Praying Mantis Reflection
Contents
1. a mg HARRICK x 4 www harricksci com THE PRAYING MANTIS USER S MANUAL HARRICK SCIENTIFIC PRODUCTS INC 141 Tompkins Ave 27 floor e Pleasantville NY 10570 800 248 3847 914 747 7209 TABLE OF CONTENTS General Information Unpacking Technical Support Feedback About the Praying Mantle sss 2 Installation and Alignment Open Beam Spectrum Getting Ready Purge Installation Installing the Praying Mantis Aligning the Praying Mantis Verifying the Throughput Specular Reflectance O Q Operation Background Spectrum 9 Sample Spectrum 9 Ambient Chamber HVC About the High Temperature Reaction Chamber 7 Getting Ready 13 Window Installation 14 Dome Installation 15 Installing the HVC 16 Fluid Electrical Connections 17 Collecting the Background Spectrum 18 Sample Spectrum CHC About the Low Temperature Reaction Chamber Getting Ready Window Installation Dome Installation Installing the CHC Fluid Electrical Connections Collecting the Background Sp Sample Spectrum DRP M 04 TABLE OF CONTENTS Reaction Chamber Maintenance Leak Checking Cleaning the Replacing the O rings Replacing the Heater Replacing the Thermocouple Appendix A PBEM 2225652. CHC Slide the locking adapter over the rod as shown in Figure 19 e Tighten the two setscrews to secure the locking adapter e Mount the CHC mounting plate on the Praying Mantis body as described on the next page Be sure to carefully slide the mounting plate between the bottom plate of the Praying Mantis and the camlock plate CHC Mounting Plate Locking Adapter Setscrews 2 Figure 19 Installing the Locking Adapter 25 of 36 CHC Slide the CHC mounting plate Figure 20 under the Praying Mantis body locating the CHC mounting plate pin in the hole in the bottom of the Praying Mantis TM e Use the two pan head screws provided to secure the mounting plate in place CHC Mounting Plate Hole for CHC Mounting Plate Pin Thumbscrew Hole Pan Head Screws 2 CHC Locating Pin Hole Praying Mantis Figure 20 Installing the CHC Mounting Plate Top View Mount the CHC by guiding the locating pin which is directly under the CHC body into the locating hole in the DRP base e Fasten the thumbscrew Figure 21 to secure the CHC to the CHC mounting plate Dewar A 5 27 055 9 Heater Outlet Figure 21 The CHC installed CHC Mounting Plate Gas Inlet Outlet 2 Thumbscrew 26 of 36 FLUID ELECTRICAL CONNECTIONS Gas Inlet Outlet CHC temperature control is desired connect the thermocouple and the heater Figure 21 to a suita
3. GETTING READY Thumbscrew Purge Door Locking Mechanism Knob e Make sure all sample holders are removed from the sample compartment e Prior to installation collect an open beam background spectrum no accessory the sample compartment This spectrum should be used later to verify the throughput of the Praying Mantis Before installing the Praying Mantis familiarize yourself with the accessory and its various components by referring to the drawing of the Praying Mantis found below Figure 1 M5 Cap Purge Line Fitting Window Purge Sleeve Thumbscrew 2 Foam Purge Seal Rail Plate Height Adjustment Knob Sample Stage Mounting Screw Figure 1 Front View of the Praying Mantis 3 of 36 INSTALLATION AND ALIGNMENT PURGE INSTALLATION PURGE SLEEVES Loosen the thumbscrews and push the purge sleeves in to retract them Figure 2 Thumbscrew Purge Collar Figure 2 Purge Sleeves PURGE LINE For quicker purging or if the spectrometer has windows on the beam ports connect an additional purge line to the fitting on the Praying Mantis as illustrated in Figure 3 Purge Fitting lt gt Figure 3 Purge Line 4 of 36 INSTALLATION AND ALIGNMENT INSTALLING THE PRAYING MANTIS RAIL MOUNTING NOTE FIXED FLOOR MOUNTING If your spectrometer is equipped with rails Install the Praying Mantis onto the rails If you recei
