Page 1 Model 146i Instruction Manual Dynamic Gas Calibrator Part Number 102482-00 30Jan2008...
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 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 • Chapter 9 “Optional Equipment” describes the optional equipment that can be used with this analyzer. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 6 The service procedures in this manual are restricted to qualified service personnel only. The Model 146i is supplied with a three-wire grounding cord. Under no circumstances should this grounding system be defeated. Model 146i Instruction Manual...
Page 7 Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 8 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 1-508-520-0430 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 9: Table Of Contents
Operation ................... 3-1 Flow Modes ..................3-1 Standby.................... 3-1 Gas Dilution ..................3-1 Permeation Oven ................3-1 ....................3-1 Photometer ..................3-1 Gas Setup Menu ................. 3-1 Gas Name ..................3-1 Gas Solenoid ..................3-1 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 10 Analog Input Readings..............3-2 Analog Input Voltages..............3-2 Digital Inputs................... 3-2 Relay States ..................3-2 Solenoid States ................. 3-2 Test Analog Outputs................ 3-3 Instrument Configuration ..............3-3 Contact Information ................ 3-3 Alarms Menu ..................3-3 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 11 Safety Precautions ................5-1 Replacement Parts................5-1 Accessing the Service Mode..............5-1 Outside Case Cleaning................ 5-1 Fan Filter Inspection and Cleaning ............. 5-1 Photometer Cleaning ................5-1 Monitoring Detector Frequency and Noise......... 5-1 Capillary Service.................. 5-1 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 12 Photometer Lamp Voltage Adjustment (Photometer option) ....7-2 Photometer Lamp Heater Replacement..........7-2 Photometer Replacement (Photometer option) ........7-2 Photometer Board Replacement (Photometer option)......7-2 Detector Replacement (Photometer option)........7-2 Photometer Thermistor Replacement..........7-2 viii Model 146i Instruction Manual Thermo Fisher Scientific...
Page 13 External/Internal Solenoid ............... 8-1 Span Gas Solenoids ................8-1 Photometer Capillary ............... 8-1 Ozonator Capillary................8-1 Pressure Gauge Capillary..............8-2 Pump Capillary ................8-2 Mixing Chamber................8-2 Manifold ..................8-2 Mass Flow Controllers ..............8-2 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 14 Span Gas Mass Flow Controller ............9-1 Zero Gas Mass Flow Controller ............9-1 I/O Expansion Board Assembly............9-1 25-Pin Terminal Board Assembly............. 9-1 Terminal Block and Cable Kits ............9-1 Cables ....................9-1 Mounting Options................9-1 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 15 Format Specifier for Front-Panel Layout ..........B-1 Appendix C MODBUS Protocol ....................C-1 Serial Communication Parameters ............. C-1 TCP Communication Parameters ............C-1 Application Data Unit Definition ............C-1 Function Codes.................. C-1 MODBUS Commands Supported ............. C-1 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 16 Contents Model 146i Instruction Manual Thermo Fisher Scientific...
Page 17 Figure 2–3. Removing the Glass Chamber Assembly ........2-2 Figure 2–4. Replacing the Glass Chamber Assembly ........2-2 Figure 2–5. Model 146i Rear Panel..............2-2 Figure 2–6. I/O Terminal Board Views ............... 2-2 Figure 2–7. D/O Terminal Board Views.............. 2-2 Figure 2–8.
Page 18 Figure 9–3. Cal Gas Therm Resistor Screen ............9-2 Figure 9–4. Rack Mount Option Assembly ............9-2 Figure 9–5. Bench Mounting................9-2 Figure 9–6. EIA Rack Mounting ................9-2 Figure 9–7. Retrofit Rack Mounting..............9-2 Figure B–1. Flags ....................B-2 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 19 Tables Tables Table 1–1. Model 146i Specifications ............... 1-1 Table 2–1. I/O Terminal Board Pin Descriptions ..........2-2 Table 2–2. D/O Terminal Board Pin Descriptions..........2-2 Table 2–3. 25-Pin Terminal Board Pin Descriptions........... 2-2 Table 3–1. Front Panel Pushbuttons..............3-4 Table 3–2.
Page 20 Table B–11. Analog Current Output Range Values..........B-2 Table B–12. Analog Voltage Output Range Values ...........B-2 Table B–13. Default Output Assignment............B-2 Table C–1. Read Coils for 146i ................C-1 Table C–2. Read Registers for 146i..............C-2 Table C–3. Write Coils for 146i ................C-2...
Page 21: Chapter 1 Introduction
The diluted gases are used to perform zero, precision and Level 1 span checks, audits, and multipoint calibration of analyzers. The design of the Model 146i meets or exceeds all published U.S. Environmental Protection Agency requirements for multipoint calibration, audit, Level 1 span and precision checks.
Page 22: Gas Phase Titration
146i output flow, so the oven may be kept at a stable temperature. To accomplish this, a flow of zero air set by a capillary at approximately 150 cc per minute is continuously fed through the permeation tube oven.
Page 23: Photometer
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 146i through the zero air bulkhead and is split into two gas streams, as shown in Figure 1–5.
Page 24: Figure 1-1. Standard Gas Dilution System
Introduction Principle of Operation Figure 1–1. Standard Gas Dilution System Figure 1–2. Standard Gas Dilution System with Ozonator Option Model 146i Instruction Manual Thermo Fisher Scientific...
Page 25: Figure 1-4. Standard Gas Dilution With Ozonator And Permeation Tube Oven Options
Introduction Principle of Operation Figure 1–3. Standard Gas Dilution System with Permeation Tube Oven Option Figure 1–4. Standard Gas Dilution with Ozonator and Permeation Tube Oven Options Thermo Fisher Scientific Model 146i Instruction Manual...
Page 26: Figure 1-6. Standard Gas Dilution System With Ozonator, Permeation Tube Oven, And Photometer Options
Introduction Principle of Operation Figure 1–5. Standard Gas Dilution System with Photometer Option Figure 1–6. Standard Gas Dilution System with Ozonator, Permeation Tube Oven, and Photometer Options Model 146i Instruction Manual Thermo Fisher Scientific...
Page 27: Specifications
Introduction Specifications Specifications Table 1–1 lists the specifications for the Model 146i. Table 1–1. Model 146i Specifications Gas Dilution Accuracy of each Mass Flow Measurement ± 2% of reading or 1% of full-scale, whichever is less (20 to 100% full-scale) Linearity of Mass Flow Measurement 0.5% of full-scale...
Page 28 Transfer Standard Remote Operation External Solenoid outputs Up to (8) 24 VDC external solenoids can be controlled by Model 146i Analog outputs 6 voltage outputs; 0–100 mV, 1, 5, 10 V (User selectable), 5% of full-scale over/under range, 12 bit resolution, user selectable for measurement input.
Page 29: Chapter 2 Installation
Equipment Damage Do not attempt to lift the instrument by the cover or other external fittings. Unpacking and The Model 146i is shipped complete in one container. If there is obvious Inspection damage to the shipping container when you receive the instrument, notify the carrier immediately and hold for inspection.
Page 30: Figure 2-1. Remove The Packing Material
Units without Optional I/O Board Figure 2-1. Remove the Packing Material 4. If the photometer option is installed (includes pump), remove the three shipping screws (Figure 2-2). Shipping Screws (3) Figure 2-2. Remove the Shipping Screws Model 146i Instruction Manual Thermo Fisher Scientific...
Page 31 Release the latches on the sides of the oven cover and remove cover. c. Remove glass chamber assembly (Figure 2-3) by loosening (not removing) knurled screw, located at the top of the chamber, and gently pulling assembly upward. Completely remove assembly from oven. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 32: Figure 2-3. Removing The Glass Chamber Assembly
Attach glass chamber to top assembly by gently pushing together with a slight twisting motion (Figure 2-3). g. Replace glass chamber assembly into oven until top of assembly is flush or slightly below oven top (Figure 2-4). Model 146i Instruction Manual Thermo Fisher Scientific...
Page 33: Figure 2-4. Replacing The Glass Chamber Assembly
“External Device Connection Components” page 7-7 “Terminal Block and Cable Kits” page 9-11 “Instrument Controls Menu” in the Operation chapter For detailed information about troubleshooting a connection, refer to “Analog Output Testing” page 7-19. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 34: Remote Interconnections
The Model 146i is controllable through the 37-pin male rear-panel connector. Refer to the following tables when selecting the appropriate gas, gas span level, and ozonator or permeation oven level for the Model 146i. Note These are the default settings that can be changed by the operator. A 1 indicates contact closure to ground and 0 indicates no contact, assuming the digital input channel is set to Normally Open.
Page 35 Oz/Perm Bit 3 Oz/Perm 2 Oz/Perm Bit 1 Ozonator or Permeation Pin 9 Pin 27 Pin 8 Pin 7 Oven Levell Ozon/Perm Off Ozon Manual Ozon 1 Ozon 2 Ozon 3 Ozon 4 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 36: Outputs
The Model 146i is controllable through the 37-pin female rear-panel connector. The output relays report the status of the 146i. They default to Normally Open (meaning that the relays are closed when the condition exists) and can be user-configured as NO or NC. Refer to the following tables for the indicated gas, gas span level, and ozonator or permeation oven level for the Model 146i.
Page 37 Pins10,29 Pins 9,28 Pins 8,27 Pins 7,26 Oven Levell Ozon/Perm Off Ozon Manual Ozon 1 Ozon 2 Ozon 3 Ozon 4 Ozon 5 Perm 1 Perm 2 Perm 3 Perm 4 Perm 5 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 38: Connecting External Devices
Assemblies • I/O terminal board PCB assembly, 37 pin (standard) • D/O terminal board PCB assembly, 37 pin (standard) • 25-pin terminal board PCB assembly (included with optional I/O Expansion Board) 2-10 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 39: Figure 2-6. I/O Terminal Board Views
Analog1 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 Thermo Fisher Scientific Model 146i Instruction Manual 2-11...
