490 Micro GC Natural Gas Analyzer
Contents
1. Be 5 a 4 o o S 3 S a 04 20 25 30 35 40 45 50 55 60 65 Seconds Figure 18 Sample containing hydrogen sulfide analyzed with the PoraPLOT U channel on Analyzer B Natural Gas Analyzers Checkout Information 2 6 meter CP Sil 5 CB The 6 meter CP Sil 5 CB channel of the Natural Gas Analyzer B and the B Extended is specified for the analysis of hydrocarbons from propane to n nonane Analysis of the NGA Gas Calibration standard results in the chromatogram shown in Figure 19 Analysis of the Universal Gas Calibration standard results in a chromatogram similar to Figure 20 5004 Ethane 4004 n Propane gt 3004 i 2004 1004 J ao i Butane n Butane N o i Pentane n Pentane n Hexane 40 0 45 0 50 0 55 0 N a4 w oO 1 0 Seconds Figure 19 NGA Gas Calibration standard analyzed with the 6 meter CP Sil 5 CB channel on Analyzer B c Ss 10 0 J 754 gt E 5 0 4 2 2 s 2 a 8 S x 254 z E amp c cS JN 30 40 50 60 70 80 90 Seconds o YJ So Figure 20 Universal Gas Calibration standard analyzed with the 6 meter CP Sil 5 CB channel on Analyzer B Natural Gas Analyzers 20 Checkout Information 2 Analysis of a sample containing neo pentane results in a chromatogram similar to Figure 21 Analysis of a sample containing hydrocarbons up to n nonane results in a chromatogram similar to Figu2. 110 110 110 Injection time ms 20 40 40 Backflush time s 120 12 Column temperature C 90 60 150 Pressure kPa 340 150 200 Sample line temperature C 110 110 110 For more details of the method see the pdf method file available on the Natural Gas Analyzer CD t The backflush time must be tuned for each new CP Molsieve 5A PoraPLOT U 4 meter CP Sil 5 CB and HayeSep A channel ee Agilent Technologies 29 Appendix C Typical Method Settings for Natural Gas Analyzers Table 3 Method for Agilent 490 Micro GC Natural Gas Analyzer B Method settings PoraPLOT U CP Sil 5 CB_6m Carrier gas Helium Helium Injector temperature C 110 110 Injection time ms 40 40 Backflush time s 17 Column temperature C 60 70 Pressure kPa 175 150 Sample line temperature C 110 110 For more details of the method see the pdf method file available on the Natural Gas Analyzer CD t The backflush time must be tuned for each new CP Molsieve 5A PoraPLOT U 4 meter CP Sil 5 CB and HayeSep A channel Table 4 Method for Agilent 490 Micro GC Natural Gas Analyzer B Extended Method settings CP Molsieve 5A PoraPLOT U CP Sil 5 CB_6m Carrier gas Helium Helium Helium Injector temperature C 110 110 110 Injection time ms 40 40 40 Backflush time s 11 17 Column temperature C 80 60 70 Pressure kPa 200 175 150 Sample line temperature C 110 110 110 For more details of the method see th
3. Analyzer B Extended Natural Gas Analyzers The Agilent 490 Micro GC Natural Gas Analyzer B Extended is used to analyze hydrogen nitrogen oxygen methane carbon dioxide carbon monoxide hydrogen sulfide and hydrocarbons up to n nonane The Agilent 490 Micro GC Natural Gas Analyzer B Extended is a quad cabinet micro GC equipped with three channels e CP Molsieve 5A channel with a backflush option e PoraPLOT U channel with a backflush option e 6 meter CP Sil 5 CB channel The Natural Gas Analyzer B Extended version is equipped with a dual carrier gas option for the CP Molsieve 5A channel It is made flexible for analysis of hydrogen and helium on the CP Molsieve 5A channel if required For the analysis of helium on the CP Molsieve 5A channel the carrier gas must be argon All analyzers are factory tuned on carrier gas helium Before starting up the Agilent 490 Micro GC Natural Gas Analyzer ensure that correct carrier gases are connected for all channels For all types of analyzers the required carrier gas is helium However to analyze helium on the CP Molsieve 5A the carrier gas must be argon The required pressure for carrier gas is 550 kPa 80 psi For more information on the Agilent 490 Micro GC see the Agilent 490 Micro GC User Manual Introduction 2 Checkout Information The Agilent 490 Micro GC Natural Gas Analyzers are factory tuned on carrier gas helium including appropriate settings for back flush times fo
