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Isotopic N20 Analyzer (δ 15N, δ 15N , δ 15N , δ 18O) User Manual

1. L G R Los Gatos Research A MEMBER OF THE ABB GROUP Isotopic N20 Analyzer 5 15N 5 Ne 5 TSNB 5 189 User Manual Model 914 0027 Los Gatos Research 67 East Evelyn Avenue Suite 3 Mountain View CA 94041 Phone 650 965 7772 Fax 650 965 7074 www lgrinc com Document No 914 U027 Revision 01 Release Date 2 4 2015 COPYRIGHT 2014 Los Gatos Research Inc All rights reserved Rights reserved under the copyright laws of the United States RESTRICTED RIGHTS LEGEND Use duplication or disclosure by the United States Government is subject to restriction as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 Notwithstanding any other license agreement that may pertain to or accompany the delivery of this computer software the rights of the United States Government regarding its use reproduction and disclosure are as set forth in the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 TRADEMARKS MN WARNING This Analyzer contains a Class IIIB laser inside The Class IIIB laser inside this analyzer complies with 21CFR1040 10 and 21CFR1040 11 Take appropriate precautions to ensure that the laser is off when the analyzer cover is removed DANGER DANGER gt Invisible laser radiation INVISIBLE LASER RADIATION when open amp interlock AVOID DIRECT EXPOSURE TO BEAM failed or defeated Avoid eye or skin DO NOT STARE INTO LIGHT
2. File System Integrity Check Screen 16 Isotopic N20 Analyzer Run the Analyzer Main Panel Whenever the analyzer is turned on or rebooted the Main Panel defaults to the Numeric Display Figure 14 The analyzer draws in gas and the numeric display shows N20 isotopes in parts per billion ppb mixing ratio units see Figure 14 User Interface Control Bar The User Interface Control Bar is displayed at the bottom of the screen see Figure 13 and Figure 14 and lets you easily control the operation of the analyzer by using the icons described below Parameter Window pat PLATOS Pi O A A y ae he ml Time Stamp Cell Temperature Thu Aug 28 13 30 45 2014 Gas Temperature 40 99 C Laser AT 16 40 us Rate 244 80 Torr MIU File name Percent of available Cell Pressure Laser A mirror MIU channel disk space on HD Torr ring down time microseconds Figure 13 User Interface Control Bar e Display Controls how the data is displayed in the Main Panel Data is displayed in the Main Panel in one of the three ways described below Click on the Display button to change how the data is displayed e Numeric Display Default display this display appears when the analyzer is turned on or rebooted Displays the numeric readout of the last measurement see Figure 14 e Spectrum Display Displays the raw and fitted spectral scans see Figure 15 e TimeChart Display Displays the concentration over time
3. To initialize the Isotopic N20 Analyzer Press the power switch on the front of the analyzer to the ON position The internal computer initializes and a screen Figure 9 displays as the program loads Figure 9 Start up Screen in Busy Mode Isotopic N20 Analyzer 13 Run the Analyzer The Launch Service screen displays Figure 10 when the initialization is complete Manually launch the analyzer skip countdown N20 Isotope Launch the N20 Isotope Analyzer Click SERVICE to change auto launch settings or SHUTDOWN maintenance settings Figure 10 Launch Service Screen 4 Click on the N2O Isotope button If you don t make a selection within 120 seconds the analyzer automatically defaults to Main Panel Numeric display see Figure 14 5 Click on the maintenance SERVICE button if you need more time or need to choose a file maintenance menu see Figure 10 Once a month the analyzer automatically performs a thorough file system MN integrity check during startup This maintenance takes approximately one to two minutes before it continues to load the software Important p Do not turn off the computer during the monthly maintenance Thermal Stabilization Run the analyzer for four hours before collecting data This allows the internal temperature to stabilize The exact final cell temperature will be analyzer specific 45 C 14 Isotopic N20 Analyzer Run the Analyzer The Auto Launch Screen The Au
4. see Figure 16 e Rate Lets you adjust the rate at which data is written to the log file e Parameter Window Displays the clock time current log filename gas temperature gas pressure cavity ring down time and remaining space on the hard drive e File Transfer Allows easy transfer of files onto USB storage devices e Setup Accesses additional configuration and service menus e Exit Exits the application and shuts down the analyzer Isotopic N2O Analyzer 17 Run the Analyzer Main Panel Display Click Display to change the Main Panel display see Figure 14 Clicking Display multiple times lets you cycle through the main panel displays When the analyzer is launched it defaults to the Numeric display The three display functions are e Numeric e Spectrum e TimeChart This section describes the main panel displays Numeric Display This is the default display It appears when the analyzer is first turned on or re initialized Figure 14 shows the numeric readout of the last measurements of N2O isotopes in parts per billion ppb mixing ratios N20 333 65 PPB di5NA 11 48 d15NB 7 29 dci d180 43 07 Numeric Display H20 177 41 PPM SP 18 77 4 Data File N20i50_ 2014 08 28 10006 0a Gas Pressure 44 80 Torr MIU Disk Space 48 Control Bar Time Thu Aug 28 13 30 45 2014 Gas Temperature 40 99 C Laser At 16 40 ys Rate User nte rfa Ce a Click the Display Button to
5. 20_f0000 txt zip N20iso_2014 08 20_f0001 txt zip N20iso_2014 08 20_f0002 txt zip N20iso_2014 08 20_f0003 txt zip N20iso_2014 08 20_f0004 txt zip N20iso_2014 08 20_f0005 txt zip N20iso_2014 08 20_f0006 txt zip N20iso_2014 08 20_f0007 txt zip N20iso_2014 08 20_f0008 txt zip N20iso_2014 08 20_f0009 txt zip N20iso_2014 08 20_f0010 txt zip N20iso_2014 08 20_f0011 txt zip N2Oiso_2014 08 20_f0012 txt zip N20iso_2014 08 20_f0013 txt zip N20is0_2014 08 20_f0014 txt zip N20iso_2014 08 20_f0015 txt zip N20iso_2014 08 20_f0016 txt zip N2Oiso_2014 08 20_f0017 txt zip N20iso_2014 08 20_f0018 txt zip N20iso_2014 08 20_f0019 txt zip N20iso_2014 08 20_f0020 txt zip N20iso_2014 08 20_f0021 txt zip N20iso_2014 08 20_f0022 txt zip N20iso_2014 08 20_f0023 txt zip N20iso_2014 08 20_f0024 txt zip N20iso_2014 08 20_f0025 txt zip N20iso_2014 08 20_f0026 txt zip USB Flash Drive a media 20 Aug 2014 14 06 20 Aug 2014 14 10 il floppy i floppy0 20 Aug 2014 14 16 20 Aug 2014 14 20 20 Aug 2014 14 53 20 Aug 2014 15 00 20 Aug 2014 15 00 20 Aug 2014 15 04 20 Aug 2014 15 12 20 Aug 2014 15 12 20 Aug 2014 15 19 20 Aug 2014 15 26 20 Aug 2014 15 29 20 Aug 2014 15 31 20 Aug 2014 15 34 20 Aug 2014 17 05 20 Aug 2014 17 05 20 Aug 2014 17 06 20 Aug 2014 17 06 20 Aug 2014 17 08 20 Aug 2014 17 11 20 Aug 2014 17 13 20 Aug 2014 17 14 20 Aug 2014 17 28 20 A
6. 29 TimeCharuDISPlaY sra 20 U User Interface SEUD PINE Eoia tucens euntoousteceeomsstemeeween oaseeetors 28 User Interface Control Bar ooccccoccnnnnnccncnacononacononanonono 17 File Transfer WIC MU slo 22 Rate CONTO rs o ia 21 83 Index W Wa a o E 81 Return Material Authorizati0N ccccooccncnncnnonacnnonns 81 Windows Wireless Devices Setting Up TO USE id 63 Wireless Devices Setting UP to ACCESS analyzer ooccccnnccncnncononncononanonos 55 Wireless Router Access Point descriptio ooccccoonocccnconococncnnarncnnonanos 46 Access Point Mode configuration coocccccccnncnnnnonono 48 84 Android SUD ao 55 Client Bridge Mode Configuration ooocccnccnocnnnnonooo 49 Client Bridge Mode descriptiON ccccooocccncononcnnnnnos 46 Setting up Devices for use With cccconccccnnccncnnconnnos 55 WINdOWSSetUPainaariada id 63 Wireless Router Mode configuration ooocccccoomo 47 Wireless Router Mode descriptiON cccooocccnccnoooso 46 Wireless Router Client Bridge SEUS WIEN ridad cia ici 51 Wireless Router Setup Optional coocooommmmmmmmmooo 46 Isotopic N20 Analyzer
7. Injection System 74 Isotopic N20 Analyzer Batch Mode Operation Hardware Setup Batch mode hardware includes e Asyringe injection port Figure 86 e A zero air inlet 1 4 Swagelok port Figure 86 e A Syringe for batch injection Figure 87 and needle Connect Zero Air N20 free air to the Zero Air port on the back panel Figure 86 Zero air flow should be between 5 and 10 psig gp Se A aR E EN Ep na aF o a 0 Loe Gatos Research f _ aa o lor lisotopic NO Analyzer a r F A F SN Siw alla bem a i y S e L ET Figure 86 Batch Injection Mode Ports Figure 87 Syringe for Batch Injection 75 Isotopic N20 Analyzer Batch Mode Operation Software Setup To select batch injection 1 Click on the Rate button on the left side of the User Interface Control Panel Figure 88 Rate Button Time Wed Oct 1 08 39 41 2014 Gas Temperature 46 48 C Laser Ar 15 25 ps Rate Data File M204s0 2014 10 01_f0000tt Gas Pressure 45 12 Torr MIU Disk Space 63 Figure 88 Click the Rate Button The Operating Mode pop up menu displays See Figure 89 2 Select either a Syringe Injection for gt 60 ml samples of N20 lt 10 ppm of N20 b Syringe Injection Dilution x10 for gt 10 ml samples of N20 gt 3 ppm of N20 3 Click Save When you select Dilutionx10 the sample will be diluted by filling the cavity More with
8. Lacasa Pam Color Mode P Disconnect Ctri Alt Del Figure 55 Android vnc viewer Install Screen 9 Open the VNC application on the Android device by clicking on the VNC application icon Ka Figure 56 androidVNC Figure 56 VNC Application Icon 56 Isotopic N20 Analyzer Wireless Router Setup 10 The Android VNC screen appears Figure 57 andra VNC i On rection 192 168 100 100 5900 Connect i Micknare berg 2 Enter Igrvnc in the password field 3 Click on Connect Address 1 Enter the IP address of the analyzer in the address field Par Username Color Format 64 colors 1 bpp Figure 57 VNC Application Installation Setup Screen 11 Inthe Address field type the correct address of the analyzer either be 192 168 100 100 or 192 168 100 101 that you recorded in in Step 7 the IP Address of the analyzer will be whichever address the Android device is not For example if the IP address of the Android device that was displayed in Step 7 is 192 168 100 101 then the IP address of the analyzer will be 192 168 100 100 12 In the Password field type Igrvnc 13 Tap the Connect button to connect the Android device to the analyzer The analyzer software interface screen displays on the device the screen size is adjustable to fit the screen of the device Figure 58 Transmitted Intensity Absorption az I E A FA iS 7 j z F z r z a Fig
