Page 1 Model 48i Trace Level-Enhanced Instruction Manual Gas Filter Correlation CO Analyzer Part Number 102948-00 25Jul2017...
Page 2 © 2007 Thermo Fisher Scientific Inc. All rights reserved. Specifications, terms and pricing are subject to change. Not all products are available in all countries. Please consult your local sales representative for details. Thermo Fisher Scientific Air Quality Instruments 27 Forge Parkway Franklin, MA 02038 1-508-520-0430 www.thermo.com/aqi...
Page 3: Weee Compliance
WEEE Compliance This product is required to comply with the European Union’s Waste Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is marked with the following symbol: Thermo Fisher Scientific has contracted with one or more recycling/disposal companies in each EU Member State, and this product should be disposed of or recycled through them.
Page 5: About This Manual
“C-Link Protocol Commands” provides a description of ● the C-Link protocol commands that can be used to remotely control an analyzer using a host device such as a PC or datalogger. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 6 The hazard or unsafe practice could result in minor to ▲ moderate personal injury if the warning is ignored. Equipment Damage The hazard or unsafe practice could result in property ▲ damage if the warning is ignored. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 7 The service procedures in this manual are restricted to ▲ qualified service personnel only. The Model 48i Trace Level-Enhanced is supplied with a three-wire grounding cord. Under no circumstances ▲ should this grounding system be defeated.
Page 8 Service is available from exclusive distributors worldwide. Contact one of the phone numbers below for product support and technical information or visit us on the web at www.thermo.com/aqi. 1-866-282-0430 Toll Free 1-508-520-0430 International Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 9: Table Of Contents
Calibration Factors Menu ..............3-16 CO Background ................3-17 CO Coefficient ................3-18 Reset User Calibration Default ............3-18 Calibration Menu ................3-19 Calibrate CO Background .............. 3-19 Calibrate CO Coefficient ..............3-20 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 10 Netmask ..................3-38 Default Gateway ................. 3-39 Host Name ................. 3-39 I/O Configuration ................3-39 Output Relay Settings ..............3-40 Logic State .................. 3-40 Instrument State ................. 3-41 Alarms ..................3-41 vi Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 11 Contact Information ..............3-60 Alarms Menu ..................3-61 Internal Temperature ..............3-61 Min and Max Internal Temperature Limits ......... 3-62 Bench Temperature ................ 3-62 Min and Max Bench Temperature Limits ........3-63 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 12 Analog Output Calibrate Full-Scale ..........3-81 Analog Input Calibration ............... 3-81 Analog Input Calibrate Zero ............3-82 Analog Input Calibrate Full-Scale ..........3-82 Dilution Ratio ................3-82 Display Pixel Test ................3-83 viii Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 13 Automatic Zero and Span Adjustment ..........4-14 References ..................4-15 Chapter 5 Preventive Maintenance ................. 5-1 Safety Precautions ................5-1 Replacement Parts ................5-2 Cleaning the Outside Case ..............5-2 Cleaning the Optics ................5-2 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 14 Analog Output Testing ..............7-27 Analog Output Calibration ............... 7-29 Analog Input Calibration ..............7-30 Calibrating the Input Channels to Zero Volts ........ 7-30 Calibrating the Input Channels to Full-Scale ......... 7-31 x Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 15 Front Panel Connector Board ............8-7 I/O Components ................. 8-8 Analog Voltage Outputs ..............8-8 Analog Current Outputs (Optional) ..........8-8 Analog Voltage Inputs (Optional) ............ 8-9 Digital Relay Outputs ..............8-9 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 16 Format Specifier for Front-Panel Layout ........B-42 Text .................... B-43 Value String ................B-43 Value Source ................B-43 Alarm Information ..............B-43 Translation Table ................ B-44 Selection Table ................B-44 Button Designator............... B-44 Examples ..................B-45 xii Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 17 Data Sampling/Data Query Command (DA) ........D-4 Measurements reported in response to DA command ..... D-6 Single Range Mode ..............D-6 Dual/Auto Range Mode ............... D-6 Operating and Error Status ............. D-6 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual xiii...
Page 18 Contents xiv Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 19 Figure 2–1. Remove the Packing Material ............2-2 Figure 2–2. Removing the Shipping Screws ............2-2 Figure 2–3. Model 48i Trace Level-Enhanced Rear Panel ......... 2-3 Figure 2–4. Atmospheric Dump Bypass Plumbing ..........2-4 Figure 2–5. I/O Terminal Board Views ............... 2-6 Figure 2–6.
Page 20 Figure 9–1. Rack Mount Option Assembly ............9-4 Figure 9–2. Bench Mounting ................9-5 Figure 9–3. EIA Rack Mounting ................9-6 Figure 9–4. Retrofit Rack Mounting ..............9-7 Figure B–1. Flags ....................B-11 xvi Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 21 Table 6–9. Digital Output Board Connector Pin Descriptions ......6-21 Table 6–10. Pre-amp Board Connector Pin Descriptions ......... 6-23 Table 7–1. Model 48i Trace Level-Enhanced Replacement Parts ..... 7-4 Table 7–2. Model 48i Trace Level-Enhanced Cables ......... 7-5 Table 7–3. External Device Connection Components ........7-6 Table 7–4.
Page 22 Table C–2. Read Registers for 48i Trace Level-Enhanced ......... C-9 Table C–3. Write Coils for 48i Trace Level-Enhanced ........C-10 Table D–1. Operating Status for Model 48i Trace Level-Enhanced ....D-7 Table D–2. Error Status for Model 48i Trace Level-Enhanced ......D-7...
Page 23: Chapter 1 Introduction
Chapter 1 Introduction The Model 48i Trace Level-Enhanced Analyzer measures CO concentration using Gas Filter Correlation (GFC). The Model 48i Trace Level-Enhanced combines proven detection technology, easy to use menu- driven software, and advanced diagnostics to offer unsurpassed flexibility and reliability. The Model 48i Trace Level-Enhanced has the following...
Page 24: Principle Of Operation
1000 ppm. The sample is drawn into the Model 48i Trace Level-Enhanced through the sample bulkhead, as shown in Figure 1-1. The sample flows through the optical bench.
Page 25: Specifications
Figure 1–1. Model 48i Trace Level-Enhanced Specifications Table 1–1 lists the specifications for the Model 48i Trace Level-Enhanced. Table 1–1. Model 48i Trace Level-Enhanced Specifications Preset ranges 0-1, 2, 5, 10, 20, 50, 100, 200, 500, 1000 ppm or mg/m...
Page 26 RJ45 connector for 10Mbs Ethernet connection, static or dynamic TCP/IP addressing *In non-condensing environments. Standard specifications cannot be maintained for sample concentrations over 1,000 ppm. Performance specifications based on operation with –30 °C. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 27: Chapter 2 Installation
Equipment Damage Do not attempt to lift the instrument by the cover or other external fittings. ▲ Unpacking and The Model 48i Trace Level-Enhanced is shipped complete in one container. If there is obvious damage to the shipping container when you Inspection receive the instrument, notify the carrier immediately and hold for inspection.
Page 28: Figure 2-1. Remove The Packing Material
Figure 2–1. Remove the Packing Material 4. Remove the three shipping screws from the pump (Figure 2–2). Shipping Screws (3) Figure 2–2. Removing the Shipping Screws 5. Check for possible damage during shipment. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 29: Setup Procedure
OD of 1/4-inch and a minimum ID of 1/8-inch. The length of the tubing should be less than 10 feet. Figure 2–3. Model 48i Trace Level-Enhanced Rear Panel Note Gas must be delivered to the instrument free of particulates. It may be necessary to use the Teflon particulate filter as described in “Teflon...
Page 30: Figure 2-4. Atmospheric Dump Bypass Plumbing
4. Connect a suitable recording device to the rear panel connector. For detailed information about connecting to the instrument, refer to: Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 31: Connecting External Devices
Testing” on page 7-27. 5. Plug the instrument into an outlet of the appropriate voltage and frequency. WARNING The Model 48i Trace Level-Enhanced is supplied with a three- wire grounding cord. Under no circumstances should this grounding system be defeated.
