Thermo 49i Instruction Manual Download Page 172

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Servicing

Photometer Board Replacement

6-26

Model 49

Primary Standard Instruction Manual

Thermo Fisher Scientific

Figure 6-11.

Replacing the Optical Bench

Photometer Board

Replacement

Use the following procedure to replace the photometer board (

Figure 6-9

Equipment required:

Photometer board

Philips screwdriver

Use the following procedure to replace the photometer board.

1. Turn instrument OFF, unplug the power cord, and remove the cover.

2. Remove the connection cables from the board. Note the locations to

facilitate reconnection.

Photometer Lamp

Lamp Heater

Access Port Cell B IN

Absorption Cell B

Access Port Cell B OUT

Detector B

Access Port Cell A IN

Input Block

Absorption Cell A

Access Port Cell A OUT

Output Block

Detector A

Captive Screws (4)

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.

Summary of Contents for 49i

Page 1: ...Model 49i Primary Standard Instruction Manual UV Photometric O3 Calibrator Part number 102474 00 11Jan2008 ...

Page 2: ...ons 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: ...ientific 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 Further information on Thermo Fisher Scientific s compliance with these Directives the recyclers in your country and information on Thermo Fisher Scientific products which may assist the detection of substances subject to the RoHS Directive a...

Page 4: ......

Page 5: ... Assemblies 2 4 Startup 2 8 Chapter 3 Operation 3 1 Display 3 2 Pushbuttons 3 3 Soft Keys 3 4 Software Overview 3 4 Power Up Screen 3 6 Run Screen 3 6 Main Menu 3 7 Range Menu 3 7 Gas Units 3 8 O3 Range 3 8 Set Custom Ranges 3 11 Averaging Time 3 12 Calibration Factors Menu 3 12 O3 Background 3 13 O3 Span Coefficients 3 13 Instrument Controls Menu 3 15 Custom Levels 3 15 Pump 3 16 Temperature Comp...

Page 6: ...nalog Outputs 3 56 Instrument Configuration 3 57 Contact Information 3 58 Alarms Menu 3 58 O3 Lamp Temperature 3 59 Lamp Temperature 3 60 Bench Temperature 3 61 Pressure 3 62 Flow A and B 3 63 Intensity A and B 3 64 O3 Concentration 3 65 Service Menu 3 66 Pressure Check 3 67 Lamp Setting 3 69 Detector Calibration 3 69 Intensity Check 3 70 O3 Response Coefficient 3 71 Manual O3 Lamp Setting 3 71 Pr...

Page 7: ...oise 4 5 Capillary Service 4 5 Pump Rebuilding 4 6 Leak Test and Pump Checkout 4 7 External Leaks 4 7 Solenoid Leaks 4 8 Solenoid Leak Test 4 9 Chapter 5 Troubleshooting 5 1 Safety Precautions 5 1 Troubleshooting Guides 5 2 Board Level Connection Diagrams 5 6 Connector Pin Descriptions 5 8 Service Locations 5 21 Chapter 6 Servicing 6 1 Safety Precautions 6 3 Firmware Updates 6 4 Accessing the Serv...

Page 8: ...amp Voltage Adjustment 6 28 Sample Reference Solenoid Replacement 6 29 Detector Replacement 6 30 Pressure Transducer Replacement 6 31 Pressure Transducer Calibration 6 32 Flow Transducer Replacement 6 34 Flow Transducer Calibration 6 35 Ozonator Lamp Replacement 6 36 Ozonator Lamp Heater Replacement 6 37 Ozonator Replacement 6 39 Ozonator Board Replacement 6 39 Service Locations 6 40 Chapter 7 Sys...

Page 9: ...11 Ethernet Connection 7 12 External Accessory Connector 7 12 Chapter 8 Optional Equipment 8 1 Zero Air Source 8 1 Teflon Particulate Filter 8 1 I O Expansion Board Assembly 8 1 Terminal Block and Cable Kits 8 2 Cables 8 2 25 Pin Terminal Board Assembly 8 3 Mounting Options 8 3 Appendix A Warranty A 1 Appendix B C Link Protocol Commands B 1 Instrument Identification Number B 2 Entering Units in PP...

Page 10: ... Code C 3 Data C 3 Error Check C 3 Function Codes C 3 0x01 0x02 Read Coils Read Inputs C 3 0x03 0x04 Read Holding Registers Read Input RegistersC 5 0x05 Force Write Single Coil C 7 MODBUS Commands Supported C 8 Appendix D Geysitech Bayern Hessen Protocol D 1 Serial Communication Parameters D 1 TCP Communication Parameters D 2 Instrument Address D 2 Abbreviations Used D 2 Basic Command Structure D ...

Page 11: ...el Connection Diagram Common Electronics 5 6 Board Level Connection Diagram Measurement System 5 7 Properly Grounded Antistatic Wrist Strap 6 4 Component Layout 6 7 Removing the Measurement Bench and Lowering the Partition Panel 6 8 Replacing the Pump 6 10 Replacing a Fan 6 11 Rear Panel Analog Input and Output Pins 6 13 Replacing the I O Expansion Board Optional 6 19 Rear Panel Board Connectors 6...

Page 12: ...Figures xii Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific ...

Page 13: ...Power Supply Connector Pin Descriptions 5 19 Photometer Power Supply Connector Pin Descriptions 5 20 Model 49i Primary Standard Replacement Parts 6 4 Model 49i Primary Standard Cables 6 6 External Device Connection Components 6 6 Analog Output Channels and Rear Panel Pin Connections 6 13 Analog Input Channels and Rear Panel Pin Connections 6 14 RS 232 DB Connector Pin Configurations 7 11 RS 485 DB...

Page 14: ...Tables xiv Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific Operating Status for Model 49i and 49i Primary Standard D 8 Error Status for Model 49i and 49i Primary Standard D 8 ...

Page 15: ... consistent instrument operation Chapter 5 Troubleshooting presents guidelines for diagnosing analyzer failures isolating faults and includes recommended actions for restoring proper operation Chapter 6 Servicing presents safety alerts for technicians working on the analyzer step by step instructions for repairing and replacing components and a replacement parts list It also includes contact infor...

Page 16: ... manner not specified by the manufacturer the protection provided by the equipment may be impaired Safety and Equipment Damage Alerts This manual contains important information to alert you to potential safety hazards and risks of equipment damage Refer to the following types of alerts you may see in this manual Safety and Equipment Damage Alert Descriptions Alert Description DANGER A hazard is pr...

Page 17: ...f immediately using soap and water Equipment Damage Do not attempt to lift the analyzer by the cover or other external fittings Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component This adjustment should only be performed by an instrument service technician Handle all printed cir...

Page 18: ...ction manual may cause harmful interference to radio communications 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 WEEE Symbol The following symbol and description identify the WEEE marking used on the instrument and in the associated documentation Where to Get Help Ser...

Page 19: ...r defined analog outputs Analog input options Fast internal ozonator Fast response time Short lag time Automatic temperature and pressure compensation User selectable digital input output capabilities Standard communications features include RS232 485 and Ethernet C Link MODBUS Geysitech Bayern Hessen protocol and streaming data protocols For details of the calibrator s principle of operation and ...

Page 20: ...ion in parts per million ppm I UV light intensity of sample with ozone sample gas Io UV light intensity of sample without ozone reference gas Zero air is supplied to the Model 49i Primary Standard through the zero air bulkhead and is split into two gas streams as shown in Figure 1 1 One gas stream flows through a pressure regulator to the reference solenoid valve to become the reference gas Io The...

Page 21: ...tic Specifications Table 1 1 Model 49i Primary Standard Specifications Photometer Preset ranges 50 100 200 500 1000 2000 5000 ppb 100 200 500 1000 2000 5000 10000 μg m3 Custom ranges 50 to 5000 ppb 100 to 10000 μg m3 Zero roise 0 25 ppb RMS 60 second averaging time Lower detectable limit 1 ppb Response time 20 seconds 0 95 Lag time 10 seconds Linearity 1 of full scale Flow rate 1 3 LPM Operating t...

Page 22: ... A user selectable alarm output relay logic 100 mA 200 VDC Digital inputs 16 digital inputs user select programmable TTL level pulled high Serial Ports 1 RS 232 or RS 485 with two connectors baud rate 1200 115200 data bits parity and stop bits protocols C Link MODBUS and streaming data all user selectable Ethernet connection RJ45 connector for 10Mbs Ethernet connection static or dynamic TCP IP add...

Page 23: ... can lift the unit it is desirable to have two persons lifting one by grasping the bottom in the front and the other by grasping the bottom in the rear Unpacking and Inspection The Model 49i Primary Standard is shipped complete in one container If there is obvious damage to the shipping container when you receive the instrument notify the carrier immediately and hold for inspection The carrier is ...

Page 24: ...ure 2 1 Remove the Packing Material 4 Remove the three shipping screws Figure 2 2 Figure 2 2 Remove the Shipping Screws 5 Check for possible damage during shipment 6 Check that all connectors and circuit boards are firmly attached Units without Optional I O Board Units with Optional I O Board Remove Packing Remove Packing 2 pieces 2 pieces Shipping Screws 3 ...

Page 25: ... than 10 feet 2 Connect the EXHAUST bulkhead to a suitable vent The exhaust line should be 1 4 inch OD with a minimum ID of 1 8 inch The length of the exhaust line should be less than 10 feet Verify that there is no restriction in this line 3 Connect a suitable recording device to the rear panel connector See the Operation chapter for more information about the rear panel pin outs 4 Plug the instr...

Page 26: ...ection options include Individual terminal board PCB assemblies Terminal block and cable kits optional Individual cables optional For detailed information on the optional connection components refer to the Optional Equipment chapter For associated part numbers refer to External Device Connection Components in the Servicing chapter Terminal Board PCB Assemblies The following terminal board PCB asse...

Page 27: ...using the included tie down and spacer Table 2 1 identifies the connector pins and associated signals Note Not all of the available I O for the instrument are brought out on this terminal If more I O is desired you must use an alternative connection method Figure 2 4 I O Terminal Board Views Component Side Viewed from Top of Board Assembled Connector See Detail A Detail A See Detail B Detail B Tab...

Page 28: ...Figure 2 5 D O Terminal Board Views 3 Analog2 15 Power_Fail_NO 4 Analog ground 16 TTL_Input1 5 Analog3 17 TTL_Input2 6 Analog ground 18 TTL_Input3 7 Analog4 19 TTL_Input4 8 Analog ground 20 Digital ground 9 Analog5 21 TTL_Input5 10 Analog ground 22 TTL_Input6 11 Analog6 23 TTL_Input7 12 Analog ground 24 Digital ground Table 2 1 I O Terminal Board Pin Descriptions continued Pin Signal Description P...

Page 29: ...n 1 Relay1_ContactA 13 Relay7_ContactA 2 Relay1_ContactB 14 Relay7_ContactB 3 Relay2_ContactA 15 Relay8_ContactA 4 Relay2_ContactB 16 Relay8_ContactB 5 Relay3_ContactA 17 Relay9_ContactA 6 Relay3_ContactB 18 Relay9_ContactB 7 Relay4_ContactA 19 Relay10_ContactA 8 Relay4_ContactB 20 Relay10_ContactB 9 Relay5_ContactA 21 Solenoid_Drive_Output1 10 Relay5_ContactB 22 24V 11 Relay6_ContactA 23 Solenoid...

Page 30: ...g ranges and averaging times to appropriate settings For more information about instrument parameters see the Operation chapter Table 2 3 25 Pin Terminal Board Pin Descriptions Pin Signal Description Pin Signal Description 1 IOut1 13 Analog_In1 2 GND_ISO 14 Analog_In2 3 IOut2 15 Analog_In3 4 GND_ISO 16 GNDD 5 IOut3 17 Analog_In4 6 GND_ISO 18 Analog_In5 7 IOut4 19 Analog_In6 8 GND_ISO 20 GNDD 9 IOu...

Page 31: ...as units O3 range and custom ranges Averaging Time on page 3 12 describes the averaging period applied to O3 measurements Calibration Factors Menu on page 3 12 describes the calibration factors used to make minor corrections to the O3 measurement readings Instrument Controls Menu on page 3 15 describes the items that control the calibrator Diagnostics Menu on page 3 50 describes the diagnostic inf...

Page 32: ...rument controls help and error messages Some menus contain more items than can be displayed at one time For these menus use and to move the cursor up and down to each item Figure 3 1 49i Primary Standard Front Panel Display CAUTION If the LCD panel breaks do not let the liquid crystal contact your skin or clothes If the liquid crystal contacts your skin or clothes wash it off immediately using soa...

