EP-IR Encoded Photometric Infrared Spectrometer Manual

?EP–IR Spectrograph Installation Guide&User’s Manual Issue 1.0October, 2005Part Number: 002-0000 Aspectrics, Inc6900 Koll Center Pky, Suite 401Pleasanton, CA 94566925.931.9270www.Aspectrics.com??Limited WarrantyLoreetue molor inibh er ad tisi te mincin eugue etuer sim ing erosto eniscin velendre faciliquis non velestrud tetue minis dignim niat vel doloborem dolesequam aliquis ilisi eugue volenim aliquatisit am, cor sum nos nonulputpat num zzriure te facillam, qui tatue magnis nos nulluptat ea feuguerosto del ut laore commod magna facil ut vulla faccums ndigna alit auguero doluptat.Duisi bla feugait irit laore conse consequat verostruD tatumsanDre enim vel ut la feugait aDiat. ut iriure magna faci eu facin henDit essi tat amet at alit lore tatum inissequam, commoD Diatue conse ting et, con volortissent wismoDi niamet vent prat wis acilis Delit in henis aliquat. 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Ut nosto odo dignit, quis aliquis aciduissed eugiam, quis niat vullam, quam, venim zzriure tatuero dio conseni sequis dolore feugue conulpu patet eriliquis alit ut er summolenim dolum dolutem velesequam nulput vent am veliquip ex esed exer ing et, consed tatie er ad tat iustisim vero consed exerat, quamcommodo odiamconsed ent utem ipis nulput vero odo doluptat lore tio odolum in henit irilla faccum veliquatuer ilit autat. Ut dit ent accum adio con utpatet nulpute volortio enisi eum nismolobor si euipis dolore dit utatie tat vulla accum quisci tat wis dunt lan vulput nis ea faccum vul-laorper adiam, con velenibh ea feugait ut vullam doloborerit la con ea faci blaore dolor senis ate feu feuipisim ipit, conse del ullutat. Ut vullaor si ero con ut aliquip ea ad tio commolo periurem zzriurem quam iliquismol-or irit ulla feu feugait augait,Customer supportTelephone: 888.9ASPECT (888.927.7348)E-mail: support@Aspectrics.comiiiContentsSection 1: InstallationIntroduction ........................................................................................................................ 1–1Unpacking the EP-IR ......................................................................................................... 1 –1Installation ........................................................................................................................ 1 –3Cabling the EP-IR .........................................................................................................1 –4PC Requirements ...................................................................................................1 –4Cabling Procedure ..................................................................................................1 –5Configuring the PC ........................................................................................................1 –6Local Area Network (LAN) Setup............................................................................1 –6Specifications .................................................................................................................. 1 –12Instrument Dimensional Drawings ..............................................................................1 –13Section 2: OperationControl Application Installation ........................................................................................... 2–1Initial Calibration of the EP-IR ............................................................................................ 2–3Tools & Materials ............................................................................................................2–3Calibration Procedure ....................................................................................................2–4Select the Instrument for Calibration .......................................................................2–4Launch Calibration Software ...................................................................................2–4Setup Raw Data ......................................................................................................2–6Signal Verification – Gain ........................................................................................2–6Calibrate Dark Field Spectrum .............................................................................. 2–11Save Calibration ....................................................................................................2–15Data Collection ................................................................................................................ 