Page 32: Figure 2-5. I/O Terminal Board Views
Power_Fail_NC Analog ground Power_Fail_COM Analog2 Power_Fail_NO Analog ground TTL_Input1 Analog3 TTL_Input2 Analog ground TTL_Input3 Analog4 TTL_Input4 Analog ground Digital ground Analog5 TTL_Input5 Analog ground TTL_Input6 Analog6 TTL_Input7 Analog ground Digital ground Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 33: Figure 2-6. D/O Terminal Board Views
Table 2–2. D/O Terminal Board Pin Descriptions Signal Description Signal Description Relay1_ContactA Relay7_ContactA Relay1_ContactB Relay7_ContactB Relay2_ContactA Relay8_ContactA Relay2_ContactB Relay8_ContactB Relay3_ContactA Relay9_ContactA Relay3_ContactB Relay9_ContactB Relay4_ContactA Relay10_ContactA Relay4_ContactB Relay10_ContactB Relay5_ContactA Solenoid_Drive_Output1 Relay5_ContactB +24V Relay6_ContactA Solenoid_Drive_Output2 Relay6_ContactB +24V Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 34: Figure 2-7. 25-Pin Terminal Board Views
Signal Description IOut1 Analog_In1 Isolated ground Analog_In2 IOut2 Analog_In3 Isolated ground GNDD IOut3 Analog_In4 Isolated ground Analog_In5 IOut4 Analog_In6 Isolated ground GNDD IOut5 Analog_In7 Isolated ground Analog_In8 IOut6 GNDD Isolated ground GNDD Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 35 Installation Connecting External Devices Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 36: Startup
3. Set instrument parameters such as operating ranges and averaging times to appropriate settings. For more information about instrument parameters, see the “Operation” chapter. 4. Before beginning the actual monitoring, perform a multipoint calibration as described in the “Calibration” chapter. 2-10 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 37: Chapter 3 Operation
Some menus contain more items than can be displayed at one time. For these menus, use to move the cursor up and down to each item. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 38: Pushbuttons
If the liquid crystal contacts your skin or clothes, wash it off immediately using soap and water. ▲ Pushbuttons The Pushbuttons allow the user to traverse the various screens/menus. Figure 3–2. Front Panel Pushbuttons Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 39: Soft Keys
Press followed by the selected soft key within 1 second of pressing the right-arrow key. The edit soft key prompt will be displayed for configuration for the new label. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 40: Software Overview
0123456789 ./- SAVE RANGE DIAGS ALARM Software The Model 48i Trace Level-Enhanced utilizes the menu-driven software as illustrated by the flowchart in Figure 3–3. The Power-Up screen, shown at Overview the top of the flowchart, is displayed each time the instrument is turned on.
Page 41: Figure 3-3. Flowchart Of Menu-Driven Software
Operation Software Overview Figure 3–3. Flowchart of Menu-Driven Software Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 42: Power-Up Screen
Operation Software Overview Power-Up Screen The Power-Up screen is displayed on power up of the Model 48i Trace Level-Enhanced. 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 displays the CO concentration.
Page 43: Main Menu
Run ● screen. XXLO WCONCENTRATIONXXLO 15.8 PPM xSAMPLE 12:34 ALARMx MAIN MENU: >RANGE AVERAGING TIME CALIBRATION FACTORS CALIBRATION INSTRUMENT CONTROLS DIAGNOSTICS  ALARMS RANGE DIAGS ALARM SERVICE PASSWORD Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 44: Range Menu
Table 3–2 for channels and pin connections. Single range mode may be selected from the “Range Mode Select” on page 3-71. Figure 3–4. Pin-Out of Rear Panel Connector in Single Range Mode Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 45: Dual Range Mode
By default, in the dual range mode, the analog outputs are arranged on the rear panel connector as shown in Figure 3–5. See Table 3–3 for channels and pin connections. Dual range mode may be selected from the “Range Mode Select” on page 3-71. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 46: Auto Range Mode
When the low range is active, the status output is at 0 volts. When the high range is active, the status output is at half of full-scale. 3-10 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 47: Figure 3-6. Analog Output In Auto Range Mode
▲ Figure 3–6. Analog Output in Auto Range Mode Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-11...
Page 48: Figure 3-7. Pin-Out Of Rear Connector In Auto Range Mode
2, 4, 6, 8, 10, 12 Signal Ground Note All channels are user definable. If any customization has been made to the analog output configuration, the default selections my not apply. ▲ 3-12 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 49: Gas Units
CO range screen in single mode. For more information about the dual and auto range modes, see “Single Range Mode”, “Dual Range Mode”, and “Auto Range Mode” earlier in this chapter. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-13...
Page 50: Set Custom Ranges
Custom ranges are user-defined ranges. In the ppm or mg/m mode, any value between 1 and 1000 ppm can be specified as a range. In the Main Menu, choose Range > Set Custom Ranges. ● 3-14 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 51: Custom Ranges
The Averaging Time screen for the single range mode is shown below. In the dual and auto range modes, an Averaging Time Menu is displayed before the averaging time screens. This menu is needed because the dual Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-15...
Page 52: Calibration Factors Menu
In the Main Menu, choose Calibration Factors. ● CALIBRATION FACTORS: CALIBRATION FACTORS: >BKG >BKG COEF 1.000 LO COEF 1.000 RESET USER CAL DEFAULTS HI COEF 1.000 RESET USER CAL DEFAULTS RANGE DIAGS ALARM RANGE DIAGS ALARM 3-16 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 53: Co Background
CO reading to 0 ppm and store the background correction of 1.4 ppm. In the Main Menu, choose Calibration Factors > Bkg. ● CO BACKGROUND: SET BKG TO:  INC/DEC  SAVE VALUE RANGE DIAGS ALARM Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-17...
Page 54: Co Coefficient
The Reset User Calibration Default screen allows the user to reset the calibration configuration values to factory defaults. Default In the Main Menu, choose Service > Calibration Factors > Reset User ● Cal Defaults. 3-18 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 55: Calibration Menu
To be most accurate, use the 300-second averaging time. For more information about calibration, see Chapter 4, “Calibration”. In the Main Menu, choose Calibration > Cal CO Background. ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-19...
Page 56: Calibrate Co Coefficient
Calibration Reset are toggle items that change between yes or no when selected, and displayed if auto calibration is installed. In the Main Menu, choose Calibration > Zero/Span Check. ● 3-20 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 57: Next Time
Periods between 0 and 999 hours are acceptable. To turn the zero/span check off, set the period to 0. In the Main Menu, choose Calibration > Zero/Span Check > Period ● Hours. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-21...
Page 58: Zero/Span/Purge Duration Minutes
The following averaging times are available: 1, 2, 5, 10, 20, 30, 60, 90, 120, 180, 240, and 300 seconds. In the Main Menu, choose Calibration > Zero/Span Check > ● Zero/Span Avg Sec. 3-22 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 59: Zero/Span Averaging Time
In the Main Menu, choose Instrument Controls. ● INSTRUMENT CONTROLS: >DATALOGGING SETTINGS COMMUNICATION SETTINGS I/O CONFIGURATION TEMPERATURE COMPENSATION PRESSURE COMPENSATION SCREEN CONTRAST  SERVICE MODE RANGE DIAGS ALARM DATE/TIME Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-23...
Page 60: Datalogging Settings
In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Select SREC or LREC > View Logged Data. 3-24 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 61: Number Of Records
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”. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-25...
Page 62: Date And Time
Choices are Concentrations, Other Measurements, and Analog Inputs (if the I/O expansion board is installed). This is a temporary list of items for 3-26 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 63: Choose Item Type
To change the selected record format and erase record log file data, see “Commit Content” below. Range status is visible only in auto range mode. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-27...
Page 64 “<--” after it. Note that at this point, pressing indicates that these are proposed changes as opposed to implemented changes. To change the selected record format and erase record log file data, see “Commit Content” below. 3-28 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 65: Commit Content
For more information about selecting the analog output signal group choices, see “Select Content” above. In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Reset to Default Content. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-29...
Page 66: Configure Datalogging
In the Main Menu, choose Instrument Controls > Datalogging Settings ● > Configure Datalogging > Logging Period Min. SET PERIOD FOR SREC: CURRENTLY: 60 MIN SET TO: OFF MIN  CHANGE VALUE  SAVE RANGE DIAGS ALARM 3-30 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 67: Data Treatment
CHANGE VALUE  SAVE RANGE DIAGS ALARM Communication The Communication Settings menu is used with communications control and configuration. Settings In the Main Menu, choose Instrument Controls > Communication ● Settings. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-31...
Page 68: Baud Rate
ID number if two or more of the same instrument are connected to one computer. Valid Instrument ID numbers are from 0 to 127. The Model 48i Trace Level-Enhanced has a default Instrument ID of 48. For more information about the Instrument ID, see Appendix B “C-...
Page 69 Note Add Labels and Prepend Timestamp are toggle items that change between yes or o when selected. ▲ In the Main Menu, choose Instrument Controls > Communication ● Settings > Streaming Data Config. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-33...
