TA Instruments DSC Q Series User manual
RevisionN
IssuedJanuary2007
Q SeriesTM
Getting Started Guide
DSC
Differential Scanning
Calorimeter
DSC Q Series Getting Started Guide
2
©2001–2007byTAInstruments—WatersLLC
109LukensDrive
NewCastle,DE19720
Notices
Thematerialcontainedinthismanual,andintheonlinehelpforthesoftwareusedtosupportthisinstrument,
isbelievedadequatefortheintendeduseoftheinstrument.Iftheinstrumentorproceduresareusedforpurposes
otherthanthosespecifiedherein,confirmationoftheirsuitabilitymustbeobtainedfromTAInstruments.
Otherwise,TAInstrumentsdoesnotguaranteeanyresultsandassumesnoobligationorliability.TAInstruments
alsoreservestherighttorevisethisdocumentandtomakechangeswithoutnotice.
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DSC Q Series Getting Started Guide
3
Important: TA Instruments Manual Supplement
Pleaseclickonthelinksbelowtoaccessimportantinformationsupplementaltothis
GettingStartedGuide:
•TAInstrumentsTrademarks
•TAInstrumentsPatents
•OtherTrademarks
•TAInstrumentsEnd‐UserLicenseAgreement
•TAInstrumentsOffices
DSC Q Series Getting Started Guide
4
Important:TAInstrumentsManualSupplement.......................................................................................... 3
TableofContents................................................................................................................................................. 4
Notes,Cautions,andWarnings........................................................................................................................ 7
RegulatoryCompliance...................................................................................................................................... 8
SafetyStandards........................................................................................................................................... 8
ElectromagneticCompatibilityStandards................................................................................................ 8
Safety..................................................................................................................................................................... 9
InstrumentSymbols..................................................................................................................................... 9
ElectricalSafety............................................................................................................................................. 9
HandlingLiquidNitrogen........................................................................................................................ 10
ThermalSafety............................................................................................................................................ 11
LiftingtheInstrument............................................................................................................................... 11
Chapter1:IntroducingtheDSC................................................................................................................... 13
Overview............................................................................................................................................................ 13
DSCSystemComponents................................................................................................................................14
DSCCell....................................................................................................................................................... 14
CoolingAccessories .................................................................................................................................. 15
FinnedAirCoolingSystem(FACS)................................................................................................. 15
RefrigeratedCoolingSystem(RCS)................................................................................................. 16
QuenchCooler..................................................................................................................................... 17
LiquidNitrogenCoolingSystem(LNCS)....................................................................................... 17
TheDSCQ2000/Q200TouchScreen............................................................................................................... 18
PrimaryFunctionKeys.............................................................................................................................. 18
ControlMenu.............................................................................................................................................. 19
DisplayTouchScreenOptions................................................................................................................. 21
TheDSCQ1000/Q100TouchScreens............................................................................................................. 22
PrimaryFunctionKeys.............................................................................................................................. 22
DSCControlMenuKeys........................................................................................................................... 23
DisplayMenuKeys.................................................................................................................................... 24
DSCAutoQ20/Q20/Q10Keypad.................................................................................................................... 25
OptionsandAccessories.................................................................................................................................. 26
TzeroSampleEncapsulatingPress.......................................................................................................... 26
DSCAutosampler...................................................................................................................................... 26
PhotocalorimeterAccessory(PCA)......................................................................................................... 26
DSCPressureCell...................................................................................................................................... 27
InstrumentSpecifications................................................................................................................................. 28
DSCInstrumentCharacteristics........................................................................................................ 28
Table of Contents
DSC Q Series Getting Started Guide
5
Chapter2:InstallingtheDSC....................................................................................................................... 31
Unpacking/RepackingtheDSC....................................................................................................................... 31
InstallingtheInstrument.................................................................................................................................. 31
InspectingtheSystem................................................................................................................................31
ChoosingaLocation.................................................................................................................................. 32
ConnectingCablesandLines................................................................................................................... 33
Ports...................................................................................................................................................... 33
EthernetSwitchSetup........................................................................................................................ 35
PurgeLines.......................................................................................................................................... 37
CoolingGasLine................................................................................................................................. 38
BasePurgeLine................................................................................................................................... 38
VoltageConfigurationUnit............................................................................................................... 39