4. or 25 8 ktorr the high pressure dome is required for pressures above 133 or 1 At higher pressures the maximum operating temperature may be lower HVC is made of chemically resistant 316 stainless steel Within the chamber is a temperature controlled sample stage with integral sample cup This stage incorporates a cartridge heater and a thermocouple It is thermally isolated from the outer chamber wall A water cooling jacket controls the temperature of the outer surface of the chamber and windows during high or low temperature operation The reaction chamber has three gas ports for evacuating pressurizing or flowing gas through the sample These ports are equipped with 1 4 VCO fittings The vacuum port leads directly under the sample cup the two gas ports lead into the sides of the chamber The chamber is enclosed with a dome with three windows two for the spectrometer radiation to enter and exit the chamber and the third for viewing illuminating or irradiating the sample This enables the use of the reaction chambers for photochemical studies The standard material for the observation window is UV quartz and KBr for the other two windows 20 CAUTION Parts for the high pressure and low pressure domes should not be exchanged The high pressure domes undergo high pressure testing and are guaranteed to work under the rated pressure 12 of 36 GETTING READY Before installing the High Temperature Reac
5. O Ring 16 for the Bottom Cover Kalrez ORK 016 HVC DWI 3 HVC DWM 3 HVC DWA 3 WID U43 CHC CHA Reaction Chambers Only O Ring 001 for Thermocouple Fitting Kalrez O Ring 26 for the Bottom Cover Kalrez O Ring 19 for the Dewar Kalrez ORK 001 ORK 026 ORK 019 35 of 36 APPENDIX REPLACEMENT PARTS Praying Mantis DRP ALN DRA SAP DRP SAP DRP S10 Alignment Fixture Sampling Accessory Micro sampling Cup Sampling Cup REPLACEMENT PARTS Reaction Chambers PACKING TOO umawa a wasusqkasuaqaykaca Screen Set two each of three mesh size K Type Thermocouple Flex Mounting Plug Male UV Quartz Window for the Vacuum Low Pressure Domes KBr Window for the Vacuum Low Pressure Domes O Ring 23 for the Dome Viton O Ring 13 for Windows of the Dome Viton O Ring 10 for the VCO Fittings Viton HVC Reaction Chambers Only UV Quartz Window for the High Pressure Dome 1 00 0 25 Cartridge Heater 100W 24V 24V Heater Assembly O Ring 16 for the Bot Overflow tray CHC CHA Reaction Chambers Only 24V Heater Assembly 1 00 0 25 Cartridge Heater 75W 24V O Ring 001 for Thermocouple Fitting Vi O Ring 26 for the Bottom Cover Viton O Ring 19 for the Dewar Viton Overflow tray 36 of 36 7 HARRICK x Man
6. bottom of the dome are clean and free of dust e Retract the retaining plates the as far as possible e Install the dome making sure that the orientation slot on the dome engages the orientation pin on the CHC Figure 17 e Slide the retaining plates all the way over the rim of the dome e Tighten the retaining plate screws to secure the dome Orientation slot Retaining Orientation pin Plate 2 Retaining Plate Screw 4 Co Figure 17 Installing the CHC Dome 23 of 36 CHC INSTALLING THE CHC Before installing the CHC in the Praying Mantis the Praying Mantis should have been aligned in the spectrometer e Unscrew the thumbscrew on the top plate of the Praying Mantis TM e Carefully swing the top plate of the Praying Mantis out of the way e Grasp the sample stage and unscrew its mounting screw e Slide the sample stage slightly to the left to disengage its mounting pins Remove the sample stage For spectrometers with a low working height 2 or less some additional assembly is required to mount the CHC on the Praying Mantis This includes the Varian FTIR spectrometers with serial numbers starting with DRPDI4 DRPDI5 DRPDI6 DRPDI7 and DRPDI8 e Lift the accessory out of the sample compartment and rest it on its back e Loosen the two setscrews that secure the knob and slide the knob off its rod see Figure 18 Setscrews 2 Figure 18 The Camlock Plate 24 of 36