4. a hazard It calls attention to an operating procedure practice or the like that if not correctly per formed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indicated condi tions are fully understood and met Contents 1 Agilent 490 Micro GC Natural Gas Analyzers Introduction 5 Types of Agilent 490 Micro GC Natural Gas Analyzers 5 Agilent 490 Micro GC Natural Gas Analyzer A and the Extended Version 6 Natural Gas AnalyzerA 6 Natural Gas Analyzer A Extended 6 Agilent 490 Micro GC Natural Gas Analyzer B and the Extended Version 7 Natural Gas AnalyzerB 7 Natural Gas Analyzer B Extended 7 2 Checkout Information Introduction 8 Natural Gas Analyzer A and the A Extended Version 10 HayeSep A straight 10 6 meter CP Sil5 CB 11 HayeSep A backflush 13 4 meter CP Sil 5 CB 14 8 meter CP Sil5 CB 16 Natural Gas Analyzer B and B Extended Version 18 PoraPLOTU 18 6 meter CPSiI5CB 20 CP MolsievebA 22 3 Tuning the Backflush Time Tuning the Backflush Time on CP Molsieve 5A PoraPLOT U or CP Sil 5 CB 24 Tuning procedure for the backflush time 24 Tuning the Backflush Time on aHayeSepA 26 Tuning procedure for HayeSep A channel 26 Natural Gas Analyzer Natural Gas Analyzer Appendix A Certificate of the NGA Gas Calibration Standard Appendix B Certificate of the Universal Gas Calibration Standard Appendix C Typical Method Settings for Natural Gas Analyze
5. on Analyzer A Extended Natural Gas Analyzers 17 Checkout Information 2 Natural Gas Analyzer B and B Extended Version PoraPLOT U Methane 400 4 Nitrogen 300 4 mV 200 4 100 4 X gt Carbon Dioxide ee Ethane The PoraPLOT U channel of the Agilent 490 Micro GC Natural Gas Analyzer B and Extended version is specified for the analysis of methane carbon dioxide ethane hydrogen sulfide and propane in natural gas samples The total sample path of this channel is deactivated Ultimetal which results in better performance and peak shape for hydrogen sulfide Analysis of the NGA Gas Calibration standard results in a chromatogram similar to Figure 16 Propane NI a 20 30 35 40 45 50 55 60 65 Seconds Figure 16 NGA Gas Calibration standard analyzed with the PoraPLOT U channel on Analyzer B Natural Gas Analyzers Checkout Information 2 Analysis of the Universal Gas Calibration standard results in a chromatogram similar to Figure 17 Analysis of a sample containing hydrogen sulfide results in a chromatogram similar to Figure 18 20 J 8 101 BSI 5 5 o INE sg E s 53 E E oJ 2 AONAN Fe 20 25 30 35 40 45 50 55 60 65 Seconds Figure 17 Universal Gas Calibration standard analyzed with the PoraPLOT U channel on Analyzer B Methane 75 Ethane 50 B gt lc x E Jo 2 13 2 S
6. peak of interest Natural Gas Analyzers 25 Tuning the Backflush Time 3 Tuning the Backflush Time on a HayeSep A mVolt 100 5 804 604 404 204 For each new HayeSep A channel with a backflush option it is necessary to tune the backflush time properly The tuning procedure of the HayeSep A channel is different than the tuning procedure of a CP Molsieve 5A PoraPLOT U or 4 meter CP Sil 5 CB channel This section describes how to tune the backflush time for the HayeSep A channel The goal for tuning the HayeSep A channel is get all peaks of interest components up to propane on the HayeSep A column while all unwanted peaks that elute after propane are backflushed Tuning procedure for HayeSep A channel 1 Set the backflush time of the HayeSep A channel to 0 seconds 2 Set an appropriate run time for the first analysis for example 300 seconds or longer 3 Analyze the NGA Gas Calibration standard and identify all components in the calibration standard 4 When all peaks of interest are identified select a proper backflush time after propane peak Figure 27 shows an example of the tuning procedure of HayeSep A channel In this example the propane peak elutes around 90 seconds proper backflush time for the HayeSep A here is around 120 seconds Consider that the total run time must be sufficient to backflush all unwanted components from the column The ideal total run time is approximately twice the backflush tim
