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Thermo ARL 3460, Technical Description

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Thermo Electron S.A. 
En Vallaire Ouest C, case postale 
CH-1024 Ecublens, Switzerland 
 
Tel. (++41) (21) 694 71 11 
Fax (++41) (21) 694 71 12 
http://www.thermo.com  

 

 

 
 

TECHNICAL DESCRIPTION 

 
 
 

ARL 3460 Metals Analyzer 

Optical Emission Spectrometer

 

 

 

 

 

 

Summary of Contents for ARL 3460

Page 1: ...lectron S A En Vallaire Ouest C case postale CH 1024 Ecublens Switzerland Tel 41 21 694 71 11 Fax 41 21 694 71 12 http www thermo com TECHNICAL DESCRIPTION ARL 3460 Metals Analyzer Optical Emission Spectrometer ...

Page 2: ...ce to user 4 1 4 Accessories and options 4 1 5 Spectrometer computer system 5 1 6 OXSAS Analytical Software 5 1 7 Technical Description 6 1 8 Storage 9 1 9 Laboratory requirements 9 1 10 Electrical requirements 10 1 11 Argon requirements 11 2 INSTALLATION OF ARL 3460 METALS ANALYSER 12 3 SAMPLE PREPARATION 13 3 1 Sample Taking Moulds 13 3 2 Surface Preparation Sample Preparation Machines 15 ...

Page 3: ...under this silicon is to be found The following figure gives a rough representation of this excitation 4 4 4 Initial energy E1 Energy E2 Return to energy E1 Supplied energy DE Emission of photon of wavelength l E2 E1 h n h c l Excitation of an atom A sample containing several different elements will therefore produce light composed of wavelength specific to each of the elements By separating these...

Page 4: ... or metal products and user needs an analysis system that will not let him down The model ARL 3460 will go on working 24 hours per day 7 days per week to keep production facility on track Absolute accuracy of any analysis depends totally upon the calibration of the instrument The model ARL 3460 is factory calibrated using CARL This sophisticated multi variable regression tool corrects for matrix e...

Page 5: ...ical emission spectrometer offering both flexibility and comprehensive capabilities in one state of art package 32 bits software that runs on Windows XP Professional and includes the following main features Modern State of the Art Graphic User Interface Integrated Microsoft SQL Server 2005 Express relational database which stores your set up data and analyses Quantitative analysis with analysis pa...

Page 6: ...control and other abnormal states bias trends etc according to numerous normalization rules Control samples analysis scheduling Instrument standardization with history Type standardization with history Management of SCT samples supervision of the status and maintenance of Setting Up Control and Type Standards samples One click creation of a batch with all samples requiring analysis Monitoring inst...

Page 7: ...for optimum phototube adjustment each attenuator has 41 steps Grating The spectrometer is provided with the following grating appropriately selected for your analytical task 1080 gr mm 1667 gr mm 2160 gr mm Ruling lines mm Order Blase nm Range nm Inverse dispersion nm mm 1080 1st 2 nd 3 rd 4 th 600 300 200 150 400 820 230 400 170 230 130 205 0 93 0 47 0 31 0 23 1667 1st 2 nd 3 rd 347 173 116 220 5...

Page 8: ...f the photomultipliers as well as their life time Source excitation model HIREP HIgh REPetition source Power 400 VP Ignitor 15 KVP Spark discharge rate 400 discharges sec 400 Hz Measuring method Integration Spectrometer control ARL MMB 88 microprocessor utilising CMOS technology with status measuring card A D converters and attenuators included for each channel Up to 60 analytical channels Dust pr...

Page 9: ...The instrument must stay on its transportation pallet This makes subsequent moves easier and limits any vibrations It is very important to have good air circulation around the instrument during storage Dust can be cleaned but humidity is harmful 1 9 Laboratory requirements Ambient temperature 16 30 C maximum rate of change 5 C per hour Humidity 20 80 relative Altitude 2 500 meters above sea level ...

Page 10: ...work In the case of an unstable network a voltage stabiliser must be inserted In such a case the connection becomes as follows V V 230 V x 0 V I max 15 A V 230 V 10 15 P 5 kVA Line Neutral Earth L N E Instrument Line Input Filter brown blue yellow green Stabiliser Input Output Unstable Network without Neutral If a network similar to the above described is moreover unstable a voltage stabiliser mus...

Page 11: ...ave a minimum purity of 99 996 and conform to the following specifications 5 ppm O2 20 ppm N2 5 ppm H2O 5 ppm CO2 CH4 For analysing cast iron with Si 1 for aluminium and magnesium alloy the highest impurity contents for oxygen and water vapours are 2 ppm O2 3 ppm H2O For the analysis of nitrogen and oxygen the required quality is Argon quality Purity N2 O2 Argon 57 99 9997 0 6 ppm 0 3 ppm As far a...

Page 12: ...given an introduction to the normal use of the software This basic teaching should not exceed one day Notes Sample preparation analytical assistance analytical calibrations extended software teaching teaching the maintenance personnel troubleshooting as well as other services if they are not included in the contract are additional jobs outside installation These will be carried out after the instr...

Page 13: ...ple Taking Moulds Sample taking for spectrometer analysis is a fundamental technique Several spectroscopy books explain the procedure and advise which moulds should be used for a given application DIN and ASTM standards also provide specifications and information about this subject Generally The sample cooling must be rapid to produce a fine grain metallic structure The mould is normally made of c...

Page 14: ... cast iron malleable iron and nodular cast iron The cooling speed is very high to suppress precipitates cut here useful surface for analysis Traces The ring mould type shown bellow is suitable for the following metals Pure metals for trace analysis or metals that will have low tendency to segregation The ring is of stainless steel or ceramic so that the sample will be mostly cooled by the bottom c...

Page 15: ...reliminary surface preparation roughing and a fine grain for final sample surface preparation abrasive disk This surface preparation method is the quickest way to prepare iron nickel and cobalt samples as well as a few coppers The sample must be thick enough to allow the operator to hold without the risk of injury to his fingers The abrasive paper disk based with aluminium and silicon oxide mixed ...

Page 16: ...oft metals Milling is also the recommended method for the sample preparation of steel analysis with nitrogen and carbon at lower level than the 10 ppm The milling machine is more suitable than a lathe for samples with complex shapes e g melted or machined pieces Moreover the cutting speed of the milling machine is constant which ensures a regular machined surface The surface preparation is normall...

Page 17: ... 40 tons If the useful surface area to be analysed is smaller than the 15 mm standard hole of the standard analysis table one should use another smaller hole table or a special small sample adapter to accommodate it s size Inductive Furnace Metallic chips can be re melted in a furnace This furnace provides solid samples that can be used for spectroscopy analysis ...

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