7. focal point of the two ellipsoid mirrors The beam is condensed to a spot less than 2mm in diameter This allows analysis of very small quantities of sample A purge fitting and two purge seals are provided if purging is desired The sample is loaded in to a sample cup Two cups are included regular and micro sampling cups The sample is typically diluted in a non absorbing powder The same non absorbing powder is used to collect the background spectrum An optional ambient chamber allows the sample to be loaded in a controlled atmosphere glove box and then analyzed without being exposed to room atmosphere Two reaction chambers are available for use with Praying Mantis the high temperature chamber HVC and the low temperature chamber CHC The reaction chambers enable a reaction gas to be introduced and reacted with the sample so that the reaction can be studied in situ reaction rates determined and intermediates and reaction products identified The reaction chambers are enclosed with a dome with three windows two for the spectrometer radiation to enter and exit the chamber and the third for viewing illuminating or irradiating the sample This enables the use of the reaction chambers for photochemical studies The standard material for the viewing window is UV quartz and the other two windows are KBr 2 of 36 7 7 JHARRICK INSTALLATION AND ALIGNMENT k a OPEN BEAM SPECTRUM Prior to installation
8. the spectrum should resemble the Praying Mantis throughput spectrum shown above Slide the alignment fixture Figure 4 into the Praying Mantis with the tilted mirror going in first In this orientation the horizontal mirror is in the sampling position Gently push the alignment fixture in against the stop e The detector now measures the specular reflectance from the mirror The energy should be near zero If it is not less than 10 of the throughput measured earlier realign with the tilted mirror or contact Harrick Scientific 8 of 36 OPERATION BACKGROUND SPECTRUM Overfill one of the sampling cups Figure 7 with the reference material ie KBr Use the provided sample funnel to fill the microsampling cup Level off the surface using a flat blade e Open the purge door and slide the sample holder with the sampling cup going in first into the Praying Mantis pushing it in against the stop e Close the purge door Make small adjustments to the height of the sample using the micrometer to maximize the signal on the detector e Record the background spectrum 0 lt k Microsampling Cup Standard Sampling Cup Figure 7 Sampling Cups SAMPLE SPECTRUM e Replace the reference material with the sample e Record the sample spectrum NOTE If the sample is a strong absorber it may need to be diluted approximately 5 in a nonabsorbent matrix 9 of 36 AMBIENT C
9. 7 33 Appendix B Optional anc Replacerniarit Pant 35 UNPACKING TECHNICAL SUPPORT FEEDBACK GENERAL INFORMATION Before installing the Praying Mantis Diffuse Reflection Accessory make sure all the parts on the included check off list are present If any parts are missing or damaged contact Harrick Scientific immediately For additional information please contact our Technical Support Center at 800 248 3847 between 9 a m and 5 p m EST or e mail your questions to techsupport harricksci com Your comments and suggestions are welcome Please send them to Harrick Scientific Products Inc PO Box 277 141 Tompkins 2 floor Pleasantville NY 10570 Phone 800 248 3847 Fax 914 747 7209 E mail info harricksci com Web www harricksci com 1 of 36 gt ABOUT THE PRAYING MANTIS The Praying Mantis DRP accessory is specifically designed for examining powders by diffuse reflection spectroscopy The optical design of the Praying Mantis incorporates two 6X 90 off axis ellipsoid mirrors The ellipsoids are optically arranged so that their near focal points coincide and they are arranged to discriminate against the collection of specularly reflected radiation This is achieved by placing the collecting ellipsoid 60 away from the direction of the specularly reflected radiation The sample is placed in the common