7. such as moisture carbon dioxide ethane and higher hydrocarbons are backflushed e The PoraPLOT U is tuned on the propane peak while all other components that elute after propane are backflushed e The 4 meter CP Sil 5 CB is tuned on the n pentane while all other hydrocarbons that elutes after n pentane are backflushed Tuning procedure for the backflush time 1 Set the backflush time to 0 seconds and analyze the checkout sample or a proper sample for the specific channel The goal of this is to identify the components in the calibration standard 2 Change the backflush time to 10 seconds and perform a run The following can be observed When the backflush time is set too early the peaks of interest are partially or totally backflushed If the backflush time is set too late the unwanted components are not backflushed and show up in the chromatogram 3 Perform runs with different backflush times until there is no huge difference in the peak of interest To fine tune the backflush time set smaller steps for example 0 10 seconds until you find the optimal backflush time SEE Agilent Technologies 2 Tuning the Backflush Time 3 Figure 26 shows a simple example of tuning the backflush time for the CP Molsieve 5A channel Tuning backflush for CP Molsieve channel Differencein area ees Area_peak of interest 9 10 11 12 13 Backflush time s Figure 26 Effect of the backflush time on the
8. Agilent 490 Micro GC Natural Gas Analyzer User Manual ot Agilent Technologies Notices Agilent Technologies Inc 2012 No part of this manual may be reproduced in any form or by any means including electronic storage and retrieval or transla tion into a foreign language without prior agreement and written consent from Agilent Technologies Inc as governed by United States and international copyright laws Manual Part Number 63582 90002 Edition First edition May 2012 Printed in USA Agilent Technologies Inc 2850 Centerville Road Wilmington DE 19808 1610 USA Warranty The material contained in this docu ment is provided as is and is sub ject to being changed without notice in future editions Further to the max imum extent permitted by applicable law Agilent disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantability and fitness for a par ticular purpose Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing use or perfor mance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms the warranty terms in the sep arate agreement shall control T
9. E zo Z S gt S oO 0 0 4 SLE 25 30 35 40 45 50 55 60 65 70 5 80 85 90 95 Seconds o m o Figure 24 Universal Gas Calibration standard analyzed with the CP Molsieve 5A channel on Analyzer B Extended Natural Gas Analyzers 22 Checkout Information 2 CAUTION The CP Molsieve 5A channel is factory tuned on carrier gas helium If analysis of helium or hydrogen is required on the CP Molsieve 5A channel the carrier gas must be changed and configured for argon The procedure for configuring the carrier gas in OpenLAB CDS EZChrom is described in Appendix D on page 31 Analysis of the Universal Gas Calibration standard results in a chromatogram similar to Figure 25 8 S n gt ake 64 E 3 zu 2 o 3S x z 24 e S S oO D e D e 2 2 C E 04 A A oO 20 30 40 50 60 70 80 90 100 BERETT Seconds Figure 25 Universal Gas Calibration standard analyzed with the CP Molsieve 5A channel on Analyzer B Extended Natural Gas Analyzers 23 ee 3 Tuning the Backflush Time Tuning the Backflush Time on CP Molsieve 5A PoraPLOT U or CP Sil 5 CB Tuning the backflush time is necessary for each new CP Molsieve 5A channel PoraPLOT U channel and 4 meter CP Sil 5 CB channel This chapter describes how to tune the backflush time for these channels e The goal for tuning the CP Molsieve 5A is to get all methane on the column while later eluting components
10. atural Gas Analyzer A is specified for the analysis of methane carbon dioxide ethane and propane Analysis of the NGA Gas Calibration standard results in the chromatogram shown in Figure 1 Analysis of the Universal Gas Calibration standard results in a chromatogram similar to Figure 2 gt 1504 E 100 2 2 3 a Kin 504 S 3 3 3 N S IE 0 ERN ran 10 2 30 0 50 60 70 80 90 7100 Seconds Figure 1 NGA Gas Calibration standard analyzed with the HayeSep A channel on Analyzer A 4 24 oO 1s 904 B4 z E 64 44 3 4 a 24 E 5 e 5 S i gs amp 22 38 3 F 1 N o a a 0 10 20 30 40 50 60 70 80 90 100 Seconds Figure 2 Universal Gas Calibration standard analyzed with the HayeSep A channel on Analyzer A Natural Gas Analyzers 10 Checkout Information 2 6 meter CP Sil 5 CB The 6 meter CP Sil 5 CB channel of the Natural Gas Analyzer A is specified for the analysis of light hydrocarbons from propane up to n nonane Analysis of the NGA Gas Calibration standard results in a chromatogram similar to Figure 3 Analysis of a sample containing neo pentane results in a chromatogram similar to Figure 4 500 Ethane 4004 n Propane gt 3004 E 2004 1004 oO gt i Butane n Butane N D i Pentane n Pentane n Hexane 30 0 35 0 40 0 i 45 0 50 0 l 55 0 Seconds N oa 15 0 1 0 Figure 3 NGA Gas Calibration sta
