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Agilent Technologies 490 User Manual

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Micro Gas
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User Manual
Agilent Technologies

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Summary of Contents for Agilent Technologies 490

  • Page 1 Agilent 490  Micro Gas Chromatograph User Manual Agilent Technologies...
  • Page 2 Further, to the max- agreement and written consent from  imum extent permitted by applicable Agilent Technologies, Inc. as governed by C A U T I O N law, Agilent disclaims all warranties, United States and international copyright either express or implied, with regard laws.

  • Page 3: Table Of Contents

    Inside View Carrier Gas Connection Power Power source Power Requirements Disposal Specifications Ambient Pressure Ambient Temperature Maximum Operation Altitude Micro GC Cycle with Constant Pressure Micro GC Cycle with Ramped Pressure Installation and Use Pre-Installation Requirements 490 Micro GC User Manual...
  • Page 4 Long Storage Recovery Procedure Sample Gas Handling Using the external filter unit Heated sample lines How to connect your sample to the 490 Micro GC Rear inlet (heated or unheated) Internal inlet Internal bracket for Genie filter 490-Micro GC Optional Pressure Regulators...
  • Page 5 Replacement procedure for Molsieve filters with the RTS option Carrier gas Tube Stop Modification Kit Communications Access the Connection Ports 490 Chromatography Data Systems Ethernet Networks IP Addresses Example network configurations USB VICI Valve Configure Multiple VICI Valves with OpenLab EZchrom USB Wi-Fi 490 Micro GC User Manual...
  • Page 6 Frequently Asked Questions (FAQ) Glossary of network terms External Digital I/O External Analog I/O Errors Error Handling Error List 490 Micro GC User Manual...

  • Page 7: Agilent Technologies

    Instrument Disposal This chapter provides important information about using the Agilent 490 Micro Gas Chromatograph (Micro GC) safely. To prevent any injury to you or any damage to the instrument it is essential that you read the information in this chapter.

  • Page 8: Introduction

    • Hydrogen has a very low ignition energy. • Hydrogen that is allowed to expand rapidly from high pressure into the atmosphere can self-ignite. • Hydrogen burns with a nonluminous flame which can be invisible under bright light. 490 Micro GC User Manual...

  • Page 9: Safety Symbols

    Failure to comply with these precautions violates safety standards of design and the intended use of the instrument. Agilent Technologies assumes no liability for the customer’s failure to comply with these requirements.

  • Page 10: Safety And Regulatory Information

    • Do not accumulate waste solvents. Dispose of such materials through a regulated disposal program and not through municipal sewage lines. 490 Micro GC User Manual...
  • Page 11 When using an extension cord, make sure that the cord is also properly grounded. • Do not change any external or internal grounding connections, as this could endanger you or damage the instrument. 490 Micro GC User Manual...
  • Page 12 • Substituting parts or performing any unauthorized modification to the instrument may result in a safety hazard. • Changes or modifications not expressly approved by the responsible party for compliance could void the user's authority to operate the equipment. 490 Micro GC User Manual...

  • Page 13: Shipping Instructions

    Do not use compressed air to clean the instrument. Instrument Disposal When the Micro GC or its parts have reached the end of their useful life, dispose of them in accordance with the environmental regulations that are applicable in your country. 490 Micro GC User Manual...
  • Page 14 Introduction 490 Micro GC User Manual...

  • Page 15: Instrument Overview

    Micro GC Cycle with Constant Pressure Micro GC Cycle with Ramped Pressure There are several versions of the Agilent 490 Micro GC. All of them use GC channels, each of which consists of an Electronic Gas Control (EGC) injector, column, and detector.

  • Page 16: Principle Of Operation

    Instrument Overview Principle of Operation The 490 Micro GC can be equipped with one to four independent column channels. Each column channel is a complete, miniaturized GC with electronic carrier gas control, micro-machined injector, narrow-bore analytical column and micro thermal conductivity detector (µ TCD),...

  • Page 17: Front View

    Sample 1 and Sample 2 Sample gas inlet connector (for unheated front inlets) “Manual Injection” on page 59 Power On/Off Switch Switch the Micro GC ON or OFF Figure 2 Front view of the 490 Micro GC 490 Micro GC User Manual...

  • Page 18: Back View

    Carrier gas input Carrier gas input connector “Carrier Gas Connection” page 21 Power connector Power connector (male) “Power” on page 23 Figure 3 Back view of the 490 Micro GC 490 Micro GC User Manual...