Page 33: ...n Menu when in the Run screen or back up one level in the menu system For more information about the Main Menu see Main Menu later in this chapter Help The is context sensitive that is it provides additional information about the screen that is being displayed Press for a brief explanation about the current screen or menu Help messages are displayed using lower case letters to easily distinguish t...

Page 34: ...screen item cannot be assigned the key assignment screen will not come up upon entering right arrow soft key combinations All items under the Service menu including the menu itself cannot be assigned soft keys Software Overview The Model 49i Primary Standard utilizes the menu driven software illustrated by the flowchart in Figure 3 3 The Power Up screen shown at the top of the flowchart is display...

Page 35: ...NVCIGU 6GORU 2TGUUWTG NQYU GNN 1 PVGPUKVKGU PCNQI PRWV 4GCFKPIU PCNQI PRWV 8QNVCIGU KIKVCN PRWVU 4GNC 5VCVGU 6GUV PCNQI 1WVRWVU PUVTWOGPV QPHKI QPVCEV PHQ NCTOU NCTOU GVGEVGF 1 COR 6GOR COR 6GOR GPEJ 6GOR 2TGUUWTG NQY NQY PVGPUKV PVGPUKV 1 QPE 5VCVWU PV F 5VCVWU 1 ZR F 5VCVWU 5GTXKEG 2TGUUWTG JGEM COR 5GVVKPI GVGEVQT CN PVGPUKV JGEM 1 4GURQPUG QGH CPWCN 1 COR 5GVVKPI 2TGUUWTG CN NQY CN NQY CN 6GOR...

Page 36: ...e status bar displays sample cal solenoid valve or internal ozonator time and alarm status The word ZERO on the bottom left of the display indicates the calibrator is in zero mode Other modes appear in the same area of the display as LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4 and LEVEL 5 or blank to signify manual mode as shown below In manul mode use and to increase and decrease the O3 output concentration ...

Page 37: ...s in service mode For more information on the service mode see Service Mode later in this chapter Use and to move the cursor up and down Press to select a choice Press to return to the Main Menu or to return to the Run screen Range Menu The Range menu allows the operator to select the gas units O3 range and to set the custom ranges In the Main Menu choose Range MAIN MENU RANGE AVERAGING TIME CALIB...

Page 38: ...hange units you should also check the range settings In the Main Menu choose Range Gas Units Use and to scroll through a list of choices Press to save the new units Note If the units change from ppb ppm to μg m3 mg m3 or vice versa the instrument should be re calibrated particularly if the user s standard temperature is different from 20 C A display warning will appear that ranges will be defaulte...

Page 39: ...ges The analog outputs are arranged on the rear panel connector as shown in Figure 3 4 See Table 3 3 for channels and pin connections For more information about custom ranges see Set Custom Ranges below ppb ppm μg m3 mg m3 50 0 05 100 0 1 100 0 10 200 0 2 200 0 20 400 0 4 500 0 50 1 000 1 1 000 1 2 000 2 2 000 2 5 000 5 5 000 5 10 000 10 C1 C1 C1 C1 C2 C2 C2 C2 C3 C3 C3 C3 O3 RANGE CURRENTLY 500 0...

Page 40: ...efault Analog Outputs Note All channels are user definable If any customization has been made to the analog output configuration the default selections may not apply Channel Pin I O Terminal Pin Description 1 14 1 O3 Analog Output 2 33 3 O3 Analog Output 3 15 5 None 4 34 7 None 5 17 9 None 6 36 11 None Ground 16 18 19 35 37 2 4 6 8 10 12 Signal Ground ...

Page 41: ...e Custom Ranges screen is used to define the custom ranges The display shows the current custom range The next line of the display is used to set the range To use the custom full scale range be sure to select it Custom range 1 2 or 3 in the O3 Range screen For more information about selecting ranges see O3 Range above In the Main Menu choose Range Set Custom Ranges Custom range 1 2 or 3 Use and to...

Page 42: ... be output at each 10 second update Therefore the lower the averaging time the faster the front panel display and analog outputs respond to concentration changes Longer averaging times are typically used to smooth output data The following averaging times are available 10 20 30 60 90 120 180 240 and 300 seconds In the Main Menu choose Averaging Time Use and to scroll through a list of choices Pres...

Page 43: ...ement the proposed background value Press to save the new background O3 Span Coefficients The O3 span coefficients is s used to make small adjustments to the output level This adjustment should only be made when the Model 49i Primary Standard is being precisely matched to a NIST traceable O3 calibrator Normally the Model 49i Primary Standard does not require any compensation Note The concentration...

Page 44: ...lt screen allows the user to reset the calibration configuration values to factory defaults In the Main Menu choose Service Calibration Factors Reset User Cal Defaults Press to warn user and enable restore with Use to reset the calibration pressure reference value when pressed after O3 COEFFICIENT O3 600 SET COEF TO 1 000 ª INC DEC SAVE VALUE RANGE AVG DIAGS ALARM RESTORE DEFAULT CAL RESTORE DEFAU...

Page 45: ...custom level zero In the Main Menu choose Instrument Controls Custom Levels Custom Levels The Custom Levels screen is used for setting user defined concentration levels In the Main Menu choose Instrument Controls Custom Levels Custom Level 1 2 3 4 or 5 Use and to increment or decrement the numeric value Press to save the new level INSTRUMENT CONTROLS CUSTOM LEVELS PUMP TEMPERATURE COMPENSATION PRE...

Page 46: ...ions in sample gas temperature The Model 49i Primary Standard can be operated with or without temperature compensation When temperature compensation is on the display shows the sample gas temperature measured by a thermistor on the Interface board When temperature compensation is off the display shows the standard temperature of 0 0 C In the Main Menu choose Instrument Controls Temperature Compens...

Page 47: ... represents the current sample pressure When pressure compensation is off the first line of the display shows the standard pressure of 760 mmHg In the Main Menu choose Instrument Controls Pressure Compensation Press to toggle and set the pressure compensation on or off Datalogging Settings The Datalogging Settings menu deals with datalogging In the Main Menu choose Instrument Controls Datalogging ...

Page 48: ...ord format 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 In the Main Menu choose Instrument Controls Datalogging Settings Select SREC or LREC View Logged Data Use and to toggle between number of records or date and time Press to accept DATALOGGING SETTINGS SELECT SREC LREC SREC VIEW LOGGED DATA ERASE LOG...

Page 49: ... left or right Use and to increment or decrement the numeric value Press to set the starting record and continue to the record display screen The Record Display screen read only displays the selected records Use and to view all the items in the record Use and to view records at different times SELECT START POINT BY SET TO OF RECS ª CHANGE ACCEPT RANGE AVG DIAGS ALARM SET BACK FROM CURRENT 0000000 ...

Page 50: ... 10 01 Use and to increment or decrement the selected field Use to advance to next field Press to set the date and time of the first record to be displayed and continue to the record display screen The Record Display screen read only displays the selected records Use and to view all the items in the record Use and to view records at different times time date flags 10 00 06 20 05 FC0088900 11 00 06...

Page 51: ...ions Other Measurements and Analog Inputs if the 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 will erase all currently logged data as the format of the stored data is changed In the Main Menu choose Instrument Controls Datalo...

Page 52: ...utput signal that is tied to the selected field item The selected item is shown by 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 In the Main Menu choose Instrument Controls Datalogging Settings Select Content Select Field Concentration...

Page 53: ... record format and erase record log file data see Commit Content below In the Main Menu choose Instrument Controls Datalogging Settings Select Content Select Field Other Measurements Use and to move the cursor up and down Press to select a new choice Analog Inputs The Analog Inputs screen allows the user to select the output signal none or analog inputs 1 8 that is tied to the selected field item ...

Page 54: ...ess to select a new choice Commit Content The Commit Content screen is used to save the selected output signal that is tied to the selected field item If no changes have been made NO CHANGES TO RECORD LIST will appear For more information about selecting the analog output signal group choices see Select Content above In the Main Menu choose Instrument Controls Datalogging Settings Commit Content P...

Page 55: ...nd erase record log file data Press to confirm reset 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 CHANGE LREC DATA AND CHANGE LREC FORMAT AND ERASE LREC LOG FILE DATA ERASE LREC LOG FILE DATA COMMIT COMMIT ARE YOU SURE YOU WANT T...

Page 56: ...e Memory Allocation Percent screen is used to select the percentage of each record type for both short records and long records Percentages between 0 and 100 are available in increments of 10 Changing this value results in log erasure for both short records and long records In the Main Menu choose Instrument Controls Datalogging Settings Configure Datalogging Memory Allocation Use and to scroll th...

Page 57: ...lue at the end of the interval In the Main Menu choose Instrument Controls Datalogging Settings Configure Datalogging Data Treatment Use and to scroll through a list of choices Press to save the data type Communication Settings The Communication Settings menu is used with communications control and configuration In the Main Menu choose Instrument Controls Communication Settings SET PERCENT SRECS S...

Page 58: ...calibrator when using C Link or MODBUS protocols to control the calibrator or collect data It may be necessary to edit the ID number if two or more of the same calibrator are connected to one computer Valid Instrument ID numbers are from 0 to 127 The Model 49i Primary Standard has a default Instrument ID of 49 For more information about the Instrument ID see Appendix B C Link Protocol Commands or ...

Page 59: ...ing Data Configuration The Streaming Data Configuration menu is used to allow for configuration of the 8 streaming data output items streaming interval current data format and current timestamp setting The Choose Item Signal submenu displays a list of the analog output signal group choices to choose from Choices are Concentrations Other Measurements and Analog Inputs if the I O expansion board opt...

Page 60: ...u choose Instrument Controls Communication Settings Streaming Data Config Streaming Data Interval Use and to scroll through a list of choices Press to save the new streaming data period STREAMING DATA CONFIG INTERVAL 10 SEC ADD LABELS NO PREPEND TIMESTAMP YES ITEM 1 O3 ITEM 2 CELLAI ITEM 3 CELLBI ITEM 4 NONE ª RANGE AVG DIAGS ALARM CHOOSE STREAM DATA CONCENTRATIONS OTHER MEASUREMENTS ANALOG INPUTS...

Page 61: ...n Settings Streaming Data Config Select Item Concentrations Use and to move the cursor up and down Press to select a new choice Other Measurements The Other Measurements screen allows the user to select the output signal that is tied to the selected streaming data item The selected item is shown by after it In the Main Menu choose Instrument Controls Communication Settings Streaming Data Config Se...

Page 62: ...nd down Press to select a new choice RS 232 RS 485 Selection The RS 232 RS 485 Selection screen allows the user to choose between the RS 232 or RS 485 specification for serial communication Note Disconnect the serial cable before changing RS 232 and RS 485 selection to prevent damage to the connected equipment In the Main Menu choose Instrument Controls Communication Settings RS 232 RS 485 Selecti...

Page 63: ... DHCP screen is used to specify whether or not to use DHCP When DHCP is enabled the network dynamically provides an IP address for the instrument In the Main Menu choose Instrument Controls Communication Settings TCP IP Settings Use DCHP Press to toggle and set DHCP on or off RS 232 RS 485 SELECTION RS 232 RS 485 SELECTION XXXXXX WARNING XXXXXXX CURRENTLY RS 232 DISCONNECT THE SERIALX X SET TO RS ...

Page 64: ...ss to save the new address Netmask The Netmask screen is used to edit the netmask The netmask is used to determine the subnet the instrument uses to directly communicate with other devices The netmask can only be changed when DHCP is OFF For more information on DHCP see Use DHCP In the Main Menu choose Instrument Controls Communication Settings TCP IP Settings Netmask Use and to move and change th...

Page 65: ...ols Communication Settings TCP IP Settings Gateway Use and to move and change the value of the gateway address Press to save the new address Host Name The host name screen is used to edit the host name When DHCP is enabled this name is reported to the DHCP server In the Main Menu choose Instrument Controls Communication Settings TCP IP Settings Host Name Use and to move the cursor or change betwee...

Page 66: ...ion Output Relay Settings The Output Relay Settings menu displays a list of the 10 analog output relays available and allows the user to select the logic state or instrument parameter for the relay selected Note The digital outputs may take up to one second after the assigned state occurs to show up on the outputs In the Main Menu choose Instrument Controls I O Configuration Output Relay Settings ...

Page 67: ...select the instrument state that is tied to the selected relay output A submenu lists signal types of either alarm and non alarm to choose from In the Main Menu choose Instrument Controls I O Configuration Output Relay Settings Select Relay Instrument State OUTPUT RELAY SETTINGS 1 NOP CONC ALARM 2 NOP NONE 3 NOP UNITS 4 NOP GEN ALARM 5 NOP ZERO MODE 6 NOP OZ LEVEL 1 7 NOP OZ LEVEL 2 ª RANGE AVG DI...