11. e or higher So in this example a total run time of 240 seconds is sufficient to backflush all unwanted components from the HayeSep A channel Peaks of Interest N Nitrogen Methane Carbon Dioxide Unwanted Peak Appropriate Backflush Time Propane i Butane z _ gt Ethane 2 10 N go 70 80 90 100 110 120 130 140 150 160 170 Seconds Figure 27 Selecting backflush time for a HayeSep A channel Natural Gas Analyzers 26 Agilent 490 Micro GC Natural Gas Analyzer User Manual Appendix A Certificate of the NGA Gas Calibration Standard Part number 5184 3536 Agilent Technologies Zag PRAXGIR Innovating the HP Way Certificate of Analysis NGA Gas Calibration Standard Agilent Part No 5184 3536 5184 3542 Sample Lot No 031111N Concentrations mole Nitrogen 5 16 45 Methane Balance Ethane 8 98 45 Carbon Dioxide 1 49 45 Propane 6 04 45 Isobutane 3 04 45 n Butane 2 00 45 Isopentane 0 500 45 n Pentane 0 500 45 n Hexane 0 100 45 Water content lt 5 ppm Other impurities lt ppm BTU value 1257 Traceability This standard was produced gravimetrically following Specialty Gas Work Instruction 15 Balances used are calibrated per POIS 2 140 traceable to NIST Concentrations were verified on an Agilent model 6890 gas chromatograph using a Wasson valve switch Variable Pressure Control and multiple packed capillar
12. e pdf method file available on the Natural Gas Analyzer CD t The backflush time must be tuned for each new CP Molsieve 5A PoraPLOT U 4 meter CP Sil 5 CB and HayeSep A channel Natural Gas Analyzers 30 Agilent 490 Micro GC Natural Gas Analyzer User Manual Appendix D Carrier Gas Type Configuration The Agilent 490 Micro GC Natural Gas Analyzers are factory tuned using the carrier gas helium When analysis of helium is required the carrier gas must be changed to argon Instruments with the dual carrier option are typically configured as shown in Figure 28 Natural Gas Analyzer B Extended quad channel cabinet Channel 1 Channel 2 Channel 3 Channel 4 MolSieve 5A PoraPLOT U CP Sil 5 CB Empty slot Carrier gas 2 Carrier gas 1 Figure 28 Typical configuration of a dual carrier instrument agit Agilent Technologies 31 Appendix D Carrier Gas Type Configuration Procedure to Change the Carrier Gas Type If you are using Agilent OpenLAB CDS EZChrom edition use the following procedure to change the carrier gas type 1 Inthe Agilent OpenLAB Control Panel Navigation pane select the instrument 2 Inthe Actions toolbar select Configure Instrument See Figure 29 a Agilent OpenLAB Control Pane Management X Be MR IR RR ne Edit Delete Refresh Select Lock Create Configure SE from Clos ata Edit e Notifications Printer Shortcuts Instrument Connection Instru
13. echnology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license Restricted Rights Legend If software is for use in the performance of a U S Government prime contract or sub contract Software is delivered and licensed as Commercial computer soft ware as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract clause Use duplication or disclosure of Software is subject to Agilent Technologies standard commercial license terms and non DOD Departments and Agencies of the U S Government will receive no greater than Restricted Rights as defined in FAR 52 227 19 c 1 2 June 1987 U S Govern ment users will receive no greater than Limited Rights as defined in FAR 52 227 14 June 1987 or DFAR 252 227 7015 b 2 November 1995 as applicable in any technical data Safety Notices CAUTION A CAUTION notice denotes a hazard It calls attention to an oper ating procedure practice or the like that if not correctly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met A WARNING notice denotes
