Related Manuals for Agilent Technologies Graphite Tube Atomizer GTA 120
Summary of Contents for Agilent Technologies Graphite Tube Atomizer GTA 120
- Page 1 Agilent Graphite Tube Atomizer GTA 120 (Including GTA Viewing and Fume Extraction Apparatus) User’s Guide...
- Page 2 1995), or as a “commercial item” as indicated conditions are fully defined in FAR 2.101(a) or as understood and met. “Restricted computer software” as defined in FAR 52.227-19 (June 1987) or any equivalent agency regulation or Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 3: Table Of Contents
Electrical Hazards Compressed Gas Hazards Chemical Hazards Other Electromagnetic Compatibility EN55011/CISPR11 ICES/NMB-001 South Korean Class A EMC declaration 2. Introduction Working Environment Specifications Environmental Conditions Power Gas Supplies Water Supply Weights and Dimensions Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 4 Installing the Mirror The Optional GTA Viewing/Fume Extraction Accessory Installing the Programmable Sample Dispenser (PSD) Graphite Tubes and Platforms Types of Available Graphite Tubes Types of Available Graphite Platforms Inserting a Graphite Tube Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
- Page 5 Operation and Maintenance 6. Maintenance General Graphite Shroud and Electrodes Hoses and Connections Cleaning the Quartz Windows Removing and Replacing Electrodes Non-Zeeman Electrode Removal Non-Zeeman Electrode Replacement Zeeman Electrode Removal Zeeman Electrode Replacement Fuses Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
- Page 6 Contents This page is intentionally left blank. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 7: Safety Practices And Hazards
The covers on instruments and accessories must not be removed by the operator, except as permitted for the routine maintenance tasks detailed in the relevant operation manuals. Service is to be performed only by Agilent field support engineers. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 8: Verifying Safe State
This includes running performance checks to verify the instruments safety systems are functioning correctly. Check the general condition of the instrument during operation for wear or signs of corrosion that are likely to inhibit function or safety. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 9: Warning Symbols
Corrosive liquid Electrical shock Explosion hazard Heavy weight Eye hazard Fire hazard (danger to feet) Heavy weight Hot surface Magnetic hazard (danger to hands) Moving parts Noxious gas Toxic hazard Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 10 The following symbols appear on the instrument for your information. Mains power on Mains power off Fuse Single phase alternating current Disconnect all power plugs Inlet gas Inlet for cooling liquid Outlet for cooling liquid Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 11: Notes
Panels or covers that are retained by screws on the GTA may only be opened by Agilent field service engineers. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 12 The Zeeman magnet generates a variable magnetic field of 0.8 Tesla (at mains frequency) in the workhead. Pacemakers and magnetic storage media must be kept at least 300 mm from the magnet. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 13: Compressed Gas Hazards
Always ensure that laboratory safety practices governing the use, handling and disposal of such materials are strictly observed. These safety practices should include the wearing of appropriate safety clothing. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 14: Other
Class A equipment is equipment suitable for use in all establishments other than domestic and those directly connected to a low voltage power supply network which supplies buildings used for domestic purposes. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 15: Ices/Nmb-001
Changes or modifications not expressly approved by Agilent Technologies could void the user’s authority to operate the equipment. ICES/NMB-001 This ISM device complies with Canadian ICES- 001. Cet appareil ISM est conforme à la norme NMB-001 du Canada. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 16: South Korean Class A Emc Declaration
This equipment is Class A suitable for professional use and is for use in electromagnetic environments outside of the home. A급 기기 (업무용 방송통신기자재) 이 기기는 업무용(A급) 전자파적합기기로서 판 매자 또는 사용자는 이 점을 주의하시기 바라 며, 가정외의 지역에서 사용하는 것을 목적으로 합니다. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 17: Introduction
The GTA 120 is compatible with the Agilent 200 Series AA (including the 140 AA) NOTE ONLY. More information on the operation of your GTA can be found in the comprehensive reference supplied with your GTA — ‘Analytical Methods for Graphite Tube Atomizers'. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 18: Working Environment
Operating within 0-853 m 10-35 8-80 performance (0-2800') specifications 853-2133 m 10-25 8-80 (2800-7000') Power Voltage 208, 220, 230, or 240 VAC Frequency 50-60 Hz Normal standby consumption 15 A Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 19: Gas Supplies
Zeeman spectrometer (behind the exterior panel). Gas Supplies An inert gas is always needed at the ‘Normal’ gas inlet to the GTA. This gas is used to shroud the hot graphite components and prevent oxidation. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 20: Water Supply
1.5 L/min at 180 kPa (27 psi) Typical flow rate at recommended pressure range 1.5–2.0 L/min Maximum pressure to the regulator 700 kPa (100 psi) Typically removes 950 W of heat at 20 °C. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 21: Weights And Dimensions