9. OK In a short time usually between 10 and 60 seconds for the first access a Windows Share directory window displays a subdirectory lgrdata 3 Double click on the Igrdata directory to see a listing of the data files stored on the internal hard disk drive of the analyzer 4 Open or transfer any of the data files as you would with any Windows share drive Isotopic N2O Analyzer 43 Accessing Data Using an Ethernet Connection Additional Notes The analyzer shared data directory may not be visible by browsing for it in Windows Network Neighborhood If it is it is in the LGR workgroup The computer name will be LGR XX XXXX where XX XXXX is the analyzer serial number You can open the data file that is currently being written into by the analyzer without interrupting the analyzer operation a snapshot of the file as it was displayed when you opened it Notice that the current data file is only updated occasionally every four KB of data so a new data file will appear empty until enough data is collected and written to the disk If a LAN is not available plug the analyzer into a simple standalone broadband router such as Netgear Model RP614 to enable the analyzer to obtain a DHCP address from the router when the analyzer is started You can then plug any Windows computer into the same broadband router and access the data directory A crossover Ethernet cable will NOT allow an external computer to access the shared data directory as the a
10. Parameter Window toggle between displays Figure 14 Main Panel in Numeric Display 18 Isotopic N20 Analyzer Run the Analyzer Spectrum Display Click Display on the User Interface Control Bar to switch to Spectrum display The Spectrum display consists of two plots see Figure 15 e The top plot shows the voltage from the photodetector as the laser scans across the N20 isotope absorption features e The bottom plot shows the corresponding optical absorption displayed as black circles The measured N20 isotope concentrations are shown in parts per billion ppb Transmitted Intensity Top plot shows voltage from photodetector Absorption Bottom plot shows optical absorption Absorption o x o e 14y My 180 a 14N Sp 150 B 15N no N20 334 18 PPB d15NA 17 08 o d15NB 7 50 o d180 70 16 o H20 208 09 PPM SP 9 58 o APN Time Thu Aug 28 13 30 55 2014 Gas Temperature 40 99 C Laser At 16 40 ys Rate 2s S X y ae Data File N2Oiso_2014 08 28 f0006 txt Gas Pres E 44 80 Torr MIU Disabled E A Disk Space 48 14 N My 16p Figure 15 Main Panel in Spectrum Display Isotopic N20 Analyzer 19 Run the Analyzer TimeChart Display 1 Click Display to switch to TimeChart display 20 Figure 16 shows a TimeChart display with a continuous record of N20 isotope measurements A 10 point running average in black is shown going through the raw data shown
11. Password field enter the wireless password on the sticker on the router in this case BO8CDB18 and click Join Enter the password for ZyXEL 0335CB Cancel Enter Password Password Figure 61 Router Connection Screen The Network Connections screen Figure 62 confirms that the OS device is connected to the router FCT Q Y ZyXEL 0335CB a Messages Figure 62 Router Connection Confirmation Screen 5 Click on the Network to check the IP address 192 168 100 100 or 192 168 100 101 of the device as shown in Figure 63 MN Remember the IP Address because you will need Step 10 ZyXEL 0335CB Forget this Network Notifications Ea Location Services on DHCP BootP Static xd Brightness amp Wallpaper IP Address 182 168 100 101 The IP address of the remote device El Picture Frame Subnet Mask 255 255 255 0 ig General Router 192 168 100 1 pal iCloud DNS 192 168 100 1 A Search Domains Realtek Twitter Client 1D T Renew Lease W Music HTTP Proxy y Video Off Manual Auto Figure 63 Device IP Address Confirmation Screen Isotopic N20 Analyzer 59 Wireless Router Setup 6 Install VNC software connect with VNC software by searching and installing it from the App store Mocha VNC Lite for iOS is the software used in this example Figure 64 Internet connection is required for this step Complete instructions for installing Mocha VNC Lite for iOS can be found online at htt
12. Space 48 Exit Button Figure 32 User Interface Control Bar Exit Button 2 Click the OK button to halt data acquisition close the current data file and display the shutdown screen Figure 33 Transmitted Intensity 0 2 0 25 2 0 3 035 0 4 0 45 0 5 0 200 400 600 800 U Do you wish to shutdown y Click OK to shut down the analyzer 0 Frequency GHz N20 333 21 PPB d15NA 3 08 o d15NB 16 53 o d180 52 91 o H20 182 66 PPM SP 19 61 o Figure 33 Analyzer Shutdown Prompt Isotopic N20 Analyzer 37 Run the Analyzer 3 Afterthe You may turn off the instrument message displays Figure 34 you can safely shut off power to the analyzer by pushing the OFF switch on the front of the analyzer You may turn off the instrument Figure 34 Analyzer Final Shutdown Screen 38 Isotopic N20 Analyzer Warrenty 4 Maintenance Daily Operation Checklist Table 2 describes maintenance tasks that should be performed on a regular basis to keep your isotopic N20 Analyzer operating smoothly Table 2 Maintenance Checklist Frequency ae On the Spectrum screen verify that the spectrum is correct The spectrum must look like the screen in Figure 15 Familiarize yourself with the normal appearance of this characteristic spectrum It is the best diagnostic of analyzer performance Any deviations from normal could indicate a problem with the analyzer UE cave Log the transmit
13. Tab Optional This panel Figure 30 configures the control of the optional Multi port Inlet Unit MIU if present If the MIU is not present it should be disabled in this menu MIU Tab Selected Unknown Gas Valve Sequence Reference Gas Valve Sequence t e a t Description z Description 1st miu ref 3rd miu ref 5th miu ref 6th miu ref 7th miu ref jalwe ca EM a EM CM CR CM CM CM CH Cm CM CM CM 2 pl c 2 kaz La E i 0 a i 7 4 w uN i Y 1 le la W al Y i A g e 3 E e oO mm bw ls Figure 30 Control Panel for the Optional Multi Port Inlet Unit Isotopic N20 Analyzer 35 Run the Analyzer DCS Tab Use this tab to enable or disable the Dilution Control System DCS Figure 31 shows the DCS Tab Figure 31 DCS Tab See Appendix D for detailed instructions on setting up and operating the DCS 36 Isotopic N20 Analyzer Run the Analyzer Shut Down the Isotopic N20 Analyzer To shut down the isotopic N20 analyzer complete the following steps 1 Click the Exit button on the User Interface Control Bar See Figure 32 The Exit button prompts you to verify that you want to shut down the analyzer to prevent accidental button presses from causing interruption in data acquisition E ON Time Thu Aug 28 13 30 45 2014 Gas Temperature 40 99 C Laser At 16 40 ys Rate l i KA Data File N20iso_2014 08 28_10006 txt Gas Pressure 44 80 Torr Disk
14. and target lines Time Files Calibration Laser Adjust MIU DCS PR Peaks of absorption features offset from target lines indicates laser needs 025 adjustment 0 35 4 Target lines for laser 0 200 400 600 800 1 000 Adjust laser voltage to Laser Voltage 0 175 shift absorption features Enable to release automatic laser control x Close Figure 28 Laser Adjust Tab Isotopic N20 Analyzer 33 Run the Analyzer Manually Adjust the Laser Offset 1 Zi 2 From the Setup menu select the Laser Adjust tab Select the Disable Laser Frequency Lock to allow manual control of the laser Adjust the laser voltage using the arrow buttons to shift the peaks until they are centered on their respective target lines Deselect Disable Laser Frequency Lock The software resumes automatic tracking and control of the laser wavelength Click Close to exit the menu and return to the Main panel Figure 29 shows the Laser Adjust tab with the laser voltage adjusted so that the absorption features are centered on the target lines Time Files Calibration Laser Adjust MIU DCS 0 2 Peaks of absorption aligned with target lines indicates no adjustment needed 0 3 04 y 0 5 0 200 400 600 800 1 000 Laser Voltage Disable Laser Frequency Lock Click to enable disable Figure 29 Laser Offset 34 Isotopic N2O Analyzer Run the Analyzer Manifold Menu for Multi Port Inlet Unit
15. existing network to connect wirelessly to the analyzer Figure 42 Use one of these methods to make the analyzer wirelessly accessible For wireless control of the analyzer using a remote device install the appropriate VNC virtual network client software on your remote device Isotopic N20 Analyzer 45 Wireless Router Setup Configure the Router for Wireless Router Mode To configure the wireless router for wireless Router Mode slide the mode switch on the router to the Router Figure 37 AP Router Figure 37 Switch On Wireless Router Set to Wireless Router Mode Figure 38 shows a wireless router configuration In Wireless Router Mode the wireless router e Forms its own network e Issues IP addresses to the analyzer and client devices using DHCP Dynamic Host Configuration Protocol This mode is primarily intended for standalone operation of the analyzer in the field Router Mode LGR Analyzer Wireless Router DHCP Laptop with Wireless Figure 38 Wireless Connection Diagram in Router Mode Configure your wireless devices to connect to the analyzer 1 Install VNC virtual network client software on your wireless device 2 Join the wireless router network See Appendix D for detailed instructions 46 Isotopic N20 Analyzer Wireless Router Setup Configure the Router for Access Point Mode To configure the wireless router for Access Point mode slide the mode switch on the router to the AP position S
16. in color Click on the drop down box in the lower right corner of either window to change displays of N20 isotope concentrations The data is saved to a file displayed at the left corner of the Parameter window etl PIET m I Ma lol a bat utili DELEA brote a ale dena A Ae TE Lo oS all ea SA ofl MF eatin Hat leek IE E Ei PANAS EN PTY cl Ff th y del etn dE a ile Te gle J l a tha ig roe ian 3 10209 131329 43 16 40 43 20 09 pad 43 26 40 43 30 09 N20 0 0 Dr ah E Click on the drop d a he Leo 831 Ick on the drop down A Ds s Lis A y i dd at gi nig ae Se Lathe re boxes to change the r S E ay E II T Es Th Oi NS wig id displays of N20 isotope al AL ae p 3 p f s a pi T A 3 concentration 3000 320 43 16 40 32000 43232 32640 43 30 00 dISNA 0 0 y N20 333 58 PPB d15NA 10 91 o d15NB 7 34 o d180 63 47 H20 148 08 PPM SP 18 25 o File Name Figure 16 Main Panel in TimeChart Display Isotopic N20 Analyzer Run the Analyzer Rate Control You can change the rate at which data is written to the log file 1 Click on Rate button clock icon on the User Interface Control Bar Figure 13 The Rate Control Adjustment panel appears Figure 17 2 Click on the rate radio buttons Figure 17 to select the rate Data is acquired at 1 Hz rate and averaged for a selected interval 1 to 100 seconds before being written to the data file and plott