  • Page 19: Inside View

    Digital input and output External analog I/O signals. signals, such as “External Analog start_stop, ready_out, I/O” on page 124. and start_in. “External Digital I/O” on page 123. Figure 4 Cable connectors (main board G3581-65000 shown) 490 Micro GC User Manual...
  • Page 20 VICI Valves, WIFI interface VICI Valves, WIFI interface, VICI Valves, WIFI interface, USB Storage USB Storage * Optional PRO license required † Optional accessory ‡ Extension boards not included 490 Micro GC User Manual...

  • Page 21: Carrier Gas Connection

    Table 2 Relative thermal conductivities Relative thermal Relative thermal conductivities conductivities Carrier gas Carrier gas Hydrogen 47.1 Ethane Helium 37.6 Propane Methane Argon Oxygen Carbon dioxide 4.4 Nitrogen Butane Carbon monoxide 490 Micro GC User Manual...
  • Page 22 Hydrogen is flammable. If you are using hydrogen as a carrier gas, WA R N I N G pay particular attention to possible leaks at connections inside and outside of the Micro GC (use an electronic leak tester). 490 Micro GC User Manual...

  • Page 23: Power

    C A U T I O N This Power Supply, see Figure 5, is tailored to meet the power needs of your Micro GC. See Table 3 on page 24 for specifications. Figure 5 Model GST220A12-AG1 (P/N G3581-60080) 490 Micro GC User Manual...

  • Page 24: Disposal

    FCC Part 15/CISPR 22 class B, CNS13438 class B, GB9254, EN61000-3-2, EN61000-3-3, EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, EN61000-4-8, EN61000-4-11 (light industry level, criteria A) Dimensions 210 × 85 × 46 mm (L×W×H) Weight 1.1 kg approximately 490 Micro GC User Manual...

  • Page 25: Ambient Pressure

    The Micro GC automatically shuts down if the ambient pressure is greater than 120 kPa. Ambient Temperature The Micro GC automatically shuts down if the ambient temperature exceeds 65 °C. Maximum Operation Altitude Certified up to 2000 meters above sea level. 490 Micro GC User Manual...

  • Page 26: Micro Gc Cycle With Constant Pressure

    This time allows acquisition starts. run is finished. must be downloaded The data system will wait the sample to via the data system. until data is received settle in the from the Micro GC. sample loop. 490 Micro GC User Manual...

  • Page 27: Micro Gc Cycle With Ramped Pressure

    final column head has been time begins. The pressure from the returned to the pressure remains final pressure to initial pressure. the same. the initial Fixed at 500 mS. pressure. 490 Micro GC User Manual...
  • Page 28 Instrument Overview 490 Micro GC User Manual...

  • Page 29: Installation And Use

    Agilent 490 Micro Gas Chromatograph User Manual Installation and Use Pre-Installation Requirements Inspect the Shipping Packages Unpack the Micro GC Review the Packing List 490 Micro GC Installation Restore the Factory Default IP Address Create the Test Method Perform a Series of Runs...

  • Page 30: Pre-Installation Requirements

    The Micro GC will arrive in one large box and one or more smaller cartons. Inspect the cartons carefully for damage or signs of rough handling. Report damage to the carrier and to your local Agilent office. 490 Micro GC User Manual...

  • Page 31: Unpack The Micro Gc

    The instrument has been protected during shipment by protective caps. C A U T I O N Figure 6. Before use, remove these caps, including those on the back panel. Protective shipping caps Figure 6 Protective shipping caps 490 Micro GC User Manual...

  • Page 32: Review The Packing List

    Tubing, SS,1/16in. OD×1.0mm ID, 1 mL, CP4009 0.080 Fingertight Fitting PEEK CP23050 5 FILTERS for EXT. FILTER Assembly CP736467 External Filter Male CP736737 External Filter FeMale CP736736 Micro GC power supply, 12V, 150W G3581-60080 1 490 Micro GC User Manual...

  • Page 33: 490 Micro Gc Installation

    Installation and Use 490 Micro GC Installation If you are installing the 490 Micro GC for the first time, follow the steps as described below. If you are performing a re-installation, see “Long Storage Recovery Procedure” on page 42. Step 1: Connect carrier gas...

