Digesdahl® Digestion Apparatus

100 Pages·1999·1.3 MB·English

23130-18
Digesdahl® Digestion
Apparatus
Models 23130-20, -21
Instrument Manual
©HachCompany,1989-91,1995-97,1999.Allrightsreserved.PrintedintheU.S.A. hm/ct2/978ed
aa/dkRev.2,9/99
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2
CERTIFICATION
HachCompanycertifiesthisinstrumentwastestedthoroughly,inspected
andfoundtomeetitspublishedspecificationswhenitwasshippedfrom
thefactory.
TheDigesdahlhasbeentestedandiscertifiedasindicatedtothe
followinginstrumentationstandards.
ProductSafety
Per73/23/EECLVD:certifiedcompliantbyHachCompanytoEN61010-
1(IEC1010-1),supportingtestrecordsbyETL.ListedbyETLtoUL
3101-1(Listing#H0492805390).CertifiedbyCSAtoCSAC22.2No.
1010.1(Certification#H0492805390).
Immunity
EN50082-1(EuropeanGenericImmunityStandard)per89/336/EEC
EMC:SupportingtestrecordsbyHachCompany,certifiedcomplianceby
HachCompany.
Standardsinclude:
EN61000-4-2“1995”(IEC801-2)Electro-StaticDischarge
EN61000-4-4“1995”(IEC801-4)ElectricalFastTransients/Burst
EN61000-4-5“1995”(IEC1000-4-5)Surge
EN61000-4-11“1994”(IEC1000-4-11)VoltageDips,
InterruptionsandVariations
ENV50140 “1993”(IEC801-3)RadiatedRFElectro-MagneticFields
ENV50141 “1993”ConductedDisturbancesInducedbyRFFields
ENV50204“1995”RadiatedElectro-MagneticFieldfromDigital
Telephones.
Emissions
EN50081-1(Emissions)per89/336/EECEMC:Supportingtestrecords
byTÜVProductServicesandHachCompany,certifiedcomplianceby
HachCompany.
Standardsinclude:
EN55014(CISPR14)Emissions,ClassBLimits
EN60555-2HarmonicDisturbancesCausedbyElectricalEquipment
EN60555-3VoltageFluctuation(Flicker)DisturbancesCausedby
ElectricalEquipment
iii
CERTIFICATION, continued
CanadianInterference-CausingEquipmentRegulation,IECS-003,
ClassA:
SupportingtestrecordsbyTÜVProductServices,certifiedcompliance
byHachCompany.
ThisClassAdigitalapparatusmeetsallrequirementsoftheCanadian
Interference-CausingEquipmentRegulations.
CetappareilnumériquedelaclasseArespectetouteslesexigencesdu
RèglementsurlematérielbrouilleurduCanada.
FCCPart15,Class"A"Limits:SupportingtestrecordsbyTÜVProduct
Services,certifiedcompliancebyHachCompany.
(1)thisdevicecomplieswithPart15oftheFCCRules.Operationis
subjecttothefollowingtwoconditions:
(2)thisdevicemaynotcauseharmfulinterference,and(2)thisdevice
mustacceptanyinterferencereceived,includinginterferencethatmay
causeundesiredoperation.
Changesormodificationstothisunitnotexpresslyapprovedbytheparty
responsibleforcompliancecouldvoidtheuser'sauthoritytooperatethe
equipment.
Thisequipmenthasbeentestedandfoundtocomplywiththelimitsfora
ClassAdigitaldevice,pursuanttoPart15oftheFCCRules. Theselimits
aredesignedtoprovidereasonableprotectionagainstharmful
interferencewhentheequipmentisoperatedinacommercial
environment.Thisequipmentgenerates,uses,andcanradiateradio
frequencyenergyand,ifnotinstalledandusedinaccordancewiththe
instructionmanual,maycauseharmfulinterferencetoradio
communications.Operationofthisequipmentinaresidentialareais
likelytocauseharmfulinterference,inwhichcasetheuserwillbe
requiredtocorrecttheinterferenceathisownexpense.
Thefollowingtechniquesofreducingtheinterferenceproblemsare
appliedeasily:
1. DisconnectpowerfromtheDigesdahltoverifythatitisthesourceof
theinterference.
2. IftheDigesdahlispluggedintothesameoutletasthedevicewith
whichitisinterfering,tryanotheroutlet.
3. MovetheDigesdahlawayfromthedevicereceivingtheinterference.
4. Repositionthereceivingantennaforthedevicereceiving
theinterference.