17. that you have all of the system components before you begin the installation For the basic free flow system you should have e Isotopic N20 Analyzer e Analyzer power cord e User guide this document e USB flash drive e Serial port connection cable null modem type e Exhaust Muffler Optional Components External Pump System optional e External pump KNF N920 KNF N940 or Edwards XDS 35i e Pump connection kit e Pump slave power cord Multiport Inlet Unit optional e Multiport Inlet Unit e Power Cable e 25 pin connection cable for control signal Batch Injection System optional e Syringe injection port e 140 ml syringe If you have not received all of these components contact LGR at 1 650 965 7772 or supportOlgrinc com Isotopic N20 Analyzer 5 System Overview Isotopic N20 Analyzer Front and Back Panels Figures 1 and 2 show the front and back panels of the isotopic N20 analyzer Los Gatos Research Figure 1 Front Panel LION O DI RS ZERO AIR INLET DCS O O O SAMPLE INERNAL PUMP TO EXT PUMP INLET EXHAUST l USB ETHERNET Edo O SERIAL VIDEO O Ja Figure 2 Back Panel 6 Isotopic N20 Analyzer System Overview Power Connections This section describes the power connections for the analyzer Figures 3 and 4 show the power connection and Table 1 describes the connections Connect to the main power using the fused power entry module on the back p
18. the laser is tuned over a selected absorption feature of the target species e The measured absorption spectra is recorded and used to determine a quantitative measurement of mixing ratio directly and without external calibration when combined with the recorded Measured gas temperature and pressure in the cell Effective path length Known line strength 42 Isotopic N20 Analyzer Accessing Data Using an Ethernet Connection Appendix B Accessing Data Using an Ethernet Connection Appendix B explains how to access the analyzer data directory as a Windows Share using an Ethernet connection on a local area network LAN The data files stored on the internal hard disk drive of the analyzer can be accessed as a Windows Share over a Local Area Network LAN Ethernet connection For this function to operate the analyzer must e Be connected to a Local Area Network LAN via the RJ 45 Ethernet connection on the rear panel e Receive a response to a DHCP Dynamic Host Configuration Protocol request when the analyzer is booted If the analyzer does not receive a reply the analyzer e Disables the Ethernet port e Does not attempt another DHCP request until the analyzer is restarted When both conditions are met the data directory can be accessed using a Windows computer on the same LAN 1 Click Start gt Run and type the following into the Open field LGR XX XXXX where XX XXXX is the serial number of the analyzer 2 Click
19. 00 1 i 1 1 1 1 1 1 1 000000e 03 9 9 8 8 7 7 7 6 6 6 5 5 4 1 d180 000000e 03 e00000e 03 200000e 03 eeeeeee o3 200000e 03 000000e 03 e00000e 03 000000e 03 200000e 03 746866e 02 436425e 02 978546e 02 446631e 02 970191e 02 593546e 02 175489e 02 731114e 02 400394e 02 045436e 02 502249e 02 192537e 02 599694e 02 Isotopic N20 Analyzer Run the Analyzer The Time column reports the time stamp of each recorded measurement its format is set in the File Settings menu of the Setup panels see Figure 24 Also reported are e H20 ppm e N20 isotope ppm e d15Na e d15Nb e d180 e d15N e SP e Cell pressure Torr e Cell temperature Celsius e Ambient Temperature Celsius e Ring Down Time microseconds For each of these measurements there is an adjacent column reporting the standard error of the measurement designated with a_ sd tag e The standard deviation is zero when the analyzer is running at 1 Hz as no averaging of data has taken place e At speeds slower than 1 Hz the standard error of the average is reported e At the end of each data file are encoded listings of settings used by the analyzer for that data file e The settings are stored for diagnostic or troubleshooting purposes Transfer Data Files To transfer data files from the analyzer hard disk to a USB storage device 1 Insert a USB storage d
20. 14 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 e Data columns with time e Water concentration e N20 isotope concentration e Cell pressure e Cell temperature Figure 18 shows a typical standard data file i Time 207 188 169 152 134 117 099 082 064 047 029 011 995 978 960 943 925 907 889 871 854 836 820 13 13 13 135 133 13 13 13 13 133 137 135 13 197 133 137 13 13 133 13 13 13 13 EHHH 22 DO fp ps pa q RP RP A MN NN Y wwe Pb PUD woe N20 _ppm 023208e 01 585090e 00 319298e 00 169254e 00 349302e 00 826449e 00 549197e 00 983681e 00 449491e 00 048706e 00 721390e 00 452419e 00 207437e 00 005645e 00 817929e 00 662911e 00 530081e 00 412629e 00 303029e 00 206974e 00 119837e 00 041994e 00 691998e 01 N20 _ppm_sd 50000000000000000000000 e00000e 00 9 000000e 00 9 000000e 00 9 000000e 00 9 000000 00 9 000000e 00 000000e 00 9 000000e 00 9 000000e 00 8 000000 e 00 8 e00000e 00 8 000000e 00 7 000000e 008 7 000000 00 7 000000 e 08 6 000000e 00 6 000000e 00 6 e00000e 00 5 000000e 00 5 i wo e000000e 00 4 e00000e 00 4 000000e 00 4 e00000e 008 3 diSNA 543920e 02 591838e 02 483
21. 279e 02 391600e 02 299979e 02 268968e 02 207932e 02 e25161e 02 739476e 02 499199e 02 235047e 02 928394e 02 593756e 02 253775e 02 3891006e 02 494073e 02 120707e 02 789960e 02 437339e 02 961835e 02 632677e 02 222965e 02 823201e 02 5050000000000000000000000 dISNA_sd 000000e 00 9 000000e 00 9 000000e 00 9 000000e 00 9 000000e 00 9 000000e 00 9 000000e 00 9 000000e 00 9 000000e 00 9 000000e 00 9 eeeeeee e0 9 000000e 00 8 000000e 00 8 000000e 00 8 000000e 00 7 000000e 00 7 000000e 00 7 000000e 00 6 000000e 00 6 000000e 00 5 000000e 00 5 000000e 00 5 000000e 00 4 Figure 18 d15NB 378852e 02 508556e 02 387513e 02 229378e 02 286844e 02 610168e 02 850845e 02 785024e 02 500167e 02 293752e 02 089981e 02 854275e 02 560428e 02 208264e 02 857740e 02 430722e 02 043180e 02 715123e 02 313609e 02 918635e 02 504306e 02 163839e 02 667617e 02 500000000000 000000009000 d15NB_sd e00000e 00 000000e 00 e00000e 00 eeeeeee ee 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 eeeeeee ee 000000e 00 000000e 00 e00000e 00 e000000e 00 eeeeeee ee 000000e 00 000000e 00 000000e 00 000000e 00 wo diSN 463886e 02 9 9 550197e 02 435396e 02 9 310489e 02 9 43
22. 28 10006 00l Gas Pressure 44 80 Torr Disk Space 46 Setup Button Figure 23 Setup Button The analyzer displays the setup menu See Figure 24 Setup Menu Tabs Time Files Calibration Laser Adjust MIU DCS Local Time Zone Current local time zone America Los_Angeles America Los_Angeles y New Local Time Zone Set Time Zone Clock Current local time Thu Aug 28 13 31 35 2014 ntpd synchronizing time with the server NTP status NTP servers 0 ubuntu pool ntp org Set clock manually 1 ubuntu pool ntp org 1 la 1000 0 ai p 2 ubuntu pool ntp org 3 ubuntu pool ntp org NTP restart il Sa File Output 1440 Output Interval minutes Absolute Local American mm dd yyyy hh mm ss sss Time Stamp Format New files scheduled on Fri Aug 29 11 26 07 2014 Create New Files Undo changes Serial Output About 115200 Baud rate Build Date Aug 26 2014 NONE v Parity Version a74d2ea 1 v Stop bits IP Address 192 168 10 175 Serial Number LGR 14 0103 Indo Changes save Changes x Close Figure 24 Setup Menu with Time Files Tab Selected 28 Isotopic N20 Analyzer Run the Analyzer Time Files Tab The Time Files tab Figure 25 lets you adjust the timestamp format of the data files and the new file creation interval when running continuously Use the Time File menu to change how the data reported at the RS 232 port is configured Standard settings are provided for e Baud Rate e Parity e Stop Bits The actual rate
23. 34 c Click on Login Authentication Required pode 1 The server 192 168 100 1 80 requires a username and password The server says MWRIO2 User Name Password Figure 44 Authentication Dialog 50 Isotopic N20 Analyzer Wireless Router Setup 6 On the left side of the screen click on Wireless gt Basic Settings Figure 45 ZyXEL SF MVR 102 Setup Wizard S Basic Settings Select Basic Settings Sa Advanced Settings a Security a Access Control a Site Survey VPS Figure 45 ZyXEL Wireless gt Basic Settings Screen 7 Change the wireless mode from AP to Client then click Apply at the bottom of the page Figure 46 Wireless Basic Settings modify the wireless security settings and network paramete Disable Wireless Network Network Band 2 4 GHz B G N Wireless Mode Chane to that Figure 46 Wireless Basic Settings Changing Wireless Mode to Client 8 Anencryption warning displays Figure 47 This means the wireless router connection must be either in WPA or WPA2 mode but not both Click OK Warning WPA2 Mixed encryption is not supported in client Mode Change to WPA2 Encryption Figure 47 Encryption Warning Message Isotopic N2O Analyzer 51 Wireless Router Setup 9 Click on Wireless gt Site Survey The ZyXEL setup wizard displays Figure 48 MWR102 S Basic Settings E Advanced Settings Select Wireless Site Surevey Figu
24. 84 e Click on the DCS tab to access the DCS control screen e Use the DCS control panel to configure DCS Figure 84 shows and describes the DCS setup screen Enable Disable the DCS e When the DCS is disabled the control signal remains fixed so that the DCS has 100 sample gas flow and 0 zero air flow e When the DCS is enabled the analyzer uses a feedback system to adjust the flow to yield a 2 5 or 10 ppm sample user selected in the measurement cell e 2 5 or 10 ppm is the concentration in the cell after dilution not the inlet sample concentration of the DCS The data files contain a column with an approximate value for the inlet sample concentration calculated from the measured cell concentration and the internally commanded dilution ratio Time Files Calibration Laser Adjust MIU i DCS AAA DCS Tab Selected e Enable DCS Click the radio buttons to Disable DCS Enable or Disable the DCS Click Save or Undo when done x Close Figure 84 DCS Tab and Control Panel Isotopic N20 Analyzer 73 Batch Mode Operation Appendix E Batch Mode Operation Optional Your isotope analyzer can be factory equipped with a batch injection system Figure 85 This system allows you to introduce individual samples to the analyzer using syringe injection na Septum Port Back Panel a E 10 pm Filter gulai m p E Sample e i me a 0 015 S am Zero Air Inlet Filter m Os 10 pm Fil Sample Inlet Figure 85 Batch
25. 9568e 02 9 405092e 02 119322e 02 8 i wo 9 9 293411e 02 529413e 02 3896476e 02 8 662514e 02 oo 8 8 7 7 o 391584e 02 077092e 02 731019e 02 374373e 02 6 962397e 02 6 6 5 5 068491e 02 4 4 un 531943e 02 252542e 02 875474e 02 440235e 02 693402e 02 245409e 02 000000000000000000000090 diSN_sd 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000 00 000000e 00 000000e 00 000000e 00 e00000e 00 000000e 00 e00000e 00 Typical Standard Data File 1 8 9 1 w re 0 wW 0600000000 yy ya SP 700685e 01 328215e 00 576606e 00 622217e 01 313426e 00 412001e 01 428630e 01 598636e 01 606901e 01 945533e 01 549340e 01 253812e 01 666719e 01 544892e 01 667346e 01 366482e 01 224731e 01 251627e 01 762693e 01 568000e 01 716292e 01 408736e 01 444167e 01 5050000000000000000000000 SP_sd e200000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 000000e 00 e000000e 00 000000e 00 000000e 00 200000e 00 e00000e 00 p00000e 00 e00000e 00 000000e 00 000000e 00 000000e 00 e00000e 00 200000e 00 e00000e
