Teledyne Oxygen Equipment 3300TB User Manual

OPERATING INSTRUCTIONS FOR  
Model 3300TB  
Trace Oxygen Analyzer  
DANGER  
HIGHLY TOXIC AND OR FLAMMABLE LIQUIDS OR GASES MAY BE PRESENT IN THIS MONITORING  
SYSTEM.  
PERSONAL PROTECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS SYSTEM.  
HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PERSIST  
FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED.  
P/NM70362  
06/22/00  
ECO#00-0228  
ONLYAUTHORIZEDPERSONNELSHOULDCONDUCTMAINTENANCEAND/ORSERVICING. BEFORE  
CONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED SUPERVISOR/  
MANAGER.  
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Contents  
Introduction  
1.1 Overview........................................................................ 1-1  
1.2 Main Features of the Analyzer ....................................... 1-1  
1.3 Front Panel Description.................................................. 1-2  
1.4 Rear Panel Description .................................................. 1-3  
OperationalTheory  
2.1 Introduction .................................................................... 2-1  
2.2 Micro-Fuel Cell Sensor .................................................. 2-1  
2.2.1 Principles of Operation .......................................... 2-1  
2.2.2 Anatomy of a Micro-Fuel Cell................................. 2-2  
2.2.3 Electrochemical Reactions .................................... 2-3  
2.2.4 The Effect of Pressure............................................ 2-3  
2.2.5 Calibration Characteristics ...................................... 2-4  
2.3 Electronics ..................................................................... 2-5  
2.3.1 General .................................................................. 2-5  
2.3.2 Signal Processing.................................................. 2-5  
Installation  
3.1 Unpacking the Analyzer................................................. 3-1  
3.2 Location and Mounting .................................................. 3-2  
3.2.1 Control Unit Installation.......................................... 3-2  
3.2.2 External Probe Installation ..................................... 3-2  
3.2.3 Installing the Micro-Fuel Cell ................................. 3-2  
3.3 Electrical Connections ................................................... 3-3  
3.4 Gas Connections ........................................................... 3-6  
3.5 Installation Checklist ...................................................... 3-6  
Operation  
4.1 Introduction .................................................................... 4-1  
4.2 Using the Function and Data Entry Buttons ................... 4-2  
4.3 Setting the Analysis Ranges.......................................... 4-2  
4.3.1 HI Range ............................................................... 4-2  
4.3.2 LO Range .............................................................. 4-3  
4.4 Setting the Alarm Setpoints............................................ 4-3  
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4.4.1 Alarm 1 .................................................................. 4-3  
4.4.2 Alarm 2 .................................................................. 4-3  
4.4.3 Sensor Fail Alarm .................................................. 4-4  
4.5 Selecting a Fixed Range or Autoranging ....................... 4-4  
4.6 Calibration ..................................................................... 4-4  
Maintenance  
5.1 Replacing the Fuse........................................................ 5-1  
5.2 Sensor Installation or Replacement ............................... 5-2  
5.2.1 When to Replace a Sensor .................................... 5-2  
5.2.2 Ordering and Handling of Spare Sensors .............. 5-3  
5.2.3 Removing the Micro-Fuel Cell ............................... 5-3  
5.2.4 Installing a Micro-Fuel Cell .................................... 5-3  
5.2.5 Cell Warranty Conditions ....................................... 5-4  
Appendix  
A.1 Specifications ................................................................ A-1  
A.2 Spare Parts List ............................................................. A-2  
A.3 Reference Drawing ........................................................ A-3  
A.4 Miscellaneous................................................................ A-3  
A.5 Material Safety Data Sheet ............................................ A-3  
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Model 3300TB complies with all of the requirements of the  
Commonwealth of Europe (CE) for Radio Frequency Interference,  
Electromagnetic Interference (RFI/EMI), and Low Voltage Directive  
(LVD).  
The following International Symbols are used throughout the Instruc-  
tion Manual for your visual and immediate warnings and when you  
have to attend CAUTION while operating the instrument:  
STAND-BY, Instrument is on Stand-by,  
but circuit is active  
GROUND  
Protective Earth  
CAUTION, The operator needs to refer to the manual  
for further information. Failure to do so may  
compromise the safe operation of the equipment.  
CAUTION, Risk of Electric Shock  
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DANGER  
COMBUSTIBLE GAS USAGE WARNING  
This is a general purpose instrument, the Control Unit is de-  
signed for usage in a nonhazardous area. It is the customer's  
responsibility to ensure safety especially when combustible  
gases are being analyzed since the potential of gas leaks al-  
ways exist.  