Page 68: ... Configuration Output Relay Settings Select Relay Instrument State Alarms Use and to scroll through a list of choices Press to save the new selection for the relay Non Alarm The Non Alarm status screen allows the user to select the non alarm status for the selected relay output The selected item is shown by after it In the Main Menu choose Instrument Controls I O Configuration Output Relay Setting...

Page 69: ...guration Digital Input Settings Use and to move the cursor up and down Press to select a choice Logic State The Logic State screen is used to change the I O relay to either normally open or normally closed The default state is open which indicates that a relay connected between the digital input pin and ground is normally open NON ALARM STATUS ITEMS NONE SERVICE UNITS ZERO MODE SPAN MODE SAMPLE MO...

Page 70: ...u choose Instrument Controls I O Configuration Digital Input Settings Select Relay Instrument Action Use and to scroll through a list of choices Press to save the new selection for the relay Analog Output Configuration The Analog Output Configuration menu displays a list of the analog output channels available for configuration Channel choices include all voltage channels all current channels volt...

Page 71: ...he Select Output Range screen is used to select the hardware range for the selected analog output channel Possible ranges for the voltage outputs are 0 100 mV 0 1 0 5 0 10 V In the Main Menu choose Instrument Controls I O Configuration Analog Output Config Select Channel Select Range Use and to scroll through a list of choices Press to save the new range OUTPUT CHANNELS ALL VOLTAGE CHANNELS ALL CU...

Page 72: ...og Output Config Select Channel Set Minimum or Maximum Value Use and to increment or decrement the numeric value Press to validate and save the new minimum value SELECT OUTPUT RANGE SELECTED OUTPUT V ALL CURRENTLY 0 10V SET TO 0 5V ª CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Table 3 4 Analog Output Zero to Full Scale Table Output Zero Value Full Scale 100 Value O3 Zero 0 Range Setting Range Status R...

Page 73: ...nu choose Instrument Controls I O Configuration Analog Output Config Select Channel Choose Signal To Output Use and to move the cursor up and down Press to select a choice Noise A Zero 0 Range Setting Noise B Zero 0 Range Setting Flow A User set alarm min value User set alarm max value Flow B User set alarm min value User set alarm max value Pressure User set alarm min value User set alarm max val...

Page 74: ...ces choice of 1 10 points in the table and corresponding number of points selected In the Main Menu choose Instrument Controls I O Configuration Analog Input Config Table 3 5 Signal Type Group Choices Concentrations Other Measurements Analog Inputs None None None O3 Intensity A Analog Input 1 Intensity B Analog Input 2 Noise A Analog Input 3 Noise B Analog Input 4 Flow A Analog Input 5 Flow B Anal...

Page 75: ...th 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 Press to save the new descriptor ANALOG INPUT CONFIG CHANNEL 1 IN1 CHANNEL 2 IN2 CHANNEL 3 IN3 CHANNEL 4 IN4 CHANNEL 5 IN5 CHANNEL 6 IN6 CHANNEL 7 IN7ª RANGE AVG DIAGS ALARM ANALOG INPUT 01 CONFIG DESCRIPTOR IN1 UNITS V DECIMAL PLACES 2...

Page 76: ...l Places The Decimal Places screen allows the user to select how many digits are displayed to the right of the decimal from 0 to 6 with a default of 2 In the Main Menu choose Instrument Controls I O Configuration Analog Input Config Select Channel Decimal Places Use and to increment or decrement the value Press to save the new value Number of Table Points The Number of Table Points screen allows t...

Page 77: ...trols I O Configuration Analog Input Config Select Channel Point 1 10 Volts The Volts screen allows the user to set the input voltage for the selected table point in the conversion table from 0 00 to 10 50 The default table is a two point table with point 1 0 00 V 000 0 U and point 2 10 00 V 10 0 U In the Main Menu choose Instrument Controls I O Configuration Analog Input Config Select Channel Sel...

Page 78: ...Menu choose Instrument Controls I O Configuration Analog Input Config Select Table Point User Value Use and to move the cursor left or right Use and to move the cursor up and down Press to save the new value Screen Contrast The Screen Contrast screen is used to change the contrast of the display Intensities between 0 and 100 in increments of 10 are available Changing the screen contrast may be nec...

Page 79: ...gnosing the Model 49i Primary Standard For more information about the service mode see Service Menu later in this chapter Note The service mode should be turned off when finished as it prevents remote operation In the Main Menu choose Instrument Controls Service Mode Press to toggle and set the service mode on or off Date Time The Date Time screen allows the user to view and change the system date...

Page 80: ...the instrument The analog input readings and analog input voltages are only displayed if the I O expansion board option is installed In the Main Menu choose Diagnostics DATE AND TIME 19 MAR 2005 12 34 56 DATE AND TIME PRESS TO EDIT 19 MAR 2005 12 34 56 SETTING DAYS SET MONTHS ª CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM DIAGNOSTICS PROGRAM VERSION VOLTAGES TEMPERATURES PRE...

Page 81: ...nostic voltage readings This screen enables the power supply to be quickly read for low or fluctuating voltages without having to use a voltage meter The I O board is only displayed if the I O expansion board option is installed In the Main Menu choose Diagnostics Voltages Motherboard Voltages The Motherboard screen read only is used to display the current voltage readings on the motherboard In th...

Page 82: ...tage readings on the I O expansion board This menu is only displayed if the I O expansion board option is installed In the Main Menu choose Diagnostics Voltages I O Board Voltages MOTHERBOARD 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 RANGE AVG DIAGS ALARM INTERFACE BOARD VOLTAGES 3 3 SUPPLY 3 3 V 5 0 SUPPLY 5 0 V 15 0 SUPPLY 15 0 V 15 0 SUPPL...

Page 83: ...essure The Pressure screen read only displays the current bench pressure The pressure is measured by a pressure transducer In the Main Menu choose Diagnostics Pressure Flows The Flows screen read only displays the current flow rate through Cell A and Cell B These flows are measured by internal flow sensors For more information see Chapter 1 Operations In the Main Menu choose Diagnostics Flows TEMP...

Page 84: ... of the two cells In the Main Menu choose Diagnostics Cell A B O3 Intensities The Intensities screen read only displays the current intensity in Cell A and Cell B in Hertz These intensities are read by detectors A and B respectively In the Main Menu choose Diagnostics Intensities FLOWS CELL A 0 608 LPM CELL B 0 612 LPM RANGE AVG DIAGS ALARM O3 PPB 600 CELL A 598 CELL B 602 RANGE AVG DIAGS ALARM IN...

Page 85: ...ys the 8 raw analog voltage readings if the I O expansion board option is installed In the Main Menu choose Diagnostics Analog Input Voltages Digital Inputs The Digital Inputs screen read only displays the state of the 16 digital inputs In the Main Menu choose Diagnostics Digital Inputs ANALOG INPUT READINGS CO 10 2 PPM SO2 18 2 PPB CO2 250 PPM FL1 20 42 LPM WND 9 86 V FL2 1 865 LPM IO7 0 0 Vª RAN...

Page 86: ...a number of digital to analog converter 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 DIGITAL INPUTS INPUT 1 1 INPUT 2 1 INPUT 3 1 INPUT 4 1 INPUT 5 1 INPUT 6 1 INPUT 7 1ª RANGE AVG DIAGS ALARM RELAY STATE OUTPUT 1 0 OUTPUT 2 0 OUTPUT 3...

Page 87: ...nel 1 6 or Current Channel 1 6 Press or to set output Press to reset to normal Instrument Configuration The Instrument Configuration screen displays information on the hardware configuration of the calibrator Note If the calibrator is in service mode pressing on the item will toggle it yes or no with the exception of purchased options such as dilution and auto calibration In the Main Menu choose D...

Page 88: ...e how many alarms have occurred If no alarms are detected the number zero is displayed To see the actual reading of an item and its minimum and maximum limits move the cursor to the item and press Items displayed are determined by the options installed The zero or span check is visible only if the zero span check or auto calibration options are enabled The O3 lamp temperature and ozonator level 1 ...

Page 89: ...p Temp Min and Max O3 Lamp Temperature Limits The Minimum O3 Lamp Temperature alarm limit screen is used to change the minimum O3 Lamp temperature alarm limit The minimum and maximum O3 Lamp temperature screens function the same way In the Main Menu choose Alarms O3 Lamp Temp Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value ALARMS ALARMS DET...

Page 90: ...creen and in the Main Menu In the Main Menu choose Alarms Lamp Temp Min and Max Lamp Temperature Limits The Minimum Lamp Temperature alarm limit screen is used to change the minimum lamp temperature alarm limit The minimum and maximum lamp temperature screens function the same way In the Main Menu choose Alarms Lamp Temp Min or Max Use and to increment or decrement the numeric value Press to save ...

Page 91: ...reen and in the Main Menu In the Main Menu choose Alarms Bench Temp Min and Max Bench Temperature Limits The Minimum Bench Temperature alarm limit screen is used to change the minimum bench temperature alarm limit The minimum and maximum bench temperature screens function the same way In the Main Menu choose Alarms Bench Temp Min or Max Use and to increment or decrement the numeric value Press to ...

Page 92: ... Run screen and in the Main Menu In the Main Menu choose Alarms Pressure Min and Max Pressure Limits The Minimum Pressure alarm limit screen is used to change the minimum pressure alarm limit The minimum and maximum pressure screens function the same way In the Main Menu choose Alarms Pressure Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value...

Page 93: ... and in the Main Menu The Flow B screen functions the same way In the Main Menu choose Alarms Flow A or Flow B Min and Max Flow Limits The Minimum Flow A alarm limit screen is used to change the minimum flow A alarm limit The minimum and maximum flow A and flow B screens function the same way In the Main Menu choose Alarms Select Flow Min or Max Use and to increment or decrement the numeric value ...

Page 94: ...he Run screen and in the Main Menu In the Main Menu choose Alarms Intensity A or Intensity B Min and Max Intensity Limits The Minimum Intensity A alarm limit screen is used to change the minimum intensity A alarm limit The minimum and maximum intensity A and intensity B screens function the same way In the Main Menu choose Alarms Select Intensity Min or Max Use and to increment or decrement the nu...

Page 95: ... 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 O3 Concentration Min and Max O3 Concentration Limits The Minimum O3 Concentration alarm limit screen is used to change the minimum O3 concentration alarm limit The minimum and maximum O3 concentration alarm limit screens function the same way In the Main Menu choose ...

Page 96: ...e Alarms O3 Concentration MinTrigger Press to toggle and set the minimum trigger to floor or ceiling Service Menu The Service menu appears only when the calibrator is in the service mode To put the calibrator into service mode In the Main Menu choose Instrument Controls Service Mode Advanced diagnostic functions are included in the service mode Meaningful data should not be collected when the cali...

Page 97: ...ts In the Main Menu choose Service Pressure Check Sample Pressure The Sample Pressure screen read only displays the pressure of the sample gas in Cell B In the Main Menu choose Service Pressure Check Sample Pressure SERVICE PRESSURE CHECK LAMP SETTING DETECTOR CALIBRATION INTENSITY CHECK O3 RESPONSE COEFFICIENT MANUAL O3 LAMP SETTING PRESSURE CALIBRATION ª RANGE AVG DIAGS ALARM FLOW A CALIBRATION ...

Page 98: ...o flow in Cell B The flow rate for Cell B drops to zero and the pressure reading should drop below 390 mmHg in less than 20 seconds This indicates the effectiveness of the internal pump After 20 seconds if the pressure is greater than 390 mmHg or the flow is greater than 0 010 LPM the words PUMP PROBLEM DETECTED appears After 20 seconds if the pressure is less than 390 mmHg and the flow is less th...

Page 99: ...rement the numeric value Press to save the new lamp setting Detector Calibration The Detector Calibration screen is used to set the calibration factors for detector A and detector B Calibration factors are computed so that both detectors read 100 000 Hz on zero air If either detector reads lower than 75 000 Hz or higher than 125 000 Hz this calibration will not be successful It is crucial that the...

Page 100: ...In the Main Menu choose Service Intensity Check Intensity A B Check The Intensity A Reference Gas screen read only switches the solenoid valves so that reference gas is flowing through Cell A The intensity and noise reading are displayed The Intensity B Reference Gas screen functions the same way Also the Intensity A and Intensity B Sample Gas screens function the same way only with sample gas ins...

Page 101: ...e ozonator option is installed For more information on the service mode see Service Mode earlier in this chapter Note This adjustment should only be performed by an instrument service technician In the Main Menu choose Service O3 Response Coefficient Use the and to increment or decrement the numeric value Press to save the new coefficient Manual O3 Lamp Setting The Manual O3 Lamp Setting screen is...