Page 70: Choose Item Signal
Group choices are Concentrations, Other Measurements, and Analog Inputs (if the I/O expansion board is installed). In the Main Menu, choose Instrument Controls > Communication ● Settings > Streaming Data Config > Item 1-8. 3-34 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 71 “<--” after it. In dual or auto range mode, “HI” or “LO” is displayed to indicate high or low range concentrations. In the Main Menu, choose Instrument Controls > Communication ● Settings > Streaming Data Config > Select Item > Other Measurements. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-35...
Page 72 Equipment Damage Disconnect the serial cable before changing RS-232 and RS-485 selection to prevent damage to the connected equipment. ▲ In the Main Menu, choose Instrument Controls > Communication ● Settings > RS-232/RS-485 Selection. 3-36 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 73: Rs-232/Rs-485 Selection
The instrument’s power must be cycled for a change to this parameter to take affect. In the Main Menu, choose Instrument Controls > Communication ● Settings > TCP/IP Settings > Use DCHP. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-37...
Page 74: Ip Address
In the Main Menu, choose Instrument Controls > Communication ● Settings > TCP/IP Settings > Netmask. NETMASK: CURRENT: 255.255.255.0 SET TO: 255.255.255.0 0  MOVE CURSOR  CHANGE VALUE  SAVE VALUE RANGE DIAGS ALARM 3-38 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 75: Default Gateway
I/O system. The analog input configuration is displayed only if the I/O expansion board option is installed. Note The digital outputs may take up to one second after the assigned state occurs to show up on the outputs. ▲ Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-39...
Page 76: Output Relay Settings
The Logic State screen is used to change the I/O relay to either normally open or normally closed. Press to toggle and set the logic state open or closed. ● OUTPUT RELAY SETUP: >LOGIC STATE OPEN INSTRUMENT STATE RANGE DIAGS ALARM 3-40 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 77 INT TEMP BENCH TEMP PRESSURE  RANGE DIAGS ALARM SAMPLE FLOW INTENSITY MOTOR SPEED BIAS VOLTAGE MB STATUS MIB STATUS I/O BD STATUS CONC ALARM <-- ZERO CHK/CAL SPAN CHK/CAL Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-41...
Page 78: Non-Alarm
The Logic State screen is used to change the I/O relay to either normally open or normally closed. The default state is open, which indicates that a relay connected between the digital input pin and ground is normally open 3-42 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 79: Instrument State
1-6 (if the I/O expansion board option is installed). Configuration choices include selecting range, setting minimum/maximum values, and choosing signal to output. Note The current outputs are displayed only if the I/O expansion board option is installed. ▲  Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-43...
Page 80: Select Output Range
Range Status is visible only in auto range mode. The minimum and maximum output value screens function the same way. The example below shows the set minimum value screen. 3-44 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 81: Table 3-6. Analog Output Zero To Full-Scale Table
Measurements, and Analog Inputs (if the I/O expansion board option is installed). This allows the user to select the output signal to the selected output channel. In dual or auto range mode, “HI” or “LO” is displayed to Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-45...
Page 82: Table 3-7. Signal Type Group Choices
(dual range only) Range Status Internal Temperature Analog Input 4 (auto range only) Bench Temperature Analog Input 5 Bench Pressure Analog Input 6 Sample Flow Analog Input 7 Intensity Analog Input 8 3-46 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 83: Analog Input Configuration
1 to 3 characters in length, and defaults to IN1 to IN8 (user input channel number). In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Input Config > Select Channel > Descriptor. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-47...
Page 84: Units
In the Main Menu, choose Instrument Controls > I/O Configuration > ● Analog Input Config > Select Channel > Decimal Places. DECIMAL PLACES: CURRENTLY: SET TO:  CHANGE VALUE  SAVE VALUE RANGE DIAGS ALARM 3-48 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 85: Number Of Table Points
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 Channel > Select Point > Volts. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-49...
Page 86: User Value
(measured by a thermistor on the bench). When temperature compensation is off, the display shows the factory standard temperature of 30 °C. In the Main Menu, choose Instrument Controls > Temperature ● Compensation. 3-50 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 87: Pressure Compensation
Values between 0 and 100% in increments of 10 are available. Changing the screen contrast may be necessary if the instrument is operated at extreme temperatures. In the Main Menu, choose Instrument Controls > Screen Contrast. ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-51...
Page 88: Service Mode
The Service Mode screen is used to turn the service mode on or off. The service mode locks out any remote actions and includes parameters and functions that are useful when making adjustments or diagnosing the Model 48i Trace Level-Enhanced. For more information about the service mode, see “Service Menu”...
Page 89: Diagnostics Menu
Prior to contacting the factory with any questions regarding the instrument, please note the product model and program version numbers. In the Main Menu, choose Diagnostics > Program Version. ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-53...
Page 90: Voltages
24.1 V -3.3 SUPPLY -3.3 V RANGE DIAGS ALARM Interface Board Voltages The Interface Board screen (read only) is used to display the current voltage readings on the interface board. 3-54 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 91: I/O Board Voltages
In the Main Menu, choose Diagnostics > Temperatures. ● TEMPERATURES: INTERNAL 34.6 BENCH 49.7 RANGE DIAGS ALARM Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-55...
Page 92: Pressure
1.00 and 1.18. A ratio outside may indicate that the filter wheel is dirty or the infrared source is degraded. In the Main Menu, choose Diagnostics > Sample/Ref Ratio. ● 3-56 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 93: Agc Intensity
The AGC Intensity screen (read only) displays the intensity (in Hertz) of the reference channel Automatic Gain Control (AGC) circuit. The AGC circuit optimizes the noise and resolution levels of the Model 48i Trace Level-Enhanced. The AGC intensity reading should be about 200000 Hertz.
Page 94: Analog Input Readings
In the Main Menu, choose Diagnostics > Digital Inputs. ● DIGITAL INPUTS: >INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 INPUT 7  RANGE DIAGS ALARM 3-58 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 95: Relay States
The example below shows the selected output state “ALL” is set to normal. In the Main Menu, choose Diagnostics > Test Analog Outputs > ALL, ● Voltage Channel 1-6, or Current Channel 1-6. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-59...
Page 96: Instrument Configuration
Contact Information The Contact Information screen displays the customer service information. In the Main Menu, choose Diagnostics > Contact Information. ● CONTACT INFORMATION: CALL CENTER: 508-520-0430 WEB: WWW.THERMO.COM RANGE DIAGS ALARM 3-60 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 97: Alarms Menu
The internal Temperature temperature in the Model 48i Trace Level-Enhanced is regulated by turning the fan on as the temperature gets too high and off as it gets too low. Acceptable alarm limits range from 38 to 43 °C. If the internal temperature reading goes beyond either the minimum or maximum alarm limit, an alarm is activated.
Page 98: Min And Max Internal Temperature Limits
The word “ALARM” appears in the Run screen and in the Main Menu. In the Main Menu, choose Alarms > Bench Temp. ● BENCH TEMPERATURE: ACTUAL 48.4 >MIN 40.0 59.0 RANGE DIAGS ALARM 3-62 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 99: Min And Max Bench Temperature Limits
The Minimum Pressure alarm limit screen is used to change the minimum Limits pressure alarm limit. The minimum and maximum pressure screens function the same way. In the Main Menu, choose Alarms > Pressure > Min or Max. ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-63...
Page 100: Sample Flow
In the Main Menu, choose Alarms > Sample Flow > Min or Max. ● SAMPLE FLOW: ACTUAL MIN: 0.300 LPM SET MIN TO: 0.400 LPM ?  INC/DEC  SAVE VALUE RANGE DIAGS ALARM 3-64 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 101: Bias Voltage
The word “ALARM” appears in the Run screen and in the Main Menu. In the Main Menu, choose Alarms > AGC Intensity. ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-65...
Page 102: Min And Max Agc Intensity Limits
DIAGS ALARM Zero and Span The Zero Span Check screen allows the user to view the status of the most recent zero check and set the maximum zero check offset. Check 3-66 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 103: Max Zero And Span Offset
In the Main Menu, choose Alarms > Zero or Span Autocal. ● ZERO AUTO CALIBRATION: ALARM: RESPONSE: RANGE DIAGS ALARM Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-67...
Page 104: Scrubber Gas Concentration
95 to 101 percent. If the scrubber efficiency 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 3-68 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 105: Min And Max Scrubber Efficiency Limits
The word “ALARM” appears in the Run screen and in the Main Menu. In the Main Menu, choose Alarms > Concentration. ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-69...