  • Page 34: Step 4: Connect To Computer Or Local Network

    • The detector filaments are set to OFF. Step 4: Connect to computer or local network The 490 Micro GC requires a connection with a computer, that has Chromatography Data System installed, for initial method development. This connection uses TCP/IP over Ethernet or Wi-Fi via USB.
  • Page 35 Micro GC in the address field of the web browser. On the web page, click Network. Log in as administrator. Use the factory default login and password: • Login name: admin • Password: agilent 490 Micro GC User Manual...
  • Page 36 IP configuration. Type the IP Address, Subnet mask, and Gateway you want to assign to the Micro GC in the corresponding fields. Figure 9 Micro GC website Click Save to save the IP configuration. 490 Micro GC User Manual...
  • Page 37 If not already configured, complete any additional configuration for the Micro GC in the Chromatography Data System. Ensure the carrier gas types match the gas actually supplied to the Micro GC. Start the Micro GC’s online instrument session. 490 Micro GC User Manual...

  • Page 38: Restore The Factory Default Ip Address

    Installation and Use Restore the Factory Default IP Address Shipped from the factory, the 490 Micro GC (with mainboard G3581-65000) is configured with a default static IP address, see Table 6 on page 39 for the settings. A reset button on the mainboard enables the possibility to restore these default IP settings when required.
  • Page 39 IP settings. The default IP address is now restored. See Table 6 details. Table 6 Factory default IP address settings Default IP address 192.168.100.100 Subnet mask 255.255.255.0 microgc Host name Default Gateway N/A (not used) 490 Micro GC User Manual...

  • Page 40: Create The Test Method

    Monitor the instrument status using the data system’s status display (refer to the data system help for details). Each test method has been designed to determine if the instrument channel is functioning properly and includes an example test chromatogram. 490 Micro GC User Manual...

  • Page 41: Perform A Series Of Runs

    Perform a Series of Runs Create a short sequence of at least three runs using the test sample and method. Run the sequence. After the first run, the results for each channel should become similar to the example chromatograms. 490 Micro GC User Manual...

  • Page 42: Shut Down Procedure

    Micro GC. Refer to the Site Preparation Guide for supply pressures and other gas requirements. Wait at least 10 minutes before switching ON the Micro GC. Immediately check if the detector filaments are switched OFF. Switch OFF if necessary. 490 Micro GC User Manual...
  • Page 43 (160 °C or 180 °C depending on the column limit). Condition the GC column, preferably overnight. This will ensure that all the water has been removed from the column module and no damage will occur to the TCD filaments. 490 Micro GC User Manual...
  • Page 44 Installation and Use 490 Micro GC User Manual...

  • Page 45: Sample Gas Handling

    Sample Gas Handling Using the external filter unit Heated sample lines How to connect your sample to the 490 Micro GC 490-Micro GC Optional Pressure Regulators Manual Injection The Micro GC is built for the analysis of gases and vapors only.

  • Page 46: Using The External Filter Unit

    To ”Sample In” From Micro GC sample line Filter element 5 microns 1/16-inch nut (CP736467, 5 pieces) Figure 12 Heated injector connection Whenever possible, remove moisture from samples introduced to the Micro GC. 490 Micro GC User Manual...

  • Page 47: Heated Sample Lines

    A heated injector and sample line is an option for a channel unit, and is used to prevent sample from condensing in the sample lines when analyzing condensable samples. The heated sample and injector can be controlled between 30 °C and 110 °C. 490 Micro GC User Manual...

  • Page 48: How To Connect Your Sample To The 490 Micro Gc

    Sample Gas Handling How to connect your sample to the 490 Micro GC The following sections describe how to connect your sample to the 490 Micro GC depending on the sample inlet configuration. The metal surfaces of the sample line heater can be very hot.

  • Page 49: Internal Inlet

    Internal sample inlet – 1/16-inch Swagelok fitting Figure 14 Open the side panel, remove the top insulation and loosen the internal sample inlet. Figure 15 Remove the rear panel by unscrewing the three bolts. 490 Micro GC User Manual...
  • Page 50 Figure 16 Remove the PEEK block by unscrewing two bolts. Internal sample inlet – 1/16-inch Swagelok fitting Figure 17 Install the back panel and micro-gasifier, and connect the micro-gasifier sample line to the internal sample inlet using a 1/16-inch Swagelok fitting. 490 Micro GC User Manual...

  • Page 51: Internal Bracket For Genie Filter

    Genie filter(s) is installed on your 490 Micro GC. Connect the sample line to the rear inlet of the 490 Micro GC using 1/16-inch Swagelok fittings. The Genie filter outlet is pre-plumbed and connected to the Micro GC column channels.
  • Page 52 Micro GC. To operate properly, the bypass must remain free of blockage. To access the Genie filter membrane for inspection or exchange, unscrew the two bolts, identified in Figure 19, and lift the upper part of the filter. 490 Micro GC User Manual...