The customer should ensure that the principles of operating of  
this equipment is well understood by the user. Misuse of this  
product in any manner, tampering with its components, or unau-  
thorized substitution of any component may adversely affect  
the safety of this instrument.  
Since the use of this instrument is beyond the control of  
Teledyne, no responsibility byTeledyne, its affiliates, and agents  
for damage or injury from misuse or neglect of this equipment is  
implied or assumed.  
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Trace Oxygen Analyzer  
Introduction 1  
Introduction  
1.1 Overview  
TheTeledyneElectronicTechnologiesAnalyticalInstruments(TET/AI)  
Model3300TBisamicroprocessor-basedtraceoxygenanalyzerforreal-time  
measurementofthepartspermillionofoxygenininertgases,orinawidevariety  
ofgasmixtures.Itfeaturessimpleoperation,fastresponse,andacompact,  
ruggedconstruction.TypicalapplicationsoftheModel3300TBaremonitoring  
nitrogengeneratorsandinertgasblanketingapplications.  
1.2 Main Features of the Analyzer  
Themainfeaturesoftheanalyzerinclude:  
Highresolution,accuratereadingsofoxygencontentfrom0-10ppm  
through9999ppm Large,bright,LEDmeterreadout.  
Simplepushbuttoncontrols.  
Nyloncellholder.  
AdvancedMicro-FuelCell,fortraceanalysis,hassixmonths  
warrantyandanexpectedlifetimeofeightmonths.  
Unaffectedbyoxidizablegases.  
Fastresponseandrecoverytime.  
Microprocessorbasedelectronics:8-bitCMOSmicroprocessor  
with on-board RAM and 16 KB ROM.  
Twouserselectableranges(from0-10 ppmthrough0-9999 ppm)  
allowbestmatchtousersprocessandequipment.  
OperatorcanselectAutoranging,whichallowstheanalyzerto  
automaticallyselecttheproperpresetrangefor agiven  
measurement,orhecanlocktheanalyzerontoasinglerange.  
Twoconcentrationalarmswithadjustablesetpoints.  
Panelmountflowmeter.  
ControlvalvefortheselectionofSpangasorSamplegas.  
Sensorfailurealarm.  
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1 Introduction  
Model 3300TB  
Threeanalogoutputs:twoformeasurement(0–10V dc,and  
negativeground4–20mA dc)andoneforrangeidentification  
(0-10 V dc).  
CompactandruggedControlUnit,wallmountedNEMA-4rated  
enclosure.  
RS-232SerialDigitalportforoutputof concentrationanddatatoa  
computerterminals,orotherdigitaldevices.  
ASampleflowcontrolvalve.  
1.3 Front Panel Description  
Allcontrolsexceptthepowerswitchareaccessiblefromthedoorandgas  
panel.SeeFigure1-1.Thefrontpanelhassevenpushbuttonmembrane  
switches,adigitalmeter,andanalarmindicatorLEDforoperatingtheanalyzer.  
ThesefeaturesaredescribedbrieflyhereandingreaterdetailinChapter4,  
Operation.  
Figure 1-1: Front Panel  
FunctionKeys:Sevenpushbuttonmembraneswitchesareusedtoselect  
thefunctionperformedbytheanalyzer:  
Set Alarm 1  
Set Alarm 2  
SetAlarm1HiorLow,andtheconcentrationat  
whichalarm1activates.  
Set the Alarm 2 Hi or Low, and the  
concentrationtowhichalarm2activates.  
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Trace Oxygen Analyzer  
Introduction 1  
Set HI Range  
Setthehighanalysisrangefortheinstrument(up  
to 0-9999ppm).  
Set LO Range  
Setthelowanalysisrangefortheinstrument  
(downto0-10ppm).  
Span  
Spancalibratetheanalyzer.  
DataEntryKeys:Twopushbuttonmembraneswitchesareusedto  
manuallychangemeasurementparametersoftheinstrumentastheyaredisplayed  
ontheLEDmeterreadout:  
UpArrow  
Incrementvaluesofparametersupwardsasthey  
aredisplayedontheLEDreadout.  
DownArrow  
Incrementvaluesofparametersdownwardsas  
theyaredisplayedontheLEDreadout.  
Digital LED Readout: ThedigitaldisplayisaLEDdevicethat  
produceslarge,bright,7-segmentnumbersthatarelegibleinanylighting  
environment.Ithastwofunctions:  
MeterReadout: Asthemeterreadout,itdisplaystheoxygen  
concentrationcurrentlybeingmeasured.  
MeasurementParametersReadout: Italsodisplaysuser-  
definablealarmsetpoints,ranges,andspancalibrationpointwhen  
theyarebeingcheckedorchanged.  