PowerSwitch....................................................................................................................................... 40
PowerCable......................................................................................................................................... 40
StartingtheDSC................................................................................................................................................ 40
ShuttingDowntheDSC................................................................................................................................... 41
InstallingtheDSCCoolingAccessories......................................................................................................... 42
InstallingtheFinnedAirCoolingSystem.............................................................................................. 42
InstallingtheQuenchCoolers.................................................................................................................. 43
QuenchCoolAccessoryforFACS.................................................................................................... 43
QuenchCooler..................................................................................................................................... 44
InstallationofAdditionalItems...................................................................................................................... 46
InstallingtheManualLids........................................................................................................................ 46
InstallingtheAutosamplerTrayandDustCover................................................................................. 46
Chapter3:Use,Maintenance,&Diagnostics............................................................................................ 47
UsingtheDSC.................................................................................................................................................... 47
BeforeYouBegin........................................................................................................................................ 47
CalibratingtheDSC.......................................................................................................................................... 48
TzeroTM....................................................................................................................................................... 49
BaselineSlopeandOffsetCalibration..................................................................................................... 49
Enthalpy(Cell)ConstantCalibration...................................................................................................... 50
TemperatureCalibration........................................................................................................................... 50
HeatCapacity(Q2000/Q1000)Calibration............................................................................................. 50
HeatCapacity(MDSC®)Calibration...................................................................................................... 50
PressureCalibration.................................................................................................................................. 51
AutosamplerCalibration.......................................................................................................................... 51
Q2000/Q200/AutoQ20AutosamplerCalibration.......................................................................... 51
Q1000/Q100AutosamplerCalibration............................................................................................ 53
RunningaDSCExperiment............................................................................................................................. 54
ExperimentalProcedure........................................................................................................................... 54
LoadingtheSample................................................................................................................................... 55
StartinganExperiment............................................................................................................................. 55
StoppinganExperiment........................................................................................................................... 56
MaintainingtheInstrument............................................................................................................................. 57
DSC Q Series Getting Started Guide
6
CleaningtheTouchScreen....................................................................................................................... 57
CleaningaContaminatedCell................................................................................................................. 57
CleaningaContaminatedQDSCStandardCell............................................................................. 57
BurningOffContaminationinaDSCCellwithaFACSInstalled.............................................. 58
BurningOffContaminationinaDSCCellwithanRCSorLNCS.............................................. 59
RemovingaDSCQ2000/Q1000Cell............................................................................................................... 60
InstallingaCell........................................................................................................................................... 60
ReplacingFuses................................................................................................................................................. 61
ReplacingtheDSCFuses........................................................................................................................... 61
ReplacementParts............................................................................................................................................. 62
Fuses,Cords,andCables................................................................................................................... 62
DSCCells,Lids,andAccessories...................................................................................................... 62
AutosamplerAccessories................................................................................................................... 63
TzeroSampleEncapsulationPress................................................................................................... 63
DSCSamplePans,Lids,andAccessories........................................................................................ 64
Calibration/ReferenceMaterials....................................................................................................... 65
Index................................................................................................................................................................... 67
DSC Q Series Getting Started Guide
7
Notes, Cautions, and Warnings
ThismanualusesNOTES,CAUTIONS,andWARNINGStoemphasizeimportantandcriticalinstructions.
A NOTE highlights important information about equipment or procedures.
A CAUTION emphasizes a procedure that may damage equipment or cause loss of data
if not followed correctly.
A WARNING indicates a procedure that may be hazardous to the operator or to the
environment if not followed correctly.
DSC Q Series Getting Started Guide
8
Regulatory Compliance
Safety Standards
ForCanada:
CAN/CSA‐22.2No.1010.1‐92Safetyrequirementsforelectricalequipmentformeasurement,control,and
laboratoryuse,Part1:GeneralRequirements+Amendments.
CAN/CSA‐22.2No.1010.2.010‐94Particularrequirementsforlaboratoryequipmentfortheheatingofmaterials
+Amendments.
FortheEuropeanEconomicArea:(InaccordancewithCouncilDirective73/23/EECof19February1973onthe
harmonizationofthelawsofMemberStatesrelatingtoelectricalequipmentdesignedforusewithincertain
voltagelimits.)
EN61010‐1:1993Safetyrequirementsforelectricalequipmentformeasurement,control,andlaboratoryuse,
Part1:GeneralRequirements+Amendments.
EN61010‐2‐010:1994Particularrequirementsforlaboratoryequipmentfortheheatingofmaterials+Amend‐
ments.
FortheUnitedStates:
UL61010A‐1ElectricalEquipmentforLaboratoryUse;Part1:GeneralRequirements.
