurement range Configuration high range low range Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-29...

  • Page 238: Range Settings

    2,000 ppb. Send: set range o3 5 Receive: set range o3 5 ok Table B-6. Range Settings Code mg/m 0.05 custom range range = | 1 | 2 | 3 | B-30 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 239 This command reports the current mode of sample, zero, or span. The example that follows reports that the gas mode is sample. Send: gas mode Receive: gas mode sample set sample set zero set span Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-31...
  • Page 240 Send: set pres comp off Receive: set pres comp off ok set pump onoff This command turns the pump on or off. The example that follows turns the pump off. B-32 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 241 This command sets the instrument to level d, where d represents custom levels 1, 2, 3, 4 or 5. The example that follows sets the custom level 1. Send: set level 1 Receive: set level 1 ok Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-33...

  • Page 242: Hardware Configuration

    = month dd = day yy = year This command sets the date of the analyzer’s internal clock. The example that follows sets the date to March 19, 2005. B-34 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 243 This command reports the current time (24-hour time). The example that follows reports that the internal time is 2:15:30 pm. Send: time Receive: time 14:15:30 set time hh:mm:ss hh = hours mm = minutes ss = seconds Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-35...

  • Page 244: 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-36 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 245 This command reports the current state of use of DHCP on or off. DHCP is used to assign an IP address to the analyzer automatically. The example that follows shows that DHCP is on. Send: dhcp Receive: dhcp on set dhcp onoff Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-37...

  • Page 246: Reply Termination Formats

    This command reports the host name string. Send: host name Receive: host name ISERIES set host name string This command sets the host name string, where string is 1-13 alphanumeric characters. Send: set host name analyzer01 B-38 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 247 Send: set mode local Receive: set mode local ok program no This command reports the analyzer’s model information and program version number, which will be dependant on the current version. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-39...

  • Page 248: Analog Current Output Range Values

    “calculated” value of channel 1 is 75.325 degrees F, volts are 2.796. This command responds with “feature not enabled” if the I/O expansion board is not detected. Send: analog vin 1 Receive: analog vin 1 75.325 2.796 B-40 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 249: Analog Voltage Output Range Values

    (1-35), when the input transitions to the designated state (high or low). Use “list din var” command to obtain the list of supported index values and corresponding actions. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-41...
  • Page 250 Table B-11. Default Output Assignment D to A Function Voltage Output Voltage Output Voltage Output Voltage Output Voltage Output Voltage Output Current Output B-42 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 251 “closed,” if all the relays are set to same state, that is all open or all closed. The example that follows 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 49i Primary Standard Instruction Manual B-43...
  • Page 252 (e.g., 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-44 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 253: Format Specifier For Ascii Responses

    Each line is composed of three major components: (1) a text field, (2) a value field, and (3) a button. None of these three components is required. The text field contains statically displayed text. Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-45...
  • Page 254 All alarm information is presumed to be two bits long (low and high). The bitfield extraction is performed on the integer part of the source. Typical alarm information would appear as '@6.4'. B-46 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 255 This is not currently used. Examples Some examples ('\n' is the C syntax for an end-of-line character): Concentrations\n Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual B-47...
  • Page 256 The 'T' button indicates full translation, input code to string, and user selection number to output string. B-48 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 257 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 49i Primary Standard Instruction Manual B-49...
  • Page 258 C-Link Protocol Commands Record Layout Definition B-50 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 259: Serial Communication Parameters

    This is achieved by using the supported MODBUS commands listed below. For details of the Model 49i Primary Standard MODBUS Protocol specification, see the following topics: •...

  • Page 260: Slave Address

    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 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 261: 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 49i Primary Standard Instruction Manual...
  • Page 262 Here is an example of a request and response to read outputs 2–15: Request Field Name (Hex) Function 0x01 Starting Address Hi 0x00 Starting Address Lo 0x02 Quantity of Outputs Hi 0x00 Quantity of Outputs Lo 0x0D Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 263 Request Function code 1 Byte 0x03 or 0x04 Starting Address 2 Bytes 0x0000 to maximum allowed by instrument Quantity of Registers 2 Bytes 1 to maximum allowed by instrument Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 264 Register value Lo (13) 0x64 The contents of register 10 are shown as the two byte values of 0x02 0x2B. The contents of registers 11–13 are 0x00 0x00, 0x00 0x64 and 0x00 0x64, respectively. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 265 03=Illegal Data, 04=Slave Device Failure Here is an example of a request to write Coil 5 ON: Request Field Name (Hex) Function Output Address Hi Output Address Lo Output Value Hi Output Value Lo Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...

  • Page 266: Modbus Commands Supported

    Output Value Hi Output Value Lo MODBUS Commands Table C-1 through table C-3 list the MODBUS commands supported for Supported the Model 49i Primary Standard. Table C-1. Read Coils for 49i Primary Standard Coil Number Status NOT USED SERVICE GAS UNITS...
  • Page 267 MODBUS Protocol MODBUS Commands Supported Table C-1. Read Coils for 49i Primary Standard, continued Coil Number Status INTENSITY B ALARM CONC ALARM NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED MOTHERBOARD STATUS ALARM MEASUREMENT INTERFACE BD STATUS ALARM I/O EXP BD STATUS ALARM Table C-2.
  • Page 268 MODBUS Protocol MODBUS Commands Supported Table C-2. Read Registers for 49i Primary Standard, continued Register Number Variable 40035&40036 ANALOG IN 4 40037&40038 ANALOG IN 5 40039&40040 ANALOG IN 6 40041&40042 ANALOG IN 7 40043&40044 ANALOG IN 8 40045&40046 O3 OUT CONC Table C-3.

  • Page 269: Serial Communication Parameters

    This is achieved by using the supported Geysitech commands listed below. For details of the Model 49i Primary Standard Geysitech Protocol specification, see the following topics: “Serial Communication Parameters”...

  • Page 270: Tcp Communication Parameters

    The following is the basic structure of a Geysitech command: Structure <STX>Command text<ETX><BCC> <STX>Command text<CR> Each Command is framed by control characters, <STX> at the start and terminated with either <ETX> or <CR>. Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...

  • Page 271: Block Checksum

    Command ‘N’ switches the instrument gas mode to Zero. For the 49i PS, command ‘K’ switches the instrument gas mode to Level 1. For the 49i, command ‘K’ is not used unless the Sample/Cal option is present. When the Sample/Cal option is present: •...

  • Page 272: Data Sampling/Data Query Command (Da)

    If the the ozonator is not present, command ‘K’ switches the instrument gas mode to Span. Command ‘M’ switches the instrument gas mode to Sample for the 49i and Manual for the 49i PS. The following are the different acceptable formats of the ST command: <STX>ST<address><control command><ETX><BCC>...
  • Page 273 The 02 after the MD indicates, that two measurements are present in the reply string, (a 03 for three measurements and so on, this will also determine the length of the reply string). Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual...
  • Page 274 0’s i.e. <0000000000>. Example: Geysitech Protocol with transmission of three concentrations (Instrument ID is 1, Operation Status is 03, Error Status is 04): Data Query String: <STX>DA<CR> Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific...
  • Page 275 Model 49i and 49i Primary Standard. in Response to DA Command for 49i and 49i Single Range Mode for 49i and The 1 measurement reported in single range mode for the Model 49i and 49i PS 49i Primary Standard includes: •...

  • Page 276: Operating And Error Status

    Table D-1 for operating status and Table D-2 for error status for the Model 49i and the Model 49i Primary Standard. Table D-1. Operating Status for Model 49i and 49i Primary Standard Hex-value Operating status: Service Mode (On) Maintenance (Local)

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