950 x 760 x 900 mm (37 x 30 x 35 in) [includes PSD] The length of the connection between the control unit and the furnace (the umbilical cord) is 380 mm (15 in.). Locate the PC keyboard and mouse for ergonomically correct access. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 22 Introduction This page is intentionally left blank. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 23: Getting Started
For Zeeman spectrometers, the furnace can remain in the sample compartment at all times. The GTA uses the PSD (Programmable Sample Dispenser) to automatically deliver measured volumes of sample to the furnace. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 24: Gta Control Unit
The power switch is a rocker type on-off circuit breaker for the mains power supply, which also provides over-current protection. If the atomizer is held at high temperatures (2800 °C) for long periods of time NOTE (20 seconds) the circuit breaker may trip. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 25: Back View
The GTA will be set up, ready for use by a field service engineer during installation. However, you can also refer to sections on the Pages 26 and 27 for more information on the water and gas supplies. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 26: Gta Furnace
An automatic cutout will stop operation if the water temperature exceeds the maximum temperature as specified in the ‘Water Supply’ section on Page 20. Ensure that the return path is not blocked or switched off. NOTE Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 27: Gas Supplies
Refer to the SpectrAA Help or ‘Analytical Methods for Graphite Tube Atomizers' for more information on the use of alternate gases. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 28 NEVER use pure hydrogen (or any gas with a hydrogen content greater than 5%) in the GTA. You may use a proprietary, pre-packaged mixture of 95% argon and 5% hydrogen as an alternate gas. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 29: Using Your Gta
Graphite Tubes and Platforms Removing Your GTA Furnace Installation Before proceeding, you should have: Read the Safety section in this manual and your instrument User’s Guide Set up the AA instrument Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 30: Moving The Accessory
To remove the GTA 120 furnace from its storage cradle and install it in the sample compartment: Ensure that both the spectrometer and GTA control unit are switched off and that the spraychamber, etc. have been removed and safely stowed. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 31 Then insert the metal spigot into the slot. Tighten the securing screw on the bottom right-hand side of the furnace so that the furnace is firmly secured to the mounting block. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 32: Zeeman Gta
(see Figure 4). Figure 4. Removing the left panel on the instrument Lift the furnace towards the sample compartment, ensuring the umbilical cord is not twisted as you do so. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 33 Refit the left hand panel. Align the HC lamps. Refer to the SpectrAA Help for instructions. Carefully tilt the workhead back into the sample compartment. 10 Align the vertical furnace position. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 34: Setting The Gas Supply
The use of higher pressures may burst water hoses within the furnace assembly, CAUTION requiring service replacement. After turning on your supply, you should check all hoses and connections for leaks. If you find any you should contact your Agilent field service engineer. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 35: Installing The Mirror
WARNING Eye Hazard To avoid eye damage DO NOT look at a glowing furnace. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 36: The Optional Gta Viewing/Fume Extraction Accessory
Picture Omega platform tube, pyrolytically 6310003700 coated (Packet of 10) Partitioned tube, pyrolytically coated 6310001200 (Packet of 10) Plateau, pyrolytically coated (Packet of 6310001100 10) required for use with pyrolytic graphite platforms Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 37: Types Of Available Graphite Platforms
Alternatively, you can attach and start the sample dispenser and check that the sampler dispensing capillary is perpendicular to the platform. Refer to your PSD operation manual. Normal platforms cannot be used with partitioned tubes. NOTE Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 38: Inserting A Graphite Tube
Handle graphite tubes with care and only in a clean working environment. NOTE Video clips of how to insert graphite tubes are available in the Agilent SpectrAA NOTE Help. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 39 Figure 8. Aligning the graphite tube using the alignment tool Push the furnace back into position. Figure 9. Using the tool ensures correct injection hole positioning (top view). Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 40: Removing A Graphite Tube
Turn off the GTA control unit. Remove the PSD if it is connected (refer to your PSD User’s Guide). Remove the left-hand panel on the instrument and open the access door on the GTA control unit. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 41 WARNING The furnace workhead is very heavy. Use appropriate lifting techniques when moving the furnace. Particular care should be taken if the bench or trolley are positioned in front of the instrument. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
- Page 42 Using Your GTA This page is intentionally left blank. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 43: The Gta Viewing/Fume Extraction Accessory (Optional)
The GTA viewing/fume extraction accessory can be used with graphite furnace operation on either a Flame or Zeeman instrument. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 44: Requirements For Fume Extraction