Page 102: ...ting Pressure Calibration The Pressure Calibration menu is used to calibrate the pressure sensor to zero span or restore factory default values The pressure calibration is visible only when the calibrator is in service mode For more information on the service mode see Service Mode earlier in this chapter The pressure sensor s zero counts and span slope are displayed on the menu Note This adjustmen...

Page 103: ... set the pressure sensor calibration span point Note The plumbing going to the pressure sensor should be disconnected so the sensor is reading ambient pressure before performing the span calibration 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 Use and ...

Page 104: ...libration The Flow A Calibration menu is used to calibrate the flow A sensor to zero span or restore factory default values The flow A calibration is visible only when the calibrator is in service mode For more information on the service mode see Service Mode earlier in the chapter The Flow B Calibration menu functions the same way Note This adjustment should only be performed by an instrument ser...

Page 105: ...ow reading as the zero reading Calibrate Flow Span The Calibrate Flow A Span screen allows the user to view and set the flow sensor calibrate span point The calibrate Flow B Span screen functions the same way 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 Select Flow Cali...

Page 106: ...es when pressed after Temperature Calibration The Temperature calibration screen allows the user to view and set the ambient temperature sensor calibration The temperature calibration is visible only when the calibrator 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 technicia...

Page 107: ...action zero or span The analog output calibration is visible only when the calibrator 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 In the Main Menu choose Service Analog Out Calibration CALIBRATE AMBIENT TEMP CURRENTLY 32 3 o C SET TO 030 0 o C MOVE CURSOR ª CHAN...

Page 108: ...ic value Press to save the value Analog Output Calibrate Full Scale The Analog Output Calibrate Full Scale screen allows the user to calibrate the full scale state of the selected analog output The operator must connect a meter to the output and adjust output until it reads the value shown in the set output to field In the Main Menu choose Service Analog Out Calibration Select Channel Calibrate Fu...

Page 109: ... 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 In the Main Menu choose Service Analog Input Calibration ANALOG OUTPUT CAL SPAN CONNECT METER TO OUTPUT SELECTED OUTPUT V1 SET TO 3697 SAVE VALUE ª INC DEC SET OUTPUT TO 10 V RANGE AVG DIAGS ALARM ANALOG INPUT CAL INP...

Page 110: ...cale The Analog Input Calibration Full Scale screen allows the user to calibrate the full scale state of the selected analog input In the Main Menu choose Service Analog Input Calibration Select Channel Calibrate Full Scale Hook up a voltage source of 10 V to the analog input channel Use the and to increment or decrement the numeric value Press to save the value ANALOG INPUT CAL ZERO DISCONNECT SE...

Page 111: ...User Defaults screen is used to reset the user calibration and configuration values to factory defaults The restore default user is visible only when the calibrator is in service mode For more information on the service mode see Service Mode earlier in the chapter In the Main Menu choose Service Restore User Defaults Press to warn and enable restore with Press to overwrite all user settings with f...

Page 112: ... is shown if the calibrator is unlocked and the password not set In the Main Menu choose Password Set Password Press to enter password and disable instrument lock Lock Instrument The Lock Instrument screen is used to lock the calibrator s front panel so users can not change any settings from the front panel The lock instrument is shown if the calibrator is unlocked and the password set In the Main...

Page 113: ...rd Remove Password The Remove Password screen is used to erase the current password and disable password protection The remove password is shown if the calibrator is unlocked and the password set In the Main Menu choose Password Remove Password Press to remove password and returns to main menu LOCK FRONT PANEL xxxPRESSING ENTER WILLxxxx PREVENT USER FROM CHANGING xCONFIG FROM FRONT PANELxx LOCK AN...

Page 114: ...e Unlock Instrument is shown if the calibrator is locked In the Main Menu choose Password Unlock Instrument Press to disable instrument lock and returns to main menu REMOVE PASSWORD xxxPRESSING ENTER WILLxxxx xREMOVE CURRENT PASSWORDxx xxxAND DISABLE LOCKINGxxxx REMOVE PASSWORD RANGE AVG DIAGS ALARM ENTER THE PASSWORD ASSSSSSSSS ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 SAVE RANGE AVG DIAGS...

Page 115: ... includes the sample pump and solenoid valves which have a limited life Other operations such as cleaning the optics and checking the calibration of the pressure should be performed on a regular basis This chapter includes the following maintenance information and replacement procedures Safety Precautions on page 4 2 Replacement Parts on page 4 2 Outside Case Cleaning on page 4 2 Optical Bench Cle...

Page 116: ...an the optical bench 1 Turn off the power and disconnect the power line WARNING If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired The Model 49i Primary Standard is supplied with a three wire grounding cord Under no circumstances should this grounding system be defeated Equipment Damage Some internal components can be...

Page 117: ...cleaned by removing the windows from the bench The windows on the detector side can be removed by removing the detector block and carefully removing the windows The windows on the source side can be removed by removing the source block to gain access to the windows It is recommended that the Model 49i Primary Standard be recalibrated if the optical bench has been completely disassembled Always lea...

Page 118: ...tes either a dirty cell or low lamp output In addition to degrading the measured detector frequency dirt in the cells can decompose the ozone and give erroneous readings Therefore the cells should first be cleaned and the frequency re measured Increasing Lamp Output If the frequencies are still low the lamp output can be increased by using the Lamp Setting screen in the Service mode If the frequen...

Page 119: ...uld be below 4 0 Hz for a fully warmed up lamp see the Troubleshooting chapter if the noise is excessive Capillary Service The capillaries normally only require inspection when performance indicates there may be a flow problem Use the following procedure to service the capillary Figure 4 1 Equipment Required Capillary Wire less than 0 015 inch OD 1 Turn instrument OFF unplug the power cord and rem...

Page 120: ...following procedure to rebuild the pump Figure 4 2 To replace the pump see Pump Replacement in the Servicing chapter Equipment Required Flatblade screwdriver Pump rebuild kit flapper valve and diaphragm 1 Turn instrument OFF unplug the power cord and remove the cover 2 Loosen the fittings and remove both lines going to the pump Capillary Capillary Equipment Damage Some internal components can be d...

Page 121: ...ve diaphragm 5 Assemble the pump by following the previous steps in reverse make sure the 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 Checkout procedure described in this chapter Leak Test and Pump Checkout Use the following procedures to test for system leaks and checkout the pump External...

Page 122: ...ss to move the cursor to Pressure and press to display the Pressure screen The pressure reading should drop to less than 250 mm Hg If the pump diaphragm is in good condition and the capillary is not blocked it should take less than 20 seconds from the time the inlet is plugged to the time the reading below 250 mm Hg is obtained If a leak is suspected carefully tighten each fitting until the leak i...

Page 123: ... indicates an imbalance The imbalance can be caused by a dirty cell dirty lines to that cell or by a leaky valve Refer to the Solenoid Leak Test procedure that follows to check for a leaky solenoid To check if the imbalance is caused by an absorption cell interchange the cells If the imbalanced side switches the imbalance is caused by the cell Solenoid Leak Test Use the following procedure to test...

Page 124: ...ormally closed solenoid port 9 Plug the solenoid power line into the appropriate connector on the measurement interface board Make sure the solenoid is activated by choosing Pressure from the Diagnostics menu 10 Note the pressure as PNC the solenoid is faulty 11 The solenoid is faulty if either PNO or PNC is greater than the pressure determined in the External Leaks section described previously ...

Page 125: ...meters and functions that are useful when making adjustments or diagnosing problems The Technical Support Department at Thermo Fisher Scientific can also be consulted in the event of problems See Service Locations at the end of this chapter for contact information In any correspondence with the factory please note both the serial number and program number of the instrument This chapter provides th...

Page 126: ...volts Check instrument fuses Power supply Check power supply voltages using a voltmeter Cell A or B frequency high Light adjustment Readjust Lamp Setting From the Service Mode menu choose Lamp Setting Defective detector Interchange detectors at Measurement Interface Board connectors to determine if detector is defective Cell A and B frequency high Lamp supply Check for 1 7 volt peak to peak wavefo...

Page 127: ...material in cells Clean cells Lamp failure Check for 1 7 volt peak to peak waveform at lamp current check point on Lamp Power Supply Board 15 volt power supply Check 15 volts From the Diagnostics menu choose Voltages Pressure transducer does not hold calibration Pressure transducer Replace pressure transducer Output signal noisy Recorder Replace or repair recorder Sample is varying Run instrument ...

Page 128: ...pump repair kit if necessary Refer to Preventive Maintenance chapter in this manual Check that capillaries are properly installed and O rings are in good shape Replace if necessary Check flow system for leaks Alarm Flow A Alarm Flow B Flow low Check sample capillary 0 015 inch ID for blockage Replace as necessary If using sample particulate filter make sure it is not blocked Disconnect sample part...

Page 129: ...otherboard Status Alarm Interface Status Alarm I O Exp Status Internal cables not connected properly Board is defective Check that all internal cables are connected properly Recycle AC power to instrument If still alarming change board Table 5 2 Troubleshooting Alarm Messages continued Alarm Message Possible Cause Action ...

Page 130: ...n Electronics 2 Pin J3 DIGITAL OUTPUTS 24V D C P O W E RSU P P LY MO THE RBO AR D D IG ITALO U TP U T BO AR D I OE XP ANSIO N BO AR D J14 J3 F R O NT P ANE L BO AR D J1 LCD DISPLAY KEY PANEL J18 J2 J4 J3 J1 J10 J17 PJ1 PJ3 PJ2 FRONT PANEL POWER SW 14 Pin 3 Pin 8 Pin 34 Pin 3 Pin 2 Pin 3 Pin 3 Pin 3 Pin J1 3 Pin J4 3 Pin 8 Pin 11 Pin 2 Pin EXPANSION RS485 ANALOG OUTPUTS DIGITAL INPUTS P1 A P1 B RS2...

Page 131: ...CTRONICS J5 6 Pin J2 J1 2 Pin J3 OZONATOR POWER SUPPLY 8 Pin J6 6 Pin J2 J1 2 Pin J3 PHOTOMETER POWER SUPPLY 8 Pin J8 FLOW B 5 Pin J10 4 Pin CH B DETECTOR J3 J9 CH A DETECTOR 4 Pin J16 OZ SOL J11 J15 J14 J13 ZERO SPAN SOL BENCH TEMP THERM 2 Pin SAMPLE SOL 2 Pin REF SOL J17 2 Pin 2 Pin 2 Pin 2 Pin FAN J7 J12 FLOW A 5 Pin PRESSURE 4 Pin J2 PUMP AC AC 3 Pin J1 J4 49i MEASUREMENT INTERFACE BOARD LAMP ...

Page 132: ...Pin Descriptions Connector Label Reference Designator Pin Signal Description INTF DATA J1 1 Ground 2 RS485 to Interface Board 3 RS485 to Interface Board 10 BASE T J2 1 Ethernet Output 2 Ethernet Output 3 Ethernet Input 4 NC 5 NC 6 Ethernet Input 7 NC 8 NC EXPANSION BD J3 1 5V 2 24V 3 24V 4 Ground 5 Ground 6 Ground 7 RS485 to Expansion Board 8 RS485 to Expansion Board SPARE DATA J4 1 5V 2 24V 3 24V...

Page 133: ...ltage Output 3 16 Ground 17 Analog Voltage Output 5 18 Ground 19 Ground 20 Power Fail Relay COM 21 Power Fail Relay N O Contact 22 Ground 23 TTL Input 3 24 TTL Input 4 25 TTL Input 6 26 Ground 27 TTL Input 9 28 TTL Input 11 29 TTL Input 12 30 TTL Input 14 31 TTL Input 16 32 Ground 33 Analog Voltage Output 2 34 Analog Voltage Output 4 35 Ground 36 Analog Voltage Output 6 Table 5 3 Motherboard Conne...

Page 134: ...2 24V 3 24V 4 Ground 5 Ground 6 Ground 7 SPI Reset 8 SPI Input 9 SPI Output 10 SPI Board Select 11 SPI Clock EXT RS485 J15 1 RS485 to Rear Panel 2 RS485 to Rear Panel 3 5V 4 5V 5 5V 6 Ground 7 Ground 8 Ground 9 NC 10 NC 11 24V 12 24V 13 24V 14 24V 15 24V 24V MONITOR J17 1 24V Power Monitor 2 Ground Table 5 3 Motherboard Connector Pin Descriptions continued Connector Label Reference Designator Pin ...