14. el 6890 gas chromatograph using a Wasson valve switch Variable Pressure Control and multiple packed capillary columns Standards Used Praxair UGS Primary Standard serial CC309710 Analytical GC Chromatogram Analytical columns Agilent MS SA PLOT U PLOT TCD 1 0 ml loop He carrier at 35 ml min oven temp 90degC FID 0 1 mi loop He carrier at 30 ml min split mtio 25 1 Ramp 75degC for 6 min to 180degC for 3 75 min at 20degC Amin i FITA TOTFSOTD 2 g _ m n Haptane a 12 IT s ial Date of Release 15 February 2010 Analyst John God Expiration Date 15 February 2012 Senior Chemist ld 2 Agilent Technologies 28 ec Appendix C Typical Method Settings for Natural Gas Analyzers amp z Typical method settings for the Natural Gas Analyzers are given in Tables 1 4 Table 1 Method for Agilent 490 Micro GC Natural Gas Analyzer A Method settings HayeSep A CP Sil 5 CB_6m Carrier gas Helium Helium Injector temperature C 110 110 Injection time ms 40 40 Column temperature C 60 70 Pressure kPa 260 150 Sample line temperature C 110 110 For more details of the method see the pdf method file available on the Natural Gas Analyzer CD Table 2 Method for Agilent 490 Micro GC Natural Gas Analyzer A Extended Method settings HayeSep A CP Sil 5 CB_4m CP Sil 5 CB_8m Carrier gas Helium Helium Helium Injector temperature C
15. eter CP Sil 5 CB channel on Analyzer A Extended i Butane n Butane i Pentane n Pentane 2 a 32 34 N ez 200 o Z 5 wu 150 100 mVolt n Butane neo Pentane i Pentane n Pentane Wo nn a BB a ag 3g 39 Seconds Figure 10 Sample containing neo pentane analyzed with the 4 meter CP Sil 5 CB channel on Analyzer A Extended Natural Gas Analyzers 14 Checkout Information 2 Analysis of the Universal Gas Calibration standard results in the chromatogram shown in Figure 11 15 0 4 12 5 4 10 0 4 mVolt Propane Ethane N Si 1 i Butane n Butane a i m BT Ta hm Seconds Figure 11 Universal Gas Calibration standard analyzed with the 4 meter CP Sil 5 CB channel on Analyzer A Extended Natural Gas Analyzers 15 Checkout Information 2 8 meter CP Sil 5 CB The 8 meter CP Sil 5 CB channel of the Natural Gas Analyzer A Extended is used for the analysis of hydrocarbons from n hexane up to n dodecane The NGA Gas Calibration standard and the Universal Gas Calibration standard do not contain heavy hydrocarbons up to n dodecane Reference chromatograms of the NGA Gas Calibration standard and the Universal Gas Calibration standard are included in this manual For heavy hydrocarbons up to n dodecane an additional sample is analyzed for identification Analysis of the NGA Gas Calibration standard results in the chromatogram shown i
16. figuration Cancel Help Figure 31 The Instrument configuration tab Natural Gas Analyzers 33 Appendix D Carrier Gas Type Configuration 6 Select Apply Configuration The new configuration is sent to the instrument as shown in Figure 32 EZChrom Configuration Ex Instrument intormation IP address 156 141 90 37 GC client version 1 40002 Activate communication Serial number 1107633 MPU version 2 2019606 Driver version 1 8 1 0 10 controller version 1 15 Instrument hardware Automation and remote control Channel Disabled Carrier gas Description r 10m MS5A Heated Inj Backflush RTS opt Helium x 10m PPU Heated Injector Backflush Helium x 6m 5CB Heated Injector Helium 8m 5CB Heated Injector amp wl mi yaa Flush cycles 2 cycles v Vv Continuous flow Pressure unit kPa sA 1 Use peak simulation i Sending configuration to 156 141 90 37 Cancel Help Figure 32 Sending configuration to instrument 7 When the configuration is complete in the Reboot Instrument dialog box select OK See Figure 33 Reboot instrument a Carrier gas has been modified please do the following 1 Turn off the instrument 2 Change the carrier gas on the instrument 3 Turn on the instrument Figure 33 Request after configuration change 8 Turn off the instrument 9 Change the carrier gas on the instrument 10 Restart the Agilent 490 Micro GC Natural Gas Analyzer The Agilent 490 Micro GC is now con
17. figured for carrier gas Argon Natural Gas Analyzers 34 Agilent 490 Micro GC Natural Gas Analyzer User Manual Appendix E Method for CP Molsieve 5A Channel with Carrier Gas Argon Typical method setting for analysis of helium and hydrogen on the CP Molsieve 5A channel Table 5 Method setting for analysis of helium with Natural Gas Analyzer B Extended Method settings Carrier gas Injector temperature C Injection time ms Backflush time s Column temperature C Pressure kPa Sample line temperature C Invert signal CP Molsieve 5A Argon 110 40 11 80 200 110 Yes agit Agilent Technologies 35 RE Agilent Technologies Agilent Technologies Inc Printed in USA May 2012 G3582 90002