  • Page 53: 490-Micro Gc Optional Pressure Regulators

    Sample Gas Handling 490-Micro GC Optional Pressure Regulators Agilent offers two optional sample inlet pressure regulator assemblies for the 490-PRO Micro GC. These assemblies are provided fully assembled and require field installation on the rear of the GC. G3581-S0003 provides a pressure regulator, Genie filter (for sample drying) and needle valve, along with the required mounting bracket and hardware required for installation.
  • Page 54 WA R N I N G very hot. Before connecting a sample line, allow the GC components to cool to ambient temperature. At the rear of the GC, disconnect any existing sample line from the rear sample inlet. 490 Micro GC User Manual...
  • Page 55 Sample IN Needle valve Sample OUT (drain) Figure 22 G3581-S0003 pressure regulator assembly installed Connect the filter outlet to the sample inlet on the rear of the GC using a 1/16 inch Swagelok fitting. 490 Micro GC User Manual...

  • Page 56: G581-S0004

    0.7 bar (10.1 psi or 70 Kpa) Flow 20 mL/min The sample flows through the pressure regulator and into the rear sample inlet of the GC. A needle valve provides for venting the sample for draining. 490 Micro GC User Manual...
  • Page 57 At the rear of the GC, disconnect any existing sample line from the rear sample inlet. Rear sample inlet Lower mounting bolt Figure 24 Rear sample inlet and lower mounting bolt Remove the lower mounting bolt from the rear panel of the 490 Micro GC User Manual...
  • Page 58 Connect the Sample IN port on the pressure regulator to the sample input line. Start the GC (see “Long Storage Recovery Procedure” page 42). Leak test the system to ensure that all connections are leak free. 490 Micro GC User Manual...

  • Page 59: Manual Injection

    Manual Injection Manual injection is possible with the optional front inlet installed that can accommodate a 1/16-inch sample line. Refer to the Agilent 490 Micro GC Manual Injection Port Field Kit documentation (G3581-90000) for detailed information. Front sample inlet –...

  • Page 60: Injection Procedure

    Opt# 061 CP490205 Luer lock injection port Opt# 062 CP490206 Septum nut injection port and standard sample inlet (incl. ball valve) Opt# 063 CP490207 Luer lock injection port and standard sample inlet (incl. ball valve) 490 Micro GC User Manual...

  • Page 61: Manual Injection Flow Diagrams

    Sample Gas Handling Manual injection flow diagrams Sample-in connector Relief Valve Septum nut for syringe injection Figure 27 CP742701 Septum Nut for Syringe 490 Micro GC User Manual...
  • Page 62 Figure 28 CP742702 Luer lock injection port Sample-in connector Standard Relief Valve Sample inlet Septum nut for syringe injection 3/2 Ball Valve Manual select syringe- or standard injection Figure 29 CP742703 Septum Nut for Syringe, Selectable 490 Micro GC User Manual...
  • Page 63 Sample Gas Handling Sample-in Standard connector Relief Valve Sample inlet Luer lock 3/2 Ball Valve injection port Manual select syringe- or standard injection Figure 30 CP742703 Luer lock injection port, Selectable 490 Micro GC User Manual...
  • Page 64 Sample Gas Handling 490 Micro GC User Manual...

  • Page 65: Gc Channels

    Agilent 490 Micro Gas Chromatograph User Manual GC Channels Carrier Gas Micro Electronic Gas Control (EGC) Inert Sample Path Injector Column Backflush Option Backflush to Detector TCD Detector The instrument contains up to 2 channels in a dual channel cabinet, or up to 4 channels for a quad channel cabinet. A GC channel contains a gas regulator, an injector, a column, and a TCD detector.

  • Page 66: Carrier Gas

    Use the carrier gas type for which your instrument is configured, otherwise the detector filaments can be damaged. Columns (analytical and Microelectronic Gas Clean unit reference) gas control (optional) (EGC) Injector µTCD Reference vent Column vent Sample Out Sample Carrier gas Figure 31 Gas flow diagram 490 Micro GC User Manual...

  • Page 67: Micro Electronic Gas Control (Egc)

    Inert Sample Path The 490 Micro GC is equipped with an Ultimetal -treated sample path. This deactivation method ensures the integrity of the sample and helps to achieve the best detection limits possible.

  • Page 68: Column

    180 °C, the maximum temperature of the column oven. Exceeding this temperature will cause the column to lose efficiency instantly and the column module will need replacement. All channels have a built-in protection that prevents a setpoint above the maximum tempera- ture. 490 Micro GC User Manual...