26. BEAM exposure to direct or NEVER VIEW THROUGH OPTICAL APERTURE se attered radiation Class Ilib Laser 20 mW Maximum Output 2 Isotopic N20 Analyzer Table of Contents 1 System OVErvie Wii e 5 Standard Components ini 5 Optional Components usaran ninia ds 5 Isotopic N20 Analyzer Front and Back Panels cccsccscsssssccscscsccccscscsccccccscsccececscscescecscscesescececssess 6 POWer CONNECTIONS isis 7 Data Input Output 1 0 Ports ccssccsscsscssccsscssccecccsccscccscescsccesccssseccescesscesceseesccescessseccescsesesees 9 Plumping DAA aa 10 Gas Inlet Outlet CONNECtIONS ccccccscccccccscceccccsccecccceccsccececceccececcecceccececceccececceccscecceccecccceccecs 10 2 SVSleM SETUD srine raina AAA A O A A A A 12 Connect theAnalyzel suis 12 3 RUM the ANOVA A a A A TE E T 13 intialize the ANI Ze E a vacaeneie roieeeassehanoeetieee 13 Termal stap liZa OM io iaa 14 TRe AUTO LUN CASCO ios decora ds 15 AA scacercce settee tats E ance nana t cite a aig cee cde T Ge etal eae ee lee dt a i Ce ea rae ee alae 16 Malin Panels as 17 Verinen e C OnT OED Ternan oa 17 Maim Panel DISDIAY nresnain a a a e a a tne qosthesaecneantersnesebanes 18 N umene DISHI diria 18 Spectruni DIS A AA ia 19 THREE NAPE DISPO dara 20 A A e E T EE E EA E EEE A O ERA Cea ae 21 FIG TAN STOR Meni coi a a a aE eE 22 Sale ERS Datai Pie E EN E EE ENE E ANE E NEAT EE ENE ENE E ES EA EEEE E E 22 Transter Data FES a E a E rec rates ete E a 23 Archived F
27. CP server on that LAN This mode is primarily intended for connecting the analyzer to an existing LAN in situations where a wired connection to the LAN is not available for example on the roof of a facility or in an outbuilding Client Bridge Mode LGR Analyzer LAN Wireless Router DHCP Bridge Figure 42 Wireless Connection Diagram in AP for Client Bridge Mode Set Up the Client Bridge Mode Configuration 1 Connect the computer to the wireless router using a standard Ethernet cable wired connection 2 Manually set a static IP address for the computer by following the steps below for the appropriate operating system 48 Isotopic N20 Analyzer Wireless Router Setup Windows XP a Click on Start gt Control Panel set for Classic View gt Network Connections b Right click on Local Area Connections and click on Properties In Properties scroll down the list and highlight Internet Protocol TCP IP and click Properties c Select Use the Following IP Address d Type 192 168 100 10 e Click on the Subnet Mask box and it will fill in automatically with 255 255 255 0 f Click OK at the bottom then click on Close to close the Properties window Windows Vista and Windows 7 a Click on Start gt Control Panel gt Network and Internet gt Network Sharing Center b On the left side of Network and Sharing Center click on Manage Network Connections in Vista or Change Adapter Settings in Windows 7 c Right click on Loc
28. INT IMOCE cursa 47 Configure the Router TOR Client Bidee Mode noni 48 Set Up VNC Software on Android Devices cscscecsccscsccccccscsccccccscsceccccecscecescccscscescecscsceseececsces 54 Set up VNC Software on iOS Devices coi iv cnwesdesvenpesiausevasesusossbuesweadeanenss 58 Set Up VNC Software on Windows Devices ccccceccscscscsccccscsccccccscnceccccecscececcecscsceccecscscesescecnces 62 Appendix D Dilution Control System Optional ccsccccceccssccceccecccceccsccccecceccececcecsececcecs 69 Connect the DES 69 Optional Tee Connector 70 Optional External Throttle Vale A euendadaveaavede coeeaees 71 DGS Setup ana Operation siii sins 73 PEDES li es 73 Enable Bore O a ne a ee N 73 Appendix E Batch Mode Operation Optional ccccccccccescescccecssccccecceccccesceccececcecsececcess 74 Hardware Setup iii ai ia 75 Software SetuP nidad 76 Batch Mode Pro essihg iii iaa 78 Changing the Septum on the Syringe Injection Port cscscsssccscscecsccscsccccccscsceccccscsceccececscscescecs 79 Dy WANNAN A EAS AA AS AA 81 Warranty Detalls sinan cacy saw cccany cv eus casas swaaunas vice Tia 81 Warranty REUMIS iia narco ea 82 Contact informatio Mann aria 82 4 Isotopic N20 Analyzer System Overview 1 System Overview The Los Gatos Research LGR Isotopic N20 Analyzer measures N20 isotopes in parts per billion ppb Standard Components This section lists the components of the Isotopic N20 Analyzer Make sure
29. Mug oul SPRITE all PEPSI ay ELGATO wal ZyXEL 0335CB am i aring Center Figure 71 Windows Wireless Networks 4 Select the SSID network number listed on the router sticker in this case ZyXEL 0335CB Figure 69 through Figure 71 to display the Connect to a Network dialog 5 Inthe Security key field type in the wireless password Figure 72 6 Click OK TF Connect to a Network a x Type the network security key Security key e A aN You can also connect by pushing the l 43 Y button on the router Figure 72 Network Connections Security Screen Isotopic N2O Analyzer 63 Wireless Router Setup The Connection Status dialog displays Figure 73 Currently connected to ts ZyXEL 0335CB No Internet access Wireless Network Connection ZyXEL 0335CB Connected il e SmugMug will SPRITE at PEPSI al 1 ELGATO wt SmugMugs at The_RFID_Network a i JanMedical M y Open Network and Sharing Center Figure 73 Current Connectivity Screen 7 Check the connection to make sure the device is connected through the Wireless Router by selecting Router Figure 74 Currently connected to ZyXEL 0335CB No Internet access Wireless Network Connection PEPSI SSID ZyXEL 0335CB SmugMugs ZyXEL 032CDB The_RFID_Network Open Network and Sharing Center Figure 74 Wireless Network Connection Screen 64 Isotopic N20 Analyzer Wireless Router Setup 8 Check the IP address of the Window
30. N or an external data directory e Serial port For real time digital measurement output e Analog port Provides a DC voltage that is proportional to the measured N20 isotope concentration e VGA port Connects to an external monitor e 25 pin data port To connect to the Multiport Inlet Unit MIU optional Figure 5 shows the data interface connection ports SERIAL VIDEO Figure 5 Data Interface Ports Isotopic N2O Analyzer 9 System Overview Plumbing Diagram Figure 6 shows the plumbing diagram hternal Pump Exhaust To External Pump 10 um E Sample Inlet 1 2 um Filter E Opti Figure 6 N20 Isotope Analyzer Plumbing Diagram Back Panel Gas Inlet Outlet Connections Figure 7 shows the gas inlet and outlet ports of the analyzer These ports are plugged for protection during shipping In normal mode Internal Pump e The gas to be measured is connected to the Inlet Port 4 Swagelok e The Internal Pump Exhaust Port Swagelok is open e The outlet to the External Pump 3 8 Swagelok is capped with the provided plug e The acceptable inlet gas pressure range is O 10 psig In normal operation mode the internal pump draws a sample through the analyzer from the inlet and the pump is exhausted through a small 14 Swagelok port This exhaust port can either be connected to the provided muffler to expel the analyzer exhaust into the room air or the exhaust can be
31. al Area Connection and click on Properties d In this window highlight Internet Protocol Version 4 and click Properties e Select Use the Following IP Address and type in 192 168 100 10 f Click on the Subnet Mask box and it will fill in automatically with 255 255 255 0 g Click OK and then Close on the Properties window Macintosh Apple Computer a Click the Apple Icon in the top right corner b Select System Preferences c Click on Network then Ethernet d Click on the dropdown box next to Configure IPv4 and set it to Manually e For the IP Address enter 192 168 100 10 f Click on the Subnet Mask box and enter 255 255 255 0 g Click Apply 3 Open a browser and access the router interface by typing 192 168 100 1 in the address bar Changing Your Computer Back to DHCP After setting up the Router change your computer back to the way it was e In Windows change the setting to get an IP Address and a DNS Server Address Automatically e In Macintosh change the Configure IPv4 setting to Use DHCP Isotopic N2O Analyzer 49 Wireless Router Setup To set up the Wireless Router 1 Flip the switch on the side of the wireless router from Router Mode to AP Mode Figure 43 a Change switch Figure 43 Set Switch on AP 2 Opena browser window 3 Enter 192 168 100 1 Press Enter The Authentication Required dialog appears Figure 44 5 Login to the server a Inthe User Name field enter admin b Inthe Password field enter 12
32. alve An optional external throttle valve Figure 83 lets you adjust the flow into the analyzer between dynamic dilution and batch mode operation Use the throttle valve to restrict the e Total flow into the analyzer to less than 200 SCCM e Source gas to less than 180 SCCM for proper dynamic dilution control MN Setting the throttle valve to about turn open from off gives about 150 SCCM NOTE mM UL Figure 83 External Throttle Valve Set a higher flow rate when the analyzer is operating in batch mode where high flow yields faster batch measurement If the analyzer has both batch mode and dynamic dilution toggle the throttle valve between e Full open for batch mode e turn from off for dynamic dilution The flow rate can be measured at the inlet if needed Isotopic N20 Analyzer 71 Dilution Control System The provided BNC connection cable connects the analyzer to the DCS 200 so that NOTE the analyzer is able to maintain the proper diluted concentration If the sample to be measured will always remain below 2 5 or 10 ppm it is not A necessary to connect the zero air and the zero air port must be capped NOTE If the analyzer has not been configured for batch operation the valve is internal and pre set No adjustment is needed 72 Isotopic N20 Analyzer Dilution Control System DCS Setup and Operation The DCS Tab If your analyzer is equipped with a DCS you will see a DCS tab on the setup screen Figure
33. and if necessary in person Training and installation services are available anywhere in the world Please contact us for more details Isotopic N20 Analyzer 81 Warranty Warranty Returns If your product is defective you may return it during its designated warranty period for a prompt exchange or repair To return a product please contact one of our sales representatives at sales lgrinc com to request a Return Material Authorization RMA number Requests for refunds and exchanges cannot be processed without a valid RMA number Please have the following information available when requesting an RMA number e Part Number e Serial Number Located on the back panel of the analyzer e Description of the Problem The company issued RMA number must be prominently displayed on the return package No returns will be accepted collect or C O D On all warranty returns LGR will pay the shipping charges on the return of the merchandise to the customer Contact Information For questions regarding the operation of this analyzer please contact Los Gatos Research 67 East Evelyn Avenue Suite 3 Mountain View CA 94041 Phone 650 965 7772 Fax 650 965 7074 Sales sales Igrinc com Technical Support support Ilgrinc com 82 Isotopic N20 Analyzer Index A Accessing Data Using an Ethernet Connection occcccccoccnnncnononnncnanenoos 44 Analyzer Flow Schematic cccccoocccncccoccnnnonanonnnonanonononanonnos 43 Andr