Page 106: Min Trigger Concentration
In the Main Menu, choose Alarms > Select Concentration > ● MinTrigger. MIN TRIG(CEILING/FLOOR): ACTUAL TRIGGER: CEILING SET TRIGGER TO: FLOOR ?  TOGGLE AND SAVE VALUE RANGE DIAGS ALARM 3-70 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 107: Service Menu
In the Main Menu, choose Service > Range Mode Select. ● SINGLE/DUAL/AUTO RANGE: CURRENTLY: SINGLE SET TO: DUAL ?  CHANGE VALUE  SAVE VALUE RANGE DIAGS ALARM Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-71...
Page 108: Pressure Calibration
In the Main Menu, choose Service > Pressure Calibration > Zero. ● CALIBRATE PRESSURE ZERO: CURRENTLY: 10.0 mmHg SET TO: 0.0 mmHg CONNECT VACUUM PUMP AND  SAVE ZERO PRESSURE RANGE DIAGS ALARM 3-72 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 109: Calibrate Pressure Span
RANGE DIAGS ALARM Flow Calibration The Flow Calibration submenu is used to calibrate the flow sensor to zero, span, or restore factory default values. The flow calibration is visible only Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-73...
Page 110: Calibrate Flow Zero
Note An independent flow sensor is required to read the flow, then the operator enters the flow value on this screen to perform the calibration. ▲ In the Main Menu, choose Service > Flow Calibration > Span. ● 3-74 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 111: Calibrate Flow Span
0.90 to 1.20. Note This adjustment should only be performed by an instrument service technician. ▲ In the Main Menu, choose Service > Initial S/R Ratio. ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-75...
Page 112: Internal Set Temperature
Note This adjustment should only be performed by an instrument service technician. ▲ In the Main Menu, choose Service > Scrubber Test. ● 3-76 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 113: Multi-Point Calibration
The Calibrate Point 1 screen allows the user to view and set the selected calibration point. The calibrate 2 and calibrate 3 screens function the same way. In the Main Menu, choose Service > Multipoint Cal > Calibrate 1, 2 ● or 3. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-77...
Page 114 SET TO DEFAULTS RANGE DIAGS ALARM Preamp Board Calibration The Pre-amp Board Calibration screen is used to adjust the preamp board calibration parameters. The AGC circuitry is turned off while the preamp 3-78 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 115 6 current channels (if I/O expansion board option is installed) to Calibration calibrate, and allows the user to select the calibration action zero or span. The analog output calibration is visible only when the instrument is in Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-79...
Page 116 ● Channel > Calibrate Zero. ANALOG OUTPUT CAL: ZERO CONNECT METER TO OUTPUT! SELECTED OUTPUT: SET TO:   SAVE VALUE INC/DEC SET OUTPUT TO: 0.0 V RANGE DIAGS ALARM 3-80 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 117 In the Main Menu, choose Service > Analog Input Calibration. ● ANALOG INPUT CAL: >INPUT CHANNEL 1 INPUT CHANNEL 2 INPUT CHANNEL 3 INPUT CHANNEL 4 INPUT CHANNEL 5 INPUT CHANNEL 6 INPUT CHANNEL 7  RANGE DIAGS ALARM Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-81...
Page 118 Dilution Ratio The Dilution Ratio screen allows the user to view and set the dilution ratio. Acceptable values are 1–500: 1. The default is 1:1. When this value is set, 3-82 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 119 For more information on the service mode, see “Service Mode” earlier in the chapter. In the Main Menu, choose Service > Restore User Defaults. ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-83...
Page 120: Password Menu
The set password screen is shown if the instrument is unlocked and the password is set. In the Main Menu, choose Password > Set Password ● ENTER NEW PASSWORD: RANGXXXXXE ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 ./- SAVE RANGE DIAGS ALARM 3-84 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 121: Change Password
The Remove Password screen is used to erase the current password and disable password protection. The remove password screen is shown if the instrument is unlocked and the password set. In the Main Menu, choose Password > Remove Password ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 3-85...
Page 122: Unlock Instrument
The unlock instrument is shown if the instrument is locked. In the Main Menu, choose Password > Unlock Instrument ● ENTER NEW PASSWORD: RANGXXXXXE ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 ./- SAVE RANGE DIAGS ALARM 3-86 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 123: Chapter 4 Calibration
Chapter 4 Calibration This chapter describes the procedures for calibrating the Model 48i Trace Level-Enhanced (TLE) analyzer. The information described here is more than adequate to perform the calibration. However, if greater detail is needed, please refer to the Quality Assurance Handbook for Air Pollution...
Page 124: Equipment Required
Although the Model 48i Trace Level-Enhanced will provide high quality data without using an external multi-point calibration, it is a regulatory requirement in many cases.
Page 125: Compression
<0.01 ppm CO. In addition, the dilution air should be dry (Dew point < 10 C) and free of oil mist and dust particles. Since the Model 48i Trace Level-Enhanced is virtually interference free, it is not necessary to...
Page 126: Figure 4-1. Dilution System Schematic
25 °C and 760 mmHg, and that care should be exercised in correcting for water vapor content. Pressure Regulator for CO The regulator used must have a non-reactive diaphragm and internal parts, as well as a suitable delivery pressure. Standard Cylinder Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 127: Mixing Chamber
Calibration Gas System Internal Valve System In addition to the internal zero air scrubber, the Model 48i Trace Level- Enhanced is shipped standard with internal switching valves that provide the capability for fully automated calibration. The configuration of these valves is illustrated schematically in Figure 4-2.
Page 128: Figure 4-2. Internal Zero And Span Valve Plumbing
Depending on the type of calibration that will be performed, and the over- all design of the system, there are several possible options for connecting the instrument to the calibration system. The two most likely configurations are illustrated in Figures 4-3 and 4-4. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 129: Figure 4-3. Plumbing Configuration For Mulit-Point External Calibration
Figure 4–3. Plumbing Configuration for Mulit-Point External Calibration If a gas titration system will be used to deliver the calibration gases, the span control valve located inside the 48i Trace Level-Enhanced cannot be used to control the gas flows. In this arrangement, delivery of span gas will be controlled by an external system.
Page 130: Figure 4-4. Plumbing Configuration For Single-Point Internal Calibration
Figure 4–4. Plumbing Configuration for Single-Point Internal Calibration In this configuration, only one span concentration is utilized. However, the calibration process can be fully automated because the 48i Trace Level- Enhanced internal span valve controls the flow span gas. Whenever the instrument is switched to span mode (check or adjust) the internal valve will open and allow span gas to flow into the sampling system.
Page 131: Single Point Internal Calibration
CO concentration of the span gas cylinder. 3. If you have not already done so, verify that excess span gas is flowing out the “Span Out” bulkhead at 250 to 750 cc per minute. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 132: Multi-Point External Calibration
CO reading to zero. If a strip chart recorder is used to obtain a record of the analog output, it is recommended that the system be adjusted to obtain a zero trace at 4-10 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 133: Span Adjust
Generate several additional concentrations (at least five others are suggested) by decreasing F or increasing F . In each case, be sure the Standards total flow exceeds the analyzer's total flow demand. For each concentration Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 4-11...
Page 134: Calibration Curve
If the span gas has been connected appropriately, the Model 48i Trace Level-Enhanced’s internal CO scrubber and valve system allow the operator...
Page 135: Span Check
(URL) of the recorder. In this case, record the analyzer's response in % of scale as A , and compute the span error from the following equation: Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 4-13...
Page 136: Automatic Zero And Span Adjustment
This drift occurs primarily due to slight changes in environmental parameters, such as temperature. The enhanced trace level version of the 48i CO analyzer uses both hardware and software compensation to limit the impact of changes in the instrument’s environment.
Page 137: References
Secondary Standards for Flow Measurements”. Specific information on certification of concentration standards is given in EPA-600/R93/224, EPA Traceability Protocol for Assay and Certification of Gaseous Calibration Standards, 1993 Available from www.NTIS.gov (PB94130424). Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 4-15...
Page 139: Chapter 5 Preventive Maintenance
WARNING If the equipment is operated in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired Do not attempt to lift the instrument by the cover or other external fittings. ▲ Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 140: Replacement Parts
For more information about appropriate safety precautions, see the “Servicing” chapter. ▲ Use the following procedure to clean the mirrors. 2. Turn off power and disconnect power line. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 141: Capillary Cleaning Or Replacement
1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Remove the sample flow capillary from the inlet elbow fitting on the pump head and clean with a wire smaller than 0.018 diameter/or replace. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 142: Figure 5-1. Cleaning Or Replacing The Capillaries
After cleaning the optics, the IR light intensities remain below 100000 ● It is not necessary to recalibrate the Model 48i Trace Level-Enhanced after replacing the IR source since it is a ratio instrument, and replacing the IR source does not affect the calibration.