Page 40: Figure 2-7. 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 Solenoid_Drive_Output1 Relay5_ContactB +24V Relay6_ContactA Solenoid_Drive_Output2 Relay6_ContactB +24V 2-12 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 41: Figure 2-8. 25-Pin Terminal Board Views
Table 2-3. 25-Pin Terminal Board Pin Descriptions Signal Description Signal Description IOut1 Analog_In1 GND_ISO Analog_In2 IOut2 Analog_In3 GND_ISO GNDD IOut3 Analog_In4 GND_ISO Analog_In5 IOut4 Analog_In6 GND_ISO GNDD IOut5 Analog_In7 GND_ISO Analog_In8 IOut6 GNDD Thermo Fisher Scientific Model 146i Instruction Manual 2-13...
Page 42: Startup
2. Allow 90 minutes for the instrument to stabilize. 3. Set instrument parameters such as gas setup and flow modes to appropriate settings. For more information about instrument parameters, see the “Operation” chapter. 2-14 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 43: Chapter 3 Operation
Chapter 3 Operation The Model 146i can produce accurate gas concentrations by diluting gas from a gas cylinder or a permeation tube, ozone transfer standard, ozone calibration, and Gas Phase Titration (GPT). This chapter provides step-by- step procedures to produce each type of concentration gas, and describes the following front panel display, front panel pushbuttons, and menu- driven software.
Page 44: Figure 3-1. Front Panel Display
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 146i Instruction Manual Thermo Fisher Scientific...
Page 45: Pushbuttons
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 146i Instruction Manual...
Page 46: Software Overview
SAVE OPER MODE DIAGS ALARM Software The Model 146i utilizes the menu-driven software as illustrated by the flowchart in Figure 3–3. The Power-Up screen, shown at the top of the Overview flowchart, is displayed while the instrument is warming up and performing self-checks.
Page 47: Figure 3-3. Flowchart Of Menu-Driven Software
Operation Software Overview Figure 3–3. Flowchart of Menu-Driven Software Thermo Fisher Scientific Model 146i Instruction Manual...
Page 48: Power-Up Screen
Operation Software Overview Power-Up Screen The Power-Up screen is displayed on power up of the Model 146i. The Self-Test is displayed while the internal components are warming up and diagnostic checks are performed. Please wait while booting... Run Screen The Run screen is the normal operating screen when the menu is not displayed.
Page 49: Main Menu
Main Menu or to return ● to the Run screen. MAIN MENU: >OPERATION FLOW MODES GAS SETUP OZONATOR SETUP PERMEATION OVEN SETUP PHOTOMETER SETUP PROGRAM OPER MODE DIAGS ALARM INSTRUMENT CONTROLS DIAGNOSTICS ALARMS SERVICE PASSWORD Thermo Fisher Scientific Model 146i Instruction Manual...
Page 50: Operation
The first line of the operation screen allows selection of the dilution gas. The Model 146i can support up to three external gases (standard GAS A through C) or up to six external gases (optional GAS A through F). The displayed gas names may be changed by the user via the GAS SETUP menu.
Page 51: Flow Modes
In the Main Menu, choose Flow Modes (or press the MODE soft ● key) Thermo Fisher Scientific Model 146i Instruction Manual...
Page 52: Standby
In the Main Menu, choose > Flow Modes > Gas Dilution. ● GAS SELECTION: >GAS A GAS A GAS B GAS B GAS C GAS C GAS D GAS D GAS E GAS E GAS F GAS F OPER MODE DIAGS ALARM 3-10 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 53 In the Main Menu, choose Flow Modes > Gas Dilution > Gas A-F > ● Manual. MANUAL SELECTION: >ZERO AIR 10000 SCCM 100.00 SCCM OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-11...
Page 54: Permeation Oven
The Permeation Oven flow mode menu is used to select the permeation oven output level (if the permeation oven option is installed). Once selected the screen reports the new flow mode. The user must press 3-12 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 55 The Gas Span Select screen is used to select the span level for the previously selected gas. Gas D, E, and F are available if the six gas option is installed. Span Select Thermo Fisher Scientific Model 146i Instruction Manual 3-13...
Page 56 LOW” or “TOO HIGH” appears on the screen. In the Main Menu, choose Flow Modes > Permeation Oven > Gax Mix ● > Gas A-F > Manual. MANUAL SELECTION: >ZERO AIR 10000 SCCM 100.00 SCCM OPER MODE DIAGS ALARM 3-14 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 57 (if the ozonator option is installed). Selecting OFF reports the new flow mode. The user must press to accept and activate these settings. The message “SAVING” is displayed for 3 seconds, then removed. Thermo Fisher Scientific Model 146i Instruction Manual 3-15...
Page 58 In the Main Menu, choose Flow Modes > O3 > Transfer Standard > ● Level 1-5. O3 LEVEL SELECTION: >LEVEL1 20.0 % LEVEL2 25.0 % LEVEL3 40.0 % LEVEL4 60.0 % LEVEL5 80.0 % MANUAL 2.0 % OPER MODE DIAGS ALARM 3-16 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 59 LEVEL3 50.0 % LEVEL3 0.500 PPM LEVEL4 20.0 % LEVEL4 0.200 PPM LEVEL5 10.0 % LEVEL5 0.100 PPM MANUAL 0.000 % MANUAL 0.000 PPM OPER MODE DIAGS ALARM OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-17...
Page 60 “SAVING” is displayed for 3 seconds, then removed. In the Main Menu, choose Flow Modes > O3 > GPT/Photometer ● Control > Level 1-5 > Gas A-F > Zero or Span 1-5. 3-18 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 61 The screen identifies the minimum and maximum acceptable zero-air flow rates and lets the user select a flow rate between these two settings. If the selected zero-air flow is lower or higher Thermo Fisher Scientific Model 146i Instruction Manual 3-19...
Page 62: Photometer
MODE”. Once a choice is selected the screen reports that the new mode has been accepted and activated. The message “SAVING” is displayed for 3 seconds, then removed. In the Main Menu, choose Flow Modes > Photometer. ● 3-20 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 63: Gas Setup Menu
The Gas Name screen is used to identify each gas. As initially delivered, the instrument lists the gas standards using the letters A, B, C (and D, E, F if the six gas option is installed). These characters can be changed to represent Thermo Fisher Scientific Model 146i Instruction Manual 3-21...
Page 64: Gas Solenoid
Name screen as SO , and the Tank Concentration screen retains the identification). Note Changing this valve may affect allowable limits for span concentration and total flow. It is advisable to check these settings. ▲ 3-22 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 65: Span 1-5
The span concentration and/or total flow rate can be selected using this menu to change these settings. In the Main Menu, choose Gas Setup > Gas A-F > Span 1-5. ● Thermo Fisher Scientific Model 146i Instruction Manual 3-23...
Page 66 “TOO LOW” or TOO HIGH” appears on the screen. In the Main Menu, choose Gas Setup > Gas A-F > Span 1-5 > Flow. ● 3-24 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 67: Manual Flow
In the Main Menu, choose Gas Setup > Gas A-F > Manual > Zero Air. ● MAN GAS A ZERO AIR FLOW: MINIMUM: 00400 SCCM MAXIMUM: 10000 SCCM SET TO: 01001 SCCM ? MOVE CURSOR CHANGE VALUE SAVE OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-25...
Page 68: Ozonator Setup Menu
OPER MODE DIAGS ALARM Ozonator Setup The Model 146i can be equipped with an optional internal ozonator. The production of ozone is regulated by either changing the flow of zero-air or Menu by changing the intensity of the ozone-producing lamp.
Page 69: Zero Air
The Ozonator Manual Level screen is used when certifying the ozone generator as a transfer standard. In the Main Menu, choose Ozonator Setup > Manual. ● MANUAL O3 LAMP SETTING: LAMP SETTING: 0.0% INC/DEC SAVE VALUE OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-27...
Page 70: Permeation Oven Setup Menu
Operation Permeation Oven Setup Menu Permeation Oven The Model 146i can be equipped with an optional permeation oven. The permeation oven supplies an internal source of calibration gas. A small Setup Menu amount of zero-air flows through the permeation tube and is mixed with the remainder of the zero-air flow in the mixing chamber.
Page 71 In the Main Menu, choose Permeation Oven Setup > Level 1-5. ● PERMEATION CONC LEVEL 1 MIN: 0.100 PPM MAX: 5.000 PPM SET TO: 000001.200 PPM ? MOVE CURSOR CHANGE VALUE SAVE OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-29...
Page 72: Photometer Setup Menu
Operation Photometer Setup Menu Photometer Setup The Model 146i can be equipped with an optional internal photometer, which is used to measure concentration of ozone. Menu The Photometer Setup menu sets up the photometer. In the Main Menu, choose Photometer Setup.
Page 73: Range
Figure 3–4. Pin-Out of Rear Connector Table 3–2. Default Analog Outputs Channel Description Gas Conc Analog Output Gas Conc Analog Output None None None None Ground 16, 18, 19, 35, 37 Signal Ground Thermo Fisher Scientific Model 146i Instruction Manual 3-31...
Page 74: Averaging Time
The Averaging Time defines a time period (60 to 300 seconds) during which O measurement is taken. The average concentration of the reading is calculated for that time period. The front panel display and analog 3-32 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 75: Calibration Factors
Before performing a background adjustment, allow the analyzer to sample zero air until stable readings are obtained. In the Main Menu, choose Photometer Setup > Calibration Factors > ● O3 Bkg. Thermo Fisher Scientific Model 146i Instruction Manual 3-33...
Page 76 The Reset User Calibration Default screen allows the user to reset the calibration configuration values to factory defaults. Default In the Main Menu, choose Photometer Setup > Calibration Factors > ● Reset User Cal Defaults. 3-34 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 77: Calibration
300-second averaging time. In the Main Menu, choose Photometer Setup > Calibration > Cal ● Zero. O3 BACKGROUND: 0.0000 CURRENTLY: 0.0000 SET O3 TO ZERO OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-35...
Page 78: Program Menu
DIAGS ALARM Program Menu The Program menu sets the Model 146i’s internal computer program to conduct a series of calibration events at preset times and durations. Up to 32 calibration events can be programmed. Next Event is read only and shows the status of the next event number and time, there is no setting screen.
Page 79: Program Cycle
In the Main Menu, choose > Program > Period Hours. ● PROGRAM CYCLE PERIOD: CURRENTLY: 024 HRS SET TO: 120 HRS? MOVE CURSOR CHANGE VALUE SAVE OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-37...