10. HAMBER USING THE OPTIONAL Before using the ambient chamber verify that the AMBIENT SAMPLE windows o ring and groove on the bottom of the CHAMBER dome are clean and free of dust see page 17 Put the ambient chamber a glove box or similar enclosed environment e Unscrew the two thumbscrews to remove the dome Carefully fill the sample cup with the reference Clean up any spills Install the dome making sure that the larger orientation slot on the dome engages the orientation pin on the ambient chamber Dome Orientation Slot Thumbscrew 2 Orientation Pin Ambient Chamber Figure 8 The Ambient Chamber e Remove the sealed ambient chamber from the glove box e Open the purge door and slide the ambient chamber into the Praying Mantis orienting it so that the two notches on the bottom of the ambient chamber go in first e Close the purge door 10 of 36 AMBIENT CHAMBER e Make small adjustments to the height of the sample using the micrometer to maximize the signal on the detector e Record the background spectrum e Replace the reference material with the sample Record the sample spectrum 11 of 36 ABOUT THE HIGH TEMPERATURE REACTION CHAMBER HVC The HVC is designed for operation up to 910 C under vacuum the lifetime of the heater is significantly reduced at temperatures above 450 C The pressure range is from high vacuum to pressures up to 3 44
11. ainless steel Within the chamber is a temperature controlled sample stage with an integral sample cup This stage incorporates a cartridge heater and two thermocouples one in the sampling stage and one in the sample cup The sample stage is thermally isolated from the outer chamber wall A water cooling jacket controls the temperature of the outer surface of the chamber and windows during high or low temperature operation The chamber has three gas ports for evacuating pressurizing or flowing gas through the sample These ports are equipped with 1 4 VCO fittings One of the ports leads directly under the sample cup the other two lead into the sides of the chamber The chamber is enclosed with a dome with three windows two for the spectrometer radiation to enter and exit the chamber and the third for viewing illuminating or irradiating the sample This enables the use of the reaction chambers for photochemical studies The standard material for the observation window is UV quartz and KBr for the other two windows 215 caution Parts for the high pressure and low pressure domes should not be exchanged The high pressure domes undergo high pressure testing and are guaranteed to work under the rated pressure 20 of 36 CHC GETTING READY Before installing the Low Temperature Reaction Chamber CHC familiarize yourself with it by referring to the drawing of the CHC found below Figure 15 Dewar Elevation Adjustment Micro
12. ble temperature controller If the CHC is to be operated at temperatures above 100 C or below 0 C use 1 4 tubing to connect the two cooling ports see Figure 22 toa water inlet outlet or a coolant circulator If vacuum is desired connect the gas outlet 1 4 VCO fitting see Figure 22 to a vacuum pump or other source of vacuum using 3 8 1 0 vacuum tubing Seal off the two gas inlet outlet ports If reaction or process gas es are to be passed through the sample connect the gas inlet out ports 1 4 VCO fitting see Figure 22 as needed to the gas Connect the gas outlet and seal off any unused gas ports If reaction or process gas es are to be passed over the sample seal off the gas outlet Connect one of the gas inlet outlet ports to the gas source and the other as the outlet Cooling Ports Gas Outlet Figure 22 The CHC installed 27 of 36 Gas Inlet Outlet COLLECTING THE BACKGROUND SPECTRUM CHC Place a sample screen into the sample cup and locate the plastic overflow tray over the sample cup Figure 21 Fill the sample cup with the reference material using the provided packing tool Draw the straightedge across the top of the cup to level off the surface Carefully remove the overflow tray Install the dome Swing the Praying Mantis cover back into place and tighten the thumbscrew Figure 1 Fill the Dewar with liquid nitrogen or other coolant Set the temperature and p