Page 143: Figure 5-2. Inspection And Cleaning The Fan
If the pump diaphragm is in good condition and the capillary not blocked, it should take less than one minute from the time the inlet is plugged to the time the reading below 250 mmHg is obtained. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 144: Leaks Across The Optional Zero/Span And Sample Solenoid Valves
1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Loosen the fittings and remove both lines going to the pump. 3. Remove the four screws from the top plate, remove top plate, flapper valve, and the bottom plate. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 145: Figure 5-3. 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. Perform the “Leak Test and Pump Check Out” on page 5-5. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 147: Safety Precautions
The troubleshooting guides presented in this chapter are designed to help isolate and identify instrument problems. Guides Table 6–1 provides troubleshooting information egarding power-up failures and indicates the checks that you should perform if you experience an instrument problem. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 148: Table 6-1. Troubleshooting - Power-Up Failures
Unplug power cables to motherboard, measurement interface board and rear panel to determine where the fault is. Display failure If possible, check instrument function through RS-232 or Ethernet. Contact Thermo Fisher Scientific Service Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 149: Table 6-2. Troubleshooting - Calibration Failures
Diagnostics screen. Use an independent flow meter to check flows at the sample inlet and exhaust bulkheads (they should match). Perform a leak test, as described in the “Preventive Maintenance” chapter. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 150 Diagnostics screen. Use an independent flow meter to check flows at the sample inlet and exhaust bulkheads (they should match). Perform a leak test, as described in the “Preventive Maintenance” chapter. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 151: Table 6-3. Troubleshooting - Measurement Failures
Maintenance” chapter. Check the external plumbing for leaks or other problems. Instrument is not properly Go to the Calibration Factors calibrated. menu and verify that the Background and Coefficient are set appropriately. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 152 Recorder noise Replace or repair recorder. Sample CO concentration Run instrument on a span CO varying source - if quiet, there is no malfunction. Foreign material in optical Clean optical bench. bench Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 153: Table 6-4. Troubleshooting - Alarm Messages
Disconnect sample particulate filter from the sample bulkhead, if flow increases, replace the filter. Alarm - Bias voltage Defective measurement Replace measurement interface board interface board. Defective pre-amp board Replace pre-amp board. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 154 Check that all internal cables connected properly are connected properly. Alarm - Interface Status Recycle AC power to Board is defective Alarm - I/O Exp Status instrument. If still alarming, change board. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 155: Figure 6-1. Board-Level Connection Diagram - Common Electronics
2 Pin FRONT PANEL POWER SW TR ANSF O R ME R 3 Pin (90V AC or 240V AC O P TIO NS) Figure 6–1. Board-Level Connection Diagram - Common Electronics Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 156: Figure 6-2. Board-Level Connection Diagram - Measurement System
2 Pin 6 Pin O2 CONNECTORS (Not Used) 3 Pin BENCH HEATER AND THERM. 4 Pin 3 Pin AC PUMP 3 Pin Figure 6–2. Board-Level Connection Diagram - Measurement System 6-10 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 157: Table 6-5. Motherboard Connector Pin Descriptions
Ethernet Output (-) Ethernet Input (+) Ethernet Input (-) INTF DATA Ground +RS485 to Interface Board -RS485 to Interface Board 10-BASE-T Ethernet Output (+) Ethernet Output (-) Ethernet Input (+) Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 6-11...
Page 158 TTL Input 2 Ground TTL Input 5 TTL Input 7 TTL Input 8 TTL Input 10 Ground TTL Input 13 TTL Input 15 Ground Analog Voltage 1 Analog Voltage 3 6-12 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 159 Analog Voltage 2 Analog Voltage 4 Ground Analog Voltage 6 Ground SER EN Serial Enable Jumper +3.3V 24V IN +24V Ground DIGITAL I/O +24V +24V Ground Ground Ground SPI Reset SPI Input Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 6-13...
Page 160 LLP – LCD Signal LFLM – LCD Signal LD4 – LCD Signal LD0 – LCD Signal LD5 – LCD Signal LD1 – LCD Signal LD6 – LCD Signal LD2 – LCD Signal 6-14 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 161 Serial Port 1 TX (-RS485 OUT) Ground Serial Port 1 RTS (+RS485 OUT) Serial Port 1 CTS (+RS485 IN) RS232/RS485:B P1:B Serial Port 2 RX (-RS485 IN) Serial Port 2 TX (-RS485 OUT) Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 6-15...
Page 162: Table 6-6. Measurement Interface Board Connector Pin Descriptions
-RS485 from Motherboard PREAMP BD Preamp Signal Input Ground for Shield Ground SPI – Data Out SPI - CLK SPI - CS +15V +18V for IR Source Ground -100V -100V Return 6-16 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 163 AC-BENCH HEATER 24V IN +24V Ground +24V Ground AC PUMP AC-HOT AC-NEUT AC-Ground Z/S SOL. +24V Zero/Span Solenoid Control SAMPLE SOL. +24V Sample Solenoid Control SPAN1 SOL. +24V Converter Solenoid Control Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 6-17...
Page 164: Table 6-7. Front Panel Board Connector Pin Diagram
Table 6–7. Front Panel Board Connector Pin Diagram Connector Reference Signal Description Label Designator MOTHERBOARD Ground Ground LCLK – LCD Signal Ground Ground LLP – LCD Signal LFLM – LCD Signal LD4 – LCD Signal 6-18 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 165 LCD DATA LD0_5V – LCD Signal LD1_5V – LCD Signal LD2_5V – LCD Signal LD3_5V – LCD Signal LCD_ONOFF_5V – LCD Signal LFLM_5V – LCD Signal LLP_5V – LCD Signal Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 6-19...
Page 166: Table 6-8. I/O Expansion Board (Optional) Connector Pin Descriptions
Analog Voltage Input 2 Analog Voltage Input 3 Ground Analog Voltage Input 4 Analog Voltage Input 5 Analog Voltage Input 6 Ground Analog Voltage Input 7 Analog Voltage Input 8 Ground 6-20 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 167: Table 6-9. Digital Output Board Connector Pin Descriptions
+RS485 to Motherboard -RS485 to Motherboard Table 6–9. Digital Output Board Connector Pin Descriptions Connector Reference Signal Description Label Designator MOTHER BD +24V +24V Ground Ground Ground SPI Reset SPI Input Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 6-21...
Page 168 Relay 3 Contact b Relay 4 Contact b Relay 5 Contact b Relay 6 Contact b Relay 7 Contact b Relay 8 Contact b Relay 9 Contact b Relay 10 Contact b +24V 6-22 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 169: Table 6-10. Pre-Amp Board Connector Pin Descriptions
SPI - CS +15V +18V for IR Source -100V +18V for IR Source IR Source Return IR Detector Return IR Detector Cooler + IR Detector Cooler - IR Detector IR Detector Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 6-23...
Page 170: Service Locations
For additional assistance, service is available from exclusive distributors worldwide. Contact one of the phone numbers below for product support Locations and technical information or visit us on the web at www.thermo.com/aqi. 1-866-282-0430 Toll Free 1-508-520-0430 International 6-24 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 171: Chapter 7 Servicing
Chapter 7 Servicing This chapter explains how to replace the Model 48i Trace Level-Enhanced 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 “Operation” chapter in this manual.
Page 172: Safety Precautions
▲ CAUTION Carefully observe the instructions in each procedure. ▲ Equipment Damage Some internal components can be damaged by small amounts of static electricity. A properly ground antistatic wrist strap must Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 173: Figure 7-1. Properly Grounded Antistatic Wrist Strap
Service Mode 1. At the Main Menu, press to scroll to Instrument Controls > press > to scroll to Service Mode > and press The Service Mode screen appears. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 174: Table 7-1. Model 48I Trace Level-Enhanced Replacement Parts
3. Press > to return to the Main Menu. 4. Return to the procedure. Replacement Table 7–1 lists the replacement parts for the Model 48i Trace Level- Enhanced major subassemblies. Refer to Table 7–2 to identify the Parts List component location.
Page 175: Table 7-2. Model 48I Trace Level-Enhanced Cables
Ambient Temperature Sensor Assembly 102418-00 CO Scrubber Cable List Table 7–2 describes the Model 48i Trace Level-Enhanced cables. See the “Troubleshooting” chapter for associated connection diagrams and board connector pin descriptions. Table 7–2. Model 48i Trace Level-Enhanced Cables Part Number...