Page 80: Next Cycle
In the Main Menu, choose > Program > Events. ● PROGRAM CYCLE EVENTS: TOT EVENTS 2 TIME 0:06 >EVENT 1 GA2 03 P1 I EVENT 2 GC4 03 EVENT 3 EVENT 4 EVENT 5 EVENT 6 OPER MODE DIAGS ALARM 3-38 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 81: Instrument Controls Menu
The Instrument Controls menu contains a number of items. The software controls listed in this menu enable control of the listed instrument Menu functions. In the Main Menu, choose Instrument Controls. ● Thermo Fisher Scientific Model 146i Instruction Manual 3-39...
Page 82: Temperature Compensation
When pressure compensation is off, the first line of the display shows the factory standard pressure of 760 mmHg. In the Main Menu, choose Instrument Controls > Pressure ● Compensation. 3-40 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 83: Datalogging Settings
OPER MODE DIAGS ALARM View Logged Data The View Logged Data screen is used to select the start point to view the logged data by number of records or date and time. Thermo Fisher Scientific Model 146i Instruction Manual 3-41...
Page 84 For example, if “20 JUN 2005 10:00” is entered, then the first logged data record that is displayed is the first record after this time. If set to one minute logging, this would be at “20 JUN 2005 10:01”. 3-42 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 85 I/O expansion board is installed). This is a temporary list of items for the selected record type that must be committed via the datalogging menu before the changes will apply. Note that committing any changes to this list Thermo Fisher Scientific Model 146i Instruction Manual 3-43...
Page 86 In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Select Content > Select Field > Concentrations. CONCENTRATIONS: >NONE GAS CONC <-- O3 CONC PERM CONC OPER MODE DIAGS ALARM 3-44 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 87 > Select Content > Select Field > Analog Inputs. ANALOG INPUTS: >NONE ANALOG IN 1 ANALOG IN 2 ANALOG IN 3 ANALOG IN 4 ANALOG IN 5 ANALOG IN 6 OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-45...
Page 88 DIAGS ALARM 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. 3-46 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 89 In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Configure Datalogging > Memory Allocation %. SET PERCENT LRECS: CURRENTLY: SET TO: 60% ? CHANGE VALUE SAVE OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-47...
Page 90: Communication Settings
The Baud Rate screen is used to set the RS-232/RS-485 interface baud rate. Baud rates of 1200, 2400, 4800, and 9600, 19200, 38400, 57600, and 115200 are available. In the Main Menu, choose Instrument Controls > Communication ● Settings > Baud Rate. 3-48 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 91 ID number if two or more of the same instruments are connected to one computer. Valid Instrument ID numbers are from 0 to 127. The Model 146i has a default Instrument ID of 51. For more information about the Instrument ID, see Appendix B “C-Link Protocol...
Page 92 The following interval times are available: 1, 2, 5, 10, 20, 30, 60, 90, 120, 180, 240, and 300 seconds. In the Main Menu, choose Instrument Controls > Communication ● Settings > Streaming Data Config > Streaming Data Interval. 3-50 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 93 Settings > Streaming Data Config > Select Item > Other Measurements. OTHER MEASUREMENTS: >NONE TARGET GFLOW ACTUAL GFLOW TARGET ZFLOW ACTUAL ZFLOW TARGET TFLOW ACTUAL TFLOW OPER MODE DIAGS ALARM PRESSURE BENCH TEMP Thermo Fisher Scientific Model 146i Instruction Manual 3-51...
Page 94 SERIALX X SET TO: RS-485 ? CABLES BEFORE CHANGING MAKE SURE THAT THE CABLEXX SELECTION!XXXXXX IS OFF: PRESS TO CONFIRM TO CONTINUE TOGGLE VALUE OPER MODE DIAGS ALARM OPER MODE DIAGS ALARM 3-52 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 95 DHCP is on. For more information on DHCP, see “Use DHCP” above. In the Main Menu, choose Instrument Controls > Communication ● Settings > TCP/IP Settings > IP Address. Thermo Fisher Scientific Model 146i Instruction Manual 3-53...
Page 96 The host name screen is used to edit the host name. When DHCP is enabled, this name is reported to the DHCP server. In the Main Menu, choose Instrument Controls > Communication ● Settings > TCP/IP Settings > Host Name. 3-54 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 97: I/O Configuration
In the Main Menu, choose Instrument Controls > I/O Configuration > ● Output Relay Settings. Thermo Fisher Scientific Model 146i Instruction Manual 3-55...
Page 98 In the Main Menu, choose Instrument Controls > I/O Configuration > ● Output Relay Settings > Select Relay > Instrument State. CHOOSE SIGNAL TYPE: >ALARMS NON-ALARM OPER MODE DIAGS ALARM 3-56 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 99 DIAGS ALARM O3/PERM BIT 1 O3/PERM BIT 2 O3/PERM BIT 3 O3/PERM BIT 4 PHOTO BIT 1 PHOTO BIT 2 GAS A GAS B GAS C GAS D GAS E GAS F Thermo Fisher Scientific Model 146i Instruction Manual 3-57...
Page 100 If nothing is connected to the digital input pin, the state should be left at open to prevent the action from being triggered. Press to toggle and set the logic state open or closed. ● 3-58 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 101 AOUTS TO ZERO AOUTS TO FS External Solenoid The Model 146i can drive up to eight external solenoids. You can select the external solenoids with the External Solenoids menu. Each solenoid can be Settings connected to the following: Gas A, B, or C (or D, E, or F if the six gas option is installed), the ozonator, or the permeation oven.
Page 102 In the Main Menu, choose Instrument Controls > I/O Configuration > ● Ext Solenoid Settings > Select Solenoid > Instrument State. CHOOSE SIGNAL TYPE: >ALARMS NON-ALARM OPER MODE DIAGS ALARM 3-60 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 103 GAS B GAS C GAS D GAS E GAS F OPER MODE DIAGS ALARM OZONATOR PERM OVEN USER 1 USER 2 USER 3 USER 4 USER 5 USER 6 USER 7 USER 8 Thermo Fisher Scientific Model 146i Instruction Manual 3-61...
Page 104 Possible ranges for the voltage outputs are: 0-100 mV, 0-1, 0-5, 0-10 V. In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Output Config > Select Channel > Select Range. 3-62 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 105: Table 3-3. Analog Output Zero To Full-Scale Table
Target Gflow Gas flow controller setting Actual Gflow Gas flow controller setting Target Zflow Zero flow controller setting Actual Zflow Zero flow controller setting Target Tflow Total gas and zero flow controller settings Thermo Fisher Scientific Model 146i Instruction Manual 3-63...
Page 106: O 3 Lamp Temperature
Analog Output Config > Select Channel > Choose Signal To Output. CHOOSE SIGNAL TYPE: >CONCENTRATIONS OTHER MEASUREMENTS ANALOG INPUTS OPER MODE DIAGS ALARM CHOOSE SIGNAL - CONC SELECTED OUTPUT: CURRENTLY: GAS CONC SET TO: NONE CHANGE VALUE SAVE OPER MODE DIAGS ALARM 3-64 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 107: Table 3-4. Signal Type Group Choices
In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Input Config. ANALOG INPUT CONFIG: >CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 CHANNEL 6 CHANNEL 7 OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-65...
Page 108 The units may be from 1 to 3 characters in length, and defaults to V (volts). In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Input Config > Select Channel > Units. 3-66 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 109 In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Input Config > Select Channel > Table Points. NUMBER OF TABLE POINTS: CURRENTLY: SET TO: 10 ? CHANGE VALUE SAVE VALUE OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-67...
Page 110 1: 0.00 V = 000.0 U and point 2: 10.00 V = 10.0 U. In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Input Config > Select Table Point > User Value. 3-68 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 111: Screen Contrast
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 146i. For more information about the service mode, see “Service Menu” later in this chapter.
Page 112: Date/Time
I/O expansion board option is installed. In the Main Menu, choose Diagnostics. ● DIAGNOSTICS: >PROGRAM VERSION VOLTAGES FLOWS TEMPERATURES PRESSURE ANALOG INPUT READINGS ANALOG INPUT VOLTAGES OPER MODE DIAGS ALARM DIGITAL INPUTS RELAY STATES 3-70 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 113: Program Version
DIAGS ALARM Motherboard Voltages The Motherboard screen (read only) is used to display the current voltage readings on the motherboard. In the Main Menu, choose Diagnostics > Voltages > Motherboard ● Voltages. Thermo Fisher Scientific Model 146i Instruction Manual 3-71...
Page 114 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 15.0 SUPPLY 15.0 V 24.0 SUPPLY 24.0 V -3.3 SUPPLY -3.3 V OPER MODE DIAGS ALARM 3-72 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 115: Flows
The Pressure screen (read only) displays the current pressure reading. The pressure is measured by a pressure transducer. In the Main Menu, choose Diagnostics > Pressure. ● PRESSURE: 743.0 mmHg OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-73...
Page 116: Analog Input Readings
The Digital Inputs screen (read only) displays the state of the 16 digital inputs. In the Main Menu, choose Diagnostics > Digital Inputs. ● DIGITAL INPUTS: >INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 INPUT 7 OPER MODE DIAGS ALARM 3-74 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 117: Relay States
(DAC) calibration items. Channel choices include all analog outputs, 6 voltage channels, and 6 current channels (if the I/O expansion board option is installed). In the Main Menu, choose Diagnostics > Test Analog Outputs. ● Thermo Fisher Scientific Model 146i Instruction Manual 3-75...
Page 118: Instrument Configuration
Note If the analyzer is in service mode, pressing on the item will toggle it yes or no (with the exception of purchased options). ▲ In the Main Menu, choose Diagnostics > Instrument Configuration. ● 3-76 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 119: Contact Information
I/O Expansion board status (if installed) indicate that the power supplies are working and connections are successful. There are no setting screens for these alarms. In the Main Menu, choose Alarms. ● Thermo Fisher Scientific Model 146i Instruction Manual 3-77...
Page 120: Ambient Temperature
Temperature Limits the minimum ambient temperature alarm limit. The minimum and maximum ambient temperature screens function the same way. In the Main Menu, choose Alarms > Ambient Temp > Min or Max. ● 3-78 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 121 In the Main Menu, choose Alarms > O3 Lamp Temp > Min or Max. ● O3 LAMP TEMPERATURE: ACTUAL MIN: 60.0 SET MIN TO: 68.0 INC/DEC SAVE VALUE OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-79...