2–16Data Collection ............................................................................................................2–18ivExport to ASCII ......................................................................................................2–20Updating Aspectrics Software ........................................................................................... 2–22Upgrade from a Local Server .......................................................................................2–24Section 3: Sampling BenchUsing the Samping Bench Option ...................................................................................... 3–1Sample Bench Assembly ...............................................................................................3–2Gas Connection .......................................................................................................3–2Instrument Alignment .....................................................................................................3–21–1 Installationsection 1: Installation Introduction The Aspectrics Encoded Photometric Infrared Spectrograph (EP-IR) 100/200 Series is a compact, highly accurate, and flexible spectroscop-ic analyzer used in a variety of applications including the monitoring of ambient air and stack gases, engine emissions, foods, and semicon-ductor processes.The Aspectrics’ EP-IR design is simple yet rugged and efficient pro-ducing a compact yet extremely powerful unit. At the heart of the analyzer is a rotating disc onto which up to 256 concentric encoding tracks is formed. The encoding tracks enable extremely accurate inten-sity measurements and are sensitive enough to replace conventional detector arrays such as NDIR and FTIR currently used in many instru-ments. The EP-IR is designed to encode the analytical information in the same way that an interferometer does but without environmen-tally sensitive components. It records and stores data in binary form to provide high resolution data using minimal memory. The captured high-resolution data can be repeatedly reviewed using a wide variety of methodologies. The EP-IR allows Sample Tag insertion in the data record to safely store pertinent information of the sampling method within the data record.This manual provides unpacking, installation, and initial operation in-structions. Detailed operation instructions are application specific and are available from Aspectrics (for contact information, see Customer Support on Page ii of this document).Figure 1-1. Aspectrics EP-IR1 –1 InstallationUnpacking the EP-IRThe following description relates the procedure for unpacking the EP-IR instrument and the Sample Bench option—the common laboratory installation.Note: AlwAys CheCk the shoCkwAtCh lAbel oN the shippiNg box for A red shoCk iNdiCAtioN (see figure 1-2). ACCept the shipmeNt but Note oN the bill of lAdiNg the iNdiCAtor ACtivAtioN ANd iNspeCt the shipmeNt CArefully for dAmAge. theN CoNtACt AspeCtriCs Customer support Figure 1-2. Shockwatch Label.Check the Packing List to verify all components are present.Table 1-1. Typical EP-IR Equipment List (part numbers subject to change)Item Part Number Description QtyEP-IR Instrument1 MIR-100-256 Aspectrics Inc. Spectrometer 12 002-0000 Aspectrics Users Manual 13 030-0000 Aspectrics Software CD 14 204-0004 Cable, Ethernet Category 5E 15 204-0005 Cable, Enhanced Category 5 568B Crossover 16 706-0000 Power Supply Brick for Instrument 1Sample Bench1 704-0000-00 Development Bench, Single Beam 12 466-0002 Power Supply Brick for Sample Bench 13 601-0000 Hardware Kit Assembly 11 –2InstallationFigure 3 depicts the equipment included in both the EP-IR Instrument shipment and the Sample Bench shipment.Figure 1-3. EP-IR and Sample Bench ComponentsEP-IR InstrumentEP-IR InstrumentMountSample BenchEthernet CrossoverCable (Red)Enhanced Category 5 566BEthernet CableCategory 5EPN 030-0000Aspectrics SoftwareCDSoftware CD Power Supply Brickfor EP-IRPower Supply Brickfor Light SourceFour mounting bolts3/16 Hex Head(Hex wrench provided)1 –3 InstallationInstallation Physical installation of the EP-IR is application specific and will not be covered here. For typical lab setup using the Sample Bench option, see Section 3, Sample Bench Installation. For Custom installations, Instrument alignment diagrams are provided at the end of this section.The basic EP-IR system consists of the following items: • The EP-IR 100/200 Series Spectrograph • Brick power supply • 10 ft. (3 meter) Category 5E Ethernet cable • 10 ft. (3 meter) Red Ethernet crossover cable • A user-supplied personal computer (minimum 1GHz) running Windows XP operating