18. he NGA Gas Calibration standard and the Universal Gas Calibration standard are shipped with the analyzer and used by the Agilent Customer Engineer at installation The factory tuned method final chromatogram Test Report and the Natural Gas Analyzer User Manual are supplied on the Analyzer CD To perform reference checks on the analyzer use the NGA Gas Calibration standard or the Universal Gas Calibration standard If OpenLAB CDS EZChrom is used load the method from the analyzer CD or create a method using the settings from the method pdf file available on the analyzer CD For a quick start see the method settings for Natural Gas Analyzers listed in Appendix C on page 29 Connect and inject the NGA Gas Calibration standard To analyze helium on the CP Molsieve 5A channel use the Universal Gas Calibration standard for the checkout Ensure that the carrier gas argon is supplied and configured before starting the analysis For more information on how to configure the carrier gas for the analyzer see Appendix D on page 31 Method settings for this analysis can be found in Appendix E on page 35 The NGA Gas Calibration standard and the Universal Gas Calibration standard do not contain hydrogen sulfide A reference chromatogram of hydrogen sulfide is included in this manual Checkout Information 2 Natural Gas Analyzer A and the A Extended Version 300 250 200 Nitrogen HayeSep A straight The HayeSep A channel of the N
19. he Natural Gas Analyzer A Extended is specified for the analysis of methane carbon dioxide ethane and propane Analysis of the NGA Gas Calibration standard results in the chromatogram shown in Figure 7 Analysis of the Universal Gas Calibration standard results in a chromatogram similar to Figure 8 150 a oO D d 100 Oo gt E 3 A E S E o A 2 2 oO a S S 0 2 l 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Seconds Figure 7 NGA Gas Calibration standard analyzed with the HayeSep A channel on Analyzer A Extended Methane oO 1 8 amp Ss 10 2 T 2 5 2 a4 8 S Bee e NZ 8 0 w 2 30 440 450 60 70 80 90 100 110 Seconds Figure 8 Universal Gas Calibration standard analyzed with the HayeSep A channel on Analyzer A Extended Natural Gas Analyzers 13 Checkout Information 2 4 meter CP Sil 5 CB The 4 meter CP Sil 5 CB channel of the Natural Gas Analyzer A Extended is specified for the analysis of light hydrocarbons propane n butane iso butane iso pentane and n pentane Analysis of the NGA Gas Calibration standard results in the chromatogram shown in Figure 9 Analysis of a sample containing neo pentane results in a chromatogram similar to Figure 10 150 Ethane 100 Propane mVolt 50 a Nn 8 0 2 414 amp 4 16 18 2 22 24 Seconds Figure9 NGA Gas Calibration standard analyzed with the 4 m
20. ments and Locations Properties Actions Selected Row Navigation 156 141 90 37 Idle me Ins ts Start Instrument 14130 36 Project gr Analyzers z o Launch A Launch Offline 490 micro GCAnalyzers Activity Log for last week Links JE Instruments Projects x Administration Figure 29 OpenLAB Control Panel Natural Gas Analyzers 32 Appendix D Carrier Gas Type Configuration 3 Double click Agilent 490 Micro GC See Figure 30 Available modules Configured modules Agilent 490 Micro GC Agilent 490 Micro GC Options Cancel Help Figure 30 Configuration window Agilent 490 Micro GC 4 In the EZChrom Configuration dialog box select the Instrument configuration tab 5 Inthe Carrier gas list select Argon See Figure 31 EZChrom Configuration Instrument information IP address 156 141 90 37 GC client version 1 40002 Activate communication Serial number 1107633 MPU version 2 2019606 Driver version 1 8 1 0 10 controller version 1 15 Instrument hardware Instrument configuration Automation and remote control Channel Disabled Carrier gas Description 1 r Helium ba 10m MS54 Heated Inj Backflush RTS opt 2 C Helium Om PPU Heated Injector Backflush Hydrogen 3 J Nitrogen 5CB Heated Injector 4 m Heim Lan 5CB Heated Injector Flush cycles 2 cycles v L Continuous flow Pressure unit kPa 1 Use peak simulation Apply con
21. n Figure 12 Reference check of the Universal Gas Calibration standard results in a chromatogram similar to Figure 13 a n Hexane 15 20 25 30 35 40 45 50 55 Seconds Figure 12 NGA Gas Calibration standard analyzed with the 8 meter CP Sil 5 CB channel on Analyzer A Extended 754 5 0 mV 254 n Hexane gt n Heptane ol 15 20 25 30 35 40 45 50 55 Seconds Figure 13 Universal Gas Calibration standard analyzed with the 8 meter CP Sil 5 CB channel on Analyzer A Extended Natural Gas Analyzers 16 Checkout Information 2 Analysis of a sample containing heavier hydrocarbons up to n decane results in the chromatogram shown in Figure 14 Analysis of a sample that contains heavier hydrocarbons up to n dodecane results in a chromatogram similar to Figure 15 S E S 1 0 4 T d 3 08 S E 9 oO 06 S e q zZ 043 2 4 S 0 2 z2 0 0 IL A 10 20 i 30 40 i 50 60 70 80 90 100110 Seconds Figure 14 Hydrocarbon gas mix containing n heptane to n decane analyzed with the 8 meter CP Sil 5 CB channel on Analyzer A Extended 20 S 22 SE g zZ E 15 J 2 co 1 0 4 2 S v 2 5 S 05 d Ey 8 3 a I 2 ae 20 m 0 80 ET TE 1 ET ET Er ET er a Seconds Figure 15 Hydrocarbon gas mix containing n hexane to n dodecane analyzed with the 8 meter CP Sil 5 CB channel