IEC1010‐2‐010:1992Particularrequirementsforlaboratoryequipmentfortheheatingofmaterials+Amend‐
ments.
Electromagnetic Compatibility Standards
ForAustraliaandNewZealand:
AS/NZS2064:1997Limitsandmethodsofmeasurementofelectronicdisturbancecharacteristicsofindustrial,
scientificandmedical(ISM)radiofrequencyequipment.
ForCanada:
ICES‐001Issue3March7,1998Interference‐CausingEquipmentStandard:Industrial,Scientific,andMedical
RadioFrequencyGenerators.
FortheEuropeanEconomicArea:(InaccordancewithCouncilDirective89/336/EECof3May1989onthe
approximationofthelawsoftheMemberStatesrelatingtoelectromagneticcompatibility.)
EN61326‐1:1997Electricalequipmentformeasurement,control,andlaboratoryuse‐EMCrequirements‐Part1:
GeneralRequirements+Amendments.Emissions:MeetsClassArequirements(Table3).Immunity:Meets
performancecriteriaAfornon‐continuousoperation.
FortheUnitedStates:
CFRTitle47TelecommunicationChapterIFederalCommunicationsCommission,Part15Radiofrequency
devices(FCCregulationpertainingtoradiofrequencyemissions).
DSC Q Series Getting Started Guide
9
Safety
CAUTION: The operator of this instrument is advised that if the equipment is used in a
manner not specified in this manual, the protection provided by the equipment may be
impaired.
Instrument Symbols
ThefollowinglabelsaredisplayedontheDSCinstrumentforyourprotection:
Symbol Explanation
Indicatesthatahotsurfacemaybepresent.Takecarenottotouchthisareaorallow
anymaterialthatmaymeltorburncomeincontactwiththishotsurface.
Thissymbolontherearaccesspanelindicatesthatyoumustunplugtheinstrument
beforedoinganymaintenanceorrepairwork;voltagesexceeding120/240Vacarepresent
inthissystem.
Ifyouarenottrainedinelectricalprocedures,donotremovethecabinetcoversunless
specificallyinstructedtodosointhemanual.Maintenanceandrepairofinternalparts
mustbeperformedonlybyTAInstrumentsorotherqualifiedservicepersonnel.
Pleaseheedthewarninglabelsandtakethenecessaryprecautionswhendealingwiththosepartsofthe
instrument.TheDSCGettingStartedGuidecontainscautionsandwarningsthatmustbefollowedforyourown
safety.
Electrical Safety
CAUTION: The hold-down thumbscrews that hold the DSC Q2000/Q1000 cell in place
ensures proper lid alignment and electrical connections. You cannot run experiments
withoutthem. Iftheyarenotfullyin place,theinstrumentmaynotbe ableto applypower
to the cell and will not operate.
Youmustunplugtheinstrumentbeforedoinganymaintenanceorrepairwork;voltagesashighas120/240Vac
arepresentinthissystem.
WARNING: High voltages are present in this instrument. Maintenance and repair of
internal parts must be performed only by TA Instruments or other qualified service
personnel.
DSC Q Series Getting Started Guide
10
CAUTION: Drying out the DSC cell may be needed, if it has been exposed to humid
conditions. It is important to be certain that the instrument ground is adequately
connected to the facilities ground for safe operation.
Run the "Cell/Cooler Conditioning" test template to dry out the cell:
1 Ramp at 10°C/min to 400°C
2 Isothermal for 120 min.
Handling Liquid Nitrogen
Someofthecoolingaccessoriesusethecryogenic(low‐temperature)agent,liquidnitrogen,forcooling.Because
ofitslowtemperature[‐195°C(‐319°F)],liquidnitrogenwillburntheskin.Whenyouworkwithliquidnitrogen,
usethefollowingprecautions:
WARNING: Liquid nitrogenboils rapidlywhenexposed toroomtemperature. Be certain
that areas where liquid nitrogen is used are well ventilated to prevent displacement of
oxygen in the air.
1. Weargogglesorafaceshield,gloveslargeenoughtoberemovedeasily,andarubberapron.Forextra
protection,wearhigh‐topped,sturdyshoes,andleaveyourpantlegsoutsidethetops.
2. Transfertheliquidslowlytopreventthermalshocktotheequipment.Usecontainersthathavesatisfactory
low‐temperatureproperties.Ensurethatclosedcontainershaveventstorelievepressure.