  • Page 69: Molsieve 5Å Columns

    Peak 4 _________ Oxygen 0.2 % Oxygen 0.2 % Peak 5 _________ Nitrogen 0.2 % Nitrogen 0.2 % Molsieve 5Å 4 m heated Molsieve 5Å 10 m unheated Molsieve 5Å 20 m unheated seconds Seconds Seconds 490 Micro GC User Manual...

  • Page 70: Cp-Sil 5 Cb Columns

    Propane 1.0 % Peak 4 i-Butane 0.14 % i-Butane 0.14 % Peak 5 n-Butane 0.2 % n-Butane 0.2 % CP Sil 5 CB 4 m heated CP Sil 5 CB 6 m unheated Seconds Seconds 490 Micro GC User Manual...

  • Page 71: Cp-Sil Cb Columns

    TBM 6.5 ppm THT 4.6 ppm Peak 3 ________ n-Decane 4.5 ppm CP Sil 13 CB CP Sil 19 CB 12 m heated (TBM) 6 m unheated (THT) -0.5 -0.2 -0.4 -1.5 -0.6 -0.8 Seconds Seconds 490 Micro GC User Manual...

  • Page 72: Poraplot 10M Column

    Peak 1 Composite Balance Peak 2 Ethane 8.1 % Peak 3 Propane 1.0 % Peak 4 i-Butane 0.14 % Peak 5 n-Butane 0.2 % PoraPlot U 10 m heated PoraPlot Q 10 m heated Seconds Seconds 490 Micro GC User Manual...

  • Page 73: Hayesep A 40 Cm Heated Column

    Sample time 30 s Injection time 40 ms Run time 60 s Detector sensitivity Auto Peak 1 Nitrogen 0.77 % Peak 2 Methane Balance Peak 3 Ethane 8.1 % Hayesep A 40 cm heated Seconds 490 Micro GC User Manual...

  • Page 74: Cox And Al203/Kci Columns

    Peak 3 CO 1.0 % Propane 1.0 % Peak 4 Methane 1.0 % i-Butane 0.14 % Peak 5 1.0 % n-Butane 0.2 % Helium Balance 1 m unheated /KCl 10 m heated -0.5 Seconds Seconds 490 Micro GC User Manual...

  • Page 75: Mes (Nga) And Cp-Wax 52 Cb Columns

    MES 14. 2 ppm Methanol 0.15 % Peak 4 ________ Ethanol 0.30 % Helium Balance MES 10 m heated (NGA) CP-WAX 52 CB 4 m heated 4000 3500 3000 2500 2000 -0.3 1500 1000 -500 Seconds Seconds 490 Micro GC User Manual...

  • Page 76: Column Conditioning

    If the Micro GC frequency of use is very high, you might consider routinely leaving the oven temperature at 180 °C overnight. The longer the reconditioning period, the better the column performance. 490 Micro GC User Manual...

  • Page 77: Backflush Option

    78. The injector, two columns, and detector are in series. The sample is injected onto the pre-column where a pre-separation takes place; injection takes place in normal mode. See Figure 33 on page 78. 490 Micro GC User Manual...
  • Page 78 Backflushing saves the time required to elute high boiling components that are not of interest and ensures that the pre-column will be in good condition for the next run. 490 Micro GC User Manual...

  • Page 79: Tuning The Backflush Time (Except On A Hayesep A Channel)

    Figure 35 shows a simple example of tuning the backflush time for the CP-Molsieve 5A channel. Tuning backflush for CP-Molsieve channel Figure 35 Effect of the backflush time on the peak of interest 490 Micro GC User Manual...

  • Page 80: Tuning The Backflush Time On A Hayesep A Channel

    240 seconds is sufficient to backflush all unwanted components from the HayeSep A channel. Peaks of Interest Unwanted Peak Appropriate Backflush Time Seconds Figure 36 Selecting backflush time for a HayeSep A channel 490 Micro GC User Manual...

  • Page 81: To Disable Backflush

    GC Channels To disable backflush To disable backflushing, set the Backflush Time to 0. This puts the system in normal mode during the entire run. 490 Micro GC User Manual...

  • Page 82: Backflush To Detector

    In some cases, the analysis could even be done on just one channel. The Agilent 490 Micro GC offers two types of backflush to detector channels. A CP-Sil 5 CB for natural gas analysis and Al2O3 for refinery gas analysis.