34. anel see Figure 3 AC Voltage Selection Switch 6002000005600 la ALELLA Figure 3 AC Power Entry Module Figure 4 shows the external pump power outlet SERIAL VIDEO AC Voltage Selection Switch Figure 4 External Pump Power Port Isotopic N20 Analyzer 7 System Overview Table 1 Power Connections and AC Voltage Selection Switch Description Connector Description AC Power In Connects the analyzer to power supply AC Voltage Selection Toggles the input voltage to the analyzer s power supply between 115 VAC and 230 VAC determined by the country where the analyzer is used Setting an incorrect voltage may damage the analyzer When changing the supply voltage verify that both the Analyzer is powered off or not connected to power AC voltage selection on the analyzer matches the AC voltage being supplied from your power supply EXT Pump Power Provides power to an external pump when operating the analyzer MN If you require a different power source please contact LGR NOTE 8 Isotopic N20 Analyzer System Overview Data Input Output I O Ports The analyzer s interface connection ports are on the back panel These connection include e USB port For transferring data to USB memory devices You can also transfer data files from the hard drive by using the built in File Transfer Program e Ethernet port To connect to a local area network LA
35. avity 2 3 Flushes the cavity with zero air twice before requesting the sample 4 Prompts you to inject sample of gt 60 ml gas into the syringe port You have 120 seconds inject the sample A If you take longer than 120 seconds to complete the injection the Failed Injection message displays and instructs you to restart the injection process NOTE Figure 91 shows the Batch Injection Measurement screen displays as a flow diagram to show the batch measurement procedure Pumping out ICOS cavity Flushing w zero air Abort Figure 91 78 Inject gt 60 mi of sample gas within 120 seconds then click OK If the time expires you will need to reflush the system Batch Injection Flow Isotopic N20 Analyzer Batch Mode Operation Changing the Septum on the Syringe Injection Port The septum on the syringe injection port require periodic replacement Depending on use a septum should last a minimum of 100 injections To replace the septum 1 Make sure the analyzer is in slow mode Figure 89 Remove the septum nut from the injection port as shown in Figure 92 Figure 92 Syringe Port with Septum Nut Removed Remove the septum from the septum nut using the provided septum puller 3 Remove the new septum from the package 4 Use a needle to center the septum by inserting the needle through the septum nut and septum to Figure 93 Make sure the septum is installed so that the Teflon side white i
36. ay be expressed ly p SLyP y a Where e isthe transmitted intensity through the sample at frequency v e J is the reference laser intensity prior to entering the cell e Sis the absorption line strength of the probed transition e Lis the optical path length of the laser beam through the sample e xis the mole fraction e Pis the gas pressure e Py isthe line shape function of the transition at frequency uy In this case f dwdv 1 If the laser line width is much narrower than the width of the absorption feature high resolution absorption spectra may be recorded by tuning the laser wavelength over the probed feature _ Tunable amp A 345 DIME Laser x gt f Reference i Photodiode Data Acquisition System Figure 35 Typical Laser Absorption Spectroscopy Setup 40 Isotopic N20 Analyzer About Analyzers and Laser Absorption Spectroscopy Integration of the measured spectra with the measured values of e Gas temperature e Gas pressure e Path length e Line strength of the probed transition Lets you determine the mole fraction directly from the relation Ape K SLP NLT 1 Use this equation to determine gas concentrations even in hostile environments without using calibration gases or reference standards These values are measured e Mixtures containing several species e Flows at elevated temperatures and pressures LGR s Off Axis Integrated Cavity Output Spectroscopy Off Axis ICOS Off A
37. butor or direct customer of LGR or a distributor s customer packs and ships or delivers the analyzer to LGR at LGR s main office in Mountain View CA within 30 days after LGR has received written notice of the defect Unless other arrangements have been made in writing transportation to LGR is at customer expense 5 No charge repair parts may be sent at LGR s sole discretion to the purchaser for installation by purchaser 6 LGR s liability is limited to repair or replace any part of the analyzer without charge if LGR s examination discloses that part to have been defective in material or workmanship The laws of some locations may not allow the exclusion or limitation on implied warranties or on incidental or consequential damages so the limitations herein may not apply directly This warranty gives you specific legal rights and you may already have other rights which vary from location to location All warranties that apply whether included by this contract or by law are limited to the time period of this warranty which is a twelve month period commencing from the analyzer customer ship date or eighteen months from the date of shipment to an LGR authorized distributor whichever is earlier Further information concerning this warranty may be obtained by writing or telephoning the Warranty Manager at LGR Customer Service LGR provides direct assistance in the use and application of all of its analyzers through email telephone
38. ed on the time chart Longer averaging periods or equivalently slower data acquisition rates will yield better measurement precision than shorter averaging periods Figure 17 shows the Data Rate Control Adjustment Screen Transmitted Intensity 0 2 0 25 0 3 Volts gt amp 0 4 0 45 0 5 Rate Control Adjustment Panel 0 6 Absorption o h 9 e 0 Frequency GHz N20 334 18 PPB d15NA 17 08 o d15NB 7 50 o d180 70 16 H20 208 09 PPM SP 9 58 o Figure 17 Data Rate Control Adjustment Screen Isotopic N20 Analyzer 21 Run the Analyzer File Transfer Menu Click on the Files button in the User Interface Control Bar Figure 13 to access the File Transfer menu Use the File Transfer menu to access data collected by the analyzer e Each time the analyzer is re started the most recent file name is displayed in the form of N20iso_ 2015 06 12 f0001 txt where the e The serial number counts upward to provide up to 10 000 unique file names each day First 6 characters represent the analyzer model N20iso Next 10 characters represent the date yyyy mm dd Last four numbers are a serial number e Ifthe analyzer is left in continuous operation a new data file will automatically be created every 24 hours to keep data file sizes manageable Standard Data File 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 2014 12 18 20
39. ee Figure 39 i gt s P A a R oulei Figure 39 Switch on Wireless Router Set to AP Mode Figure 40 shows a router in AP mode that connects wired and wireless devices to the analyzer In this mode the e Wireless router is connected to an existing local area network LAN using a standard Ethernet jack e Analyzer and wireless client devices are issued IP addresses by the DHCP server on that LAN This mode is primarily intended for connecting wired and wireless devices to the analyzer on an existing network such as in a laboratory or other large facility environment Access Point Mode Tablet with Wireless Laptop with z Wired or Wireless LGR Analyzer Wall Jack LAN Router Access Point LAN connection DHCP Figure 40 Wireless Connection Diagram in AP Mode To connect wired and wireless devices to the analyzer you must install VNC virtual network client software on the device Isotopic N20 Analyzer 47 Wireless Router Setup Configure the Router for Client Bridge Mode To configure the wireless router for Client Bridge mode slide the mode switch to the AP position Figure 41 N 4 AP Route Figure 41 Switch On Wireless Router Set to AP for Client Bridge Mode Figure 42 shows a router in Client Bridge mode In Client Bridge Mode the e Wireless router is connected to an existing local area network LAN via a wireless link e Analyzer and wireless devices are issued IP addresses via the DH
40. entration to over range for up to 2 minutes while the DCS adjusts the concentration to target When transitioning from a large concentration to a lower concentration of gasses be aware that there may be a memory effect resulting from residual source gas in the analyzer Make sure that the residual source gas from the previous sample has had time to exit the system Residual gas can also be removed by switching inlet lines using short line lengths and flushing lines with zero air Connect the DCS This section describes The DCS hardware and how to connect it The numbers in this list correspond to the numbers in Figure 79 1 2 3 4 Control Cable Sample line Zero air line connects to house air supply Line to sample supply SAMPLE OUTPUTTO ZERO AIR 15 50 PSIG ANALYZER INLET 15 50 PSIG 4 20 Os To Sample Supply Ome PR POR E RIO he Be wd no eben iter eeu De Ok kn RO RK RAS ed INI FT FXHALIST EE ER lt gt 5 gt Y e i e e y Clare ZERO AIR x INLET O O Do o o 1 O O e SAMPLE INERNAL PUMP JOBU PUMP USR FTHFRNFT 2 HERA 0 e Ta SERIAL VIDEC Gee me TO MIU LEN ENAA a N Y IS ISATUSE CXT PUMP POWER fl 4 n N A fa SK AR N 7 SO 9 gt o o JS 9 Saal N Sy AN o i K de Y AS SIN d N f Z r4 Ny 74 ur L ag P A A cE x 2 i Figure 79 DCS Connection Diagram Isotopic N20 Ana
41. evice into a USB port 2 Click on the Mount USB button Figure 19 3 Transfer data files from the analyzer hard disk to a USB storage device by dragging and dropping the files from hard disk pane to the USB device pane The directory windows defaults to the local drive on the left screen and the USB memory device on the right 4 Navigate through folders create directories and delete files and directories or use the left mouse button to highlight one or multiple files in the windows and drag and drop to copy the files between the directories When you have finished transferring files 5 Click the Unmount USB button Wait for the Safe to Remove USB Memory Device message before removing the USB memory device Isotopic N20 Analyzer 23 Run the Analyzer 6 Click Close to exit the Daily Directory and Archive of Data Files screen N Removing the USB memory device before seeing the Safe to Remove pop up message may result in loss of data NOTE Local Hard Drive USB Flash Drive home lgr data a media a Name Size Date Modified Name size Date Modified 01May2014 3 May 2014 12 08 41 02May2014 3 May 2014 08 49 42 03May2014 3 May 2014 23 43 29 04May2014 4 May 2014 17 09 24 06May2014 7 May 2014 18 36 11 07May2014 8 May 2014 08 48 00 08May2014 9 May 2014 13 27 12 09May2014 9 May 2014 16 13 37 EJ 10May2014 10 May 2014 15 44 13May2014 13 May 2014 17 18 15May2014 15 May 2014 11 23 arch