3. Thepurityofliquidnitrogendecreaseswhenexposedtoair.Iftheliquidinacontainerhasbeenopento
theatmosphereforaprolongedperiod,analyzetheremainingliquidbeforeusingitforanypurposewhere
highoxygencontentcouldbedangerous.
WARNING:
Potential Asphyxiant
Liquid nitrogen can cause rapid suffocation without warning.
Store and use in an area with adequate ventilation.
Do not vent the Liquid Nitrogen Cooling System (LNCS) container in confined
spaces.
Do not enter confined spaces where high concentrations of nitrogen gas may be
present unless the area is well ventilated.
Thewarningaboveappliestotheuseofliquidnitrogen.Oxygendepletionsensorsaresometimesutilizedwhere
liquidnitrogenisinuse.
DSC Q Series Getting Started Guide
11
Thermal Safety
Thecellsurfacescanbehotenoughtoburntheskinduringasamplerun.Ifyouareconductingasubambient
testontheDSC,coldcouldalsocauseinjury.Afterrunninganytypeofexperiment,youmustallowtheDSC
celltoreturntoroomtemperaturebeforeyoutouchtheinnercellsurfaces.
Lifting the Instrument
TheDSCisafairlyheavyinstrument.Inordertoavoidinjury,particularlytotheback,pleasefollowthisadvice:
WARNING: Use two people to lift and/or carry the instrument. The instrument is too
heavy for one person to handle safely.
DSC Q Series Getting Started Guide
12
DSC Q Series Getting Started Guide
13
Overview
TheDifferentialScanningCalorimeter(DSC)determinesthe tem-
perature and heat flow associated with material transitions as a
function of time and temperature. It also provides quantitative
and qualitative data on endothermic (heat absorption) and exo-
thermic (heat evolution) processes of materials during physical
transitions that are caused by phase changes, melting, oxidation,
and other heat-related changes. This information helps the sci-
entist or engineer identify processing and end-use performance.
The DSC instrument works in conjunction with a controller and
associated software to make up a thermal analysis system.
Your controller is a computer that performs the following func-
tions:
• Provides an interface between you and the analysis
instruments
• Enables you to set up experiments and enter constants
•Storesexperimentaldata
• Runs data analysis programs.
NOTE: For technical reference information, theory of operation, and other information associ-
ated with the DSC and not found in this manual, see the online help associated with the
instrument control software.
DSCwithAutosampler andFinnedAir
Cooling System
Chapter 1
Introducing the DSC
DSC Q Series Getting Started Guide
14
DSC System Components
A functional DSC system has three major components: the instrument itself, which contains the system
electronics;the cell,whichmonitorsdifferentialheat flow andtemperature;andacooling accessory. Thecooling
accessory selected depends on the temperature range desired for your experiments.
DSC Cell
In a "heat flux" DSC, the sample material, encapsulated in a pan, and
an empty reference pan sit on a thermoelectric disk surrounded by a
furnace. As the temperature of the furnace is changed (usually by
heating at a linear rate), heat is transferred to the sample and reference
throughthethermoelectricdisk.Thedifferentialheatflowtothesample
and reference is measured by area thermocouples using the thermal
equivalent of Ohm's Law.
Thissimplerelationship, however, does not take into accountextraneousheat flow withinthesensororbetween
the sensor and sample pan. The TA Instruments Q Series DSC's are specifically designed to account for those
latter heat flows.
The cell sensor consists of a constantan body with separate raised platforms to hold the sample and reference.
The platforms are connected to the heating block (base) by thin-walled tubes that create thermal resistances
between the platforms and the base. Area detectors (thermocouples) on the underside of each platform measure
the temperature of the sample and reference. A third thermocouple measures the temperature at the base. The
equation below shows the thermal network model which represents this cell arrangement, and the resultant
heat flow expression that describes this cell arrangement (designated the To [TzeroTM] cell) is
The first term in this expression is the equivalent of the conventional single-term DSC heat flow expression. The
second and third terms account for differences between the sample and reference resistances and capacitances
DSC Q Series Getting Started Guide
15
respectively. These terms have their largest impact during regions of the thermal curve where the heat capacity
of the sample is the predominant contributor to heat flow. The fourth term accounts for the difference in heating
rate between the sample and reference. This term has its largest impact during enthalpic events (e.g., melting).
This equation can be further modified to account for pan heat flow effects.
TA Instruments supplies the following Q Series DSC's.
• The Q20, Q10, and Auto Q20 instruments provide conventional (single-term) heat flow (commonly
designated as "T1 heat flow") only.