systemFigure 1-4. Typical EP-IR System with Sample Bench.Aspectrics EP-IR22-28 VPower SupplySample compartmentAspectrics EP-IR & Sample Bench3.5 inch beam heightDedicated User-supplied PC1 –4InstallationCabling the EP-IRThe following instructions describe cabling of the EP-IR for power-up and initial configuration. Included are PC requirements for operat-ing the EP-IR on a Local Area Network (LAN). The cabling procedure includes: • Connecting the PC via a cross-over Ethernet cable • Connecting the brick power supplyPC RequirementsInstallation of the EP-IR requires a LAN dedicated PC running the Windows XP operating system.The EP-IR also uses a spectral data collection software that requires JavaScript version 1.3 or greater is loaded on the PC. To check your version of Java Runtime Environment: 1. Open an MS-DOS C:\\\\ prompt window. 2. At the C:>\\\\ prompt, enter the text string . 3. Press the key. 4. A message reporting the Java version will be displayedNote: if the versioN of JAvA ruNtime eNviroNmeNt oN the pC is 1.3 or older, pleAse proCure ANd iNstAll AN updAted versioN from http://java.sun.com before CoNtiNuiNg.1 –5 InstallationCabling ProcedurePerform the following steps to cable the EP-IR: 1. Ensure that the PC is turned OFF. 2. Using the red cross-over Ethernet cable, connect the PC Ether-net to the EP-IR Ethernet port.Figure 1-5. EP-IR to PC Cabling 3. Connect the DC side of the power supply brick to the 22-28V Power connector on the EP-IR and then plug in the AC side. 5. Turn on the PC and proceed to Configuring the PC.Figure 1-6. Input/Output and Power ConnectionsAnalog IOPower22-28V FaultEthernetRS 232On Off2 1Ethernetcross-overcable22-28 VPower SupplyAC plug1 –6InstallationConfiguring the PCThe Aspectrics GUI enables communication with, and control of, the EP-IR. It is configurable spectral data collection software. The output spectral data can be saved for later chemometrics analysis using a specialized software package such as RTSS from Sanchez Industrial Design.Local Area Network (LAN) SetupThe dedicated host PC should be connected directly to the EP-IR via the red cross-over Ethernet cable. It should not be connected to a net-work. To set up the host PC, perform the following steps: 1. On the PC Local Area Connection menu select Internet Pro-tocol (TCP/IP) and click OK to bring up the Internet Protocol (TCP/IP) menu. Select “Obtain an IP address automatically.”1 –7 Installation 2. Bring up a command window and “Ping” the instrument at address 169.254.0.1. 3. If the Ping is successfully replied to, go to Step 4. If there are no replies, reset the network setting using these two com-mands: • “ipconfig/release” followed by, • “ipconfig/renew”1 –8InstallationNote that the second command “ipconfig/renew” might take up to one minute and will result in an error message. This is expected be-cause there is no DHCP server. The failure, however, will default to an IP address in the range of 169.254.X.X. Use the command “ipconfig” to verify this result. 1 –9 Installation 4. Connect to the EP-IR using the host PC Web Browser. Open Internet Explorer and browse to the URL http://169.254.0.1. The following login prompt will appear. Enter: User name: admin Password: admin Click OK.A Security Warning prompt will ask for your permission to execute Aspectrics applets on your PC. Click YES to continue.1 –10Installation 5. Change the boot parameters. The initial screen you will see is similar to this screen shot:Click on the “Admin” top-bar tab to view the Boot Parameters. • Change the IP Address – this should be a unique IP address as-signed to the instrument by your network administrator.1 –11 Installation • Change the Host Address – this should be the host IP address of a PC from which the instrument will obtain its firmwar up-grades. This field is optional. • Change the Gateway (G/W address) to that assigned by your network administrator. This should be your corporate gateway. The Gateway IP address facilitates firmware upgrades directly from Aspectrics website. • Click on Set Parameters then Reboot to restart your EP-IR. 6. Connect the Aspectrics EP-IR to your corporate network. After successful configuration, your EP-IR is ready to be con-nected to the corporate backbone for access from any host within your subnet. A typical setup is shown below.Figure 1-7. Typical Corporate Network Configuration1 –12InstallationSpecificationsTable 1-2. EP-IR SpecificationsParameter ValueSpectral Range MIR-I 4000 – 2000 cm-1 (2.5 – 5.0 Microns)Grating Specifications Holographic grating with 2x spectral rangeAperture Slit Dimensions 0.125 mm