Page 176: Figure 7-2. Component Layout
Optical Bench Detector Assy and Pre-Amp Sample/Zero Scrubber I/O Expansion Board (Opt) Front Panel Digital Output Board Front Panel Board Transformer Power Supply Motherboard Measurement Interface Board Figure 7–2. Component Layout Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 177: Figure 7-3. Removing The Measurement Bench And Lowering The Partition
Equipment Damage Some internal components can be damaged by small amounts of static electricity. A properly ground antistatic wrist strap must be worn while handling any internal component. ▲ 1. Turn instrument OFF and unplug the power cord. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 178: Fuse Replacement
250VAC, 1.60 Amp, SlowBlow (for 220-240VAC models) 1. Turn instrument OFF and unplug the power cord. 2. Remove fuse drawer, located on the AC power connector. 3. If either fuse is blown, replace both fuses. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 179: Figure 7-4. Replacing The Rear Panel Fan
4. Remove the four fan mounting screws and remove the fan. 5. Install a new fan following the previous steps in reverse. Mounting Screws (4) Filter Fan Guard Figure 7–4. Replacing the Rear Panel Fan Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 180: Figure 7-5. Replacing The Bench Fan
4. Remove the four fan mounting screws holding the fan brackets to fan. 5. Install a new fan following the previous steps in reverse. Bench Mounting Screws (4) Fan Mounting Screws (4) Figure 7–5. Replacing the Bench Fan 7-10 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 181: Ir Source Replacement
4. Loosen both clamp screws from the IR source mounting posts and remove IR source. 5. Install a new IR source by following the previous steps in reverse. Ensure that the IR source element is evenly spaced between the mounting posts. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-11...
Page 182: Figure 7-6. Replacing The Ir Source
A properly grounded antistatic wrist strap must be worn while handling any internal component. ▲ 1. Turn instrument OFF, unplug the power cord, and remove the cover. 7-12 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 183: Figure 7-7. Removing The Motor
The Initial S/R Ratio screen appears. Note If Service Mode is not displayed, refer to “Accessing the Service Mode” on page 7-3, then return to the beginning of this step. ▲ Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-13...
Page 184: Chopper Motor Replacement
5. Install the filter wheel on the motor shaft, make sure that the set screw seats on the flat of the motor shaft, and tighten the set screw. 6. Calibrate the instrument. Refer to the “Calibration” chapter in this manual. 7-14 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 185: Figure 7-8. Replacing The Optical Bench
5. Replace the optical bench by following the previous steps in reverse. 6. Calibrate the instrument. Refer to the “Calibration” chapter in this manual. Screws (4) Shock Mounts (8) Figure 7–8. Replacing the Optical Bench Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-15...
Page 186: Optical Switch Replacement
4. Install the new optical switch by following the previous steps in reverse. 5. Calibrate the instrument. Refer to the “Calibration” chapter in this manual. 7-16 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 187: Figure 7-9. Replacing The Optical Switch (Inverted View)
▲ 1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Remove the optical bench following the “Optical Bench Replacement” procedure in this chapter. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-17...
Page 188: Detector/Preamplifier Assembly Replacement
1. Turn instrument OFF, unplug the power cord, and remove the cover. 2. Disconnect the cable from the PREAMP connector on the measurement interface board and disconnect the two wires from the top of the chopper motor plate. 7-18 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 189: Figure 7-10. Replacing The Detector/Preamplifier Assembly
S/R ratio to the value of the current ratio and press to store the value. The initial S/R ratio should be between 1.14 and 1.18. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-19...
Page 190: Preamp Board Calibration
A properly ground antistatic wrist strap must be worn while handling any internal component. ▲ 1. Turn instrument OFF, unplug the power cord, and remove the cover. 7-20 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 191: Figure 7-11. Replacing The Pump
A properly ground antistatic wrist strap must be worn while handling any internal component. ▲ 1. Turn instrument OFF, unplug the power cord, and remove the cover. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-21...
Page 192: Figure 7-12. Replacing The Pressure Transducer
0.027 mmHg per foot of altitude. ▲ Do not attempt to calibrate the pressure transducer unless the pressure is known accurately. ▲ 7-22 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 193 6. Disconnect the pump from the pressure transducer. 7. Press to return to the Pressure Sensor Cal screen. to select Span. 8. At the Pressure Sensor Cal screen, press The Calibrate Pressure Span screen appears. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-23...
Page 194: Figure 7-13. Replacing The Flow Transducer
4. Loosen the two retaining screws holding the flow transducer to the floor plate and remove the flow transducer (Figure 7–13). Retaining Screws (2) Figure 7–13. Replacing the Flow Transducer 7-24 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 195: Flow Transducer Calibration
Zero. The Calibrate Flow Zero screen appears. 5. Wait at least 10 seconds for the zero reading to stabilize, and then press to save the zero flow value. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-25...
Page 196: Zero/Span And Sample Solenoid Valve Replacement
2. Unplug the solenoid electrical connector from the measurement interface board. 3. Remove the Teflon® lines from the solenoid. 4. Remove both screws holding the solenoid to the rear panel, and remove the solenoid. 7-26 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 197: Analog Output Testing
The Output Set To line displays Full-Scale. 7. Check that the meter is displaying the full scale value. If the meter reading differs by more than one percent, the analog outputs should be Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-27...
Page 198: Figure 7-14. Rear Panel Analog Input And Output Pins
Figure 7–14. Rear Panel Analog Input and Output Pins Table 7–4. Analog Output Channels and Rear Panel Pin Connections Voltage Channel Current Channel Ground 16, 18, 19, 35, 37 Current Output 16, 18, 20, 22, 24 Return 7-28 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 199: Analog Output Calibration
7. Press to select Calibrate Full-Scale. 8. Use until the meter reads the value shown in the Set Output To line, then press to save the value. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-29...
Page 200: Analog Input Calibration
The screen displays the input voltage for the selected channel. 4. Make sure that nothing is connected to the channel input pins and press to calibrate the input voltage on the selected channel to zero volts. 7-30 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 201: Calibrating The Input Channels To Full-Scale
6. Press > to return to the input channels display and repeat Steps 3-5 to calibrate other input channels to the source voltage as necessary. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-31...
Page 202: Ambient Temperature Calibration
The Calibrate Ambient Temperature menu appears. Note If Service Mode is not displayed, refer to “Accessing the Service Mode” on page 7-3, then return to the beginning of this step. ▲ 7-32 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 203: I/O Expansion Board (Optional) Replacement
(Figure 7–16). 4. Pop off the board from the mounting studs and remove the board. 5. To install the I/O expansion board, follow previous steps in reverse. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-33...
Page 204: Figure 7-15. Replacing The I/O Expansion Board (Optional)
Nut driver, 3/16-inch Equipment Damage Some internal components can be damaged by small amounts of static electricity. A properly ground antistatic wrist strap must be worn while handling any internal component. ▲ 7-34 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 205: Motherboard Replacement
Replacement” on page 7-33. 3. Remove the digital output board. See “Digital Output Board Replacement” on page 7-34. 4. Unplug all connectors from the motherboard. Note connector locations to facilitate reconnection. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-35...
Page 206: Measurement Interface Board Replacement
Measurement Bench and Lowering the Partition Panel” on page this chapter. 6. Calibrate the preamp board, pressure transducer, flow transducer, and ambient temperature sensor as defined earlier in this chapter. 7-36 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 207: Figure 7-17. Replacing The Measurement Interface Board
3. Pop off the board from the two top mounting studs and remove the board by lifting it up and off the slotted bottom support. 4. Replace the front panel board by following previous steps in reverse. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual 7-37...
Page 208: Figure 7-18. Replacing The Front Panel Board And The Lcd Module
▲ Do not use alcohol, acetone, MEK or other Ketone based or aromatic solvents to clean the module, use a soft cloth moistened with a naphtha cleaning solvent. ▲ 7-38 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 209: 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 48i Trace Level-Enhanced Instruction Manual 7-39...
Page 211: System Description
“Hardware” on page ● “Software” on page ● “Electronics” on page ● “I/O Components” on page ● Hardware Model 48i Trace Level-Enhanced hardware components (Figure 8–1) include: Optical bench ● Band-pass filter ● Bench heater board ● Chopper motor ●...