Page 122: Permeation Oven Temperature
200 to 1,000 mmHg. If the pressure reading goes beyond either the minimum or maximum limit, an alarm is activated. The word “ALARM” appears in the Run screen and in the Main Menu. In the Main Menu, choose Alarms > Pressure. ● 3-80 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 123: Photometer Bench Temperature
“ALARM” appears in the Run screen and in the Main Menu. In the Main Menu, choose Alarms > Phot Bench Temp. ● PHOT BENCH TEMPERATURE: ACTUAL 32.3 >MIN 15.0 45.0 OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-81...
Page 124: Photometer Lamp Temperature
The minimum and maximum lamp temperature screens function the same way. In the Main Menu, choose Alarms > Sample Flow > Min or Max. ● 3-82 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 125: Photometer Intensity
In the Main Menu, choose Alarms > Sample Flow > Min or Max. ● PHOTOMETER INTENSITY: ACTUAL MIN: 45000 Hz SET MIN TO: 55000 Hz ? INC/DEC SAVE VALUE OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-83...
Page 126: Service Menu
The flow control selection is visible only when the instrument is in service mode. For more information on the service mode, “Service Mode” earlier in this chapter. In the Main Menu, choose Service > Flow Control Selection. ● 3-84 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 127 The Gas Flow Controller screen is used to select the gas controller. Allowable selections are: 25, 50, 100, 200, and 500 sccm. The gas flow controller calibration points are reset to defaults when a new controller is selected. Thermo Fisher Scientific Model 146i Instruction Manual 3-85...
Page 128: Calibration Pressure/Temperature
The pressure is in millimetres mercury and the temperature is degrees Celsius. ▲ This adjustment should only be performed by an instrument service technician. ▲ In the Main Menu, choose Service > Calibration Pres/Temp. ● 3-86 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 129: Zero Flow Calibration
5, 35, 50, 65, 80, and 95% FS screens function the same way. In the Main Menu, choose Service > Zero Flow Calibration > 5, 20, ● 35, 50, 65, 80, or 95% FS. Thermo Fisher Scientific Model 146i Instruction Manual 3-87...
Page 130: Gas Flow Calibration
Solenoid choices Solenoid Select include: Solenoid A, B, or C, and Solenoid D, E, or F (if installed). In the Main Menu, choose Service > Gas Flow Calibration > Solenoid. ● 3-88 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 131: Pressure Calibration
The pressure sensor’s zero counts and span slope are displayed on the menu. Note This adjustment should only be performed by an instrument service technician. ▲ In the Main Menu, choose Service > Pressure Calibration. ● Thermo Fisher Scientific Model 146i Instruction Manual 3-89...
Page 132 The operator should use an independent barometer to measure the ambient pressure and enter the value on this screen before calibrating. ▲ In the Main Menu, choose Service > Pressure Calibration > Span. ● 3-90 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 133: Ambient 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 > Ambient Temp Calibration. ● Thermo Fisher Scientific Model 146i Instruction Manual 3-91...
Page 134: Bench Temperature Calibration
The analog output calibration is visible only when the instrument is in service mode. For more information on the service mode, see “Service Mode” earlier in the chapter. Note This adjustment should only be performed by an instrument service technician. ▲ 3-92 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 135 In the Main Menu, choose Service > Analog Out Calibration > Select ● Channel > Calibrate Full Scale. Thermo Fisher Scientific Model 146i Instruction Manual 3-93...
Page 136: Analog Input Calibration
ANALOG INPUT CAL: >CALIBRATE ZERO CALIBRATE FULL SCALE OPER MODE DIAGS ALARM Analog Input Calibrate The Analog Input Calibrate Zero screen is used to calibrate the zero state of the selected analog input. Zero 3-94 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 137: Permeation Oven Settings
For more information on the service mode, see “Service Mode” earlier in this chapter. In the Main Menu, choose Service > Perm Oven Settings. ● Note This adjustment should only be performed by an instrument service technician. ▲ Thermo Fisher Scientific Model 146i Instruction Manual 3-95...
Page 138 In the Main Menu, choose Service > Perm Oven Settings > Cal Gas ● Thermistor > Water Bath. CAL GAS THERM (BATH): CURRENTLY: 45.80 SET TO: 45.00 MOVE CURSOR CHANGE VALUE SAVE OPER MODE DIAGS ALARM 3-96 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 139 Permeation Oven Selection state to not present, or the desired temperature choice of 30, 35, and 45 °C. In the Main Menu, choose Service > Perm Oven Settings > Perm Oven ● Selection. Thermo Fisher Scientific Model 146i Instruction Manual 3-97...
Page 140 In the Main Menu, choose Service > Perm Oven Settings > Factory Cal ● Gas Therm > Low or High Point. CAL GAS THERM LOW POINT: CURRENTLY: 0= 3850 Ohms SET TO: 04000 Ohms MOVE CURSOR CHANGE VALUE SAVE OPER MODE DIAGS ALARM 3-98 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 141 The low and high point screens function the same way. In the Main Menu, choose Service > Perm Oven Settings > Factory Cal ● Oven Therm > Low or High Point. Thermo Fisher Scientific Model 146i Instruction Manual 3-99...
Page 142: Lamp Setting
Mode” earlier in the chapter. In the Main Menu, choose Service > Lamp Setting. ● BENCH LAMP SETTING: INT: 100246 Hz LAMP SETTING: 61.1 % CHANGE VALUE SAVE VALUE OPER MODE DIAGS ALARM 3-100 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 143: Intensity Check
The Sample Gas screen (read only) sets the valves to route the sample gas through the photometer and displays the intensity and noise. In the Main Menu, choose Service > Intensity Check > Sample Gas. ● Thermo Fisher Scientific Model 146i Instruction Manual 3-101...
Page 144: Display Pixel Test
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 OPER MODE DIAGS ALARM 3-102 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 145: 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. ● Thermo Fisher Scientific Model 146i Instruction Manual 3-103...
Page 146: Lock Instrument
The change password is shown if the instrument is unlocked. In the Main Menu, choose Password > Change Password. ● ENTER NEW PASSWORD: RANGXXXXXE ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 ./- SAVE OPER MODE DIAGS ALARM 3-104 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 147: Remove Password
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 OPER MODE DIAGS ALARM Thermo Fisher Scientific Model 146i Instruction Manual 3-105...
Page 149: Chapter 4 Calibration
2. Measure barometric pressure and room temperature. 3. Connect a suitable flow meter to the mass flow controller outlet. 4. Set Model 146i to Gas Drive or Zero Air Flow Calibration as described in the “Operation” chapter. 5. Set flow controller to 95 percent of full scale, then wait until flow meter reading stabilizes.
Page 150: Photometer Calibration
Calibration Photometer Calibration Photometer The ozone generator used on the Model 146i qualifies as a transfer standard Calibration under current U.S. Environmental Protection Agency requirements. In order to use it as a transfer standard, the user must certify the generator, following the procedures published in the technical assistance document for the calibration of ozone transfer standards.
Page 151: Ozonator Control Check
(Figure 4-2). 1. Connect the 146i OUTPUT port to the 49i PS INPUT port. 2. Set ozone concentration at different levels. 3. Compare the ozone concentration readings on the 146i and 49i PS. Thermo Fisher Scientific...
Page 152: Figure 4-2. Ozonator Control Check Flow Schematic
Calibration Ozonator Control Check Figure 4-2. Ozonator Control Check Flow Schematic Model 146i Instruction Manual Thermo Fisher Scientific...
Page 153 • “Capillary Service” page 5-5 • “Ozonator Capillary Replacement (Ozonator option)” page 5-6 • “Pressure Regulator Capillary Replacement” page 5-7 • “Pump Capillary Replacement (Photometer option)” page 5-8 • “Pump Rebuilding” page 5-9 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 154: Chapter 5 Preventive Maintenance
Clean the outside case using a damp cloth being careful not to damage the Cleaning labels on the case. Equipment Damage Do Not use solvents or other cleaning products to clean the outside case. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 155: Fan Filter Inspection And Cleaning
For more information about appropriate safety precautions, see the “Servicing” chapter. 1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Disconnect the plumbing and electrical connections. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 156: Monitoring Detector Frequency And Noise
9. Replace the photometer components following the previous steps in reverse. Note It is recommended that the Model 146i be recalibrated if the photometer has been completely disassembled. Always check for leaks after replacing any component. Refer to “Leak Test and Pump Checkout” in the “Servicing”...
Page 157: Capillary Service
Therefore, the cell should first be cleaned and the frequency re-measured. Capillary Service The Model 146i includes the following capillaries (depending on the instrument options). Ozonator capillary Photometer capillary...
Page 158: Ozonator Capillary Replacement (Ozonator Option)
1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Unscrew the knurled fitting, separate the components, and remove the capillary (Figure 5-2). Model 146i Instruction Manual Thermo Fisher Scientific...
Page 159: Pressure Regulator Capillary Replacement
1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Unscrew the knurled fitting, separate the components, and remove the capillary (Figure 5-3). Thermo Fisher Scientific Model 146i Instruction Manual...
Page 160: Pump Capillary Replacement (Photometer Option)
1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Loosen the fitting connecting the capillary to the pump and remove the capillary. (Figure 5-4). Model 146i Instruction Manual Thermo Fisher Scientific...
Page 161: Pump Rebuilding
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. 2. Loosen the fittings and remove both lines going to the pump. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 162: Figure 5-5. Rebuilding The Pump
Teflon® (white) side of the diaphragm is facing up and that the flapper valves cover the holes of the top and bottom plate. 6. Test the pump for leaks. Refer to “Leak Test and Pump Checkout” in the “Servicing” chapter. 5-10 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 163: Chapter 6 Troubleshooting
6-8 • “Connector Pin Descriptions” page 6-10 • “Service Locations” page 6-25 Safety Precautions Read the safety precautions in the Preface and the “Servicing” chapter before performing any actions listed in this chapter. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 164: Troubleshooting Guide
Instrument in local mode Put instrument in remote switching in remote mode. mode Defective solenoid connector board Replace solenoid connector board. Defective measurement interface Replace measurement board interface board. Defective cable Replace cable. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 165 Check for leaks and repair (see “Servicing” chapter). Zero air flow unstable Check zero air flow meter. Lamp failure Replace lamp. (see “Servicing” chapter). Defective ozonator board Replace ozonator board (see “Servicing” chapter). Thermo Fisher Scientific Model 146i Instruction Manual...