x 0.18 mmEP-IR point Resolution 256 equidistant wavelength points across 2.5 – 5.0 Microns regionWavenumber Precision Better than ±0.1 cm-1 precision at 2000 cm-1Detector Single stage T.E. cooled PbSeAmplifier Gain Settings 2, 4, 8, 16, 32 software selectableADC Precision 16-bitScanning Speed Software selectable up to 100 HzSignal to Noise Peak-to-Peak (Third party determination on pre-production unit)60 seconds <6x10-5 absorbance units (2500 – 2600 cm-1)Operational Temperature Range 0.0 to 40° CPower Supply Input: 100-240V, 50-60Hz, 1.8A Output: 24V, 2.5ATable 1-3. Sample Bench SpecificationsParameter ValueBench Standard Mattson Galaxy Accessory fitting 3.5 inch beam height Power SupplySpecifications subject to change without notice.1 –13 InstallationInstrument Dimensional DrawingsThe following Figures provide alignment information for custom installation of the EP-IR. Dimensions are in inches.Figure 1-8. Light Cone Angle and Aperature Slit DimensionFigure 1-9. Instrument Front View Dimensions1 –14InstallationFigure 1-10. Mounting Hole Dimensions2–1 Operationsection 2: Operation Control Application InstallationThe Aspectrics EP-IR 100/200 Series provides a OCX Data Collection Control system that is auto-installed from the disk included in your shipment. When you open the disk on your PC, you will see:Click Next to select a location on you hard drive to install the software (default is shown).2–2OperationTo begin the installation, click Install.The auto-installation may take several minutes.2–3 OperationWhen installation is completed, click Finish.Initial Calibration of the EP-IRThis procedure provides the steps for initial calibration of an EP-IR MIR-1 instrument. It is always good practice to verify with Aspectrics the latest version of the calibration procedure. Contact Aspectrics and provide the part number and version of this manual before perform-ing initial calibration.Tools & MaterialsThe following tools and materials are required or suggested for this procedure: • An IR Light Source • A Nitrogen Purge • An Ethernet (RJ45) Cable • A Computer with a network card • The latest version of the Aspectrics OCX Software2–4OperationCalibration ProcedureThe following calibration must be performed for the initial setup and every time the source-cell-system setup is changed. This procedure assumes you have completed system setup (Section 1) and have: • Connected the system to the power supply • Set IR Light Source • Connected the Nitrogen purge line to the EP-IR Unit • Connected Ethernet to a host computer with Control/Applica-tion software installed. • Purged the unit of any unwanted gasses using N2Select the Instrument for Calibration 1. Open “Config Aspectrics.” 2. Enter the correct System IP number for the instrument to be calibrated. 3. Click on the “Save” button. Launch Calibration SoftwareTo launch the calibration software perform the following steps: 1. Open “Launch TestAspectrics.” 2–5 Operation The main window “Aspectrics OCX Test Harness” will come up.Config Dialog button 5. Click on “Config Dialog” button This will bring up the “In-strument Configuration” window. 2–6OperationSetup Raw Data 1. In the “Instrument Configuration” window, select the “Instru-ment” Tab. 2. Set the Preamp Gain to 2.Instrument tabPreamp GainEnables 3. Deselect these three items: “Enable Intensity Correction,” “Enable Dark Spectrum,” and “Enable Auto Phase Cal.” Select “Enable Fir Filter.” importANt: oNly for this proCedure do you disAble these items. they should be eNAbled for NormAl operAtioN.Signal Verification – Gain 1. In the Instrument Configuration window, click on the “Moni-tor Data” Button. This will display a live interferogram as shown below. Monitor DataIntensity Scale2–7 Operation 2. Check on the displayed interferogram that the gain for the detector is adjusted so the signal intensity is below two mil-lion units. If the displayed intensity is a large amount below two million, adjust the gain setting to correct it. (Correct Gain is dependent upon the source used.) Distribution and Purge 3. In the “Instrument Configuration” window, select the “In-strument” tab and change the Data Type to Intensity (wait 20 seconds for the display to refresh). The maximum instensity peaks should be located at about 3.8 µm.3.8 microns2–8Operation 4. Verify that all unwanted gasses have been purged by looking at the intensity spectrum. The previous spectrum shows CO2 emission. If not fully purged, wait for the purge to take effect. Note: iN speCiAl CAses, it is possible to proCeed usiNg AmbieNt Air As A purge gAs. the iNteNsity speCtrum of AmbieNt Air is showN below.Ambient AirIntensity Spectrum2–9 OperationSpectrum Verification 5. In the “Instrument Configuration” window, select the “Instru-ment” tab. 6. Select “Enable Auto Phase Calibration.” 