Page 212: Figure 8-1. Hardware Components
This assembly is used for maintaining the optical bench at a constant temperature. Chopper Motor The chopper motor spins the gas filter wheel and chopper disk at a uniform speed. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 213: Optical Pickup
The purge flow switch monitors the flow of purge gas when the filter wheel purge gas option is installed. (optional) Software The processor software tasks are organized into four areas: Instrument control ● Monitoring signals ● Measurement calculations ● Output communication ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 214: Instrument Control
-5% of full-scale. The zero and span values may be set by the user to any desired value. Electronics All electronics operate from a universal switching supply, which is capable of auto-sensing the input voltage and working over the entire operating range. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 215: Motherboard
● Voltage Outputs. Internal Connectors Internal connectors include: Function key panel and Display ● Measurement Interface Board Data ● I/O Expansion Board Data ● Digital Output Board ● AC distribution ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 216: Measurement Interface Board
Assembly fitting. The pressure transducer output is produced by measuring the pressure difference between the sample gas pressure and ambient air pressure. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 217: Bench Heater Board
This board also includes signal buffers for the graphics display control signals and a high voltage power supply for the graphics display backlight. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 218: I/O Components
The analog outputs may be assigned to any measurement or diagnostic channel with a user-defined range in the units of the selected parameter. The current outputs are independent of the voltage outputs. The current Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 219: Analog Voltage Inputs (Optional)
1200 to 19,200 baud. The user can also set the data bits, parity, and stop bits. The following protocols are supported: C-Link ● MODBUS Slave ● Geysitech (Bayern-Hessen) ● Streaming Data ● Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 220: Table 8-1. Rs-232 Db Connector Pin Configurations
(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 8-10 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 221: 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 48i Trace Level- Enhanced analyzer. Connector This port is used in other models to communicate with smart external devices that may be mounted hundreds of feet from the analyzer using an RS-485 electrical interface.
Page 223: Optional Equipment
Options” on page ● Teflon Particulate A 5-10 micron pore size, two-inch diameter Teflon® element is available for the Model 48i Trace Level-Enhanced. This filter should be installed just Filter prior to the bulkhead. When using a filter, all calibrations and SAMPLE span checks must be performed through the filter.
Page 224: Table 9-1. Cable Options
1-37 are for 37-pin cables. ▲ Table 9–1. Cable Options Description Cable Length DB37M to open end Six feet DB37F to open end Six feet DB25M to open end Six feet RS-232 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 225: Table 9-2. Color Codes For 25-Pin And 37-Pin Cables
VIOLET PINK/GREEN GRAY PIND/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 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 226: Figure 9-1. Rack Mount Option Assembly
Mounted in an EIA-style rack, includes mounting slides, and front panel EIA-rack mounting handles. Retrofit rack Mounted in a Thermo non-EIA rack, includes mounting slides, and retrofit front panel rack-mounting handles. Figure 9–1. Rack Mount Option Assembly Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 227: Figure 9-2. Bench Mounting
Optional Equipment Mounting Options Figure 9–2. Bench Mounting Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 228: Figure 9-3. Eia Rack Mounting
Optional Equipment Mounting Options Figure 9–3. EIA Rack Mounting Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 229: Figure 9-4. Retrofit Rack Mounting
Optional Equipment Mounting Options Figure 9–4. Retrofit Rack Mounting Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 231: Appendix A Warranty
(i) normal wear and tear, (ii) accident, disaster or event of force majeure, (iii) misuse, fault or negligence of or by Buyer, (iv) use of the Products in a manner for which Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 232 OR WRITTEN, WITH RESPECT TO THE PRODUCTS, INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. SELLER DOES NOT WARRANT THAT THE PRODUCTS ARE ERROR-FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 233: Appendix B C-Link Protocol Commands
C-Link Protocol Commands This appendix provides a description of the C-Link protocol commands that can be used to remotely control a Model 48i Trace Level-Enhanced 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. C-Link functions can be accessed over Ethernet using TCP/IP port 9880.
Page 234: Commands
(ASCII) character. The command in the example below begins with the ASCII character code 176 decimal, which directs the command to the Model 48i Trace Level-Enhanced, and is terminated by a carriage return “CR” (ASCII character code 13 decimal).
Page 235: Table B-1. C-Link Protocol Commands
Reports analog current output range per channel B-37 analog vin Retrieves analog voltage input data per channel B-37 analog vout range Reports analog voltage output range per channel B-37 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 236 Reports/sets data treatment for concentration values in short B-16 records date Reports/sets current date B-32 default params Sets parameters to default values B-32 dhcp Reports/sets state of use of DHCP B-34 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 237 Reports coefficients of the curve developed from hi multi- B-24 point calibration high coef 2 Reports coefficients of the curve developed from hi multi- B-24 point calibration high range Reports/selects current CO high range B-28 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 238 Reports sample/reference ratio calculated using the low B-10 averaging time low sp conc Reports/sets low span concentration B-25 Outputs long records in the format specified in the command B-17 lrec Outputs long records B-18 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 239 Reports/sets output format for short records (ASCII or binary) B-19 srec layout Reports current layout of short record data B-20 srec mem size Reports maximum number of short records B-20 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 240: Table B-2. Averaging Times
B–2. The example below sets the low range averaging time to 120 seconds. Send: set low avg time 8 Receive: set low avg time 8 ok Table B–2. Averaging Times Selection Averaging Time (seconds) 1 seconds Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 241 27.2 °C. The example below shows that temperature compensation is on and that the internal temperature is 27.2 °C. Send: internal temp Receive: internal temp 27.2 deg C, actual 27.2 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 242 In the example below, the instrument is reporting that the AGC circuit is on, that the instrument is in the span gas mode, and that the CO high concentration alarm is activated. Send: flags Receive: flags 80028000 B-10 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 243: Figure B-1. Flags
The example below sets the agc intensity alarm maximum value to 20. Send: set alarm agc intensity max 20 Receive: set alarm agc intensity max 20 ok Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-11...
Page 244 These commands report the CO concentration alarm minimum and maximum values current setting. The example below reports that the CO concentration minimum is 5.2 ppm. Send: alarm conc min Receive: alarm conc min 5.2 ppm B-12 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 245 The example below sets the motor speed alarm maximum value to 20 minutes. Send: set alarm motor speed max 20 Receive: set alarm motor speed max 20 ok Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-13...
Page 246 The example below shows the CO concentration minimum alarm trigger to ceiling, according to Table B–3. Send: alarm trig conc Receive: alarm trig conc 1 B-14 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 247: Table B-3. Alarm Trigger Values
15, negative 15, positive 5, positive 3.3, positive 18 IR, positive 18 MOT, and VBIAS. Each voltage value is separated by a space. Send: diag volt mib Receive: diag volt mib 24.1 14.9 -14.9 4.9 3.2 17.9 17.9 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-15...
Page 248: Datalogging
(srecs). The example below sets the data treatment for concentrations in lrec to minimum. Send: set data treatment lrec min Receive: set data treatment lrec min ok list din list dout B-16 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 249 In the example below, the command requests a long record with no checksum, in ASCII format with text. For details on how to decode the flag fields within these records, see the “flags” command. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-17...
Page 250 100 records from the last record collected (record 740), and then returns 5 records: 640, 641, 642, 643, and 644. For details on how to decode the flag fields within these records, see the “flags” command. B-18 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 251: Table B-4. Record Output Formats
ASCII with text. Send: set lrec format 1 Receive: set lrec format 1 ok Table B–4. Record Output Formats Format Output Format ASCII no text ASCII with text Binary data Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-19...
Page 252 These commands set the long and short records logging period to value in minutes. The example below sets the long record logging period to 15 minutes. Send: set lrec per 15 Receive: set lrec per 15 ok B-20 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 253 The example below copies the current list in scratch pad into the long records list. Send: set copy sp to lrec Receive: set copy sp to lrec ok Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-21...
Page 254 1 34 Receive: set sp field 1 34 ok stream per This command reports the currently set time interval in seconds for streaming data. Send: stream per Receive: stream per 10 B-22 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 255: Table B-5. Stream Time Values
The high and low commands are only available in dual and auto range mode. If the mode is incorrect, the instrument responds with “can’t, wrong settings”. The example below shows a successful auto- calibration of the low CO coefficient. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-23...
Page 256 Lo Multi-Point Calibration in dual and auto range mode. The example below reports the coefficient 0 having a value of 1.005. Send: coef 0 Receive: coef 0 1.005 ok B-24 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 257 The example below sets the span concentration to 1000 ppb in the single range mode. Send: set sp conc 1000 Receive: set sp conc 1000 ok Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-25...
Page 258: Keys/Display
It is sent as a type '5' binary c_link response with no checksum. The RLE encoding consists of a 0 followed by an 8-bit count of consecutive 0xFF bytes. The following 'c' code will expand the incoming data. B-26 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 259 BMP. screen This command is meant for backward compatibility on the C series. Screen information is reported using the “iscreen” command above. Send: screen Receive: screen Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-27...
Page 260: Table B-6. Standard Ranges
Table B–6. The example below sets the CO full-scale range to 50 ppm. Send: set range 5 Receive: set range 5 ok Table B–6. Standard Ranges Selection mg/m 1,000 1,000 B-28 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 261 This command sets the zero/span valves to the sample mode. The example below sets the instrument to sample mode, that is, the instrument is reading the sample gas. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-29...