42. ive 15 May 2014 11 23 Mount and Unmount USB Buttons Mount USB UnmountUSB There is no drive mounted x Close Figure 19 Typical Daily Directory and Archive of Data Files 24 Isotopic N20 Analyzer Run the Analyzer Archived Files The internal drive directory Figure 20 left pane contains archive and daily directories The archive directory contains compressed files that the analyzer generates daily Figure 21 Each file is a single zip archive that contains all the data files recorded on a given day named using the following convention ddMMYYYY zip A new directory is created every day that the analyzer operates Local Hard Drive USB Flash Drive home gr data archive A media a Name Size Date Modified Name Size Date Modified _ 110ct2014 zip 130 KB 11 Oct 2014 13 11 16 140ct2014 zip 1 9 MB 14 Oct 2014 17 10 14 150ct2014 zip 1 2 MB 15 Oct 2014 12 43 51 160ct2014 zip 5 5 MB 17 Oct 2014 09 10 33 _ 170ct2014 zip 7 4 MB 18 Oct 2014 11 32 48 _ 180ct2014 zip 362 KB 18 Oct 2014 14 02 50 Mount USB nmountUSB There is no drive mounted x Close Figure 20 Archive Directory To access a txt file click on the date in the archive directory The analyzer displays the files for that date Isotopic N20 Analyzer 25 Run the Analyzer Daily Directories Examples of files in each daily directory is shown in Figure 21 Local Hard Drive home lgr data 2014 08 20 26 N20iso_2014 08
43. les aia as 25 DAM DIE cone sa ee 26 Setup Panel scooters 28 TIME les Tara osas 29 laser AdJUSt Tara 33 Manifold Menu for Multi Port Inlet Unit Tab Optional ccccoooccnncnnnnccnnnnnnanononononaconononanonononnnacnnnnonanionoss 35 DEST a Doa a a a a a i a a a a a a a a aa a a 36 Shut Down the Isotopic N20 Analyzer cscsccscscecsccccscnccccccscsccccecscsceccccscsceccccccscscescccscscesescecces 37 4 AVIGINECN ONCE vastecdsaccisivsucecsacescccces sues oeecnsecseasevesceasonsecitavevasecsdeaesieespasscacduesseesscedeeesoscdscestues 39 Daily Operation Checklist aaids 39 Mirror Ring Down Time and Maintenance ccccscscscscscscsccccccccccccccecccecscscscscncscscecscscecesescseeees 39 Appendix A About Gas Analyzers and Laser Absorption Spectroscopy ceccccscereccecscecees 40 Conventional Laser Absorption SPectroscOpy sccscsccccscscsccccccscsccccccscsceccecscsceccecscscececcecscscescess 40 LGR s Off Axis Integrated Cavity Output Spectroscopy Off Axis ICOS csccscsssscscsscsccccsceccsceees 41 Appendix B Accessing Data Using an Ethernet Connection csccccececcccsceccccccsceccccecscececs 43 Additional NOTES iia AAA AAA AAA AAA AAA 44 Appendix C Wireless Router Setup Optional c ccccceccsccccessscccceccscccceccsccccesceccececceceecess 45 RoOUter Modest ceda 45 Isotopic N2O Analyzer 3 Contigure the Router tor Wireless ROUTER IV Od 6 a a 46 Contigure the Router for Access PO
44. lyzer 31 Run the Analyzer Calibration Procedure 1 Connect reference gas supply to inlet on back of analyzer 2 Fromthe Setup menu click on the Calibration tab See Figure 27 3 In Reference Gas Settings select the checkbox next to the gasses you wish to calibrate 4 Enter the known concentration for the local gas standard MN N20 isotopes must be calibrated all at the same time Check each N20 boxes as NOTE shown in Figure 27 H20 may be calibrated separately Time Files Calibration Laser Adjust MIU DCS os y Reference Gas Settings l Calibrate concentrations e Calibrate dels 0 6 Calibrate X Total N20 ppm 0 31260 Last cal Thu Aug 28 13 05 57 2014 Check the calibrate box Calibrate eee next to the gas you want 5 N Mo 16 005 to calibrate Last cal Thu Aug 28 13 05 57 2014 0 4 a K a E Calibrate Xx s 26 S N o 0 00 rE Last cal Thu Aug 28 13 05 57 2014 Most recent calibration E y Calibrate X 0 2 O 50 o 45 00 Vo Last cal Thu Aug 28 13 05 57 2014 V s Calibrate J i i TER Calibration complete wt AAN When the start button is E A E ci je Start active click on it to start 5 0 5 calibration Xx Close Figure 27 Calibration Setup Screen 5 Open the reference gas valve 6 Click the Next button to begin the calibration The time of latest calibration is stored in the analyzer configuration files for MN future reference Leave the local standard gas connected for a sh
45. lyzer 69 Dilution Control System Figure 80 shows the DCS 200 front panel DCS 200 Figure 80 DCS Front Panel Figure 81 shows the DCS back panel The N20 sample and the zero air N20 free flow in through the gas inlets and are mixed in the DCS Both the sample and the zero air must e Be pressurized to between 15 and 50 PSIG e Have a sample gas flow capability of 200 SCCM e Have azero air flow capability of 2 2 SLPM r ae par CONTROL T et _A gt MPIA mq SAMPLE PL OUTPUT TO ZEROAIR 15 50 PSIG ANALYZER INLET 15 50 PSIG Figure 81 DCS Back Panel Optional Tee Connector The diluted gas flows into analyzer through a tee connector provided with the DCS 200 that allows for steady flow past the inlet to the analyzer Figure 82 SAMPLE INLET 0 10 PSIG To DCS Output Open Figure 82 Inlet Tee Configuration for the DCS A If you do not use the inlet tee and connect the gasses directly to the analyzer the mass flow controllers will not maintain proper dilution Warning 70 Isotopic N20 Analyzer Dilution Control System Depending on the sample concentration the mass flow controllers adjust the amount of dilution e Sample flow can vary from O to 200 SCCM e Zero air flow can vary from 0 to 2 2 SLPM Flow through the measurement cell should remain steady at approximately 180 SCCM or less with the excess flow vented out the inlet tee Optional External Throttle V
46. n this case the Windows device IP address is 192 168 100 101 Figure 78 11 Install VNC software connect with VNC software by going to the RealVNC Web site and downloading the RealVNC Viewer EXE file from http www realvnc com download Complete instructions for installing Real VNC Viewer for Windows can be found online at http www realvnc com products vnc documentation 5 0 guides user Chapter1 html NOTE Isotopic N20 Analyzer 67 68 Wireless Router Setup 12 Open the program by clicking on the Connect button Figure 78 o Ve VNC Viewer VNC Server Encryption Let VNC Server choose About Figure 78 Real VNC Viewer Installation Screen 13 Enter the IP address of the analyzer 192 168 100 100 or 192 168 100 101 In the example in Step 10 the IP address of the Windows device is 192 168 100 101 therefore the IP address of the analyzer is 192 168 100 100 and therefore 192 168 100 100 mu Isotopic N20 Analyzer Dilution Control System Appendix D Dilution Control System Optional This section describes the Dilution Control System DCS and explains how to set up and operate the DCS Automatically dilutes the sample stream with zero air whenever the concentration rises above target 2 5 or 10 ppm and maintains the target concentration at that level Has a response time constant of approximately 2 minutes so a sudden rise in concentration will cause the conc
47. nalyzer will not obtain a DHCP address upon booting up and will shut down its Ethernet interface You might be able to access the shared analyzer data directory from computers running operating systems other than Windows The analyzer uses a Samba server to share the data directory which might be accessed by any appropriate Samba client application 44 Isotopic N20 Analyzer Wireless Router Setup Appendix C Wireless Router Setup Optional The LGR Analyzer can be ordered with an optional ZyXEL portable wireless router If you ordered the wireless router option it is factory installed on the back of the analyzer Appendix C explains how to configure the wireless router to connect other devices to the analyzer Router Modes There are three ways or modes to set up the wireless router e Wireless Router Mode This is the default mode of the wireless router Use this mode to connect devices wirelessly to the analyzer The router issues IP addresses for the analyzer and the wireless devices Figure 38 e Access Point Mode Use this mode to connect the analyzer to an existing network over a LAN connection This mode does not issue IP addresses but allows wired and wireless devices on an existing network to access the analyzer via a LAN connection Figure 40 e Client Bridge Mode Use this mode to connect the analyzer wirelessly to an existing network This mode does not issue IP addresses but allows wired or wireless devices on an
48. nique SSID number and wireless password NOTE 5 Click Connect Figure 53 Signal strength Excellent Security WPA WPA2 PSK 1 Enter the password from the sticker on the router Cancel Connect 2 Click on Connect Figure 53 Password Connection Screen 6 Averification message appears showing that the Android device is connected to the router Figure 54 Wi Fi ZyXEL 0335CB Connected Figure 54 Connectivity Confirmation Screen 7 Ensure that the IP address of the Android device is correct by holding your finger down on the network connection icon The IP address of the Android device is either 192 168 100 100 or 192 168 100 101 MN Remember the IP Address of the Android device because it will be necessary to refer to it in Step 11 NOTE Isotopic N20 Analyzer 55 Wireless Router Setup 8 Install VNC software connect with VNC software by searching and installing from the store in the Google Play store search for Android vnc viewer and install the application by tapping on the Install button Figure 55 Internet connection is required for this step Complete instructions for installing the Android vnc viewer can be found online at http code google com p android vnc viewer wiki Documentation h Apps SiC gt android vnc viewer ANDROIDVNC TEAM Install Click Install Pan Follows Mouse Send Special Keys Mouse follow pan ce 5 Ego z MORSA DEFAULT
49. of serial output is equal to the Logged File Rate i e 1 Hz divided by the Rate specified in the Time Files menu A Use a null modem serial cable to connect the serial port of the analyzer to an external computer NOTE The available timestamp formats are shown below in Table 3 Table 3 Available Time Stamp Formats Time Stamp Format Absolute Local American mm dd yyy hh mm ss sss Absolute Local European dd mm yyyy hh mm ss sss Absolute GMT American mm dd yyy hh mm ss sss Absolute GMT European dd mm yyyy hh mm ss sss Relative Seconds After Power On SSSSSS SSS Relative Seconds in Hours Minutes hh mm ss sss Seconds Isotopic N20 Analyzer 29 Run the Analyzer Clock Set Panel The Clock Set panel lets you adjust the current time and date settings of the analyzer Figure 25 The time zone and daylight savings enable disable may also be set here Time Files tab slected 1 Jan 2000 00 00 00 ew Local Time Set clock manually Time stamp format Serial output configuration menu Figure 25 Time File Settings Menu Functions 30 Isotopic N20 Analyzer Run the Analyzer Calibration Tab Los Gatos Research recommends periodic referencing rather than calibration to ensure measurement accuracy and consistency When calibration is necessary follow this procedure Figure 26 shows the calibration process as a flow chart Figure 26 Calibration Flow Isotopic N20 Ana