• The Q200 and Q100 provide not only the single-term (T1) heat flow, but also the expanded four-term heat
flow (designated as "T4 heat flow"), which accounts for the cell resistances and capacitances.
• The Q2000 and Q1000 provide T1 and T4 heat flows, as well as a third heat flow (designated as "T4P heat
flow"), which accounts for pan effects.
Cooling Accessories
The DSC operates in conjunction with one of the cooling accessories listed below. Your choice of cooling
accessories depends on the temperature range that you wishto use for your experiments. To install the cooling
accessories, see Chapter 2. For proper operation, the correct cooler type must be selected through the
instrument control software, see the online documentation for details.
Finned Air Cooling System (FACS)
The Finned Air Cooling System (FACS), allows operation from ambient to
725°C, using flowing air as the coolant. For installation instructions see
Chapter 2. You can use the optional quench cool accessory with the FACS
(see next section) if you want to return the temperature of the cell to ambient
more quickly. This cooler is not intended for use at temperatures below
ambient due to the potential for frost formation in the cell.
Quench Cool Accessory for FACS
This accessory is placed inside the FACS and has a reservoir
into which you can place coolant to return the cell to ambient
more quickly. The rate of temperature drop depends on the
coolant used (ice and water, dry ice, or liquid nitrogen).
NOTE: When using the FACS quench cool
accessory make sure that the cooling acces-
sory identified in the instrument control pro-
gramistheFACSandnottheQuenchCooler.
If the wrong cooler is identified your results
will be inaccurate.
Quench Cool
Accessory for FACS
Quench Cooler
Finned Air
Cooling System
DSC Q Series Getting Started Guide
16
Refrigerated Cooling System (RCS)
The Refrigerated Cooling Systems (RCS) are used to perform DSC cooling experiments. There are two different
models offered by TA Instruments—the RCS 90 and the RCS 40. Both models have a cooling head, which is
made up of an internal heat exchanger, anti-condensate heaters, and various other components. The cooling
head fits over the DSC cell.
CAUTION: The RCS coolers are not compatible with the accessory outlets on the back
of the instrument due to power requirements.
• The RCS 90 (shown in the figure to the right)
consists of a two-stage, cascade, vapor
compression refrigeration system with an
attachedcoolinghead. Seethefiguretotheright.
TheRCS90canbeusedforexperimentsrequiring
cooling within an operating range of -90°C to
550°C. Themaximumrate of cooling dependson
the temperature range of your experiment.
• The RCS 40 (shown in the figure below) consists
ofa single-stagevaporcompressionrefrigeration
system with an attached cooling head. See the
figure below. The RCS 40 can be used for
experiments requiring cooling within an
operatingrangeof-40°Cto400°C. Themaximum
rateof coolingdependsonthetemperaturerange
of your experiment.
CAUTION: We recommend that you do not use the RCS when running isothermal
experiments above 400°C. Damage to the unit can occur if used at high temperatures
for extended periods.
RCS 90 with DSC Q1000
DSC Q Series Getting Started Guide
17
Quench Cooler
The Quench Cooler is designed for rapidly cooling the DSC cell to a lower temperature before
initiating programmed heating experiments. The DSC Quench Cooler fits over the standard
DSC cell and has a reservoir into which you can place coolant to coolthe cell. The temperature
when using the Quench Cooler is –180 to 550°C. The actual range depends on the coolant (ice
and water, dry ice, or liquid nitrogen).
Before you initiate a heating experiment, you will need to remove the Quench Cooler and put
the enclosure lid back in place.
If the Quench Cooler is used for temperatures
below–100°C,thenheliummustbeusedasthe
purge gas.
NOTE: The Quench Cooler cannot be used to
perform a Tzero calibration of the DSC.
Therefore, only T1 heat flow is available when
using the Quench Cooler.
NOTE: The Quench Cooler requires manual
lids and therefore cannot be used with the
Autosampler. The AutoLid is disabled
("parked") during Quench Cooler operation.
Liquid Nitrogen Cooling System (LNCS)
The LNCS (Liquid Nitrogen Cooling System) is a universal
coolingaccessoryforusewith TA InstrumentsAnalyzers.It
can be used with all DSC Q Series models.
The Liquid Nitrogen Cooling System (LNCS) allows auto-
matic and continuous temperature control within the range
of–180°C to 550°C. The LNCS tank ispressurizedto deliver
theliquidnitrogentotheheatexchanger,whichinturncools
the cell.