  • Page 83: Tuning The Backflush Time

    (peak height < 3 µV). Set BF time for this channel to that value minus 0.2 sec. A typical “clean cut” time range of 8m 5CB BF2D channel is approximately 0.3-0.5 sec. (See Figure 38 on page 84.) 490 Micro GC User Manual...
  • Page 84 < 3 µV). Set BF time for this channel to that value minus 0.4 sec. A typical “clean cut” time range of 10m Al2O3 BF2D channel is approximately 1-2 sec. (See Figure 39 page 85.) 490 Micro GC User Manual...

  • Page 85: To Disable Backflush

    See Figure 40 for the OpenLAB CDS configuration and Figure 41 on page 86 for the PROstation SW configuration. Figure 40 Method configuration in OpenLAB CDS 490 Micro GC User Manual...

  • Page 86: Checkout Information

    8m 5CB Heated BF2D 10m Al2O3/KCl Heated BF2D Carrier gas Helium Helium Column temperature (°C) Injector temperature (°C) Column pressure (kPa) Sample line temperature (°C) Sample time (s) Injection time (ms) Run time (s) Detector sensitivity Auto Auto 490 Micro GC User Manual...
  • Page 87 Peak 13 1,3-Butadiene 0.311% Peak 14 n-Pentane 0.097% Peak 15 trans-2-Pentene 0.098% Peak 16 2-Methyl-2-butene 0.046% Peak 17 i-Pentene 0.097% Peak 18 cis-2-Pentene 0.094% Peak 19 Figure 42 8m 5CB BF2D for natural gas analysis 490 Micro GC User Manual...

  • Page 88: C6+ Calorific Value Calculation

    /KCl BF2D for refinery gas analysis C6+ Calorific value calculation For calorific value calculation and application setup, please refer to the “calorific power” section from the 490-PRO Micro GC Manual or designated energy meter software. TCD Detector Each GC channel is equipped with a thermal conductivity detector (TCD).

  • Page 89: Channel Exchange And Installation

    Agilent 490 Micro Gas Chromatograph User Manual Channel Exchange and Installation Tools required Replacement procedure for Micro GC channel Replacement procedure for Micro GC channel with RTS option Replacement procedure for Molsieve filters with the RTS option Carrier gas Tube Stop Modification Kit...

  • Page 90: Tools Required

    6- x 7-inch (CP696110) • Flathead screwdriver • Torx T-10 (CP69023) • Torx T-20 (CP69024) • Hexagon socket key 3 mm modified (CP742997) Open-end Flathead Torx Hexagon wrench screwdriver socket key Figure 44 Required tools 490 Micro GC User Manual...

  • Page 91: Replacement Procedure For Micro Gc Channel

    Figure 45 Side cover open Carefully lift the side cover up and remove it. Figure 46 Remove side cover At the back of the Micro GC remove the two (2) Torx screws that hold the top cover. 490 Micro GC User Manual...
  • Page 92 Slide the top cover 5-10 mm in the arrow direction and lift the top cover up. If NO heated sample line is present, please proceed to step Remove the top and side insulation (heated sample line only). Figure 48 Remove top and side insulation 490 Micro GC User Manual...
  • Page 93 Figure 49 Back sample inlet with sample inlet connector manifold Remove the Torx T-10 screw. Figure 50 Remove the Torx T-10 screw Lift the heated sample bracket up and remove it. Figure 51 Heated sample bracket removed 490 Micro GC User Manual...
  • Page 94 “Replacement procedure for Micro GC channel with RTS option” on page 99 Loosen (do not remove) both (2-channel) carrier gas inlet tubes with the help of a Phillips screwdriver, paying extra attention to the O-ring(s). Figure 53 Inlet tube 490 Micro GC User Manual...
  • Page 95 C A U T I O N only be removed using the procedure given below.  1. Place a flathead screwdriver under the end of the tubing. 2. Rotate the screwdriver slowly lifting the tubing of the tube. 490 Micro GC User Manual...
  • Page 96 Carrier gas Carrier gas assy Backflush vent To column pump Sample vent Sample vent Figure 57 Column module tubing diagram Remove the sample inlet nut (or heated sample line) and pull out the capillary tubing. 490 Micro GC User Manual...
  • Page 97 Channel Exchange and Installation Figure 58 Pull out capillary tubing Carefully lift the analytical module out of its socket and replace it. 490 Micro GC User Manual...
  • Page 98 Reassembly is the reverse of removal. During reassembly, inspect the carrier gas tube O-ring(s) and heated N O T E sample connection block O-ring. Replace if necessary. Check for leaks after reassembly. Upload the NEW configuration in the workstation software. 490 Micro GC User Manual...