Page 135: ...D Signal 12 LD6 LCD Signal 13 LD2 LCD Signal 14 LD7 LCD Signal 15 LD3 LCD Signal 16 LCD Bias Voltage 17 5V 18 Ground 19 Ground 20 LCD_ONOFF LCD Signal 21 Keypad Row 2 Input 22 Keypad Row 1 Input 23 Keypad Row 4 Input 24 Keypad Row 3 Input 25 Keypad Col 2 Select 26 Keypad Col 1 Select 27 Keypad Col 4 Select 28 Keypad Col 3 Select 29 Ground 30 Ground 31 Ground 32 Ground Table 5 3 Motherboard Connect...

Page 136: ...485 OUT 8 Serial Port 1 CTS RS485 IN 9 NC RS232 RS485 B P1 B 1 NC 2 Serial Port 2 RX RS485 IN 3 Serial Port 2 TX RS485 OUT 4 NC 5 Ground 6 NC 7 Serial Port 2 RTS RS485 OUT 8 Serial Port 2 CTS RS485 IN 9 NC AC IN PJ1 1 AC HOT 2 AC NEUT 3 AC Ground AC 24VPWR PJ2 1 AC HOT 2 AC NEUT 3 AC Ground AC INTF BD PJ3 1 AC HOT 2 AC NEUT 3 AC Ground Table 5 3 Motherboard Connector Pin Descriptions continued Con...

Page 137: ...nal 4 Ground 5 Ground 6 LLP LCD Signal 7 LFLM LCD Signal 8 LD4 LCD Signal 9 LD0 LCD Signal 10 LD5 LCD Signal 11 LD1 LCD Signal 12 LD6 LCD Signal 13 LD2 LCD Signal 14 LD7 LCD Signal 15 LD3 LCD Signal 16 LCD Bias Voltage 17 5V 18 Ground 19 Ground 20 LCD_ONOFF LCD Signal 21 Keypad Row 2 Input 22 Keypad Row 1 Input 23 Keypad Row 4 Input 24 Keypad Row 3 Input 25 Keypad Col 2 Select 26 Keypad Col 1 Sele...

Page 138: ...l 6 LFLM_5V LCD Signal 7 NC 8 LLP_5V LCD Signal 9 LCLK_5V LCD Signal 10 5V 11 Ground 12 25V 13 LCD Bias Voltage 14 Ground KEYBOARD J3 1 Keypad Row 1 Input 2 Keypad Row 2 Input 3 Keypad Row 3 Input 4 Keypad Row 4 Input 5 Keypad Col 1 Select 6 Keypad Col 2 Select 7 Keypad Col 3 Select 8 Keypad Col 4 Select LCD BACKLIGHT J4 1 5V 2 NC 3 Ground Table 5 4 Front Panel Board Connector Pin Diagram continue...

Page 139: ...alog Voltage Input 3 4 Ground 5 Analog Voltage Input 4 6 Analog Voltage Input 5 7 Analog Voltage Input 6 8 Ground 9 Analog Voltage Input 7 10 Analog Voltage Input 8 11 Ground 12 NC 13 Current Output Return 14 Ground 15 Current Output 1 16 Current Output Return 17 Current Output 2 18 Current Output Return 19 Current Output 3 20 Current Output Return 21 Current Output 4 22 Current Output Return 23 C...

Page 140: ...ound 6 Ground 7 SPI Reset 8 SPI Input 9 SPI Output 10 SPI Board Select 11 SPI Clock DIGITAL OUTPUTS J2 1 Relay 1 Contact a 2 Relay 2 Contact a 3 Relay 3 Contact a 4 Relay 4 Contact a 5 Relay 5 Contact a 6 Relay 6 Contact a 7 Relay 7 Contact a 8 Relay 8 Contact a 9 Relay 9 Contact a 10 Relay 10 Contact a 11 NC 12 Solenoid Drive Output 1 13 Solenoid Drive Output 2 14 Solenoid Drive Output 3 Table 5 ...

Page 141: ...25 Relay 6 Contact b 26 Relay 7 Contact b 27 Relay 8 Contact b 28 Relay 9 Contact b 29 Relay 10 Contact b 30 24V 31 24V 32 24V 33 24V 34 24V 35 24V 36 24V 37 24V Table 5 7 Measurement Interface Board Connector Pin Descriptions Connector Label Reference Designator Pin Signal Description PHOTOMETER J6 1 Photometer Lamp Intensity Control Voltage Output 2 Photometer Lamp Intensity Control Voltage Inpu...

Page 142: ...V FLOW B J8 1 Sample Flow B Sensor Input 2 Ground 3 15V 4 15V 5 Ground OZONATOR J5 1 Ozonator Lamp Intensity Control Voltage Output 2 Ozonator Lamp Intensity Control Voltage Input 3 Ozonator Heater Thermistor 4 24V 5 Ground 6 Ozonator Lamp On off Control 7 Ground 8 Ground CHA J9 1 15V 2 15V 3 Ground 4 Measurement Frequency A CHB J10 1 15V 2 15V Table 5 7 Measurement Interface Board Connector Pin D...

Page 143: ...N J17 1 24V 2 Ground AC PUMP J2 1 AC HOT 2 AC NEUT Switched 3 AC Ground Z S SOL J13 1 24V 2 Zero Span Solenoid Control SAMPLE SOL J14 1 24V 2 Sample Solenoid Control REF J15 1 24V 2 Reference Solenoid Control OZ SOL J16 1 24V 2 Ozone Solenoid Control Table 5 8 Ozonator Power Supply Connector Pin Descriptions Connector Label Reference Designator Pin Signal Description LAMP J1 1 Ozonator Lamp Voltag...

Page 144: ... Ground 6 Ozonator Lamp On off Control 7 Ground 8 Ground Table 5 9 Photometer Power Supply Connector Pin Descriptions Connector Label Reference Designator Pin Signal Description LAMP J1 1 Photometer Lamp Voltage Out 2 Photometer Lamp Voltage Return LAMP HEATER J2 1 Ground 2 Photometer Lamp Thermistor 1 3 Photometer Lamp Heater Control 4 Ground 5 24V Heater Current Sense 6 Photometer Lamp Thermisto...

Page 145: ...tors 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 3 Photometer Heater Thermistor 4 24V 5 Ground 6 Photometer Lamp On off Control 7 Ground 8 Ground Table 5 9 Photometer Power Supply Connector Pin Descriptions continued Connector Label Reference Designa...

Page 146: ...Troubleshooting Service Locations 5 22 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific ...

Page 147: ...e useful when making adjustments or diagnosing problems For additional service assistance see Service Locations at the end of this chapter This chapter includes the following parts information testing adjustment and calibration procedures and component replacement procedures Safety Precautions on page 6 3 Replacement Parts List on page 6 4 Firmware Updates on page 6 4 Replacement Parts List on pag...

Page 148: ...on page 6 22 LCD Module Replacement on page 6 23 Optical Bench Replacement on page 6 25 Photometer Board Replacement on page 6 26 Photometer Lamp Replacement on page 6 27 Photometer Lamp Voltage Adjustment on page 6 28 Sample Reference Solenoid Replacement on page 6 29 Detector Replacement on page 6 30 Pressure Transducer Replacement on page 6 31 Pressure Transducer Calibration on page 6 32 Flow T...

Page 149: ...ged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Figure 6 1 If an antistatic wrist strap is not available be sure to touch a grounded metal object before touching any internal components When the instrument is unplugged the chassis is not at earth ground Handle all printed circuit boards by the edges Do not rem...

Page 150: ...isplayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls press to scroll to Service Mode and press The Service Mode screen appears b Press to toggle the Service Mode to ON c Press to return to the Main Menu d Return to the procedure Replacement Parts List Table 6 1 lists the replacement parts for the Model 49i Primary Standard ma...

Page 151: ...bly 102443 00 Sample Reference Solenoid Valve 102455 00 Air Regulator Assembly Optional 102439 00 Optical Bench Assembly 8592 Detector Assembly 102472 01 Lamp Heater Assembly 8540 Photometer Lamp 100554 00 Photometer Board 101426 00 Pump 110VAC w Plate and Fittings 102464 01 Pump Zero Air Supply 110V Optional 102464 02 Pump Zero Air Supply 220V Option 101055 00 AC Receptacle Assembly 100907 00 Fan...

Page 152: ...054 00 Motherboard to Front Panel Board 101035 00 DC Power Supply AC Input 101033 00 AC from Receptacle 101377 00 AC to Power Switch 101055 00 Main AC Receptacle Assembly 101706 00 Measurement Interface Board to Photometer Board 102446 00 Measurement Interface Board to Ozonator Board 101267 00 Fan Power Cable Table 6 3 External Device Connection Components Part Number Description 102562 00 Termina...

Page 153: ...ut Solenoid Assembly Lamp Heater Assembly Photometer Lamp Pump Flow Transducer A Flow Transducer B Detector Assembly B Detector Assembly A Pressure Transducer Optical Bench Fan Sample Valve Power Supply I O Expansion Board Optional Digital Output Board Motherboard Reference Valve Ozonator Measurement Interface Board Ozonator Board Photometer Board ...

Page 154: ...nel see Figure 6 3 Figure 6 3 Removing the Measurement Bench and Lowering the Partition Panel Equipment Required Philips screwdriver 1 Turn instrument OFF and unplug the power cord 2 If the instrument is mounted in a rack remove it from the rack 3 Remove the cover Pass Through Connectors Partition Panel Loosen Captive Screw Remove Screw Remove Screws Remove Screw REMOVE SCREWS SLIDE BENCH OUT LOWE...

Page 155: ...n the captive screw at the rear of the measurement bench and pull the measurement bench from the rear of the case 10 Remove the screw at the top rear of the partition panel securing the top of partition panel to the measurement bench and lower the panel being careful not to put excessive tension on the cables 11 Replace the measurement bench by following the previous steps in reverse Fuse Replacem...

Page 156: ...n instrument OFF unplug the power cord and remove the cover 2 Disconnect pump power line from AC PUMP connector on the measurement interface board Figure 6 4 Replacing the Pump 3 Remove both lines from pump 4 Loosen the four captive screws on the mounting plate and remove the pump Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded an...

Page 157: ...unplug the power cord and remove the cover 2 Remove the fan guard from the fan and remove the filter 3 Pull the power connector off the fan 4 Remove the four fan mounting screws and remove the fan 5 Install a new fan following the previous steps in reverse Figure 6 5 Replacing a Fan Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded ...

Page 158: ...identifies the associated channels 2 From the Main Menu press to scroll to Diagnostics press to scroll to Test Analog Outputs and press The Test Analog Outputs screen displays 3 Press to scroll to the channel corresponding to the rear panel terminal pins where the meter is connected and press The Set Analog Outputs screen displays 4 Press to set the output to zero The Output Set To line displays Z...

Page 159: ... Press to reset the analog outputs to normal Figure 6 6 Rear Panel Analog Input and Output Pins Analog Voltage Outputs Current Outputs Analog Voltage Inputs Table 6 4 Analog Output Channels and Rear Panel Pin Connections Voltage Channel Pin Current Channel Pin 1 14 1 15 2 33 2 17 3 15 3 19 4 34 4 21 5 17 5 23 6 36 6 25 Ground 16 18 19 35 37 Current Output Return 13 16 18 20 22 24 ...

Page 160: ...the analog output pins and Table 6 4 identifies the associated channels 2 From the Main Menu press to scroll to Service press to scroll to Analog Out Calibration and press The Analog Output Cal screen displays Note If Service is not displayed refer to Accessing the Service Mode on page 6 4 then return to the beginning of this step 3 At the Analog Output Cal screen press to scroll to the voltage ch...

Page 161: ...librate the analog inputs after replacing the optional I O expansion board These procedures include selecting analog input channels calibrating them to zero volts and then calibrating them to full scale using a known voltage source Calibrating the Input Channels to Zero Volts Use the following procedure to calibrate the input channels to zero volts 1 From the Main Menu press to scroll to Service p...

Page 162: ...put channels to full scale by applying a known voltage to the channels Equipment Required DC voltage source greater than 0 volts and less than 10 volts 1 Connect the known DC voltage source to the input channel 1 8 to be calibrated Figure 6 6 shows the analog input pins and Table 6 5 identifies the associated channels 2 From the Main Menu press to scroll to Service press to scroll to Analog Input ...

Page 163: ...e procedure is to connect an accurately known 10K resistor to the thermistor input TEMP on the measurement interface board and enter the temperature reading A 1 C change corresponds to a 5 change in resistance thus this alternative procedure can be quite accurate as a check however it clearly is not NIST traceable 3 From the Main Menu press to scroll to Service press to scroll to Temperature Calib...

Page 164: ...e the current outputs and the analog voltage inputs See the Analog Output Calibration procedure and the Analog Input Calibration procedure in this chapter Equipment Required I O expansion board Nut driver 3 16 inch 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 3 Remove the two standoffs hol...