Page 166 Replace pressure transducer. Defective measurement interface Replace measurement board interface board. Output signal Defective recorder Replace or repair recorder. noisy Sample is varying Run instrument on stable ozone source, if quiet, no malfunction. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 167: Table 6-2. Troubleshooting - Alarm Messages
Alarm - Bench Temp Defective fan Check for 24 VDC on fan connector and replace fan if 24 VDC is applied to fan. Check fan filter Clean or replace foam filter (see “Preventive Maintenance” chapter). Thermo Fisher Scientific Model 146i Instruction Manual...
Page 168 Recycle AC power to board instrument. If still alarming, replace board. Alarm - I/O Exp Status I/O expansion board was installed, Re-install board, if desired, but is not currently installed. and recycle power. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 169 Disconnect external devices from board, and recycle power. If alarm persists, replace board. Internal cables not connected Check that all internal cables properly are connected properly. Defective optional I/O expansion Replace board. board Thermo Fisher Scientific Model 146i Instruction Manual...
Page 170: Board-Level Connection Diagrams
3 Cond 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 146i Instruction Manual Thermo Fisher Scientific...
Page 171: Figure 6-2. Board-Level Connection Diagram - Measurement System
GAS F SOL. 2 Pin 2 Pin Z – A SOL. 2 Pin 2 Pin EXT/INT SOL. PUMP AC 2 Pin 3 Pin 3 Pin Figure 6-2. Board-Level Connection Diagram - Measurement System Thermo Fisher Scientific Model 146i Instruction Manual...
Page 172: Connector Pin Descriptions
-RS485 to Interface Board 10-BASE-T 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 (-) 6-10 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 173 -RS485 to Spare Board Power Fail Relay N.C. Contact Ground TTL Input 1 TTL Input 2 Ground TTL Input 5 TTL Input 7 TTL Input 8 TTL Input 10 Ground TTL Input 13 Thermo Fisher Scientific Model 146i Instruction Manual 6-11...
Page 174 TTL Input 16 Ground Analog Voltage Output 2 Analog Voltage Output 4 Ground Analog Voltage Output 6 Ground SER EN Serial Enable Jumper +3.3V 24V IN +24V Ground DIGITAL I/O +24V +24V 6-12 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 175 Ground Ground Ground +24V +24V +24V +24V +24V 24V MONITOR 24V Power Monitor Ground FRONT PANEL Ground Ground LCLK – LCD Signal Ground Ground LLP – LCD Signal LFLM – LCD Signal Thermo Fisher Scientific Model 146i Instruction Manual 6-13...
Page 176 Keypad Col 1 Select Keypad Col 4 Select Keypad Col 3 Select Ground Ground Ground Ground +24V +24V RS232/RS485:A P1:A Serial Port 1 RX (-RS485 IN) Serial Port 1 TX (-RS485 OUT) Ground 6-14 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 177: Table 6-4. Front Panel Board Connector Pin Diagram
AC INTF BD AC-HOT AC-NEUT AC-Ground Table 6-4. Front Panel Board Connector Pin Diagram Connector Reference Signal Label Designator Description MOTHER Ground BOARD Ground LCLK – LCD Signal Ground Ground LLP – LCD Signal Thermo Fisher Scientific Model 146i Instruction Manual 6-15...
Page 178 Keypad Col 4 Select Keypad Col 3 Select Ground Ground Ground Ground +24V +24V LCD DATA LFLM_5V – LCD Signal LLP_5V – LCD Signal LCLK_5V – LCD Signal LCD_ONOFF_5V – LCD Signal 6-16 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 179: Table 6-5. I/O Expansion Board (Optional) Connector Pin Descriptions
Table 6-5. I/O Expansion Board (Optional) Connector Pin Descriptions Connector Reference Signal Label Designator Description EXPANSION I/O Analog Voltage Input 1 Analog Voltage Input 2 Analog Voltage Input 3 Ground Analog Voltage Input 4 Thermo Fisher Scientific Model 146i Instruction Manual 6-17...
Page 180 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 +RS485 to Motherboard -RS485 to Motherboard 6-18 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 181: Table 6-6. Digital Output Board Connector Pin Descriptions
Solenoid Drive Output 2 Solenoid Drive Output 3 Solenoid Drive Output 4 Solenoid Drive Output 5 Solenoid Drive Output 6 Solenoid Drive Output 7 Solenoid Drive Output 8 Relay 1 Contact b Thermo Fisher Scientific Model 146i Instruction Manual 6-19...
Page 182: Table 6-7. Measurement Interface Board Connector Pin Descriptions
Table 6-7. Measurement Interface Board Connector Pin Descriptions Connector Reference Signal Label Designator Description AC IN AC-HOT AC-NEUT AC-Ground AC PUMP AC-HOT AC-NEUT Switched AC-Ground BENCH TEMP Bench Temperature Thermistor Ground PRES Pressure Sensor Input Ground +15V 6-20 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 183 Photometer Lamp Intensity Control Voltage Output Photometer Lamp Intensity Control Voltage Input Photometer Heater Thermistor +24V Ground Photometer Lamp On/Off Control Ground Ground +24V (Fused) Ground +24V (Fused) Ground 24V IN +24V Ground DATA Ground Thermo Fisher Scientific Model 146i Instruction Manual 6-21...
Page 184 Gas C Solenoid Control +24V Gas E Solenoid Control Z – A Solenoid Control Gas B Solenoid Control Gas D Solenoid Control +24V Gas F Solenoid Control EXT/INT Solenoid Control PERM 1 +24V 6-22 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 185: Table 6-8. Solenoid Connector Board Pin Descriptions
+24V Gas F Solenoid Control EXT/INT Solenoid Control GAS A +24V Gas A Solenoid Control GAS B +24V Gas B Solenoid Control GAS C +24V Gas C Solenoid Control GAS D +24V Thermo Fisher Scientific Model 146i Instruction Manual 6-23...
Page 186: Table 6-9. Ozonator Power Supply Connector Pin Descriptions
+24V Heater Current Sense Ozonator Lamp Thermistor 2 INTF Ozonator Lamp Intensity Control Voltage Input Ozonator Lamp Intensity Control Voltage Output Ozonator Heater Thermistor +24V Ground Ozonator Lamp On/off Control Ground Ground 6-24 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 187: 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 Thermo Fisher Scientific Model 146i Instruction Manual 6-25...
Page 188 Troubleshooting Service Locations 6-26 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 189: Servicing
Servicing Chapter 7 This chapter explains how to replace the Model 146i 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 190 “Solenoid Replacement” page 7-38 “Pressure Transducer Replacement (Photometer option)” page 7-39 “Pressure Transducer Calibration (Photometer option)” page 7-40 “Ozonator Lamp Replacement (Ozonator option)” page 7-42 “Ozonator Lamp Heater Replacement (Ozonator option)” page 7-43 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 191 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. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 192: Figure 7-1. Properly Grounded Antistatic Wrist Strap
The firmware can be updated by the user in the field via the serial port or over the Ethernet. This includes both the main processor firmware and the firmware in all low-level processors. Refer to the i-Port manual for the firmware update procedure. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 193: Table 7-1. Model 146I Replacement Parts
Servicing Replacement Parts List Replacement Parts Table 7-1 lists the replacement parts for the Model 146i major List subassemblies. Refer to Figure 7-2 to identify the component location. Table 7-1. Model 146i Replacement Parts Part Number Description 100480-00 Front Panel Pushbutton Board...
Page 194: Table 7-2. Model 146I Cables
103206-00 Solenoid, span gas 4291 Charcoal scrubber assembly (external) Cable List Table 7-2 describes the Model 146i cables. See the “Troubleshooting” chapter for associated connection diagrams and board connector pin descriptions. Table 7-2. Model 146i Cables Part Number Description 101036-00...
Page 195: Table 7-3. External Device Connection Components
Servicing External Device Connection Components Table 7-2. Model 146i Cables, continued Part Number Description 101364-00 DC Power Supply Status Monitor 101054-00 Motherboard to Front Panel Board 101035-00 DC Power Supply AC Input 101033-00 AC from Receptacle 101377-00 AC to Power Switch...
Page 196: Figure 7-2. Component Layout
Mixing Chamber Manifold Solenoid (Perm 1) Solenoid (Zero Air) Solenoid (Perm 2) Pressure Regulator Mass Flow Controllers Reaction Pressure Back Pressure Reaction Permeation Oven Chamber Transducer Chamber Regulator Solenoid Figure 7-2. Component Layout Model 146i Instruction Manual Thermo Fisher Scientific...
Page 197: Figure 7-3. Removing The Measurement Bench And Lowering The Partition Panel
A properly grounded antistatic wrist strap must be worn while handling any internal component. 1. Turn instrument OFF and unplug the power cord. 2. Disconnect the plumbing connections at the rear of the measurement bench. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 198: Fuse Replacement
Use the following procedure to replace the fuse. Equipment Required: Replacement fuses: 250VAC, 3 Amp, SlowBlow (for 100VAC and 110VAC models) 250VAC, 1.60 Amp, SlowBlow (for 220-240VAC models) 1. Turn instrument OFF and unplug the power cord. 7-10 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 199: Accessing The Service Mode
Use the following procedure to check for leaks in the system and to leak test Checkout - with the pump. This procedure is for Model 146i instruments that have the photometer option. For Model 146i instruments that do not have the Photometer Option photometer option, refer to “Leak Test and Pump Checkout - without...
Page 200: Leak Test And Pump Checkout - Without Photometer Option
Use the following procedure to check for leaks in the system and to leak test Checkout - without the pump. This procedure is for Model 146i instruments that do not have the photometer option. For Model 146i instruments that have the Photometer Option photometer option, refer to “Leak Test and Pump Checkout - with...
Page 201 5. Attach the external vacuum pump/vacuum gauge assembly with the vacuum gauge side to the calibrator EXHAUST port. 6. Apply vacuum until the gauge stabilizes, then trap the vacuum with the shut-off valve. Thermo Fisher Scientific Model 146i Instruction Manual 7-13...