22. ndard analyzed with the 6 meter CP Sil 5 CB channel on Analyzer A Ethane Propane mV i Butane n Butane i Pentane n Pentane neo Pentane n Hexane 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 Seconds Figure 4 Sample containing neo pentane analyzed with the 6 meter CP Sil 5 CB channel on Analyzer A Natural Gas Analyzers 11 Checkout Information 2 Analysis of the Universal Gas Calibration standard results in a chromatogram similar to Figure 5 Analysis of a sample containing heavier hydrocarbons up to n nonane results in a chromatogram similar to Figure 6 If a sample contains hydrocarbons up to n nonane ensure that the total run time is increased sufficiently to detect all hydrocarbons on this channel a o 10 01 amp 754 a E 501 oe E 25 2 2 a F g 5 251 3 A a 0 04 10 20 30 40 l 50 60 70 80 90 Seconds Figure 5 Universal Gas Calibration standard analyzed with the 6 meter CP Sil 5 CB channel on Analyzer A Propane Ji n Butane n Nonane n Pentane gt n Hexane gt n Heptane gt n Octane 100 150 200 250 300 350 400 Seconds o al t Figure6 Sample containing hydrocarbons up to n nonane analyzed with the 6 meter CP Sil 5 CB channel on Analyzer A Natural Gas Analyzers 12 Checkout Information 2 HayeSep A backflush The HayeSep A channel with backflush option of t
23. r the following channels e HayeSep A e A meter CP Sil 5 CB e CP Molsieve 5A e PoraPLOT U The final checkout of the Agilent 490 Micro GC Natural Gas Analyzer is performed with a NGA Gas Calibration standard and a Universal Gas Calibration standard e The NGA Gas Calibration standard contains nitrogen methane ethane carbon dioxide propane iso butane n butane iso pentane n pentane and n hexane This natural gas standard does not contain all components specified for each type of Natural Gas Analyzer Therefore a second checkout sample the Universal Gas Calibration standard is analyzed on the Natural Gas Analyzer e The Universal Gas Calibration standard contains helium neon hydrogen oxygen nitrogen methane ethane ethylene carbon dioxide carbon monoxide acetylene propane methyl acetylene n butane n hexane and n heptane Not all components in the Universal Gas Calibration standard are specified for the Natural Gas Analyzer pe Agilent Technologies 8 Natural Gas Analyzers Checkout Information 2 More detailed information about the NGA Gas Calibration standard and the Universal Gas Calibration standard can be found in Appendix A on page 27 and Appendix B on page 28 The components specified for each channel are described in Agilent 490 Micro GC Natural Gas Analyzer A and the Extended Version on page 6 and Agilent 490 Micro GC Natural Gas Analyzer B and the Extended Version on page 7 T
24. re 22 For samples that contain hydrocarbons up to n nonane increase the total run time to detect all hydrocarbons on this channel 2 5004 S a 400 2 2 o 3004 gt J o 2004 2 a om 4 u z o F e E 1004 5 3 4 3 pa 0 Pa N 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 Seconds Figure 21 Sample containing neo pentane analyzed with the 6 meter CP Sil 5 CB channel on Analyzer B 5 n Octane n Nonane n Pentane gt n Hexane gt n Heptane 0 50 100 150 200 250 300 350 400 Seconds Figure 22 Sample containing hydrocarbons up to n nonane analyzed with the 6 meter CP Sil 5 CB channel on Analyzer B Natural Gas Analyzers 21 Checkout Information 2 CP Molsieve 5A The CP Molsieve 5A channel of the Natural Gas Analyzer B Extended is used for the analysis of permanent gases such as hydrogen oxygen nitrogen methane and carbon monoxide Analysis of the NGA Gas Calibration standard results in a chromatogram similar to Figure 23 Analysis of the Universal Gas Calibration results in the chromatogram shown in Figure 24 Oxygen mV r Neon Nitrogen Methane 10 15 20 25 30 35 40 45 50 55 60 Seconds Figure 23 NGA Gas Calibration standard analyzed with the CP Molsieve 5A channel on Analyzer B Extended Cc gt 12 5 o 8 10 0 2 7 5 4 v 5 04 E i 2 g ms 5 3 C