7. Click on the “Init Data Collection” button.Data TypeAuto Phase CalibrationInit Data Collection 8. In the “Instrument Configuration” window, select “Decoded” from the Data Type pull-down menu and verify the Graph is as follows (two peaks, nitrogen-purged).2–10OperationThe graph shown below illustrates the Decoded spectrum in ambient-air.Ambient Air2–11 OperationCalibrate Dark Field Spectrum 1. In the “Instrument Configuration” window, select the “Instru-ment” tab and deselect “Enable Auto Phase Calibration.” 2. Select the Data Type “Intensity.” 3. Set the Boxcar Average to “2048.” 4. Remove the IR source from the unit. 5. Verify that graph shows the source is off and the signal is stabilized. Data Type: IntensityDeselect “Enable Auto Phase Calibration”Graph with Source Off for Dark Field calibration 2–12Operation 6. In the “Instrument Configuration” window, select the “Cali-bration” tab. 7. Select “Set Dark Field Spectrum” and verify the graph is as shown.Set Dark Field SpectrumGraph with Dark Field Spectrum set successfullyCalibration tab 8. Turn on or replace the IR source to the unit and wait for the signal to maximize.2–13 Operation Intensity Correction/Reference Spectrum 9. In the “Instrument Configuration” window, select the “Instru-ment” tab. 10. Select “Enable Auto Phase Calibration.”Enable Auto PhaseCalibrationCalibration tab 11. In the “Instrument Configuration” window, select the “Cali-bration” tab and click on “Set Intensity Correction Set Intensity Correction2–14OperationIt will take approximately 20 seconds for the graph to update to pro-duce a spectrum like that shown below.Graph after Intensity Calibration2–15 OperationSetting the Reference Spectrum 12. Use the “Instrument” tab to verify that “Enable Intensity Cor-rection is selected and the graph is compares to that shown above. 13. Click on the “Set Reference Spectrum” button.Enable IntensityCorrectionData Type: IntensitySet Reference SpectrumSave Calibration 1. In the “Instrument Configuration” window, select the Calibra-tion tab. 2. Click on “Save User Calibration” and the calibration proce-dure is completed. Calibration tabSave User Calibration2–16OperationData Collection To begin data collection using the Aspectrics OCX software, launch the “MyAPInstrument” application and click on the “Config Dialog” button to bring up the “Instrument Configuration” window. Reset and ready the unit by selecting the Instrument tab and clicking on “Init Data Collection.” The “Init Data Collection” function is used when-ever an alignment or parameter change has been made and a restart is required (takes approximately 20 seconds as boxcar buffer loads).ConfigurationDialogInitial Data Collection2–17 OperationClick on the “Monitor Data” button to view a waveform.Click on the “Config Dialog” button to view the “Instrument Configu-ration” window and select the Instrument tab.Using the “Instrument Configuration” window, you can select the Data Type—the type of spectral data to return. Select from: • Interferogram • Decoded • Intensity (Emittence) • Absorbance • Reference (required before configuring the instrument to return absorbance information)2–18OperationSelect a Down Sample Interval – the number of data packages to be returned every second (100 = 1 frame/sec., 1 = 100 frames/sec.). Ad-just the sample rate for the speed of your computer to assure complete and accurate data transfer. (Default for an interferogram is 10 and for spectral data is 4.)Set the Boxcar Average – signal averaging process for spectral data. Input a value between 1 and 2048.Adjust Preamp Gain to scale the display for proper signal intensity level. (Maximum of ±2 million for an interferogram, adjust to between 1 and 1.7 million.) Data Collection The Collection Tab provides the functions for collecting data and ex-porting it in different formats. SPC (a standard spectroscopy format) and ABin formats are shown here. Other formats can be supported upon request including MATLAB & HTML/XML.The preferred data Type for data collection is ABin (Aspectrics Bina-ry). This native format is the most complete and compact data format available. It records every item of data that comes out of the instru-ment in the most compact format. From the ABin file, you can select desired types of data for immediate export and return later to extract any other captured data. The ABin file can be exported to ASCII text 2–19 Operationfor use in spreadsheet or other analysis applications.When collecting data and exporting to a file, you will: 1. Click on Collect Sample – enter the directory path and file name.If you perform more sample collections without renaming the file, the name will be stored in the same directory and automatically append-ed with a number (002, 003, etc.).Note: if you Are dowN sAmpliNg At A high rAte (1 = 100 frAme /seC.) you mAy wANt to deseleCt “updAte grAph duriNg ColleCtioN.” A slow Computer Could drop some frAmes if preoCCupied with the lAbor iNteNsive grAphiCs updAte. 