Page 165: ...ed earlier in this chapter Figure 6 7 Replacing the I O Expansion Board Optional Figure 6 8 Rear Panel Board Connectors Digital Output Board Replacement Use the following procedure to replace the digital output board Figure 6 7 Equipment Required I O Expansion Board Opt Digital Output Board Motherboard Mounting Studs Motherboard Support Bracket Motherboard Digital Output Board I O Expansion Board ...

Page 166: ...t board from the mounting studs and remove the board 6 To install the digital output board follow previous steps in reverse Motherboard Replacement Use the following procedure to replace the motherboard Figure 6 7 Equipment Required Motherboard Philips screwdriver Nut driver 3 16 inch 1 Turn instrument OFF unplug the power cord and remove the cover Equipment Damage Some internal components can be ...

Page 167: ...board from motherboard support bracket and remove the motherboard 7 To install the motherboard follow previous steps in reverse 8 Calibrate the analog voltage outputs as described earlier in this chapter all ranges Measurement Interface Board Replacement Use the following procedure to replace the measurement interface board Figure 6 9 Equipment Required Measurement interface board Philips screwdri...

Page 168: ... Figure 6 9 Replacing the Measurement Interface Board 5 To install the measurement interface board follow previous steps in reverse 6 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter 7 Calibrate the pressure transducer flow transducers and bench temperature sensor as described earlier in this chapter Front Panel Board Replace...

Page 169: ...ff the slotted bottom support 4 Replace the front panel board by following previous steps in reverse Figure 6 10 Replacing the Front Panel Board and the LCD Module LCD Module Replacement Use the following procedure to replace the LCD module Figure 6 10 Equipment Required Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic w...

Page 170: ...kin or clothes If the liquid crystal contacts your skin or clothes wash it off immediately using soap and water 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 Do not remove the LCD panel or frame from the LCD module The LCD polarizing plate is very fragile ...

Page 171: ...ws from the photometer lamp access hole cover on the rear panel and remove the cover 4 Loosen the captive screws 4 securing the optical bench to the floor plate Figure 6 11 and remove the bench by first moving the photometer slightly towards the rear through the lamp access hole and then lifting up and towards the front 5 Perform the previous steps in reverse to install the new optical bench 6 Cal...

Page 172: ...ard 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the connection cables from the board Note the locations to facilitate reconnection Photometer Lamp Lamp Heater Access Port Cell B IN Absorption Cell B Access Port Cell B OUT Detector B Access Port Cell A IN Input Block Absorption Cell A Access Port Cell A OUT Output Block Detector A Captive Screws 4 Equipment Damage Some...

Page 173: ... following procedure to replace the photometer lamp 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect the photometer lamp cable from the LAMP connector on the photometer board 3 Remove the two retaining screws from the rear panel access hole cover on the rear panel and remove the cover 4 Slide the insulation off the end of the lamp 5 Loosen Allen screw on lamp clamp 6 L...

Page 174: ...insulation back on the end of the lamp 11 Replace access hole cover and secure with the two retaining screws 12 Re install the instrument cover 13 Reconnect power and turn instrument ON 14 After lamp has stabilized approximately 15 minutes adjust the lamp voltage in the Service Mode menu until the output from each detector is about 100 kHz Photometer Lamp Voltage Adjustment Use the following proce...

Page 175: ...replace a sample reference solenoid valve Equipment required Solenoid Flatblade screwdriver Open end wrench 5 8 inch 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect the Sample and Ref connection cables from the measurement interface board 3 Remove the plumbing from the solenoids 4 Loosen the four captive screws and lift out the solenoids and the solenoid plate 5 Remov...

Page 176: ...tector Figure 6 11 Equipment Required Detector assembly Allen wrench 9 64 inch and 1 16 inch 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect the detector electrical connections CHA and CHB from the measurement interface board 3 Loosen the two screws securing the detector clamping block to the optical bench and remove the clamping block and detectors Figure 6 12 Equipm...

Page 177: ...rument Refer to the Calibration chapter in this manual Pressure Transducer Replacement Use the following procedure to replace the pressure transducer Equipment Required Pressure transducer assembly Philips screwdriver 1 Turn instrument OFF unplug the power cord and remove the cover Clamping Block Clamping Block Screws 2 Detectors Detector Screws 2 Equipment Damage Some internal components can be d...

Page 178: ...sducer Calibration procedure that follows Pressure Transducer Calibration Use the following procedure to calibrate the pressure transducer Equipment Required Vacuum pump Note An error in the zero setting of the pressure transducer does not introduce a measurable error in the output concentration reading Therefore if only a barometer is available and not a vacuum pump only adjust the span setting W...

Page 179: ...connect the tubing from the pressure transducer and connect a vacuum pump known to produce a vacuum less than 1 mm Hg 3 From the Main Menu press to scroll to Service press to scroll to Pressure Calibration and press The Pressure Sensor Cal screen appears Note If Service is not displayed refer to Accessing the Service Mode on page 6 4 then return to the beginning of this step 4 At the Pressure Sens...

Page 180: ...iver Wrench 5 16 inch 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect plumbing from the flow transducer 3 Disconnect the flow transducer cable FLOW A or FLOW B from the measurement interface board 4 Loosen the retaining nuts 2 and remove the faulty flow transducer from the mounting bracket 5 Install the new flow transducer by following the previous steps in reverse 6 ...

Page 181: ...Flow A Sensor Cal is used Note If Service is not displayed refer to Accessing the Service Mode on page 6 4 then return to the beginning of this step 4 At the Flow A Sensor Cal screen press to select Zero The Calibrate Flow A Zero screen appears 5 Wait at least 10 seconds for the zero reading to stabilize then press to save the zero flow value WARNING The service procedures in this manual are restr...

Page 182: ...The Calibrate Flow A Span screen appears 10 Wait at least 10 seconds for the reading to stabilize use and to enter the flow sensor reading and press to save the value 11 Install the cover Ozonator Lamp Replacement Use the following procedure to replace the ozonator lamp Equipment Required Ozonator lamp Allen wrench 7 64 inch 1 Turn instrument OFF unplug the power cord and remove the cover Equipmen...

Page 183: ...zonator housing 6 Slide insulation off of old lamp and slide onto new lamp 7 Carefully slide new lamp into ozonator housing until it bottoms Pull lamp out approximately 1 16 inch to allow for expansion when the lamp warms up and tighten the Allen screws on the clamp 8 Slide the insulation onto lamp against the ozonator assembly 9 Re connect the ozonator LAMP connector to the ozonator board 10 Repl...

Page 184: ...om the ozonator 4 Remove the two screws securing the ozonator to the floor plate and remove the ozonator 5 Remove bottom flange of ozonator housing 6 Remove ozonator lamp heater block from 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 9 Re install th...

Page 185: ...g the ozonator straight up 5 Install new ozonator by following the above procedure in reverse 6 Re install the instrument cover Ozonator Board Replacement Use the following procedure to replace the ozonator board Figure 6 13 Equipment Required Ozonator board Philips screwdriver 1 Turn instrument OFF unplug the power cord and remove the cover Equipment Damage Some internal components can be damaged...

Page 186: ... board from the bottom mounting studs and remove the board 5 To install the new ozonator board follow previous steps in reverse Service Locations For additional assistance service is available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us on the web at www thermo com aqi 1 866 282 0430 Toll Free 1 508 520 0430...

Page 187: ...are on page 7 3 provides an overview of the software organization and detailed information on the software tasks Electronics on page 7 5 describes the system boards assemblies and connectors I O Components on page 7 8 describes the input and output communication functions and components Hardware The Model 49i Primary Standard components include Optical bench with photometer lamp Detector system Fl...

Page 188: ...e measurement interface board for sample measurement computations Flow Transducers Flow transducers monitor the flow of the sample and reference gases and transmit the data to the measurement interface board Pressure Transducer The pressure transducer measures the pressure of the sample gas Solenoid Assembly Lamp Heater Assembly Photometer Lamp Pump Flow Transducer A Flow Transducer B Detector Ass...

Page 189: ...cuits for the photometer lamp Optical Bench Temperature Thermistor The optical bench temperature thermistor is used for maintaining the optical bench at a constant temperature Pump The pump draws the zero air through the optical bench Note Total flows of less than 1 LPM 2 scfh should be avoided since the flush time would be excessive Total flows of greater than 3 LPM should also be avoided since t...

Page 190: ...evel processors once per second to exchange the measurement and control data Monitoring Signals The instrument includes a sample solenoid valve and a reference solenoid valve The instrument can be configured to measure O3 every ten seconds standard cycle or every four seconds fast cycle Every cycle the two solenoid valves switch the sample gas and reference gas streams between the two cells One ce...

Page 191: ...tage and working over the entire operating range 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 Motherboard The motherboard contains the main processor power supplies a sub processor and serves as the communication hub f...

Page 192: ...central connection area for all measurement electronics in the instrument It contains power supplies and interface circuitry for sensors and control devices in the measurement system It sends status data to the motherboard and receives control signals from the motherboard Measurement Interface Board Connectors Connectors located on the measurement interface board include Data communication with th...

Page 193: ...ontrol The lamp is heated to a specific temperature to ensure reliable operation 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 Photometer Lamp Power Supply The photometer lamp power supply i...

Page 194: ...tending back to the motherboard This board also includes signal buffers for the graphics display control signals and a high voltage power supply for the graphics display backlight I O Components External I O is driven from a generic bus that is capable of controlling the following devices Analog output voltage and current Analog input voltage Digital output TTL levels Digital input TTL levels Note...

Page 195: ...common return line Isolated GND Analog Voltage Inputs Optional The optional I O expansion board includes eight analog voltage inputs These inputs are used to gather measurement data from third party devices such as meteorological equipment 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 ra...

Page 196: ...ed in firmware Serial Ports Two serial ports allow daisy chaining so that multiple analyzers may be linked using one PC serial port The standard bi directional serial interface can be configured for either RS 232 or RS 485 The serial baud rate is user selectable in firmware for standard speeds from 1200 to 19 200 baud The user can also set the data bits parity and stop bits The following protocols...

Page 197: ...e connector is male a null modem cable is required Data Format 1200 2400 4800 9600 19200 38400 57600 or 115200 BAUD 8 data bits 1 stop bit no parity All responses are terminated with a carriage return hex 0D Refer to Table 7 1 for the DB9 connector pin configuration RS 485 Connection The instrument uses a four wire RS 485 configuration with automatic flow control SD Refer to Table 7 2 for the DB9 ...

Page 198: ...P address may be configured for static addressing or dynamic addressing set using a DHCP server Any serial port protocols may be accessed over Ethernet in addition to the serial port External Accessory Connector The external accessory connector is not used in the Model 49i Primary Standard This port is used in other models to communicate with smart external devices that may be mounted hundreds of ...

Page 199: ...ystem for generating pollutant free zero gas for O3 monitoring requirements This option includes the pump filter filter holder and Silastic tubing Teflon Particulate Filter A 5 10 micron pore size two inch diameter Teflon element is available for the Model 49i Primary Standard This filter should be installed just prior to the SAMPLE bulkhead When using a filter all calibrations and span checks mus...

Page 200: ... part numbers refer to External Device Connection Components in the Servicing chapter Each kit consists of one six foot cable one terminal block one snap track Note Supporting all of the connections on units with the optional I O expansion board requires two DB37 kits one DB25 kit Cables Table 8 1 identifies the optional individual cables that are available for the instrument and Table 8 2 provide...

Page 201: ... 8 1 through Figure 8 4 Table 8 2 Color Codes for 25 Pin and 37 Pin Cables Pin Color Pin Color 1 BLACK 20 RED BLACK 2 BROWN 21 ORANGE BLACK 3 RED 22 YELLOW BLACK 4 ORANGE 23 GREEN BLACK 5 YELLOW 24 GRAY BLACK 6 GREEN 25 PINK BLACK 7 BLUE End color codes for 25 pin cables continue for 37 pin cables 8 VIOLET 26 PINK GREEN 9 GRAY 27 PINK RED 10 WHITE 28 PINK VIOLET 11 PINK 29 LIGHT BLUE 12 LIGHT GREE...

Page 202: ...c Figure 8 1 Rack Mount Option Assembly 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 Table 8 3 Mounting Options Mounting Type Description ...

Page 203: ...Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 8 5 Figure 8 2 Bench Mounting ...

Page 204: ...8 6 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific Figure 8 3 EIA Rack Mounting ...

Page 205: ...Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 8 7 Figure 8 4 Retrofit Rack Mounting ...

Page 206: ...Optional Equipment Mounting Options 8 8 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific ...