Contact your Agilent field service engineer if further assistance is required. To check the pressure, remove the handle and attach a suitable manometer. Figure 10. Checking the flow rate through the accessory Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 45: Installing The Gta Viewing/Fume Extraction Accessory
Set the support bracket to the required location for your instrument type. To adjust the bracket, loosen the screws and slide the bracket to the desired position. Refer to Figures 12 and Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 46 Refer to Figures 14, 15 and 16. Edge of flame shield Figure 14. The GTA viewing/fume extraction accessory clips onto the flame shield and is secured by spring-clips. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
- Page 47 Check that the accessory is firmly in place and cannot move from side to side. The curve at the bottom of the accessory should be centered over the sample port. Refer to Figure 17. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 48: Installing The Extraction System To The Laboratory Exhaust System
150 mm (5 in.) duct and the smaller one if you have a 125 mm (5 in.) duct. If your duct is a different size, contact your local Agilent field service engineer. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 49 If you have a 125 mm duct, unscrew the large adaptor plate from the exhaust hose and screw on the small adaptor plate. If you have a 150 mm duct, the adaptor plate already attached to the accessory will be sufficient for your duct. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
- Page 50 Before running the instrument in flame mode, remove the accessory from both CAUTION the instrument and the exhaust duct. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 51: Operation And Maintenance
When the hose is reinstalled it should sit approximately level with the base of the white block on the accessory. Refer to Figure 21. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 52 If the exhaust hose becomes dirty, it may be removed and cleaned with water. Refer to Page 51 for instructions on removing the exhaust hose. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 53: Maintenance
Graphite Shroud and Electrodes At frequent intervals, inspect the inside of the graphite shroud, which is mounted in the centre cooling block. Also check the contact surfaces of the electrodes. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 54: Hoses And Connections
After sonication, rinse the window with distilled water and allow to dry before refitting. To replace the window assemblies, push and twist the assembly back into the electrode housing. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 55: Removing And Replacing Electrodes
Ensure that the electrode is inserted the right way around, as described in these instructions. Non-Zeeman Electrode Removal You will need: Electrode removal kit Gloves Set of new electrodes Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 56 Do not damage the cooling water tubing. Pass the bolt from the supplied kit through the electrode on the right from the right side. The threaded portion of the bolt will protrude through the electrode. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
- Page 57 Tighten the nut to remove the electrode as before. 13 Unscrew the nut from the bolt and discard the old electrode. 14 Thoroughly clean out the inside of both housings. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 58: Non-Zeeman Electrode Replacement
While holding the bolt and adapter onto the electrode, position the electrode against the inner side of the electrode housing. Ensure the electrode is straight, so that it goes into the housing aligned. NOTE Figure 24. Left electrode replacement Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 59: Zeeman Electrode Removal
Zeeman Electrode Removal You will need: Zeeman electrode removal kit Gloves Powder free nitrile (or fabric) gloves should be used. NOTE Set of new electrodes Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 60 Figure 26. The Zeeman workhead 1. Latch 3. Center block 2. Magnet screw 4. Window 5. Lever Before removing the electrodes, remove the furnace from the sample NOTE compartment as described on Page 40. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
- Page 61 4. Stainless steel collar Place the spacer over the electrode on the inside of the furnace. Ensure that the spacer sits inside the rubber grommet and doesn't pinch the NOTE rubber when clamped. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
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Page 62: Zeeman Electrode Replacement
You should be able to feel when the electrode is fully home, as turning the nut will become difficult. Release and remove the nut. Remove the other components of the tool from the furnace. Repeat Steps 3 to 5 to insert the right hand electrode. Agilent Graphite Tube Atomizer GTA 120 User’s Guide... -
Page 63: Fuses
To replace a fuse, disconnect the accessory from the power supply, and replace the blown fuse with one of the type and rating mains indicated below. Figure 28. Rear of GTA unit Agilent Graphite Tube Atomizer GTA 120 User’s Guide... - Page 64 Reconnect the accessory to the mains supply. If a fuse blows repeatedly, it may indicate other problems with the accessory. NOTE You should contact your local Agilent sales office and arrange a service call. Agilent Graphite Tube Atomizer GTA 120 User’s Guide...
- Page 66 Safety Practices and Hazards Introduction Getting Started Using your GTA The GTA Viewing/Fume Extraction Accessory (Optional) Maintenance © Agilent Technologies 1993, 1995-1997, 2003, 2004, 2010, 2012, 2016, 2018 4/18 *8510118500* *8510118500* 8510118500 Issue 10...