2. Click on Collect to File Now to display a progress bar. At the top of the graph, a counter indicates the frame being scanned. When complete, the Collect Event window is displayed. A binary file will depict the resulting data in one continuous stream. When the data is exported to ASCII, the data will display in one row per frame with data channels in columns.2–20OperationExport to ASCIITo select specific content and format for viewing in spreadsheet or other applications, you will export the ABin file to an ASCII file. 1. Click on Export to ASCII and select the data file for export. 2. Click on Export to assemble the ASCII file. The ASCII Export Settings window appears. Click in the Export How list for the items you want included. Select from Don’t Export, Export, or Zero Fill. Check or un-check the Export Header box to include or exclude header information in the file. Click on OK. 2–21 OperationThe ASCII Export Setting you make will be saved for your future ex-ports. You can now access the directory and open the exported ASCII file using Excel or other third-party applications.Note: file size of the AsCii text CoNversioN, with All dAtA iNCluded, would be ApproximAtely four times As lArge As the origiNAl AbiN file.2–22OperationUpdating Aspectrics SoftwareAspectrics provides an FTP site for downloading the latest software for the EP-IR spectrograph.Open a browser and enter address of the EP-IR instrument in the URL field (set during installation).A Connect window will appear. Enter the following: • User name: admin • Password: adminClick OK to launch the Java applet to perform the download. The fol-lowing screen will be displayed. Click on the Admin tab. Admin tab2–23 OperationUsing the “Admin” window, set the Host Address field to the Aspec-trics FTP site by entering: 67.97.185.29 and click on the desired down-load: • Upgrade Application – for the latest version of the Aspectrics OCX software. • Upgrade Applet – for the latest version of the Java applet in the EP-IR instrument. • Upgrade Web Server – for the latest embedded HTTP server ap-plication that allows your browser to connect to the instrument. It is also a gateway through which the Java applet can inter-act with the instrument. As such, it may need to be upgraded together with the applet depending upon the compatibility the two versions. • Download Configuration Files – to load saved a saved configura-tion file from your client computer to the instrument. • Download Calibration – to load a saved calibration file from your client computer to the instrument.The upgrade software will be downloaded to the instrument. When complete, click Reboot.2–24OperationUpgrade from a Local ServerTo Upgrade from a local server, enter the IP address of your server in the Host Address field and proceed as previously described. 3–1 Sampling Benchsection 3: Sampling Bench Using the Samping Bench OptionThe Aspectrics EP-IR 100/200 Series is most often used in a laboratory environment mounted on the Sample Bench shown in Figure 3-1. The Sample Bench option consists of the following: • Development Bench with beam splitter and light source. • Power Supply Brick for light source • Hardware assembly kit with Hex wrenchFigure 3-1. Mounting the EP-IR on a Sample BenchAspectrics EP-IRSecured withfour mounting bolts(3/16 Hex head)Aspectrics EP-IR & Sample BenchMattson Galaxy specification3.5" beam heightBeam splitter &focusing UnitUniversal mount insample compartmentLight sourceSample Bench AssemblyFigure 3-2 shows a top view of the Sample Bench indicating mounting holes for the EP-IR Instrument and the Sample Compartment area.Figure 3-2. Sample Bench LayoutEP-IR InstrumentMountSample compartmentX in.X in.Purge gas connectionGas ConnectionConnect purge gas supply to the connector shown in Figure 3-2.Instrument AlignmentThe mounting holes of the instrument are slotted in a horizontal direc-tion. This allows horizontal alignment for maximum energy through the entrance aperture. No adjustment is necessary in the vertical direction.