Page 207: ...RMA which may include biohazard decontamination procedures and other product specific handling instructions and c then if applicable Buyer may return the defective Products to Seller with all costs prepaid by Buyer Replacement parts may be new or refurbished at the election of Seller All replaced parts shall become the property of Seller Shipment to Buyer of repaired or replacement Products shall ...

Page 208: ...n prevailing time and materials rates ANY INSTALLATION MAINTENANCE REPAIR SERVICE RELOCATION OR ALTERATION TO OR OF OR OTHER TAMPERING WITH THE PRODUCTS PERFORMED BY ANY PERSON OR ENTITY OTHER THAN SELLER WITHOUT SELLER S PRIOR WRITTEN APPROVAL OR ANY USE OF REPLACEMENT PARTS NOT SUPPLIED BY SELLER SHALL IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH RESPECT TO THE AFFECTED PRODUCTS THE OBLIGATIO...

Page 209: ...le B 1 Measurements on page B 8 describes and gives examples of the measurement commands Alarms on page B 12 describes and gives examples of the alarm commands Diagnostics on page B 17 describes and gives examples of the diagnostic commands Datalogging on page B 17 describes and gives examples of the datalogging commands Calibration on page B 25 describes and gives examples of the calibration comm...

Page 210: ...ia C link commands always enter the concentration values in ppb or μg m3 units For example to set a background value to 20 ppm enter 20000 ppb as the value for the set background command Accessing Streaming Data Streaming data is sent out the serial port or the Ethernet port on a user defined periodic basis Streaming data over Ethernet is only generated when a connection is made on TCP port 9881 C...

Page 211: ...orts sets netmask address B 37 alarm bench lamp temp max Reports the bench lamp temperature alarm maximum value current setting B 12 alarm bench lamp temp min Reports the bench lamp temperature alarm minimum value current setting B 12 alarm bench temp max Reports the bench lamp temperature alarm maximum value current setting B 13 alarm bench temp min Reports the bench temperature alarm minimum val...

Page 212: ...ue current setting B 16 alarm sample flow a min Reports the sample flow a alarm minimum value current setting B 16 alarm sample flow b max Reports the sample flow b alarm maximum value current setting B 16 alarm sample flow b min Reports the sample flow b alarm minimum value current setting B 16 alarm trig conc o3 Reports the current setting of the concentration O3 alarm trigger action minimum ala...

Page 213: ...tic voltage level for I O expansion board B 17 diag volt mb Reports diagnostic voltage level for motherboard B 17 diag volt mib Reports diagnostic voltage level for measurement interface board B 17 dig in Reports status of the digital inputs B 41 din Reports sets digital input channel and active state B 41 do down Simulates pressing down pushbutton B 28 dout Reports sets digital output channel and...

Page 214: ...nc Reports sets the current custom level 4 concentration B 33 l5 conc Reports sets the current custom level 5 concentration B 33 lamp Reports sets the current photometer lamp setting B 10 lamp setting Reports the current photometer lamp setting B 10 lamp temp Reports the current bench lamp temperature B 10 lamp voltage bench Reports the bench lamp voltage is volts B 11 lamp voltage oz Reports the ...

Page 215: ... B 22 malloc srec Reports sets memory allocation for short records B 22 manual Sets gas mode to sample B 32 me menu Simulates pressing menu pushbutton B 28 mode Reports operating mode in local service or remote B 39 no of lrec Reports sets number of long records stored in memory B 22 no of srec Reports sets number of short records stored in memory B 22 o3 Reports current 03 concentration B 9 o3 bk...

Page 216: ...35 save params Stores parameters in FLASH B 35 sc screen C series legacy command that reports a generic response Use iscreen instead B 29 sp conc Reports sets the span concentration for autocalibration B 27 sp field Reports sets item number and name in scratch pad list B 23 span Sets zero span valves to span mode B 31 sr Reports last short record stored B 18 srec Reports maximum number of short re...

Page 217: ...h temperature The first temperature reading is the temperature being used in instrument calculations The second temperature is the actual temperature being measured If temperature compensation is ON then both temperature readings are the same If temperature compensation is OFF a temperature of 0 C is used as the default temperature even though the actual bench temperature is 32 3 C The example tha...

Page 218: ...eports the current ozonator lamp temperature The example that follows reports that the current ozonator temperature is 68 7 C Send o3 lamp temp Receive o3 lamp temp 068 7 deg C lamp This reports the current photometer lamp setting The example that follows reports that the lamp setting is 72 9 Send lamp setting Receive lamp setting 72 9 set lamp ddd d This command sets the photometer lamp setting t...

Page 219: ...e actual pressure reading being measured If pressure compensation is on then both pressure readings are the same If pressure compensation is off a pressure of 760 mm Hg is used as the default pressure even though the actual pressure is 753 4 mm Hg The example that follows shows that actual reaction chamber pressure is 753 4 mm Hg Send pres Receive pres 760 0 mm Hg actual 753 4 flags This reports 8...

Page 220: ...e that follows reports that the alarm bench lamp temperature minimum value is 52 C Send alarm bench lamp temp min Receive alarm bench lamp temp 52 0 deg C set alarm bench lamp temp min value set alarm bench lamp temp max value These commands set the bench lamp temperature minimum and maximum value to value where value is a floating point number representing bench lamp temperature alarm limits in d...

Page 221: ...r representing bench temperature alarm limits in degrees C The example that follows sets the alarm bench temperature maximum value to 35 C Send set alarm bench temp max 35 Receive set alarm bench temp max 35 ok alarm conc o3 min alarm conc o3 max These commands report the conc O3 concentrations alarm minimum and maximum value current settings The example that follows reports that the O3 concentrat...

Page 222: ...is a representation of the intensity alarm limits The example that follows sets the cell a intensity alarm maximum value to 150000 Hz Send set alarm intensity a max 150000 Receive set alarm intensity a max 150000 ok alarm level 1 alarm level 2 alarm level 3 alarm level 4 alarm level 5 These commands report the offset value in ppb from the concentration stored at ozonator level 1 5 as the alarm tri...

Page 223: ...senting bench lamp temperature alarm limits in degrees C The example that follows sets the alarm ozonator lamp temperature maximum value to 58 C Send set alarm ozonator lamp temp max 58 0 Receive set alarm ozonator lamp temp max 58 0 ok alarm pressure min alarm pressure max These commands report the pressure alarm minimum and maximum value current settings The example that follows reports that the...

Page 224: ...g point number representing sample flow alarm limits in liters per minute The example that follows sets the sample flow alarm maximum value to 1 400 LPM Send set alarm sample flow max 1 4 Receive set alarm sample flow max 1 4 ok alarm trig conc o3 This command reports the O3 concentration alarm trigger action for minimum alarm current setting to either floor or ceiling The example that follows sho...

Page 225: ...e board The sequence of voltages is Positive 24 positive 15 negative 15 positive 5 positive 3 3 and positive 15 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 14 9 diag volt iob This command reports the diagnostic voltage measurements on the I O expansion board The sequence of voltages is Positive 24 positive 5 positive 3 3 and negative 3...

Page 226: ...able state 1 23 CONC ALARM open 3 3 UNITS open 4 12 GEN ALARM open list lrec list srec list stream list sp These commands report the list of current selections for long record logging data short record logging data streaming data output or the scratch pad sp list The example that follows shows the list for streaming data output Send list stream Receive list stream field index variable x x time 1 1...

Page 227: ... typical response The format is defined by the current settings of format and erec format commands For details on how to decode the flag fields within these records see Figure B 1 in the flags command Send erec Receive erec 13 05 08 12 05 flags 1C00554A o3 0 000 1 lo o3 0 000 1 lampi 0000 bencht 999 900 lampt 999 900 ozlampt 0 000 flowa 0 000 flowb 0 000 Pres 0 000 avgt 10 lo avgt 10 O3bkg 0 000 O...

Page 228: ...17 05 flags 2coooooo o3 2 664e 02 cellai 100115 cellbi 99756 bncht 3 168e 01 lmpt 5 255e 01 o3lt 6597e 01 flowa 7 318e 01 flowb 7 240e 01 pres 7 413e 02 22 00 8 17 05 flags c4ooooo o3 2 582e 02 cellai 100173 cellbi 99780 bncht 3 258e 01 lmpt 5 366e 01 o3lt 6672e 01 flowa 7 318e 01 flowb 7 301e 01 pres 7 515e 02 23 00 8 17 05 flags c4ooooo o3 2 567e 02 cellai 100205 cellbi 99653 bncht 3 291e 01 lmp...

Page 229: ...tails on how to interpret the strings see Record Layout Definition later in this appendix Send lrec layout Receive lrec layout s s lx f f f f f f f f f f f f t D L ffffffffffff flags no nox hino hinox pres pmtt intt rctt convt smplf ozonf pmtv lrec mem size srec mem size These commands report the long and short records that can be stored with the current settings and the number of blocks reserved ...

Page 230: ... 15 Receive set lrec per 15 ok no of lrec no of srec These commands report the number of long and short records stored in the long and short records memory The example that follows shows that 50 long records have been stored in the memory Send no of lrec Receive no of lrec 50 recs malloc lrec malloc srec These commands report the currently set memory allocation for long and short records in percen...

Page 231: ...ming data list into the scratch pad sp These commands are useful in easy modification of current long record short record or streaming data lists The example that follows copies the current list of long records into the scratch pad Send set copy lrec to sp Receive set copy lrec to sp ok sp field number This command reports the variable number and name stored at index in the scratch pad list The ex...

Page 232: ... This command sets the time interval between two consecutive streaming data strings to number value in seconds The example that follows sets the number value to 10 seconds Send set stream per 10 Receive set stream per 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 1 set str...

Page 233: ... settings The example that follows shows a successful auto calibration of the O3 background Send set cal 03 bkg Receive set cal 03 bkg ok o3 coef high o3 coef low o3 coef These commands report the O3 coefficient in single range mode or the high and low range coefficients in dual or auto range mode If the mode is incorrect the instrument responds with can t wrong settings The example that follows r...

Page 234: ...reports that the calibrator is set to output 500 ppb Send o3 setting Receive o3 setting 0500 o3 gas high o3 gas low o3 gas These commands report the low O3 span gas concentrations used to auto calibrate low O3 coefficients 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 that follows show...

Page 235: ...used to balance the output for both detectors so that they read the same value Send set cal detectors Receive set cal detectors ok sp conc high sp conc low sp conc These commands report span concentration in single range mode or the high and low span concentrations in dual or auto range mode If the mode is incorrect the instrument responds with can t wrong settings The example below reports the sp...

Page 236: ...t ru run up 1 2 3 4 These commands simulates pressing the front panel pushbuttons The numbers represent the front panel soft keys from left to right Send push enter Receive push enter ok isc iscreen This command retrieves the framebuffer data used for the display on the iSeries instrument It is 19200 bytes in size 2 bits per pixel 4 pixels per byte arranged as 320 by 240 characters The data is sen...

Page 237: ...sc 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 This is an I series Instrument Screen Information not available Measurement Configuration range high range low range Void unpackDisplay void far tdib unsigned char far rlescreen int i j k unsigned char far sc4bpp sc2bpp screen ptr ptr ...

Page 238: ...xample that follows reports that the O3 range is 50 ppb Send range o3 Receive range o3 0 5000E 2 ppb set range selection set high range selection set low range selection These commands select the O3 full scale range according to Table B 6 The example that follows sets the O3 full scale to 2 000 ppb Send set range o3 5 Receive set range o3 5 ok custom range range 1 2 3 Table B 6 Range Settings Code...

Page 239: ...three custom ranges 1 2 or 3 to range value where value is a floating point number representing concentration in ppm or mg m3 The example that follows sets the custom 1 range to 55 5 ppm Send set custom 1 range 55 5 Receive set custom 1 range 55 5 ok range mode This command reports the current range mode Send range mode Receive range mode single set range mode mode This command sets the current ra...

Page 240: ...m3 The example reports that the gas unit is set to ppb Send gas unit Receive gas unit ppb set gas unit unit ppb ppm μg m3 mg m3 This command sets the gas units to ppb ppm μg m3 or mg m3 The example that follows sets the gas units to mg m3 Send set gas unit mg m3 Receive set gas unit mg m3 ok pres comp This command reports whether pressure compensation is on or off The example that follows shows th...

Page 241: ...omp off Receive set temp comp off ok l1 conc l2 conc l3 conc l4 conc These commands report the concentration setting of each of the four custom levels The example that follows reports that custom level 1 is 125 ppb Send l1 conc Receive l1 conc 0125 ppb set l1 conc value set l2 conc value set l3 conc value set l4 conc value set l5 conc value These commands set the concentration for each of the five...