Page 202: Mass Flow Controller 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. 2. Loosen all four fittings to mass flow controllers. 7-14 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 203: Figure 7-4. Replacing A Mass Flow Controller
9. Install new flow controller by following the above directions in reverse. 10. Leak check system and recalibrate. Refer to “Leak Test and Pump Checkout” in this chapter. Thermo Fisher Scientific Model 146i Instruction Manual 7-15...
Page 204: Pump Replacement (Photometer Option)
Pump Mounting Screws (2) (Bottom) Figure 7-5. Replacing the Pump 3. Remove both lines from pump. 4. Loosen the four captive screws holding the pump to the mounting plate and remove the pump. 7-16 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 205: Fan Replacement - Rear Panel
4. Remove the fan guard from the fan and remove the filter. 5. Remove the four fan mounting screws and remove the fan. 6. Install a new fan following the previous steps in reverse. Thermo Fisher Scientific Model 146i Instruction Manual 7-17...
Page 206: Figure 7-6. Replacing The Rear Panel Fan
3. Disconnect the electrical connection from the fan. 4. Remove the fan mounting screws (4) and nuts and remove the fan. 5. Install the new fan using the previous steps in reverse. 7-18 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 207: Analog Output Testing
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 146i Instruction Manual 7-19...
Page 208: Figure 7-7. Rear Panel Analog Input And Output Pins
Current Outputs Analog Voltage Inputs Analog Voltage Outputs Figure 7-7. Rear Panel Analog Input and Output Pins Table 7-4. Analog Output Channels and Rear Panel Pin Connections Voltage Current Channel Channel 7-20 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 209: Analog Output Calibration
Analog Out Calibration, and press The Analog Output Cal screen appears. Note If Service is not displayed, refer to ““Accessing the Service Mode” page 7-11, then return to the beginning of this step. Thermo Fisher Scientific Model 146i Instruction Manual 7-21...
Page 210: Analog Input Calibration
Analog Input Calibration, and press The Analog Input Cal screen appears. Note If Service is not displayed, refer to ““Accessing the Service Mode” page 7-11, then return to the beginning of this step. 7-22 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 211: Calibrating The Input Channels To Full Scale
Analog Input Calibration, and press The Analog Input Cal screen displays input channels 1-8. Note If Service is not displayed, refer to ““Accessing the Service Mode” page 7-11, then return to the beginning of this step. Thermo Fisher Scientific Model 146i Instruction Manual 7-23...
Page 212: I/O Expansion Board Replacement (Optional)
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. 7-24 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 213: Figure 7-8. Replacing The I/O Expansion Board (Optional)
Motherboard Support Bracket Mounting Stud Motherboard Digital Output Board I/O Expansion Board (Opt) Figure 7-8. Replacing the I/O Expansion Board (Optional) I/O Expansion Board Motherboard Digital Output Board Figure 7-9. Rear Panel Board Connectors Thermo Fisher Scientific Model 146i Instruction Manual 7-25...
Page 214: Digital Output Board Replacement
5. Pop off the digital output board from the mounting studs and remove the board. 6. To install the digital output board, follow previous steps in reverse. Motherboard Use the following procedure to replace the motherboard (Figure 7-8). Replacement Equipment Required: Motherboard Philips screwdriver 7-26 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 215: Measurement Interface Board Replacement
Measurement interface board Philips screwdriver 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 146i Instruction Manual 7-27...
Page 216: Front Panel Board Replacement
6. Re-install the measurement bench. Refer to “Removing the Measurement Bench and Lowering the Partition Panel” page 7-9. Front Panel Board Use the following procedure to replace the front panel board (Figure 7-11). Replacement Equipment Required: 7-28 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 217: Lcd Module Replacement
Ribbon Cables (3) Two-Wire Connector Bottom Support Figure 7-11. Replacing the Front Panel Board and the LCD Module LCD Module Use the following procedure to replace the LCD module (Figure 7-11). Replacement Equipment Required: Thermo Fisher Scientific Model 146i Instruction Manual 7-29...
Page 218 3. Disconnect the ribbon cable and the two-wire connector from the front panel board. 4. Loosen left-side retaining screw (viewed from front) and slide the LCD module out towards the right and rear of the instrument. 7-30 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 219: Photometer Lamp Replacement (Photometer Option)
Noisy output signal, which has been traced to an unstable lamp (see the “Troubleshooting” chapter). Note It is not necessary to recalibrate the Model 146i since it is a ratio instrument and replacing the lamp does not affect the calibration. However, after replacing the photometer lamp, you must adjust the photometer lamp voltage to ensure proper operation.
Page 220: Figure 7-12. Photometer Components
8. Re-install the instrument cover. 9. Reconnect power and turn instrument ON. 10. After lamp has stabilized (approximately 15 minutes), refer to the “Photometer Lamp Voltage Adjustment” procedure that follows to adjust the photometer lamp voltage. 7-32 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 221: Photometer Lamp Voltage Adjustment (Photometer Option)
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. 2. Disconnect the plumbing and electrical connections. Thermo Fisher Scientific Model 146i Instruction Manual 7-33...
Page 222: Photometer Replacement (Photometer Option)
(Figure 7-12) and remove the photometer. 4. Perform the previous steps in reverse to install the new photometer. 5. Calibrate the instrument. Refer to the “Calibration” chapter in this manual. 7-34 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 223: Photometer Board Replacement (Photometer Option)
6. To install the new photometer board, follow previous steps in reverse. 7. Reinstall the ozonator board. Detector Use the following procedure to replace the photometer detector Replacement (Figure 7-12). (Photometer option) Equipment Required: Detector assembly Thermo Fisher Scientific Model 146i Instruction Manual 7-35...
Page 224: Photometer Thermistor 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. 2. Disconnect the thermistor electrical connection. 7-36 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 225: Photometer Temperature Calibration (Photometer Option)
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 146i Instruction Manual 7-37...
Page 226: Solenoid Replacement
4. Wait at least 10 seconds for the reading to stabilize, use to enter the known temperature, and press save the temperature value. 5. Install the cover. Solenoid The Model 146i includes the following solenoids. Refer to “Component Replacement Layout” page 7-8 to locate these solenoids within the instrument.
Page 227: Pressure Transducer Replacement (Photometer Option)
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 PRESS connector from the measurement interface board. Thermo Fisher Scientific Model 146i Instruction Manual 7-39...
Page 228: Pressure Transducer Calibration (Photometer Option)
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. Remove the cover. 7-40 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 229 9. Wait at least 10 seconds for the ambient reading to stabilize, use to enter the known barometric pressure, and press to save the pressure value. 10. Reconnect the tubing to the pressure transducer. 11. Install the cover. Thermo Fisher Scientific Model 146i Instruction Manual 7-41...
Page 230: Ozonator Lamp Replacement (Ozonator Option)
Allen screws on the clamp. 8. Slide the lamp insulation against the ozonator. 9. Re-connect the ozonator LAMP connector to the ozonator board. 10. Replace the cover and reconnect power. 7-42 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 231: Ozonator Lamp Heater Replacement (Ozonator Option)
6. Remove the ozonator lamp heater block from the ozonator by removing four Allen screws. 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. Thermo Fisher Scientific Model 146i Instruction Manual 7-43...
Page 232: Ozonator Replacement (Ozonator Option)
5. Install new ozonator by following the above procedure in reverse. Ensure all fittings are tight. 6. Perform a leak test. Refer to “Leak Test and Pump Checkout” in this chapter. 7-44 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 233: Ozonator Board Replacement (Ozonator Option)
3. Remove the two screws from the top of the board. 4. Pop off the board from the bottom mounting studs and remove the board. 5. To install the new ozonator board, follow previous steps in reverse. Thermo Fisher Scientific Model 146i Instruction Manual 7-45...
Page 234: Permeation Oven Replacement
Attach glass chamber to top assembly by gently pushing together with a slight twisting motion (Figure 7-14). f. Replace glass chamber assembly into oven until top of assembly is flush or slightly below oven top (Figure 7-15). 7-46 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 235: Figure 7-14. Removing The Glass Chamber Assembly
7. Check the system for leaks. Refer to “Leak Test and Pump Checkout” in this chapter. Knurled Screw Glass Chamber Assembly Top Assembly Oven Top Glass Chamber Oven Enclosure Figure 7-14. Removing the Glass Chamber Assembly Thermo Fisher Scientific Model 146i Instruction Manual 7-47...
Page 236: Reaction Chamber/Mixing Chamber Replacement
1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Remove the plumbing. 3. Remove two (2) Allen screws from the top of the holder assembly. 4. Remove two (2) Allen screws from the side of the holder assembly. 7-48 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 237: Pressure Regulator Replacement
Figure 7-16. Replacing the Pressure Regulator 4. Remove the pressure regulator and replace with a new unit. 5. Reconnect plumbing and check for leaks. Refer to “Leak Test and Pump Checkout” in this chapter. Thermo Fisher Scientific Model 146i Instruction Manual 7-49...
Page 238: Back Pressure Regulator Replacement
7. Remove the back pressure regulator. 8. Install a new back pressure regulator and calibrate. 9. After calibration, tighten the locking nut securing the position of the back pressure regulator handle. 10. Remove flow controller assembly. 7-50 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 239: Pressure Regulator(S) Adjustment
For instruments equipped with only the permeation oven option, attach the digital flow meter in place of the tee fitting between the back pressure regulator input and the Perm 1 solenoid valve. Thermo Fisher Scientific Model 146i Instruction Manual 7-51...
Page 240 10. Disconnect the digital flow meter and all associated plumbing, reconnect the instrument plumbing and tighten securely. 11. Set GAS A to OFF and set the output pressure regulator to 10 psig. 7-52 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 241: 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 146i Instruction Manual 7-53...
Page 242: 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. 1-866-282-0430 Toll Free 1-508-520-0430 International 7-54 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 243: Chapter 8 System Description
• “I/O Components” page 8-11 describes the input and output communication functions and components. Hardware The Model 146i components include (Figure 8-1): • Flow system • Photometer with photometer lamp (optional) • Pressure transducer •...
Page 244: Figure 8-1. Hardware Components
Figure 8-1. Hardware Components Flow System The Model 146i Dynamic Gas Calibrator can produce up to four different flow streams, using three hardware modules. The basic unit contains only the dilution module. There are two optional modules, either or both of which can be added to the basic instrument.