13. d operating conditions Set the spectrometer to measure the energy on the detector Adjust the micrometer Figure 1 to maximize the signal on the detector Collect the background spectrum Sample Cup Overflow Tray Figure 14 Filling the Cup 18 of 36 SAMPLE SPECTRUM HVC Restore the reference material to ambient conditions Remove the dome Empty the sample cup This can be done by vacuuming out the reference sample or by removing the HVC from the Praying Mantis and dumping out the material If needed clean the sample cup Fill the sample cup with the sample follow procedure in the alignment section Install the dome Install the HVC into the Praying Mantis if it was removed to empty the sample cup Swing the top plate back into place and tighten the thumbscrew Figure 1 Restore the desired sampling conditions Collect the sample spectrum Empty the sample cup and clean it before running the next sample 19 of 36 CHC ABOUT THE LOW TEMPERATURE REACTION CHAMBER CHC The CHC is designed for operation from 150 C up to 600 C under vacuum The pressure range is from high vacuum 133 or 10 torr to pressures up to 304kPa or 2 3 ktorr for pressures above 133 kPa or 1 ktorr use either the high pressure dome or use SiO or ZnSe windows At higher pressures the maximum operating temperature may be lower The CHC is made of chemically resistant 316 st
14. detector Adjust the turn and tilt controls for 5 with the supplied 3 32 hex driver until the signal on the detector is maximized e Adjust the height of the alignment fixture with the height adjustment knob to maximize the signal e Adjust the turn and tilt controls for 2 Repeat this sequence until there is no further increase in the signal on the detector 6 of 36 INSTALLATION AND ALIGNMENT Figure 5 Interior View of the Praying Mantis If using rail mounting e Loosen the thumbscrews on the purge sleeves e Unlock the locking mechanism Slide the Praying Mantis along the rails until the signal is maximized Lock the locking mechanism extend the purge sleeves to the walls of the spectrometer and tighten the thumbscrews on the purge collars 7 of 36 VERIFYING THE THROUGHPUT INSTALLATION AND ALIGNMENT Make sure that the specified background spectrum is the previously collected open beam background spectrum Collect a transmittance spectrum with the Praying Mantis in the sample compartment NOTE To maximize the performance of your accessory it should be tested before first use and at regular intervals thereafter SPECULAR REFLECTANCE 1 Tr 9 4000 3500 3000 2500 2000 1500 1000 Wavenumber cm 1 Figure 6 Praying Mantis Throughput Read the maximum value at 2500 The Praying Mantis throughput at that wavenumber should be at least 40 and
15. gt APPENDIX OPTIONAL AND REPLACEMENT PARTS OPTIONAL PARTS Praying Mantis Ambient Sample Chamber DRP ASC High Temperature Reaction Chamber 24V HVC DRP 4 Low Temperature Reaction Chamber 24V FTIR CHC CHA 3 High Temperature Reaction Chamber 24V UV Vis HVC VUV 4 Low Temperature Reaction Chamber 24V UV Vis CHC VUV 3 Spectroscopic Grade KBR Powder KBR 100 OPTIONAL PARTS Reaction Chambers 024 1 ATC 024 2 VPE 001 VPE 002 WAD U23 WED U23 WFD U23 WID U23 Temperature Controller 110V Temperature Controller 220V Vacuum Pump 110V Vacuum Pump 220V UV Quartz Window for the Vacuum Low Pressure Domes Si Window for the Vacuum Low Pressure Domes CaF2 Window for the Vacuum Low Pressure Domes ZnS Window for the Vacuum Low Pressure Domes ZnSe Window for the Vacuum Low Pressure Domes WMD U23 KBr Window for the Vacuum Low Pressure Domes WPD U23 O Ring 23 for the Dome ORK 023 O Ring 13 for Windows of the Dome Kalrez ORK 013 O Ring 10 for the VCO Fittings Kalrez ORK 010 HVC Reaction Chambers Only High Pressure Dome ZnS Windows High Pressure Dome ZnSe Windows High Pressure Dome UV Quartz Windows ZnS Window for the High Pressure Dome ZnSe Window for the High Pressure Dome WMD U43 UV Quartz Window for the High Pressure Dome WAD U43