Page 242: ... sets the screen s level of contrast according to Table B 7 The example that follows sets the contrast level to 50 Send set contrast 5 Receive set contrast 5 ok date This command reports the current date The example that follows reports the date as December 1 2004 Send date Receive date 12 01 04 set date mm dd yy mm month dd day yy year This command sets the date of the analyzer s internal clock T...

Page 243: ...ed that this command be sent If changes are not saved they will be lost in the event of a power failure The example that follows saves the parameters to FLASH memory Send set save params Receive set save params ok ozonator This command reports the ozonator on or off The example below reports that the ozonator is on Send ozonator Receive ozonator on set ozonator onoff These commands set the ozonato...

Page 244: ...main name server address where address consists of four numbers ranging from 0 255 inclusive separated by Send set addr dns 192 168 1 1 Receive set addr dns 192 168 1 1 ok addr gw This command reports the default TCP IP gateway address Send addr gw Receive addr gw 192 168 1 1 set addr gw address This command sets the default gateway address where address consists of four numbers ranging from 0 255...

Page 245: ...nd reports the current baud rate for the serial port RS232 RS485 The example that follows reports that the current baud rate is 9600 Send baud Receive baud 9600 set baud rate rate 1200 2400 4800 9600 19200 38400 57600 115200 This command sets the instrument baud rate The example that follows sets the instrument s baud rate to 115200 Note After the command is sent the baud rate of the sending devic...

Page 246: ...follows shows that the reply format is 00 which means reply with no checksum according to Table B 8 Send format Receive format 00 set format format This command sets the reply termination format where format is set according to Table B 8 The example that follows sets the reply termination format to checksum Send set format 01 Receive set format 01 ok where xxxx 4 hexadecimal digits that represent ...

Page 247: ...ve Note Sending this command via RS 232 or RS 485 will require the host to use the new id for subsequent commands Send set instrument id 50 Receive set instrument id 50 ok mode This command reports what operating mode the instrument is in local service or remote The example that follows shows that the instrument is in the remote mode Send mode Receive mode remote set mode local set mode remote The...

Page 248: ...eive analog iout range 4 2 set analog iout range channel range This command sets analog current output channel to the channel range where channel is between 1 and 6 inclusive and range is set according to Table B 9 The example that follows sets current output channel 4 to the 0 20 mA range This command responds with feature not enabled if the I O expansion board is not detected Send set analog iou...

Page 249: ...f the digital inputs as a 4 digit hexadecimal string with the most significant bit MSB being input 16 Send dig in Receive dig in 0xff7f din channel This command reports the action assigned to input channel and the corresponding active state The example that follows reports the input 5 to be assigned an index number 9 corresponding to action of analog outputs to zero with the active state being hig...

Page 250: ...d assigns digital output channel to be assigned to the action associated with index and assigns it an active state of state open or closed Send set dout 4 11 open Receive set dout 4 11 open ok dtoa channel This reports the outputs of the 6 or 12 digital to analog converters according to Table B 11 The example that follows shows that the DAC 1 is 97 7 full scale Send dtoa 1 Receive dtoa 1 97 7 Note...

Page 251: ...p field index The example that follows reports the list of analog output index numbers and variables Send list var aout Receive list var aout index variable 0 none 1 o3 2 no2 5 cellai 6 cellbi 7 noisa 8 noisb 9 flowa 10 flowb 11 pres 12 bncht 13 lmpt relay relay stat This command reports the current relay logic normally open or normally closed if all the relays are set to same state that is all op...

Page 252: ...mmand is sent without an appended relay number then all the relays are assigned the set logic of normally open closed Send set relay open 1 Receive set relay open 1 ok Record Layout Definition The Erec Lrec and Srec Layouts contain the following A format specifier for parsing ASCII responses A format specifier for parsing binary responses In addition to these the Erec Layout contains A format spec...

Page 253: ...ier 3 bytes i ignore one 8 bit character 1 byte e parse a 24 bit floating point number 3 bytes n x E parse a 24 bit floating point number 3 bytes N x f parse a 32 bit floating point number 4 bytes c parse an 8 bit signed number 1 byte C parse an 8 bit unsigned number 1 byte n parse a 16 bit signed number 2 bytes N parse a 16 bit unsigned number 2 bytes m parse a 24 bit signed number 3 bytes M pars...

Page 254: ... string s hexadecimal x decimal d or floating point f or binary b number Typically bitfield extractions are only done for decimal or hexadecimal numbers Floating point numbers can be followed with an optional precision specifier which will be used as an argument to printf s f format e g a field of 4 would be translated into the printf command of 3f Alternately the special character can precede the...

Page 255: ...t The input format is specified from the B through the subsequent semicolon I Indicates a button which pops up a selection list with input translation That is the values read are translated before they are compared to the selection list options L Indicates a button which pops up a selection list without any translation The output value is number of the selected option T Indicates a button which po...

Page 256: ...range no d n This is a line which appears slightly indented the title is again O3 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 selection list of twelve Code nn options The number of the user selection is used to create the output command Mode 6 12 13x local remote service service 0 1 Tset mode s ...

Page 257: ...nd part of a bitfield specification is optional The bitfield will be one bit long starting in this case at the eleventh bit Background 7f 8Bd ddd set o3 bkg s n This shows the use of indirect precision specifiers for floating point displays 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...

Page 258: ...C Link Protocol Commands Record Layout Definition B 50 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific ...

Page 259: ... This is achieved by using the supported MODBUS commands listed below For details of the Model 49i Primary Standard MODBUS Protocol specification see the following topics Serial Communication Parameters on page C 2 describes the parameters used to support MODBUS RTU protocol TCP Communication Parameters on page C 2 describes the parameters used for TCP connection Application Data Unit Definition o...

Page 260: ... MODBUS slave address is a single byte in length This is the same as the instrument ID used for C Link commands and can be between 1 and 127 decimal i e 0x01 hex to 0x7F hex This address is only used for MODBUS RTU over serial connections Note Device ID 0 used for broadcast MODBUS commands is not supported Device IDs 128 through 247 i e 0x80 hex to 0xF7 hex are not supported because of limitations...

Page 261: ...d varies depending on the function For more description of these data fields see Function Codes below Error Check In MODBUS over Serial an error check is included in the message This is not necessary in MODBUS over TCP IP because the higher level protocols ensure error free transmission The error check is a two byte 16 bit CRC value Function Codes This section describes the various function codes ...

Page 262: ...ay not reflect the state of the actual relays in the instrument as the user may program these outputs for either active closed or open N Quantity of Outputs 8 if the remainder not equal to zero then N N 1 Here is an example of a request and response to read outputs 2 15 Request Function code 1 Byte 0x01 or 0x02 Starting Address 2 Bytes 0x0000 to maximum allowed by instrument Quantity of outputs 2 ...

Page 263: ...codes will generate the same response These functions read the contents of one or more contiguous registers These registers are 16 bits each and are organized as shown below All of the values are reported as 32 bit IEEE standard 754 floating point format This uses 2 sequential registers least significant 16 bits first The request specifies the starting register address and the number of registers ...

Page 264: ...Byte 2 x N Register value N x 2 Bytes n N or N 1 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 Request Field Name Hex Function 0x03 Starting Address Hi 0x00 Starting Address Lo 0x09 No of Registers Hi 0x00 No of Registers Lo 0x04 Response Field Name Hex Function 0x03 Byte Count 0x06 Regist...

Page 265: ...e action to be ON A value of 0x0000 requests it to be OFF All other values are illegal and will not affect the output The normal response is an echo of the request returned after the state has been written Here is an example of a request to write Coil 5 ON Request Function code 1 Byte 0x05 Output Address 2 Bytes 0x0000 to maximum allowed by instrument Output Value 2 Bytes 0x0000 or 0xFF00 Response...

Page 266: ...tput Address Hi 00 Output Address Lo 05 Output Value Hi FF Output Value Lo 00 Table C 1 Read Coils for 49i Primary Standard Coil Number Status 1 NOT USED 2 SERVICE 3 GAS UNITS 4 ZERO MODE 5 SPAN MODE 6 SAMPLE MODE 7 O3 LEVEL 1 8 O3 LEVEL 2 9 O3 LEVEL 3 10 O3 LEVEL 4 11 O3 LEVEL 5 12 PURGE MODE 13 GEN ALARM 14 CONC MAX ALARM 15 CONC MIN ALARM 16 BENCH TEMP ALARM 17 BENCH LAMP TEMP ALARM 18 O3 LAMP ...

Page 267: ...sters for 49i Primary Standard Register Number Variable 40001 40002 O3 CONC 40003 40004 LO O3 CONC Dual Auto Range mode 40005 40006 HI O3 CONC Dual Auto Range mode 40007 40008 RANGE STATUS 40009 40010 INTENSITY A 40011 40012 INTENSITY B 40013 40014 NOISE A 40015 40016 NOISE B 40017 40018 FLOW A 40019 40020 FLOW B 40021 40022 PRESSURE 40023 40024 BENCH TEMP 40025 40026 LAMP TEMP 40027 40028 O3 LAMP...

Page 268: ...3 OUT CONC Table C 3 Write Coils for 49i Primary Standard Coil Number Action 101 ZERO MODE 102 SPAN MODE 103 OZONATOR LEVEL 1 104 OZONATOR LEVEL 2 105 OZONATOR LEVEL 3 106 OZONATOR LEVEL 4 107 OZONATOR LEVEL 5 108 SET BACKGROUND 109 CAL TO LOW SPAN Dual Auto Range mode 110 CAL TO HIGH SPAN Dual Auto Range mode 111 OZONATOR SOLENOID 112 AOUTS TO ZERO 113 AOUTS TO FS Table C 2 Read Registers for 49i...

Page 269: ...instrument to be in sample zero span mode if valid for that instrument This is achieved by using the supported Geysitech commands listed below For details of the Model 49i Primary Standard Geysitech Protocol specification see the following topics Serial Communication Parameters on page D 1 TCP Communication Parameters on page D 2 Instrument Address on page D 2 Abbreviations Used on page D 2 Basic ...

Page 270: ...ment Address is the same as the Instrument ID used for C Link and MODBUS commands This can be set via the front panel The Instrument Address is represented by address in the examples throughout this document Note Device IDs 128 through 247 are not supported because of limitations imposed by the C Link protocol Abbreviations Used The following is a list of abbreviations used in this document CR is ...

Page 271: ...is represented by two characters which represent a 2 digit hex number 1byte e g 1 byte 0xAB hex checksum will be represented by the two characters A B The checksum is referred to as BCC throughout this document Geysitech Commands The following commands are supported by the Geysitech protocol Instrument Control Command ST Data Sampling Data Query Command DA Instrument Control Command ST There are t...

Page 272: ... optional which means it can be left out completely The address if present must match the Instrument Address Additional space can be present after the address If the received command does not satisfy the above formats or if the address does not match the Instrument Address the command is ignored This is a sample command to switch the instrument to zero mode instrument id 5 STX ST005 SP N CR Data S...

Page 273: ...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 Sample Data Reply String in response to Data Query Command DA In response to a valid data query command DA the instrument responds in the following format STX MD02 SP address SP measured value1 SP status SP SFKT SP add...

Page 274: ...is represented as 5384 06 0 04567is represented as 4567 02 status is formed by operating status and error status and separated by a space i e operating status SP error status Each of the two operating status and error status are formed by two characters each representing a 2 digit hex number which is one byte 8 Bits operation status and one byte 8 Bits error status These two bytes contain the info...

Page 275: ...ttached to the response if not valid in a particular mode then a value of 0 0 will be reported Measurements Reported in Response to DA Command for 49i and 49i PS The following measurements reported in response to DA command are for the Model 49i and 49i Primary Standard Single Range Mode for 49i and 49i PS The 1 measurement reported in single range mode for the Model 49i and 49i Primary Standard i...

Page 276: ... 08 04 02 01 MSB LSB Operating status Service Mode On 0 0 0 0 0 0 0 1 Maintenance Local 0 0 0 0 0 0 1 0 Zero gas On 0 0 0 0 0 1 0 0 Span gas On 0 0 0 0 1 0 0 0 Not used 0 0 0 1 0 0 0 0 Gas Unit Indication ppb OR ppm 0 0 1 0 0 0 0 0 Not used 0 1 0 0 0 0 0 0 Not used 1 0 0 0 0 0 0 0 D7 D6 D5 D4 D3 D2 D1 D0 Æ Bit 8 7 6 5 4 3 2 1 Æ Hex value 80 40 20 10 08 04 02 01 MSB LSB Error status O3 Lamp Tempera...

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Thermo 49i, Instruction Manual, Page: 172 / 276

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