Page 262 These commands turn the pressure compensation on or off. The example below turns pressure compensation off. Send: set pres comp off Receive: set pres comp off ok B-30 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 263: Table B-7. Contrast Levels
This command sets the screen’s level of contrast, according to Table B–7. The example below sets the contrast level to 50%. Send: set contrast 5 Receive: set contrast 5 ok Table B–7. Contrast Levels Level Contrast Level 100% Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-31...
Page 264 This command reports the current time (24-hour time). The example below reports that the internal time is 2:15:30 pm. Send: time Receive: time 14:15:30 set time hh:mm:ss hh = hours mm = minutes ss = seconds B-32 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 265: Communications Configuration
This command sets the analyzer’s IP address, where address consists of four numbers ranging from 0-255 inclusive, separated by “.”. Send: set addr ip 192.168.1.200 Receive: set addr ip 192.168.1.200 ok Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-33...
Page 266 These commands enables and disables the DHCP service by either on or off. Changes to this parameter will only take effect when the analyzer is powered up. The example below sets the DHCP service on. B-34 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 267: Table B-8. Reply Termination Formats
This command sets the host name string, where string is 1-13 alphanumeric characters. Send: set host name analyzer01 Receive: set host name analyzer01 ok instr name This command reports the instrument name. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-35...
Page 268 Receive: program no iSeries 48iTLE 01.02.12.095 set layout ack This command disables the stale layout/layout change indicator (‘*’) that is attached to each response if the layout has changed. B-36 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 269: Table B-9. Analog Current Output Range Values
This command reports the analog voltage output channel range, where channel is between 1 and 6 inclusive, according to Table B–10. Send: analog vout range 2 Receive: analog vout range 2 3 Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-37...
Page 270: Table B-10. Analog Voltage Output Range Values
(high or low). Use “list din var” command to obtain the list of supported index values and corresponding actions. Send: set din 5 9 high Receive: set din 1 9 high ok dout channel B-38 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 271: Table B-11. Default Output Assignment
Not Used Not Used Not Used Current Output Not Used Not Used Not Used Current Output Not Used Not Used Not Used Current Output Not Used Not Used Not Used Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-39...
Page 272 Note If individual relays have been assigned different logic then the response would be a 4-digit hexadecimal string with the least significant byte (LSB) being relay no 1. ▲ B-40 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 273: Record Layout Definition
ASCII ERec response. Parameters are separated ASCII Responses by spaces and the line is terminated by a \n (the normal line separator character). Valid fields are: Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-41...
Page 274: Format Specifier For Binary Responses
Each line is composed of three major components: (1) a text field, (2) a value field, and (3) a button. None of these three components is required. The text field contains statically displayed text. B-42 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 275: Text
All alarm information is presumed to be two bits long (low and high). The bitfield extraction is performed on the integer part of the source. Typical alarm information would appear as '@6.4'. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-43...
Page 276: Translation Table
If a ‘|’ is present, it indicates a command which is sent to the instrument upon successful completion of the button command to update the value field. This is not currently used. B-44 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 277: Examples
There is a bitfield extraction of bits 12 through 13 from the source (the value type is not important here because the value is being translated to an output string). Once the bits have been extracted, Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual B-45...
Page 278 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-46 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 279: Appendix C Modbus Protocol
This is achieved by using the supported MODBUS parameters listed below. For details of the Model 48i Trace Level-Enhanced MODBUS Protocol specification, see the following topics: “Serial Communication Parameters”...
Page 280: Tcp Communication Parameters
0x0000 to 0xFFFF (Passed back in response) Protocol Identifier 2 Bytes 0x00 (MODBUS protocol) Length 2 Bytes 0x0000 to 0xFFFF (Number of following bytes) Unit Identifier 1 Byte 0x00 to 0xFF (Passed back in response) Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 281: Function Code
These requests specify the starting address, i.e. the address of the first output specified, and the number of outputs. The outputs are addressed starting at zero. Therefore, outputs numbered 1–16 are addressed as 0–15. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 282 1 Byte 0x01 or 0x02 Exception code 1 Byte 01=Illegal Function, 02=Illegal Address, 03=Illegal Data, 04=Slave Device Failure Here is an example of a request and response to read outputs 2–15: Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 283: X03/0X04) Read Holding Registers / Read Input Registers
For each register, the first byte contains the high order bits and the second contains the low order bits. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 284 No. of Registers Hi 0x00 No. of Registers Lo 0x04 Response Field Name (Hex) Function 0x03 Byte Count 0x06 Register value Hi (10) 0x02 Register value Lo (10) 0x2B Register value Hi (11) 0x00 Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 285: X05) Force (Write) Single Coil
0x0000 to maximum allowed by instrument Output Value 2 Bytes 0x0000 or 0xFF00 Error Response Function code 1 Byte Function code + 0x80 Exception code 1 Byte 01=Illegal Function, 02=Illegal Address, 03=Illegal Data, 04=Slave Device Failure Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 286: Table C-1. Read Coils For 48I Trace Level-Enhanced
Output Value Hi Output Value Lo MODBUS Parameters The following Table C–1 through Table C–3 lists the MODBUS parameters supported for the Model 48i Trace Level-Enhanced. Supported Table C–1. Read Coils for 48i Trace Level-Enhanced Coil Number Status AUTO RANGE LOCAL/REMOTE SERVICE...
Page 287: Table C-2. Read Registers For 48I Trace Level-Enhanced
MOTHERBOARD STATUS ALARM MEASUREMENT INTERFACE BD STATUS ALARM I/O EXP BD STATUS ALARM CONC ALARM PURGE MODE SCRUB TEST MODE ZERO CHECK/CAL SPAN CHECK/CAL Table C–2. Read Registers for 48i Trace Level-Enhanced Register Number Variable 40001&40002 40003&40004 LO CO 40005&40006 HI CO 40007&40008...
Page 288: Table C-3. Write Coils For 48I Trace Level-Enhanced
BIAS SUPPLY 40057&40058 NOT USED 40059&40060 NOT USED 40061&40062 NOT USED 40063&40064 SCRUBBER EFFICIENCY Table C–3. Write Coils for 48i Trace Level-Enhanced Coil Number Action ZERO MODE SPAN MODE SET BACKGROUND CAL TO LOW SPAN AOUTS TO ZERO AOUTS TO FS...
Page 289: Appendix D Geysitech (Bayern-Hessen) Protocol
This is achieved by using the supported Geysitech commands listed below. For details of the Model 48i Trace Level-Enhanced Geysitech Protocol specification, see the following topics: “Serial Communication Parameters”...
Page 290: Tcp Communication Parameters
Each Command is framed by control characters, <STX> at the start and terminated with either <ETX> or <CR>. If a command is terminated with <ETX> then additional two characters <BCC> is attached after <ETX>, this is the block checksum. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 291: Block Checksum
Command ‘K’ switches the instrument gas mode to Span mode. Command ‘M’ switches the instrument gas mode to Sample mode. The following are the different acceptable formats of the ST command: <STX>ST<address><control command><ETX><BCC> <STX>ST<address><control command><CR> <STX>ST<address><SP><control command><CR> <STX>ST<address><SP><control command><ETX><BCC> Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 292 <STX> which is followed by the characters DA, and the <address> (if present) matches the Instrument Address, and the command is terminated with either <CR> with no checksum or <ETX> followed by the correct checksum <BCC>. Model 48i Trace Level-Enhanced Instruction Manual Thermo Fisher Scientific...
Page 293 Table D–1 Table D–2 below. <SFKT>: is the space provided for future use for special function, it currently contains a string of ten 0’s i.e. <0000000000>. Thermo Fisher Scientific Model 48i Trace Level-Enhanced Instruction Manual...
Page 294: Measurements Reported In Response To Da Command
The following measurements reported in response to DA command are for the Model 48i Trace Level-Enhanced. response to DA command Single Range Mode The 1 measurement reported in single range mode for the Model 48i Trace Level-Enhanced includes: ● Dual/Auto Range Mode...
Page 295: Table D-1. Operating Status For Model 48I Trace Level-Enhanced
Geysitech (Bayern-Hessen) Protocol Geysitech Commands Table D–1. Operating Status for Model 48i Trace Level-Enhanced  Bit  Hex-value Operating status: Service Mode (On) Maintenance (Local) Zero gas (On) Span gas (On) Gas Unit Indication (ppm OR ppb) Ozonator (Off) PMT (Off) Not used Table D–2.

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