Page 245: Precision Gas Dilution
Ozone Generation The Model 146i produces ozone by exposing air to light at 185 nm. The ozone level can be changed by changing the flow through the ozone generator or by changing the light intensity. In the Model 146i, the selected light intensity level is held constant by temperature controlling the lamp and by using a highly stable lamp power supply.
Page 246 = the O3 generator air flow rate, sccm = the volume of the reaction chamber The flows through the Model 146i satisfy these requirements. The reaction chamber volume is 150 cc. Flow through the ozonator is approximately 150 sccm using the back pressure regulator (set to approximately 3 psi) and the capillary.
Page 247: Photometer
Thermistor Pump The pump draws the sample gas through the photometer. Sample/Reference The sample/reference solenoid valves allow sample gas or reference (zero) gas to pass through the cell. Solenoid Valves Thermo Fisher Scientific Model 146i Instruction Manual...
Page 248: Ozonator Solenoid
Mixes the gas dilutions provided the mass flow controllers. Manifold Distributes gas from various sources to an analyzer. Mass Flow Controllers Governs high gas flow to control diluting zero air and governs low gas flow for controlling gas to be diluted. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 249: Pressure Regulator And Gauge
The counters are accumulated over the past second and the analog inputs are averaged over that second. The high-level processor polls the low-level processors once per second to exchange the measurement and control data. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 250: Output Communication
Internal pumps and heaters all operate on 110VAC. An optional transformer is required if operating on the 210-250VAC or 90-110VAC ranges. An on/off switch controls all power to the instrument, and is accessible on the front panel. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 251: Motherboard
It sends status data to the motherboard and receives control signals from the motherboard. Measurement Interface Board Connectors located on the measurement interface board include: Connectors Thermo Fisher Scientific Model 146i Instruction Manual...
Page 252 The oscillator circuit that drives the high voltage output is inhibited until this operating temperature is reached. A power transistor is used to heat the lamp housing. Thermistors sense the housing temperature for heater control and for status information. 8-10 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 253: Digital Output Board
Analog output (voltage and current) • Analog input (voltage) • Digital output (TTL levels) • Digital input (TTL levels) Note The instrument has spare solenoid valve drivers and I/O support for future expansion. Thermo Fisher Scientific Model 146i Instruction Manual 8-11...
Page 254: Analog Voltage Outputs
The user may assign a label, unit, and a voltage to user-defined unit conversion table (up to 16 points). All voltage inputs have a resolution of 12 bits over the range of 0 to 10 volts. 8-12 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 255: Digital Relay Outputs
• C-Link • Streaming Data • Modbus Slave 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. Thermo Fisher Scientific Model 146i Instruction Manual 8-13...
Page 256: Connection
The instrument uses a four wire RS-485 configuration with automatic flow control (SD). Refer to Table 8-2 for the DB9 connector pin configuration. Table 8-2. RS-485 DB Connector Pin Configuration DB9 Pin Function + receive - receive + transmit - transmit ground 8-14 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 257: 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 146i calibrator. 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 258 System Description I/O Components 8-16 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 259: Optional Equipment
Optional Equipment Chapter 9 The Model 146i is available with the following options: • “Ozonator” page 9-1 • “Photometer” page 9-1 • “Zero Air Source” page 9-1 • “Permeation Oven” page 9-2 • “Six Span Inputs” page 9-10 • “Span Gas Mass Flow Controller”...
Page 260: Permeation Oven
Note Keep the glass clean when handling it. 4. Place the permeation tube(s) in the glass chamber. 5. Attach the glass chamber to the top assembly by gently pushing the two together with a slight twisting motion. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 261: Computation Of Concentrations
1. Physically install the permeation oven and valves into the instrument and connect the cables and plumbing. 2. From the Perm Oven Settings menu in the Service menu, select Perm Oven Selection, then select 45 ° Thermo Fisher Scientific Model 146i Instruction Manual...
Page 262 13. Press to return to the Factory Cal Oven Therm menu. 14. Connect a resistance of approximately 5 KΩ across pins 3 and 4 of POJ3. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 263: Permeation Tube Oven Calibration
In either case, use the following procedure for setting the perm oven temperature. 1. Unplug POJ3 from the measurement interface board. Place a 4.369 KΩ resistor across pins 3 and 4 on the board. Thermo Fisher Scientific Model 146i Instruction Manual...
Page 264: Figure 9-1. Cal Oven Therm Resistor Screen
(if necessary, use an extension cable to reach). 2. Turn on the power to the water bath. Using an NIST traceable thermometer with a resolution of 0.01 C, adjust the water bath ± ° to 45 ° Model 146i Instruction Manual Thermo Fisher Scientific...
Page 265: Figure 9-2. Cal Gas Therm Bath Screen
1. Connect a 4.369 KΩ resistor across pins 1 and 2 of POJ1 (use a resistance substitution box and an accurate meter, if necessary). 2. From the Permeation Oven menu, select Cal Gas Thermistor, then select known resistor (Figure 9-3). Thermo Fisher Scientific Model 146i Instruction Manual...
Page 266: Determining Permeation Rate By Weight Loss
1. Make sure the oven has been calibrated as described in the “Permeation Tube Oven Calibration” procedure described previously. 2. Insert the permeation tube carefully. Do not touch with fingers. 3. Turn on the instrument. 4. Wait 48-72 hours for the permeation tube to stabilize. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 267: Determining Release Rate By Transfer Standard
2. Determine the permeation rate for the permeation tube in the Transfer Standard, or install a certified permeation tube. 3. Allow the permeation tubes in both the 146i and the Transfer Standard to stabilize for at least 48 hours. 4. Carefully calibrate the 146i using the Transfer Standard. The output of the Transfer Standard should be connected to the SAMPLE bulkhead on the rear panel of the 146i.
Page 268: Six Span Inputs
Six Span Inputs 6. Measure the flow rate into the ZERO bulkhead on the rear panel of the 146i. Be sure that the charcoal scrubber is connected. Note the flow and measured gas concentration. 7. From the flow and measured concentration, compute the permeation tube release rate.
Page 269: 25-Pin Terminal Board Assembly
Table 9-2 provides the cable color codes. For associated part numbers, refer to “External Device Connection Components” in the “Servicing” chapter. Thermo Fisher Scientific Model 146i Instruction Manual 9-11...
Page 270: Table 9-1. Cable Options
37-pin cables. VIOLET PINK/GREEN GRAY PINK/RED WHITE PINK/VIOLET PINK LIGHT BLUE LIGHT GREEN LIGHT BLUE/BROWN BLACK/WHITE LIGHT BLUE/RED BROWN/WHITE LIGHT BLUE/VIOLET RED/WHITE LIGHT BLUE/BLACK ORANGE/WHITE GRAY/GREEN GREEN/WHITE GRAY/RED BLUE/WHITE GRAY/VIOLET VIOLET/WHITE LIGHT GREEN/BLACK 9-12 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 271: Mounting Options
EIA rack 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. Thermo Fisher Scientific Model 146i Instruction Manual 9-13...
Page 272: Figure 9-4. Rack Mount Option Assembly
Figure 9-4. Rack Mount Option Assembly 9-14 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 273: Figure 9-5. Bench Mounting
Figure 9-5. Bench Mounting Thermo Fisher Scientific Model 146i Instruction Manual 9-15...
Page 274: Figure 9-6. Eia Rack Mounting
Figure 9-6. EIA Rack Mounting 9-16 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 275: Figure 9-7. Retrofit Rack Mounting
Figure 9-7. Retrofit Rack Mounting Thermo Fisher Scientific Model 146i Instruction Manual 9-17...
Page 276 Optional Equipment Mounting Options 9-18 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 277: Appendix A Warranty
(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 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 278 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 146i Instruction Manual Thermo Fisher Scientific...
Page 279: Instrument Identification Number
C-Link Protocol Commands This appendix provides a description of the C-Link protocol commands that can be used to remotely control a Model 146i 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 280: Commands
(ASCII) character. The command in the example below begins with the ASCII character code 179 decimal, which directs the command to the Model 146i, and is terminated by a carriage return “CR” (ASCII character code 13 decimal). <ASCII 179> T I M E <CR>...
Page 281 Copies current lrec selection into the scratch pad B-21 copy sp to lrec Copies current selections in scratch pad into lrec list B-21 copy sp to srec Copies current selections in scratch pad into srec list B-21 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 282 Selects manual preset level for gas B-28 gas name Sets the gas name B-29 gas off Selects gas off B-29 gas params Returns parameters for gas (tank conc, span, flow) B-29 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 283 Reports photometer lamp drive setting B-24 lamp temp Reports photometer lamp temperature B-15 lamp voltage bench Reports photometer bench lamp voltage in volts B-15 lamp voltage o3 Reports ozonator lamp voltage in volts B-15 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 284 Reports/sets photometer O background B-24 o3 coef Reports/sets photometer O coefficient B-24 o3 conc Sets ozonator target concentration under photometer control B-34 o3 setting Reports ozonator target concentration under photometer B-35 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 285 Reports/sets current set time period for streaming data B-22 stream time Reports/sets a time stamp to streaming data or not B-22 temp comp Reports/sets photometer temperature compensation on or off B-37 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 286: Measurements
This command reports the current concentration of gas being supplied by the Model146i. Send: gas conc Receive: gas conc actual 100.000 target 1.600 ppm gflow zflow These commands report the current zero air or gas flow. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 287 Send: pres Receive: pres 753.4 mmHg, actual 753.4 status This command returns the gas and span status of the Model 146i. Send: status Receive: status remote gas A span 4 flags This reports 8 hexadecimal digits (or flags) that represent the status of the pressure and temperature compensation status, flow mode, and alarms.
Page 288: Alarms
58 °C. These commands are only available if the photometer option is installed. Send: set alarm bench lamp temp max 58 Receive: set alarm bench lamp temp max 58 ok B-10 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 289 These commands report the photometer detector intensity alarm minimum and maximum value current settings. The example below reports the intensity alarm minimum value is 45000 Hz. These commands are only available if the photometer option is installed. Thermo Fisher Scientific Model 146i Instruction Manual B-11...
Page 290 These commands set the ozonator lamp temperature alarm minimum and maximum values to value, where value is a floating-point number representing ozonator lamp temperature alarm limits in degrees C. The B-12 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 291 B–3. The example below sets the O concentration minimum alarm trigger to floor. These commands are only available if the photometer option is installed. Send: set alarm trig conc 0 Receive: set alarm trig conc 0 ok Thermo Fisher Scientific Model 146i Instruction Manual B-13...