16. meter CHC Dome Sample Thermocouple Heater Access Hole Heater Thermocouple Connector Gas Outlet Gas Inlet Outlet 2 Heater Connector Thumbscrew Hole Cooling Port 2 Figure 15 Low Temperature Reaction Chamber CHC 21 of 36 CHC WINDOW INSTALLATION If the windows are not already installed or need to be cleaned or changed follow the steps below Figure 16 NOTE The observation window is the window that is located between the two semicircular indentations on the rim of the dome e Insert an o ring in one of the window ports Hold the retaining ring upside down and place a PTFE washer inside e Then carefully place a window on top of the PTFE washer Hold the retaining ring so that it continues to retain the window and thread it into the window port e Tighten to secure the window in place using the tool provided for tightening and loosening the retaining rings e Repeat these steps until all three windows are installed NOTE Be careful not to touch the windows during installation Retaining Ring 29 PTFE Washer Window O Ring Semicircular Indentation 2 Figure 16 Installing the CHC Dome Windows 22 of 36 CHC DOME INSTALLATION Although it is not necessary to install the dome until later it is recommended to become familiar with the procedure before proceeding to the next step e Prior to installation of the dome make sure that the o ring and groove on the
17. n of the dome make sure that the o ring and groove on the bottom of the dome are clean and free of dust Retract the retaining plates the HVC as far as possible Install the dome making sure that the orientation slot on the dome engages the orientation pin on the HVC Figure 11 e Slide the retaining plates all the way over the rim of the dome Tighten tne plate screws to secure the dome Orientation slot Retaining Plate Screws 4 Orientation pin Figure 11 Installing the HVC Dome 15 of 36 HVC INSTALLING THE HVC Before installing the HVC in the Praying Mantis make sure that the Praying Mantis is aligned the spectrometer e Unscrew the thumbscrew on the top plate of the Praying Mantis Figure 1 e Carefully swing the top plate of the Praying Mantis out of the way e Grasp the sample stage Figure 12 and unscrew its mounting screw Slide the sample stage slightly to the left to dislocate its mounting pins e Remove the sample stage e Locate the mounting pins on the side of the HVC Figure 9 in the pin holes where the sample stage was located e Reinstall and tighten the sample stage mounting screw Mounting Screw Sample stage Mounting Pins 2 Figure 12 Installing the HVC 16 of 36 Gas Inlet Outlet Gas Outlet A Gas Inlet Outlet Thermocouple Figure 13 The HVC Installed HVC FLUID ELECTRICAL If tempe
18. rature control is desired connect the thermocouple and the heater Figure 13 to a CONNECTIONS suitable temperature controller e If the HVC is to be operated at temperatures above 100 C use 1 4 tubing to connect the two cooling ports see Figure 13 to a inlet outlet or a coolant circulator water If vacuum is desired connect the gas outlet 1 4 VCO fitting see Figure 13 to a vacuum pump or other source of vacuum using 3 8 1 0 vacuum tubing Seal off the two gas inlet outlet ports e If reaction or process gas es to be passed through the sample connect the gas inlet out ports 1 4 VCO fitting see Figure 13 as needed to the gas source s Connect the gas outlet and seal off any unused gas ports e If reaction or process gas es to be passed over the sample seal off the gas outlet Connect one of the gas inlet outlet ports to the gas source and the other as the outlet 17 of 36 COLLECTING THE BACKGROUND SPECTRUM HVC Place a sample screen into the sample cup and locate the plastic overflow tray over the sample cup Figure 14 Fill the sample cup with the reference material using the provided packing tool Draw the straightedge across the top of the cup to level off the surface Carefully remove the overflow tray Install the dome on the HVC see page 15 Swing the Praying Mantis cover back into place and tighten the thumbscrew Set the temperature and pressure to desire