50. oid Wireless Devices SENE Up TOF USC trocear UNA 55 C CallbratoniMeO licita 31 Configuration for Access Point Mode sccccccssssscssssssseresssvessenssss 48 for Client Bridge Mode cccccoocccnccnoccnnncnonccnncnnaronnnnnanos 49 for Wireless Router Mode oocccccccoccnnncnocccnncnnnccnononanos 47 Contact timor rmat ON an a ENA TNN 76 Control Panel for Dynamic Dilution SySteM oooccccccnoccnnnnonanonnnonanos 73 Conventional Laser Absorption Spectroscopy ccccoooccccn 40 D Dilution Control System Optional oooomommmmm oo 70 Display NUM eE ita sete 18 O 19 TMechart aaa 20 E Isotropic N20Analyzer Starine UD earen a a ass 13 L Laser Adjust Meli A RE 33 M Mali Panel rennen TEE accesses E 17 18 Maintenance RECUO rta ies 39 Manifold Menu for Optional Multiport Inlet Unit 35 Isotopic N20 Analyzer Index N N20 CO Analyzer Routine MainteNnance ccccccseccseccseceseceseeeneeeeeeeeenees 16 NUMERIC DIS OLAV iS 18 O Off Axis Integrated Cavity Output Spectoscopy Off Axis A a A 41 OPE a a E A E A 13 Main Pane bisama 17 18 R REUS ao 76 S So a a aesandet eosaccauasemeees 28 Calibration Men seke e ANA 31 laser Adqjust Menta ia 33 Manifold Menu for Optional Multiport Inlet Unit 35 TIME Men nar da 29 SRUTUAS DOWN 37 Spectrum Display cata 19 Star NE UD EN A 13 T Throttle Valve for Dynamic Dilution SysteM ccccccocccnnccnncnnnncnonnnoss 72 TMe MNU rr N R
51. onfig to connect the device to the analyzer Tasks Configure gt Figure 67 Setup Configurations Screen 12 Tap the IP Config you set up to connect the OS device to the Analyzer The analyzer software interface display will display on the device Figure 68 the screen size is adjustable to fit the screen of the device Transmitted Intensity Po a t 1 5 2 1 5 F 1 E 0 600 0 Absorptiun as NA oa IN t En 3 7 3 E E z 802 4 H i i 213 f i ee 03 O e E 4 A o 3 E Frequency bi Figure 68 Analyzer Software Interface Screen Size Adjustment for OS Devices Isotopic N20 Analyzer 61 Wireless Router Setup Set Up VNC Software on Windows Devices 1 On your Windows device open wireless router options 2 Locate the sticker on the router as pictured below Figure 69 ZyXEL Communications Corporation Model Name MWR102 IP Address 192 168 100 1 1e PM y aa e m admini 2 AA SSID Network Taki EL 033 ZvXEL 0335CB PN E Wireless Password oe BO8CDB18 Figure 69 Wireless Router Sticker 3 Click on the Wireless Network Connections icon in the bottom left part of the screen Figure 70 to open the Windows Wireless Networks dialog Figure 71 Click on the Wireless Network Connections Figure 70 Wireless Connections Icon 62 Isotopic N20 Analyzer Wireless Router Setup Not connected Fiill Connections are available Wireless Network Connection aj Smug
52. ort time to verify a successful NOTE calibration Click OK The analyzer resumes normal measurement mode Verify that the displayed concentration correctly corresponds to the standard gas 7 When calibration is complete click the CLOSE button 32 Isotopic N20 Analyzer Run the Analyzer Note on Mirror Ring Down Time The measurement cell mirrors are protected from contamination by an internal inlet filter but over time and with continued use the mirrors may gradually decline in reflectivity This will not create significant error in the mixing ratio measurement because the mirror reflectivity is continually monitored and the measurement is compensated using the mirror ring down time However if a significant change occurs in the mirror ring down time for example greater than 20 reduction in ring down time the precision of the isotopic measurements may be reduced Users should occasionally take note of the ring down time and request analyzer service mirror cleaning kit from LGR if a significant reduction in ring down time occurs Laser Adjust Tab Use the Laser Adjust tab to manually adjust the laser s wavelength to compensate any cumulative drift Figure 28 Laser adjustment may be needed for the following reasons e The laser s wavelength has drifted beyond the target range of the analyzer e The analyzer is operated outside the recommended temperature range e The spectrum display shows offset between absorption peaks
53. p www mochasoft dk iphone_vnc_help2 help htm search OL mocha vnc ie D BE Ba a O O A CA O A AAA E AAA IATA ANS E PASO A AE er AAA Price Deric Head Fora Pad Appa i1 Jof3 See Als Figure 64 VNC Selection Screen Mocha VNC Lite is Selected in this Example 7 Open the application and click on Configure Figure 65 Mocha VNC Lite Configure Tasks ar Configure Wake Up gt Click on Configure Figure 65 Mocha VNC Lite Configure new Screen 8 The configure screen prompts you for the server IP address and your password Figure 66 Mocha VNC Lite Ca Configure ES Tasks VNC Server Conner y m pesado ied Enter the IP address of Config gt the analyzer ee yz Wake Up gt ES Delete and Move gt maa OSE Eon sion E OFF OEE ae eee s VNC password KA Enter Igrvnc in the o VNC Password field Figure 66 Mocha VNC Lite Configure Screen 60 Isotopic N20 Analyzer Wireless Router Setup 9 Enter the analyzer s address in the VNC server address field 192 168 100 100 or 192 168 100 101 from Step 6 The IP address of the analyzer is whichever address the device is not For example if the IP address of the device that was displayed in Step 6 is 192 168 100 101 then the IP address of the analyzer will be 192 168 100 100 10 In the VNC Password field type Igrvnc 11 Tap Connect The Setup Configuration screen displays Figure 67 Mocha VNC Lite Connect to 192 168 100 100 Click on IP C
54. re 48 Wireless gt Site Survey Screen 10 Click on Site Survey to bring up a list of local wireless networks Figure 49 11 Select the bubble to the right of your network 12 Click Next at the bottom of the page Wireless Site Survey This page provides tool to scan the wireless network If any Access Point or IBSS is found you could choose to connect it manually when cient mode is enabled Figure 49 List of Local Wireless Networks 5 N Isotopic N20 Analyzer Wireless Router Setup The Wireless Site Survey dialog appears Figure 50 13 Input the security settings of your wireless router Wireless Site Survey This page provides tool to scan the wireless network If any Access Point or 1833 is found you could choose to connect it manually when chent mode is enabled Encryption VWWPA Z WPA2 Cipher Suite E TP Y AES Pre Shared Key Format Passphrase Connect Figure 50 Wireless Site Survey Security Settings Screen 14 Click Connect The Connect successfully message appears Figure 51 Connect successfully ok Figure 51 Connected Successfully Message Screen Isotopic N2O Analyzer 53 Wireless Router Setup Complete the Setup 1 Close your browser window and change your computer back to DNS 2 Connectthe analyzer to the LAN port of the ZyXEL router The router connects to your main wireless router through the bridge you created To connect your wired and wireless devices to control
55. routed to an appropriate ventilation system via tubing For high flow mode operation optional the external pump port must be connected to a high flow dry pump INTERMAL PLAIP TO EXT PUMP INLET EXHALIST 1 4 1 4 3 8 Figure 7 Gas Inlet and Outlet Connections 10 Isotopic N20 Analyzer System Overview Swagelok connections should be tightened to to turn past finger tight leaving a gap of gt 3 5 mm as shown in Figure 8 Use a 9 16 wrench for fittings and an 11 16 wrench for 3 8 fittings Figure 8 Swagelok Connection Gap Table 2 Recommended Wrench Size for Swagelok Fittings Swagelok Fitting Size Recommended Wrench Size 1 4 9 16 3 8 11 16 Isotopic N20 Analyzer 11 Run the Analyzer 2 System Setup Connect the Analyzer Install the Isotopic N20 Analyzer 1 Connect to the main power by connecting to the fused power entry module on the back panel See Figure 3 2 Connect the gas inlet outlet connections in normal mode see Figure 7 e Connect the gas to be measured to the inlet port e Verify that the e Internal pump exhaust port Swagelok is open e Outlet to the optional external pump is capped with the provided plug 3 Connect the data interface cables Figure 5 12 Isotopic N20 Analyzer Run the Analyzer 3 Run the Analyzer This section describes the Isotopic N20 Analyzer screens and explains how to use them Initialize the Analyzer
56. s facing out i e will contact the injection port surface as shown in Figure 93 Teflon coated Side Septum On Needle Correct Positioning of the Septum in the septum nut Figure 93 Septum Needle and Septum Nut 5 Push the septum down the needle into the septum nut Isotopic N2O Analyzer 79 Batch Mode Operation 6 Re install the entire assembly on the syringe port 7 Hand tighten the septum nut firmly Figure 94 Needle r H Front Panel of Analyzer Figure 1 Septa Nut Figure 94 Install the Septum Nut 8 Remove the needle 80 Isotopic N20 Analyzer Warranty 5 Warranty Warranty Details Each Los Gatos Research Inc LGR analyzer is warranted by LGR to be free from defects in material and workmanship however LGR s sole obligation under this warranty shall be to repair or replace any part of the analyzer which LGR s examination discloses to have been defective in material or workmanship without charge and only under the following conditions which are 1 The defects are called to the attention of LGR in writing within one year after the shipping date of the analyzer 2 The analyzer has not been maintained repaired or altered by anyone was not approved by LGR 3 The analyzer was used in the normal proper and ordinary manner and has not been abused altered misused neglected involved in an accident or damaged by an act of God or other casualty 4 The purchaser whether it is a distri
57. s device a Right click on the ZyXEL 0335CB network connection b Click on Status Figure 75 Isotopic N20 Analyzer Currently connected to ZyXEL 0335CB No Internet access Wireless Network Connection ZyXEL 033508B Connected dl Figure 75 Current Connectivity Screen 65 Wireless Router Setup The Wireless Network Connection Status dialog displays Figure 76 ull Wireless Network Connection Status Figure 76 Wireless Network Connection Status Window 66 Isotopic N20 Analyzer Wireless Router Setup 9 Click on the Details button to display the Network Connection Details window Figure 77 x Network Connection Details Connection specific DN Realtek Description Physical Address DHCP Enabled IPy4 Address IPv4 Subnet Mask Lease Obtained Lease Expires IPy4 Default Gateway IPv4 DHCP Server IPv4 DNS Server Atheros AR9285 Wireless Network Adapt 90 00 4E DA 07 9C Yes 255 255 255 0 Wednesday August 29 2012 6 43 38 Ph Saturday September 08 2012 6 43 42 Pl 192 168 100 1 192 168 100 1 192 168 100 1 Check the IP Address of the Windows device which in this case is 192 168 100 101 IPv4 WINS Server NetBIOS over Tcpip En Yes Link4tocal IPv6 Address fe80 9c 7b 2cd 5d56 878c 12 IPv6 Default Gateway IPv6 DNS Server Figure 77 Network Connection Details Window 10 Check the Ipv4 Address of the Windows device which should be either 192 168 100 100 or 192 168 100 101 i