TheLNCS(shownhere) can be autofilled in yourlaboratory
using the DSC touch screen or through the instrument con-
trol software. This requires a low pressure 170 kPa gauge
maximum (25 psig) bulk storage tank to be located within
1.8m(6feet)oftheLNCS. SeetheLNCSGettingStartedGuide
for further information.
Stand-Alone
Quench
Cooler
Q10 Stand-Alone
Quench Cooler
Quench Cooler
Thermal Enclosure
DSC Q Series Getting Started Guide
18
The DSC Q2000/Q200 Touch Screen
The DSC Q2000 and Q200 instruments have a built-
in integrated display and keypad in the form of a
touch screen for local operator control. The func-
tions on the screen change depending upon the
menu you are using. This section briefly describes
the basic layout of these functions.
The status line along the top of the display shows
the current instrument status, run selection, and
temperature.
At the bottom of the screen is a set of keys that are
used for the primary instrument functions. See the
table below for a description of each key.
The functions in the middle of the touch screen will
vary depending on the screen displayed.
Primary Function Keys
Use the following keys for the main functions of the instrument.
Key Name Description
Start Begins the experiment. This is the same function as Start on the
instrument control software. Start automatically loads the sample
pan and closes the furnace, if necessary, before beginning the
experiment.
Stop If an experiment is running, this key ends the method normally,
asthoughithadruntocompletion;i.e.,themethod-endconditions
go into effect and the data that has been generated is saved. This
is the same function as Stop on the instrument control software.
If an experiment is not running (the instrument is in a standby or
method-end state), the Stop key will halt any activity (air cool, all
mechanical motion, etc.).
If an Autosampler sequence is in progress, Stop will halt the
sequence.
Control Displays a list of thecontrolcommandfunctions.Theseareused to
control the instrument actions such as furnace movement, sample
loading/unloading,taring,etc.Itemscanbeselectedfromtheicons
or from the drop-down menu. Select Apply to initiate the com-
mand. See the next page for more details on this screen.
(table continued)
Q2000/Q200 Display
DSC Q Series Getting Started Guide
19
Display Accesses the display screen, which displays the signals from the
instrumentsuchassignaldisplay,real-timeplot,instrumentinfor-
mation, etc.
Calibrate Displays the calibration functions available for this instrument.
Functions such as Autosampler and touch screen calibration can
be accessed using this key.
Control Menu
The Control Menu (see the fig-
ure to the right) is accessed by
touchingtheControlkeyatthe
bottom of the touch screen. A
briefdescriptionofeachcontrol
command is provided in the
table below.
NOTE: Most
of the com-
mandsshown
are not avail-
ableduringan
active experi-
ment.
Select the desired function either from the drop-down list of Control Commands or by pressing the icon. Then
press Apply to initiate the action.
Control Command Description
LID OPEN/CLOSED Toggles between opening and closing the AutoLid on the cell.
RESET Clears all commands, instructs the unit to locate all home
AUTOSAMPLER positions, and returns the Autosampler to the park position. Also
instructs the Autosampler to "forget" the current lid and sample
pan locations.
UNLOAD UnloadsthepanfromthecelltotheAutosamplertrayorwastebin.
LOAD Loads the selected pan from the Autosampler tray to the cell.
(table continued)
Lid Open/Closed
Air Cool
Switch Gas
Reset Autosampler
Load
Unload
Q2000/Q200 Control Menu
DSC Q Series Getting Started Guide
20
Control Command Description
UNLOAD REFERENCE Unloads the reference pan from the cell to the Autosampler tray
or waste bin.
SWITCH GAS Toggles between purge Gas #1 and Gas #2.
AIR COOL Toggles the air cool function on or off. This is the same function
as Air Cool on the instrument control software.
PARK AUTOSAMPLER Sends the autosampler tray to the park position, which is set off
to the right and below the home position.
GO TO STANDBY When using an RCS or LNCS, this option will cool to the
TEMPERATURE standbytemperatureselectedintheinstrumentcontrolprogram.
LNCS Automatically fills the LNCS with liquid nitrogen from the
holding tank when an experiment is not in progress.
RCS Toggles theRCS(RefrigeratedCoolingSystem) between on and
off, depending on the state of the RCS when you press the key.
RESET SAVED PARAMETERS Resets the saved instrument parameters and resets the instru-
ment.
SHUTDOWN Shuts down and resets the instrument.
This manual suits for next models
6
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