  • Page 99: Replacement Procedure For Micro Gc Channel With Rts Option

    Figure 60 Removing pump assembly Loosen, do not remove, the screw on the carrier gas inlet tube with the help of a flathead screwdriver, paying extra attention to the O-ring(s). Figure 61 Carrier gas inlet 490 Micro GC User Manual...
  • Page 100 EGC manifold block. All Micro GC systems are supplied with quick release fittings. To remove the colored tubing just push and pull. Pull Push Quick release fitting Figure 62 Tube release 490 Micro GC User Manual...
  • Page 101 1. Place a flathead screwdriver under the end of the tubing. 2. Rotate the screwdriver slowly lifting the tubing out of the tube. Figure 63 Tubing diagram Remove the sample inlet nut (or heated sample line) and pull out the capillary tubing. 490 Micro GC User Manual...
  • Page 102 During reassembly, pay close attention to the carrier gas tube, O-ring(s), N O T E and heated sample connection block O-ring. Replace if necessary. Check for leaks after reassembly. Upload the NEW configuration in the workstation software. 490 Micro GC User Manual...

  • Page 103: Replacement Procedure For Molsieve Filters With The Rts Option

    Figure 66 Channel with RTS option. 2. Filter OUT to T-piece BF 4. Filter OUT to column 1. Filter IN from BF Solenoid 3. Filter IN from Carrier gas Figure 67 Filter connections on the manifold 490 Micro GC User Manual...
  • Page 104 GC oven, with Nitrogen flow of 20 mL/min and with an initial oven temperature of 50 °C, ramp with 3 °C/min to 400 °C and leave for two hours, or condition overnight at 300 °C. 490 Micro GC User Manual...

  • Page 105: Carrier Gas Tube Stop Modification Kit

    Install the O-rings over the stop and nut. Figure 71 Installed O-rings Uninstall the GC-channel according to the Channel Exchange replacement procedure on page 91 Install the stop and nut on the carrier gas tube. 490 Micro GC User Manual...
  • Page 106 Channel Exchange and Installation 490 Micro GC User Manual...

  • Page 107: Communications

    Agilent 490 Micro Gas Chromatograph User Manual Communications Access the Connection Ports 490 Chromatography Data Systems Ethernet Networks USB VICI Valve USB Wi-Fi Frequently Asked Questions (FAQ) External Digital I/O External Analog I/O This chapter describes the input and output ports accessible inside the Micro GC for interfacing with external devices.

  • Page 108: Access The Connection Ports

    Communications Access the Connection Ports Open the cover (Figure 72). Figure 72 Instrument cover 490 Micro GC User Manual...
  • Page 109 External analog I/O signals. signals, such as “External Analog start_stop, ready_out, I/O” on page 124. and start_in. “External Digital I/O” on page 123. Figure 73 External device connectors (mainboard G3581-65000 shown) Close the cover after connecting the cables. 490 Micro GC User Manual...

  • Page 110: 490 Chromatography Data Systems

    Communications 490 Chromatography Data Systems The 490 Micro GC requires an Agilent chromatography data system (CDS) for control, peak identification, integration, data analysis, reporting, and so forth. See Table 21. The CDS requires a LAN (Ethernet) connection or USB Wi-Fi adapter. Multiple...

  • Page 111: Ethernet Networks

    (LAN) or wide area network (WAN). General requirements: • Micro GC with main board G3581-65000 installed (100 Mbps connection) • Cat 6, Cat5e, or Cat 5 UTP/STP cabling. • The network should comply with Standard Ethernet (IEEE 802.3). 490 Micro GC User Manual...

  • Page 112: Ip Addresses

    A peer-to-peer network ( See 75) is required to assign Figure or change the IP address of a Micro GC. It can also be used when no network is required or available. The cable(s) used 490 Micro GC User Manual...
  • Page 113 Data system PC Any IP address allowed Micro GC with main board G3581-6500 Single 490 connected to a local workstation. IP address in the same subnet range as the computer subnet range. Figure 75 Peer-to-peer (single instrument) Peer-to-peer communication requires IP addresses in the same subnet range for the computer and the Micro GC.
  • Page 114 Switch Patch cable Data system PC Any IP address allowed Multiple 490 Micro GCs connected to a local workstation. IP address in the same subnet range as the workstation subnet range. Figure 76 Local network (multiple instruments) OpenLAB CDS maximum connections are limited by the computer speed, license, and network performance.
  • Page 115 Patch cable Data system PC IP address in subnet range of Subnet 1 Can also control Micro GC in Subnet 2. Multiple 490 Micro GCs connected t Router company network. IP address in the same subnet range as Subnet 1.