19. ressure to desired operating conditions Set the spectrometer to measure the energy on the detector Adjust the elevation adjustment micrometer on the CHC Figure 15 to maximize the signal on the detector Collect the background spectrum 28 of 36 SAMPLE SPECTRUM CHC Overflow Tray Sample Cup Figure 23 Filling the Cup Restore the reference material to ambient conditions Remove the dome Empty the sample cup This can be done by vacuuming out the reference sample or by removing the CHC from the Praying Mantis and dumping out the material If needed clean the sample cup Fill the sample cup with the sample follow procedure in the alignment section Install the dome see page 23 Install the CHC into the Praying Mantis if it was removed to empty the sample cup Swing the top plate back into place and tighten the thumbscrew Figure 1 Restore the desired sampling conditions Collect the sample spectrum Empty the sample cup and clean it before running the next sample 29 of 36 H LEAK CHECKING CLEANING THE REACTION CHAMBERS j REACTION CHAMBER MAINTENANCE The Reaction Chambers have been carefully checked for leaks before shipment However each time the Reaction Chambers are disassembled and reassembled leaks may develop due to improper setting of the o rings If leaks occur carefully inspect all o rings and sealing surfaces for damage and contamina
20. rs should be replaced periodically The Reaction Chambers have o rings for sealing the windows o rings for sealing the access holes o rings on the fittings and an o ring to seal the dome to the Reaction Chamber To the HVC heater Remove the HVC from the Praying Mantis Loosen the screw on the side of the HVC that anchors the heater wire to the HVC Remove the two screws at the back of the HVC that clamp down the heater and thermocouple wires Push a small blunt object through the heater access hole Figure 9 at the front of the HVC Slide the heater out the back of the unit To install a new heater coat the heater with MgO powder Maalox or the equivalent Slide it into the HVC until it hits the stop Make sure that the heater is inserted completely into the body before re securing the wire To replace the CHC heater Remove the CHC from the Praying Mantis TM Push a small blunt object through the heater access hole Figure 15 at the opposite side of the heating wires Slide the heater out the other side of the unit To install a new heater coat the heater with MgO powder Maalox or equivalent antacid Slide it into the CHC until it hits the stop Make sure that the heater is inserted completely into the body before re securing the wire 31 of 36 REPLACING THE THERMOCOUPLE REACTION CHAMBER MAINTENANCE To replace the HVC thermocouple Remove the HVC from the Praying Mantis TM Loosen
21. the screw on the side of the HVC that anchors the thermocouple wire to the HVC Remove the two screws at the back of the HVC that clamp down the heater and thermocouple wires Gently pull out the thermocouple Slide the new thermocouple into the HVC until it hits the stop Make sure that the thermocouple is inserted completely into the body before re securing the wire To the CHC thermocouple Remove the from the Praying Mantis TM Gently pull out the thermocouple Slide the new thermocouple into the CHC until it hits the stop Make sure that the thermocouple is inserted completely into the body before re securing the wire 32 of 36 HARRICK APPENDIX A MOUNTING THE To install the supplied rail plate onto the floor of the HARRICK RAIL PLATE compartment of your spectrometer Remove any existing sample holders from the floor of the spectrometer Install the rail plate in the orientation indicated in Figure 24 See Table 1 on the next page for the appropriate screws holes for your spectrometer Harrick Rail Plate Mating Plate Figure 24 Screw and Pin Positions for Rail Plate 33 of 36 APPENDIX FTIR SPECTROMETERS VARIAN or DIGILAB All Models MATTSON Polaris Galaxy RS Infinity Genesis Satellite PERKIN ELMER Spectrum 1 THERMO NICOLET Nexus Avatar Magna Impact Table 1 Screw and Pin Positions for Rail Plate 34 of 36 HHARRICK gt