58. ted intensity in the upper display panel of the spectrum screen Any decrease in transmitted intensity could be indicative of dirty mirrors e Log the analyzer pressure Any decrease in pressure could be indicative of an obstruction in the flow system Mirror Ring Down Time and Maintenance The measurement cell mirrors are protected from contamination by an internal inlet filter but over time and with continued use the mirrors may gradually decline in reflectivity This will not create significant error in the mixing ratio measurement because the mirror reflectivity is continually monitored and the measurement is compensated using the mirror ring down time However if a significant change occurs in the mirror ring down time for example greater than 20 reduction in ring down time the precision of the isotopic measurements may be reduced Users should occasionally take note of the ring down time and request analyzer service mirror cleaning kit from LGR if a significant reduction in ring down time occurs Isotopic N20 Analyzer 39 About Analyzers and Laser Absorption Spectroscopy Appendix A About Gas Analyzers and Laser Absorption Spectroscopy Conventional Laser Absorption Spectroscopy For gas measurements based on conventional laser absorption spectroscopy Figure 35 a laser beam is directed through a sample and the mixing ratio or mole fraction of a gas is determined from the measured absorption using Beer s Law which m
59. the analyzer install VNC virtual network client software on the device Set up Devices for Remote Access Using VNC Software Optional Three types of devices that can be connected to the analyzer through the Wireless Router to access information e Android OS based devices smart phones tablet etc e iOS based devices smart phones tablets laptops etc e Windows based devices smart phones tablets laptops etc Each of these devices uses VNC Virtual Network Client software to connect the analyzer through the router Follow the instructions below to install and setup VNC software on the type of device you are connecting to the analyzer through the router Set Up VNC Software on Android Devices 1 Onthe Android device go to Settings gt WiFi gt Connect to Wireless Network Connect to the wireless SSID network Enter the ZyXEL wireless router in this case ZyXEL 0335CB as shown in Figure 52 For ultraportable analyzers the ZyXEL wireless router is inside the analyzer and may be accessed by opening the case ZyXEL Communications Corporation del Name MWR102 po 192 168 100 1 Username PWD admin 1234 x A Wireless SSID ZyXEL 033 ei Wireless Password BO8CDB18 na FCC ID ZVY FWisen MAC ce Fei Figure 52 Wireless Router Sticker 54 Isotopic N20 Analyzer Wireless Router Setup 3 Select SSID 4 Enter the wireless password from the sticker on the router Figure 52 MN Every router has a different u
60. to Launch and Maintenance settings are available when you click the Service button from the Launch Service screen From this interface you can e Change the auto launch delay timing e Transfer files from the internal hard drive to an external storage device connected via USB by clicking Files e Restore the analyzer s factory settings by clicking Restore Figure 11 shows the auto launch window Auto Launch Change to set custom e N20 Isotope Analyzer Auto Launch delay A 120 Auto launch delay sec Click Files to transfer Maintenance files toa USB drive l Files Transfer your data to a USB drive Click to restore the analyzer s factory Close settings Click to close this screen Restore Restore factory settings Click SERVICE to delay auto launch Figure 11 Auto Launch Screen Isotopic N20 Analyzer 15 Run the Analyzer File System Integrity Check Once a month the analyzer automatically performs a file system integrity check following initialization after startup Figure 12 shows the screen you see while the integrity check runs The integrity check runs for one to two minutes before launching the analyzer s control software MN Do not turn off the computer while the integrity check is running WARNING Your disk drives are being checked for errors This may take some time Checking disk 1 of 1 8 complete Press C to cancel all checks currently in progress Figure 12
61. ug 2014 17 52 20 Aug 2014 18 04 21 Aug 2014 09 51 Figure 21 Mount USB Unmount USE There is no drive mounted Archive of Daily Files Isotopic N20 Analyzer kad 3 Oct 2013 14 44 50 3 Oct 2013 14 44 50 x Close Run the Analyzer The File Transfer Error screen Figure 22 displays when either the e User forgot to insert a USB device or e The device was not recognized You may try again with a correctly inserted USB device Local Hard Drive USB Flash Drive home lgr data 2014 08 20 a media N2Oiso_2014 08 20 f0000 txt zip 106 KB 20 Aug 2014 14 06 g floppy 3 Oct 2013 14 44 50 N2Oiso_2014 08 20 f0001 txt zip 307 KB 20 Aug 2014 14 10 floppy0 3 Oct 2013 14 44 50 N2Oiso_2014 08 20_f0002 txtzip 312 KB 20 Aug 2014 14 16 N20iso_2014 08 20_f0003 txt zip 173 KB 20 Aug 2014 14 20 N2Oiso_2014 08 20 f0004 txt zip 94KB 20 Aug 2014 14 53 N20iso_2014 08 20 f0005 txt zip 618 KB 20 Aug 2014 15 00 N2Oiso_2014 08 20 f0006 txt zip 65 KB 20 Aug 2014 15 00 N20iso_2014 08 20_f0007 txt zip 309 KB 20 Aug 2014 15 04 N20iso_2014 08 20_f0008 txt zip 92 KB 20 Aug 2014 15 12 N2Oiso_2014 08 20_f0009 txt zip 91 KB 20 Aug 2014 15 12 N20iso_2014 08 20_f0010 txt zip 315 KB 20 Aug 2014 15 19 N20iso_2014 08 20_f0011 txt zip 84KB 20 Aug 2014 15 26 N20iso_2014 08 20_f0012 txt zip 305 KB i N20iso_2014 08 20_f0013 txt zip 89KB X Failed N20iso_2014 08 20_f0014 txt zip 331 KB Cop
62. ure 58 Analyzer Software Interface Display with Size Adjustment for Android Devices Isotopic N20 Analyzer 57 Wireless Router Setup Set up VNC Software on OS Devices ZyXEL Communications Corporation EFE 3 58 On the iOS device iPad iPhone etc go to Settings gt WiFi gt Connect to Wireless Network Connect to the wireless SSID network listed on the router sticker in this case ZyXEL 0335CB Figure 59 The ZyXEL Wireless Router is installed inside the analyzer and may be accessed by opening the case Model Name MWR102 IP Address 192 168 100 1 Username r miS admini 2 n SSID Network Wireless SSID xe Sat o A PE Wireless PA ION FCC IDS mac Ill Figure 59 Wireless Router Sticker Select your SSID network in this case ZyXEL 0335CB Figure 60 Settings Wi Fi Networks Nolificationa Choose a Motwork 5 F Sian on coniler a E bt Brightness amp Wallpaper Janmsecicaben a gt Ph E oramicguest a gt A SmugMug E 5 SmugMugs a it ae Mall Contacts Calendars a e g Twi adlink iF Messages ZyXEL 0335C8 a E ian gy Music in 72 video Ask te Join Networks om e 24 Photos Krcen noteceks wil bo joined automatically Hino knows nobworks aro available you will be ased before joining a mear network O Noies Figure 60 Network Connections Screen Isotopic N20 Analyzer Wireless Router Setup The Enter Password screen appears Figure 61 4 Inthe
63. xis ICOS uses a high finesse optical cavity as an absorption cell as shown in Figure 36 Unlike multi pass detectors which are typically limited to path lengths of less than two hundred meters an Off Axis ICOS absorption cell effectively traps the laser photon so that on average they make thousands of passes before leaving the cell As a result the effective optical path length may be several thousands of meters using high reflectivity mirrors and thus the measured absorption of light after it passes through the optical cavity is significantly enhanced For example for a cell composed of two 99 99 reflectivity mirrors spaced by 25 cm the effective optical path length is 2500 meters Gas Outlet Gas Inlet to vacuum pump Data Collection and Analysis System Figure 36 Schematic Diagram of an Off Axis ICOS Instrument Isotopic N2O Analyzer 41 About Analyzers and Laser Absorption Spectroscopy Because the path length depends only on optical losses in the cavity and not on a unique beam trajectory like conventional multi pass cells or cavity ring down systems the optical alignment is very robust allowing for reliable operation in the field The effective optical path length is determined routinely by simply switching the laser off and measuring the necessary time for light to leave the cavity typically tens of microseconds As with conventional tunable laser absorption spectroscopy methods e The wavelength of
64. y ates soraa tems Ds your USO gene RAN N20iso_2014 08 20_f0015 txt zip 93 KB N20iso_2014 08 20_f0016 txt zip 89KB Caa N20iso_2014 08 20_f0017 txt zip 76 KB N20iso_2014 08 20_f0018 txt zip 40 KB Tr N20is0_2014 08 20_f0019 txt zip 129 KB 20 Aug 2014 17 08 N20iso_2014 08 20_f0020 txt zip 197 KB 20 Aug 2014 17 11 N20iso_2014 08 20_f0021 txt zip 86 KB 20 Aug 2014 17 13 N20iso_2014 08 20_f0022 txt zip 86 KB 20 Aug 2014 17 14 N20iso_2014 08 20_f0023 txt zip 1 2 MB 20 Aug 2014 17 28 N20iso_2014 08 20_f0024 txt zip 810 KB 20 Aug 2014 17 52 N20iso_2014 08 20_f0025 txt zip 946 KB 20 Aug 2014 18 04 N20iso_2014 08 20_f0026 txt zip 7 6 MB 21 Aug 2014 09 51 Mount USB UnmountUSB There is no drive mounted x Close Figure 22 File Transfer Error Isotopic N20 Analyzer 27 Run the Analyzer Setup Panel The Setup menu has function tabs at the top of the screen that allows you to configure the analyzer and access service mode These tabs let you e Manage file saving settings e Adjust the current time date settings e Configure the serial output e Configure analog output e Calibrate the analyzer to a local gas standard e Enable the laser offset adjustment e Configure the optional Multi Port Inlet Unit MIU To enter setup mode click the Setup button on the user interface control bar See Figure 23 Time Thu Aug 28 13 30 45 2014 Gas Temperature 40 99 C Laser AT 16 40 ps Data File N20lzo 2014 08
65. zero air before measurement The zero air must be a mixture of N and O2 Using only N2 will give a systemic change in the N20 absorption line shape resulting in systemic errors in the isotope measurement Transmitted Intensity Pot on demand Plotevery Nihfa a Figure 89 Rate Selection Menu 76 Isotopic N20 Analyzer Batch Mode Operation The Batch Injection Measurement screen displays Figure 90 This screen combines the three Main Panel display modes on one screen e Numeric e Spectrum e TimeChart The Batch Mode Status display bottom right shows the status of the current batch mode test as shown in Figure 90 327 0 0 8 326 5 J U EN A 06 326 0 i Pg E PRF J bal ES s t TimeChart 325 5 ES Posa 5 iY Y e ae P e o es loi 325 0 i im Dti O 0 s 324 5 A 0 20 40 60 80 100 120 5 0 5 wo j o0 z N 0 325 61 6 03 ppb Measuring batch sample di5NA 12 18 1 43 pp_mil di5NB 78 94 1 66 pp_mil H 0 12897 53 6 73 ppm Measurement N 130 Abort Time Fri Sep 26 157656 2014 Gas Temperature 46 74 C laser Ar Syringe Injecton e i Y Data File N20w50_201409 26_b000 tat Gas Pressure AAB Toer 2 Disabled i i BR Disk Space 35 Figure 90 Batch Injection Measurement Screen Isotopic N20 Analyzer 77 Batch Mode Operation Batch Mode Processing In batch processing mode the analyzer 1 Initiates the batch injection procedure Evacuates the c

Isotopic N20 Analyzer (δ 15N, δ 15N , δ 15N , δ 18O) User Manual

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Isotopic N20 Analyzer (&delta; 15N, &delta; 15N , &delta; 15N , &delta; 18O) User Manual

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Isotopic N20 Analyzer (δ 15N, δ 15N , δ 15N , δ 18O) User Manual