  • Page 116: Usb Vici Valve

    Before launching OpenLab EZChrom, make sure you have installed the N O T E latest version of the 490 Micro GC driver. The GC license can be PRO or Non-PRO, however, if the USB VICI was configured in PROstation, this can cause a conflict Open the VICI Valve configurator.
  • Page 117 If the IDs are set correctly the check will pass. Figure 79 Check VICI communication Other than configuration, there is no difference between using USB VICIs and Serial VICIs in OpenLab EZChrom. 490 Micro GC User Manual...

  • Page 118: Usb Wi-Fi

    • Supports hotpluging Preparation: One USB Network Interface Card (NIC) (Requires Realteck RTL8188 family chipset.) Insert the USB NIC into USB port of 490 Micro GC or via a USB hub. On your PC desktop, open the wireless connection panel.
  • Page 119 Communications Figure 80 IP properties Now it is able to access to GC's webpage via IP address 192.168.0.2. 490 Micro GC User Manual...
  • Page 120 Communications Figure 81 GC Webpage USB Storage is currently not enabled except in PROstation N O T E 490 Micro GC User Manual...

  • Page 121: Frequently Asked Questions (Faq)

    Ethernet address consists of 6 pairs of hexadecimal digits. Gateway This is one of several settings within the TCP/IP configuration that identifies paths used to connect with Ethernet devices on a different subnet. The Gateway is assigned an IP Address. 490 Micro GC User Manual...
  • Page 122 Micro GC. TCP/IP An international standard protocol used by the Internet. We use this protocol for communication to the Micro GC. You may find several network protocols, such as IPX/SPX and NetBEUI, installed on your computer. 490 Micro GC User Manual...

  • Page 123: External Digital I/O

    Reserved +5 VDC out (electronic fused max 500 mA ) +12 VDC out ( electronic fused max 500 mA ) External Digital I/O Relay contacts maximum 24 Volt 1 Ampere Figure 82 External digital connections 490 Micro GC User Manual...

  • Page 124: External Analog I/O

    -15 VDC out (electronic fused max 100 mA ) +5 VDC out (electronic fused max 500 mA ) +12 VDC out (electronic fused max 500 mA ) Analog GND External analog I/O Figure 83 External analog connections 490 Micro GC User Manual...
  • Page 125 Agilent 490 Micro Gas Chromatograph User Manual Errors Error Handling Error List Agilent Technologies...

  • Page 126: Error Handling

    (for troubleshooting). All Class 1 and higher errors are also logged in the instrument’s flash memory. Individual numbers identify all errors; these numbers are built using the error class and a number. Events are not numbered. 490 Micro GC User Manual...

  • Page 127: Error List

    TCD off and or download. temp. control to default Too low pressure Pressure drops below 35 kPa Check gas supply Pressure fault Pressure state not ready after 5 minutes Check gas supply or replace manifold 490 Micro GC User Manual...
  • Page 128 Flush cycle aborted Flush cycle stopped before completion GC module changed Changing a channel (controller or module) and restarting the instrument TCD Gain calibrated End TCD Gain calibration TCD Offset calibrated End of Offset calibration 490 Micro GC User Manual...
  • Page 129 EDS A.M. Config SVER Electronic Data Sheet Analytical Module incorrect Configuration incorrect EDS A.M. Protected SVER Electronic Data Sheet Analytical Module incorrect Protected Structure Version incorrect Pressure Offset calibration Notification Pressure Offset calibration is complete completed 490 Micro GC User Manual...
  • Page 130 Internal Software Error, ACE reactor stopped. Auto reboot stopped Watchdog Error: Event pump Internal Software Error, Event pump stopped. Auto reboot stopped for 20 s Watchdog Error: IOC Fatal Internal Software Error, IOC fatal error 0 Auto reboot error 0 490 Micro GC User Manual...
  • Page 131 Internal Software Error, IOC fatal error 1 Auto reboot error 1 Watchdog Error: IOC Fatal Internal Software Error, IOC fatal error 2 Auto reboot error 2 Watchdog Error: IOC Fatal Internal Software Error, IOC fatal error 3 Auto reboot error 3 490 Micro GC User Manual...
  • Page 132 Errors 490 Micro GC User Manual...
  • Page 134 Agilent Technologies © Agilent Technologies, Inc. Printed in China, November 2017 G3581-90001...

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