Page 292: Diagnostics
1 params gas A span 1 ozon 3 perm 1 photo internal event status This command reports the current event that is being executed 1-32. A 0 response indicates no event is currently running. Send: event status Receive: event status 1 B-14 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 293 If temperature compensation is off, a temperature of 0.0 °C is shown as the default temperature even though the actual internal temperature is 31.2 °C The example below shows that temperature compensation is on and that the internal temperature is 31.2 °C. Thermo Fisher Scientific Model 146i Instruction Manual B-15...
Page 294: Datalogging
Receive: list dout output index variable state 1 1 GAS BIT 1 open 2 2 GAS BIT 2 open 3 3 GAS BIT 3 open 4 4 SPAN BIT 1 open B-16 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 295 “flags” command. Send: lr11 Receive: lr11 11:00 12-12-05 flags C0012C9 conc 533.746 tgflo 25.000 agflo 26.689 tzflo 4975.000 azflo 4970.950 ttflo 5000.000 atflo 4997.640 pres 741.699 sum 2583 Thermo Fisher Scientific Model 146i Instruction Manual B-17...
Page 296 0.000 tzflo 1000.000 azflo 0.000 ttflo 1030.000 atflo 0.000 pres 0.000 12:00 12-15-05 flags C000000 conc 0.000 tgflo 30.000 agflo 0.000 tzflo 1000.000 azflo 0.000 ttflo 1030.000 atflo 0.000 pres 0.000 B-18 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 297: Table B-4. Record Output Formats
These commands report the layout (string indicating the data formats) for data that is sent out in response to the erec, lrec, srec, and related commands. For details on how to interpret the strings, see “Record Layout Definition” later in this appendix. Thermo Fisher Scientific Model 146i Instruction Manual B-19...
Page 298 These commands report the number of long and short records stored in the long and short records memory. The example below shows that 50 long records have been stored in the memory. Send: no of lrec Receive: no of lrec 50 recs B-20 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 299 The example below copies the current list of long records into the scratch pad. Send: set copy lrec to sp Receive: set copy lrec to sp ok Thermo Fisher Scientific Model 146i Instruction Manual B-21...
Page 300 10 ok stream time This command reports if the streaming data string will have a time stamp attached to it or not, according to Table B–5. Send: stream time Receive: stream time 0 B-22 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 301: Calibration
This command sets the photometer lamp setting to value, where value is a floating point number representing a percentage of the photometer lamp setting. The example below sets the photometer lamp to 10.0%. This command is only available if the photometer option is installed. Thermo Fisher Scientific Model 146i Instruction Manual B-23...
Page 302 The example below sets the O background to 15 ppb. This command is only available if the photometer option is installed. Send: set o3 bkg 15 Receive: set o3 bkg 15 ok B-24 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 303: Keys/Display
The example below sets the span concentration to 50 ppb. This command is only available if the photometer option is installed. Send: set sp conc 50 Receive: set sp conc 50 ok push button Keys/Display down enter help left Thermo Fisher Scientific Model 146i Instruction Manual B-25...
Page 304 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. B-26 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 305 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. Thermo Fisher Scientific Model 146i Instruction Manual B-27...
Page 306: Measurement Configuration
= | a | b | c | d | e | f | This command selects the gas at the level preset for manual. Send: sel gas a man Receive: sel gas a man ok B-28 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 307 Table B-7, which is used when the gas gas is selected. The example below shows that solenoid A is associated with gas A. Send: gas a solenoid Receive: gas a solenoid 1 Thermo Fisher Scientific Model 146i Instruction Manual B-29...
Page 308: Table B-7. Solenoid Number Values
This command reports the target span concentration for the specified gas gas and the span level spanindex. The concentration reported is in ppb. Send: gas a span conc 1 Receive: gas a span conc 1 123.45 B-30 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 309 Receive: gas a tank conc 123.45 set gas gas tank conc conc gas = | a | b | c | d | e | f | conc = float Thermo Fisher Scientific Model 146i Instruction Manual B-31...
Page 310 The example below shows that custom level 1 is 500 ppb. This command is only available if the ozonator and photometer options are installed and the photometer is configured for ozonator control mode. B-32 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 311 This command sets the ozone zero air flow for the ozone manual level to value, where value is a floating point in sccm. The set command is optional. This command is only available if the ozonator option is installed. Thermo Fisher Scientific Model 146i Instruction Manual B-33...
Page 312 This command selects preset permeation oven levels to index. This command is only available if the permeation oven option is installed. Send: sel perm 1 Receive: set perm 1 ok set o3 conc value B-34 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 313: Table B-8. Standard Ranges
Table B–8. The example below sets the O full-scale range to 2.0 ppm. Send: set range 5 Receive: set range 5 ok Table B–8. Standard Ranges Selection 0.05 Thermo Fisher Scientific Model 146i Instruction Manual B-35...
Page 314 This command reports the current span index, where 0 is zero air, 1-5 are pre-set span levels, and 6 is manual span level. Send: span index Receive: span index 1 set span index index index = 0-6 B-36 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 315: Hardware Configuration
This command sets the screen’s level of contrast, according to Table B–9. The example below sets the contrast level to 50%. Send: set contrast 5 Receive: set contrast 5 ok Table B–9. Contrast Levels Level Contrast Level Thermo Fisher Scientific Model 146i Instruction Manual B-37...
Page 316 The example below saves the parameters to FLASH memory. Send: set save params 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. B-38 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 317: Communications Configuration
0-255 inclusive, separated by “.”. Send: set addr gw 192.168.1.1 Receive: set addr gw 192.168.1.1 ok addr ip This command reports the IP address of the analyzer. Send: addr ip Receive: addr ip 192.168.1.200 Thermo Fisher Scientific Model 146i Instruction Manual B-39...
Page 318 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 below shows that DHCP is on. Send: dhcp Receive: dhcp on B-40 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 319: Table B-10. Reply Termination Formats
This command reports the host name string. Send: host name Receive: host name analyzer01 set host name string This command sets the host name string, where string is 1-13 alphanumeric characters. Thermo Fisher Scientific Model 146i Instruction Manual B-41...
Page 320 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. B-42 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 321: I/O Configuration
C-Link Protocol Commands I/O Configuration Send: program no Receive: program no iSeries 146i 01.00.00.100 set layout ack This command disables the stale layout/layout change indicator (‘*’) that is attached to each response if the layout has changed. Send: set layout ack...
Page 322: Table B-12. Analog Voltage Output Range Values
3 corresponding to action of “set background” mode with the active state being high. Send: din 1 Receive: din 1 3 SET BACKGROUND high set din channel index state B-44 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 323: Table B-13. Default Output Assignment
Voltage Output Not Used Not Used Not Used Voltage Output Not Used Not Used Not Used Voltage Output Not Used Not Used Not Used Voltage Output Not Used Not Used Not Used Thermo Fisher Scientific Model 146i Instruction Manual B-45...
Page 324 “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”. B-46 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 325: Record Layout Definition
Normally, the specifier used to parse a particular datum from the input stream will be strongly related to the specifier used to display it (such as, all of the floating Thermo Fisher Scientific Model 146i Instruction Manual B-47...
Page 326: 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. B-48 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 327: Format Specifier For Front-Panel 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'. Thermo Fisher Scientific Model 146i Instruction Manual B-49...
Page 328 The number of the option selected is used as an index into the translation table to generate an output string. N—Indicates a button which only sends the subsequent command to the instrument. No user-prompting happens. B-50 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 329 This is a line which appears slightly indented, the title is again 'NO', and the value the twenty-first element of the data response, interpreted as a floating-point number. There is a no-translation button which creates a Thermo Fisher Scientific Model 146i Instruction Manual B-51...
Page 330 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. B-52 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 331: Appendix Cmodbus Protocol
This is achieved by using the supported MODBUS commands listed below. For details of the Model 146i MODBUS Protocol specification, see the following topics: “Serial Communication Parameters”...
Page 332: Tcp Communication Parameters
0x00 to 0xFF (Passed back in response) A Slave address is not required in MODBUS over TCP/IP because the higher-level protocols include device addressing. The unit identifier is not used by the instrument. Model 146i Instruction Manual Thermo Fisher Scientific...
Page 333: Function Codes
Status is indicated as 1 = Active (on) and 0 – Inactive (off). The LSB of the first data byte contains the output addressed in the query. The other outputs follow toward the high end of this byte, and from low order to Thermo Fisher Scientific Model 146i Instruction Manual...
Page 334 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 146i Instruction Manual Thermo Fisher Scientific...
Page 335 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 146i Instruction Manual...
Page 336 Register value Lo (10) 0x2B Register value Hi (11) 0x00 Register value Lo (11) 0x00 Register value Hi (12) 0x00 Register value Lo (12) 0x64 Register value Hi (13) 0x00 Register value Lo (13) 0x64 Model 146i Instruction Manual Thermo Fisher Scientific...
Page 337 1 Byte 01=Illegal Function, 02=Illegal Address, 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 Thermo Fisher Scientific Model 146i Instruction Manual...
Page 338: Modbus Commands Supported
Output Value Lo MODBUS Commands The following Table C–1 through Table C–3 lists the MODBUS commands supported for the Model 146i. Supported Table C–1. Read Coils for 146i Coil Number Status GAS BIT 1 GAS BIT 2 GAS BIT 3...
Page 339: Table C-2. Read Registers For 146I
GEN ALARM AMBIENT TEMP O3 LAMP TEMP PERM GAS TEMP PRESSURE PHOT BENCH TEMP PHOT LAMP TEMP PHOT INTENSITY O3 LEVEL Table C–2. Read Registers for 146i Register Number Variable 40001&40002 GAS CONC 40003&40004 TARGET GFLOW 40005&40006 ACTUAL GFLOW 40007&40008 TARGET ZFLOW 40009&40010...
Page 340: Table C-3. Write Coils For 146I
ANALOG 4 40039&40040 ANALOG 5 40041&40042 ANALOG 6 40043&40044 ANALOG 7 40045&40046 ANALOG 8 Table C–3. Write Coils for 146i Coil Number Action GAS BIT 1 GAS BIT 2 GAS BIT 3 SPAN BIT 1 SPAN BIT 2 SPAN BIT 3...

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