22. tion Small leaks can be pinpointed using a Helium Leak Detector Contact Harrick Scientific Products Inc for advice and or repair information To thoroughly clean the reaction chambers follow the procedure below To clean the HVC Vacuum out the sample or remove the HVC from the Praying Mantis remove the dome turn the HVC upside down and dump out the sample Use solvent to clean off the remaining sample Unscrew the eight screws that secure the bottom cover of the HVC Remove the bottom cover to reveal three access holes Gingerly wipe or blow clean air through these holes to clean the interior of the HVC When the interior is clean make sure the o rings on the bottom plate are clean and free of dirt Re install the bottom cover To clean the CHC e Vacuum out the sample or remove the CHC from the Praying Mantis remove the dome turn the CHC upside down and dump out the sample e Use solvent to clean off the remaining sample e Unscrew the four screws that secure the bottom cover of the CHC e Remove the bottom cover to reveal the access hole Gingerly wipe or blow clean air through the hole to clean the interior of the CHC When the interior is clean make sure the o ring on the bottom plate is clean and free of dirt Re install the bottom cover 30 of 36 REPLACING THE O RINGS REPLACING THE HEATER REACTION CHAMBER MAINTENANCE The o rings used by the Reaction Chambe
23. tion Chamber HVC familiarize yourself with it by referring to the drawing of the HVC found below Figure 9 HVC Dome Gas Inlet Outlet Gas Outlet Mounting pins 2 Thermocouple Connector Inlet Outlet Heater Connector Heater Access Hole Figure 9 The High Temperature Reaction Chamber HVC 13 of 36 HVC WINDOW INSTALLATION If the windows are not already installed or need to be cleaned or changed follow the steps below Figure 10 NOTE The observation window is the window that is located between the two semicircular indentations on the of the dome e Insert o ring one of the window ports e Hold the retaining ring upside down and place a PTFE washer inside e Then carefully place a window on top of the PTFE washer Hold the retaining ring so that it continues to retain the window and thread it into the window port e Tighten to secure the window in place using the tool provided for tightening and loosening the retaining rings e Repeat these steps until all three windows are installed NOTE Be careful not to touch the windows during installation Ring 40 PTFE Washer Semicircular Indentation 2 Figure 10 Installing the HVC Dome Windows 14 of 36 HVC DOME INSTALLATION Although it is not necessary to install the dome until later it is recommended to become familiar with the procedure before proceeding to the next step e Prior to installatio
24. ual Part DRP M 04 6 P P Vn TV 2009 Harrick Scientific Products Inc Transmittance 80 70 60 50 40 30 20 10 0 4000 3000 2000 1000 Wavenumbers 1 Date Wed Feb 24 12 32 26 2010 GMTWed Feb 24 12 32 17 2010 GMT 05 00 DRPNI85999011001 Scans 8 Resolution 8 000
25. ved the Harrick rail plate with your Praying Mantis first mount the supplied rails directly onto the floor of the sample compartment see Appendix A Move the Praying Mantis along the rails until the spectrometer focal point is in the center of the attachment Lock the Praying Mantis in place by tightening the locking mechanism knob Extend the purge sleeves until they firmly contact the sides of the sample compartment Lock the purge sleeves in place with the thumbscrews Install the Praying Mantis onto the floor of the sample compartment using the base plate provided Extend the purge sleeves to the walls of the spectrometer and tighten the thumbscrews on the purge collars 5 of 36 INSTALLATION AND ALIGNMENT ALIGNING THE The Praying Mantis has been pre aligned prior to PRAYING MANTIS shipment Hence it requires only minor adjustments to optimize its performance e Open the door on the front of the attachment Figure 1 e Slide the alignment fixture Figure 4 into the Praying Mantis with the horizontal mirror going in first In this orientation the tilted mirror is in the sampling position e Gently push the alignment fixture in against the stop Tilted Mirror Horizontal Mirror Figure 4 Alignment Fixture Remove the plastic caps over mirrors M2 and 5 This allows access to the turn and tilt adjustments for these mirrors Figure 5 e Set the spectrometer to measure the energy on the
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