25. rs Appendix D Carrier Gas Type Configuration Procedure to Change the Carrier Gas Type 32 Appendix E Method for CP Molsieve 5A Channel with Carrier Gas Argon Introduction 1 Agilent 490 Micro GC Natural Gas Analyzers Natural gas is a fossil fuel Millions of years ago the remains of plants animals and micro organisms were buried underneath layers of soil and sediment Due to the weight of the soil and sediment the pressure and temperature increased This resulted in the slow transformation of the organisms into natural gas and oil The composition of natural gas varies widely Natural gas is a combustible mixture of hydrocarbon gases that mainly consists of methane smaller amounts of light hydrocarbons such as ethane propane n butane n pentane hexanes plus and other gases such as nitrogen carbon dioxide oxygen hydrogen and hydrogen sulfide Natural gas can also contain traces of argon helium neon and xenon Natural gas in its pure form is colorless and odorless Natural Gas Analyzers have been designed to analyze the different compositions of natural gas Types of Agilent 490 Micro GC Natural Gas Analyzers The following four types of Natural Gas Analyzers can be used to analyze natural gas e The Agilent 490 Micro GC Natural Gas Analyzer A e The Agilent 490 Micro GC Natural Gas Analyzer A Extended e The Agilent 490 Micro GC Natural Gas Analyzer B e The Agilent 490 Micro GC Natural Gas Analyzer B Ex
26. tended Apg Agilent Technologies 3 Agilent 490 Micro GC Natural Gas Analyzers Agilent 490 Micro GC Natural Gas Analyzer A and the Extended Version Natural Gas Analyzer A The Agilent 490 Micro GC Natural Gas Analyzer A is used to analyze natural gas samples containing methane carbon dioxide and hydrocarbons up to n nonane The Agilent 490 Micro GC Natural Gas Analyzer A is a dual cabinet micro GC equipped with two channels e HayeSep A channel straight e 6 meter CP Sil 5 CB channel Natural Gas Analyzer A Extended Natural Gas Analyzers The Agilent 490 Micro GC Natural Gas Analyzer A Extended is used to analyze methane carbon dioxide and hydrocarbons up to n dodecane The Agilent 490 Micro GC Natural Gas A Extended is a quad cabinet micro GC equipped with three channels e HayeSep A channel with a backflush option e 4 meter CP Sil 5 CB channel with a backflush option e 8 meter CP Sil 5 CB channel 1 Agilent 490 Micro GC Natural Gas Analyzers 1 Agilent 490 Micro GC Natural Gas Analyzer B and the Extended Version Natural Gas Analyzer B The Agilent 490 Micro GC Natural Gas Analyzer B is used to analyze methane carbon dioxide hydrogen sulfide and light hydrocarbons up to n nonane in natural gas The Agilent 490 Micro GC Natural Gas Analyzer B is a dual cabinet micro GC equipped with two channels e PoraPLOT U channel with a backflush option e 6 meter CP Sil 5 CB channel Natural Gas
27. y colu Standards Used Praxair NGA Primary Standard Source Gas serial 155624D Analytical GC Chromatograms Analytical columns Agilent MS 5A PLOT U PLOT TCD 1 0 ml loop He carrier at 35 ml min oven temp 90degC FID 0 1 mi loop He carrier at 30 ml min split ratio 25 1 Ramp 75degC for 6 min to 180degC for 3 75 min at 20degC min Date of Release 11 March 2011 Analyst John J Goddard Expiration Date 11 March 2013 Senior Chemist 27 Agilent 490 Micro GC Natural Gas Analyzer User Manual Appendix B Certificate of the Universal Gas Calibration Standard Part number 5184 3541 Agilent Technologies eier Z PRAXAIR Certificate of Analysis Universal Gas Calibration Standard Agilent Part No 5183 4800 5184 3541 Sample Lot No 021510U Concentrations tmole Helium 0 1000 45 n Hexane 0 0500 45 Neon 0 0496 45 n Heptane 0 0500 45 Hydrogen 0 0988 45 Water content HO lt 5 ppm Oxygen 0 0500 5 Other impurities HC s lt I ppm Nitrogen 0 1000 5 Methane Balance Ethane 0 0497 45 Ethylene 0 0497 45 Carbon Dioxide 0 0500 45 Carbon Monoxide 0 0995 45 Acetylene 0 0494 45 Propane 0 0501 45 Methyl Acetylene 0 0501 45 n Butane 0 0501 45 Traceability This standard was produced gravimetrically following Specialty Gas Work Instruction 15 Balances used are calibrated per POIS 2 140 traceable to NIST Concentrations were verified on an Agilent mod
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