5. Trycombinationsoftheabove.
iv
TABLE OF CONTENTS
CERTIFICATION.................................................................................................................... iii
SPECIFICATIONS.................................................................................................................. vii
SAFETYPRECAUTIONS....................................................................................................viii
OPERATION
SECTION1GENERALDESCRIPTION............................................................................ 3
1.1Introduction......................................................................................................................... 3
1.2ScopeofInstructions........................................................................................................... 3
SECTION2PREPARATIONFORUSE.............................................................................. 5
2.1Unpacking........................................................................................................................... 5
2.2Assembly............................................................................................................................. 6
2.2.1HeaterAssembly........................................................................................................ 6
2.2.2FractionatingHeadSystem........................................................................................ 7
2.3SelectingaTemperatureSetting.......................................................................................... 9
SECTION3SAFETY&ENVIRONMENTALCONSIDERATIONS............................. 11
3.1DigesdahlDigestionApparatus......................................................................................... 11
3.2UsingHydrogenPeroxide................................................................................................. 12
3.3UsingSulfuricAcid........................................................................................................... 14
3.4CleanUpofSpillsandLeaks............................................................................................ 14
3.5WasteManagement........................................................................................................... 15
CONSIDERATIONSDESECURITEETD’ENVIRONNEMENT....................................... 16
3.6MinéralisateurDigesdahl.................................................................................................. 16
3.7Utilisationdel’eauoxygénée............................................................................................ 17
3.8Utilisationdel’acidesulfurique........................................................................................ 19
3.9Nettoyagedesdéversementsetfuites................................................................................ 20
SECTION4OPERATION................................................................................................... 21
4.1ApparatusPreparation....................................................................................................... 21
4.2Digestion........................................................................................................................... 21
4.2.1AppropriateSampleSize......................................................................................... 22
4.2.2ProperDigestionSolutionTemperature.................................................................. 22
4.2.3SufficientSulfuricAcid........................................................................................... 22
4.2.4CarbonizationPeriod............................................................................................... 24
4.2.5AdequatePeroxideConcentrationforSufficientTime............................................ 24
4.2.6ContainmentofSample........................................................................................... 25
v
TABLE OF CONTENTS, continued
4.2.7SamplingandStorage.............................................................................................. 25
4.2.8AccuracyCheck...................................................................................................... 25
DIGESTIONPROCEDURES
GENERALDIGESDAHLDIGESTION.............................................................................29
SAMPLETYPEANDSIZE................................................................................................... 35
DIGESTIONPROCEDUREFORAQUEOUSLIQUIDS.................................................39
DIGESTIONPROCEDUREFOROILS.............................................................................53
DIGESTIONPROCEDUREFORSOLIDS.......................................................................67
MAINTENANCE
SECTION5MAINTENANCE............................................................................................ 81
5.1FuseReplacement............................................................................................................. 81
5.2KitReplacementParts...................................................................................................... 81
GENERAL INFORMATION
REPLACEMENTPARTS....................................................................................................... 85
HOWTOORDER.................................................................................................................. 87
REPAIRSERVICE................................................................................................................. 88
WARRANTY.......................................................................................................................... 89
vi
SPECIFICATIONS
TemperatureRange:
Variablefrom100to480(cid:176) C(212to896(cid:176) F)
TemperatureControl:
Within– 15(cid:176) Cofsetpoint*
PowerRequirements:
115and230Vacmodels,50/60Hz,250W**(useonlysinglephase
for230V)
AspiratorCapacity:
11.5L/min(3.0gal/min)atwaterflowrateof6.5L/min(1.7gal/min).
Minimumpressure51.7kPa(7.5psi).Drainrequired.
Dimensions:
14cmx16.5cmx33.6cm(5.5”x6.5”x13.25”).
Totalheight:approximately61cm(24”)whenassembledforuse.
Weight:
Net:3.85kg(8.5lbs)
Shipping:4.8kg(10.6lbs)
OperatingConditions:
15-35(cid:176) C(59-95(cid:176) F);0-85%relativehumidity
*TheDigesdahlapparatusmaybeinfluencedbyelectricfieldradiationof3voltspermeterorgreaterat
frequenciesof100±15MHzand180±15MHz.Thetemperaturespecificationof±15(cid:176) Cwasnotexceededby
morethan10(cid:176) Cattheseradiofrequencies.
**Useonlysinglephasepowerfor230Vmodels.Theover-temperatureprotectiondevicemaynotinterruptpower
whenusingpoly-phasepower.
vii
SAFETY PRECAUTIONS
Notice
Beforeattemptingtounpack,setuporoperatethisinstrument,pleaseread
thisentiremanual.
PayparticularattentiontoSection3!Failuretodosocouldresultin
seriousinjurytotheoperatorordamagetotheequipment.
Thedigestionproceduresinthismanualinvolvetheuseofstrongacid
andoxidizerathightemperatures.Toavoidpersonalinjury,observe
allwarningmessages.
UseofDanger Messages,Cautions and Notes
Danger messages, warnings, cautions and notes used in this manual have
thefollowingsignificance:
DANGER
Indicateseitherapotentiallyorimminentlyhazardoussituationwhich,
ifnotavoided,couldresultindeathorseriousinjury.
CAUTION
Indicateseitherapotentiallyorimminentlyhazardoussituationwhich,
ifnotavoided,couldresultinminorormoderateinjury.
NOTE
Informationthatrequiresspecialemphasis.
PrecautionaryLabels
Pleasepayparticularattentiontolabelsandtagsattachedtotheinstrument.
Personalinjuryordamagetotheinstrumentcouldoccurifnotobserved.
Thissymbol,ifnotedontheinstrument,referencestheInstruction
Manualforoperationaland/orsafetyinformation.
3.1DigesdahlDigestionApparatus
3.2UsingHydrogenPeroxide
3.3UsingSulfuricAcid
3.4CleanUpofSpillsandLeaks
4.2Digestion
viii
OPERATION
DANGER
Handlingchemicalsamples,standards,andreagentscanbedangerous.Reviewthe
necessaryMaterialSafetyDataSheetsandbecomefamiliarwithallsafetyprocedures
beforehandlinganychemicals.
DANGER
Lamanipulationdeséchantillonschimiques,étalonsetréactifspeutêtredangereuse.
Lirelesfichesdedonnéesdesécuritédesproduitsnécessairesetsefamiliariseravec
touteslesprocéduresdesécuritéavantdemanipulertoutproduitchimique.
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