1.4 Rear Panel Description  
Therearpanelcontainstheelectricalinputandoutputconnectors. The  
connectorsaredescribedbrieflyhereandindetailintheInstallationchapterof  
thismanual.  
Figure 1-2 Rear Panel  
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1 Introduction  
Model 3300TB  
PowerConnection  
AC version: 100–240 VAC, at 50/60Hz.  
Theconnectorhousingincludesthefuse  
holderandthepowerswitch.  
FuseHolder:Replacingthefuseis  
describedinChapter5,Maintenance.  
I/OPowerSwitch:Turnstheinstrument  
power ON (1) or OFF (0).  
AnalogOutputs  
0–10 V dcconcentrationoutput.  
0–10 V dcrangeID(oroptionaloverrange)  
output.  
4–20 mA dcconcentrationoutput,negative  
ground.  
AlarmConnections Alarm1,Alarm2,andSensorFailureAlarm  
connections.  
SensorConnector  
RS-232Port  
InternalSamplingSystem,Sensor  
Connector.  
SerialDigitalOutputofconcentrationand  
rangesignals.  
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Trace Oxygen Analyzer  
Operational Theory 2  
Operational Theory  
2.1 Introduction  
Theanalyzeriscomposedoftwosubsystems:  
1. AnalysisUnitwithMicro-FuelCellSensor  
2. ControlUnitwithSignalProcessing,DisplayandControls  
TheAnalysisUnitisdesignedtoacceptthesamplegasanddirectittothe  
sensitivesurfaceoftheMicro-FuelCellsensor.TheMicro-FuelCellisan  
electrochemicalgalvanicdevicethattranslatestheamountofoxygenpresentin  
thesampleintoanelectricalcurrent.  
TheControlUnitprocessesthesensoroutputandtranslatesitintoelectrical  
concentration,range,andalarmoutputs,andapercentoxygenmeterreadout.It  
containsamicrocontrollerthatmanagesallsignalprocessing,input/output,and  
displayfunctionsfortheanalyzer.  
2.2 Micro-Fuel Cell Sensor  
2.2.1 Principles of Operation  
TheoxygensensorusedintheModel3300TBisaMicro-FuelCellde-  
signedandmanufacturedbyTAI.Itisasealed,disposableelectrochemical  
transducer.  
TheactivecomponentsoftheMicro-FuelCellareacathode,ananode,  
andtheaqueousKOHelectrolyteinwhichtheyareimmersed.Thecellconverts  
theenergyfromachemicalreactionintoanelectricalpotentialthatcanproducea  
currentinanexternalelectricalcircuit.Itsactionissimilartothatofabattery.  
Thereis,however,animportantdifferenceintheoperationofabatteryas  
comparedtotheMicro-FuelCell:Inthebattery,allreactantsarestoredwithin  
thecell,whereasintheMicro-FuelCell,oneofthereactants(oxygen)comes  
fromoutsidethedeviceasaconstituentofthesamplegasbeinganalyzed.The  
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2 Operational Theory  
Model 3300TB  
Micro-FuelCellisthereforeahybridbetweenabatteryandatruefuelcell.(All  
ofthereactantsarestoredexternallyinatruefuelcell.)  
2.2.2 Anatomy of a Micro-Fuel Cell  
TheMicro-FuelCellismadeofextremelyinertplastic(whichcanbe  
placedconfidentlyinpracticallyanyenvironmentorsamplestream).Itiseffec-  
tivelysealed,thoughoneendispermeabletooxygeninthesamplegas.Atthe  
permeableendascreenretainsadiffusionmembranethroughwhichtheoxygen  
passesintothecell.Attheotherendofthecellisaconnectorandtemperature  
compensationnetwork(restrictorsandthermistor)onaprintedcircuitboard.  
RefertoFigure2-1, BasicElementsofaMicro-FuelCell, whichillus-  
tratesthefollowinginternaldescription.  
Electrical C onnector  
Circuit Board  
with tem perature com pensation network.  
Anode  
Cathode  
Teflon M embrane  
Screen  
Clam p  
Figure 2-1. Basic Elements of a Micro-Fuel Cell (not to scale)  
Atthesensingendofthecellisadiffusionmembrane,whosethicknessis  
veryaccuratelycontrolled.Nearthediffusionmembraneliestheoxygensensing  
element—thecathode.  
Theanodestructureislargerthanthecathode.Itismadeofleadandis  
designedtomaximizetheamountofmetalavailableforchemicalreaction.  
Thespacebetweentheactiveelementsisfilledbyastructuresaturatedwith  
electrolyte.Cathodeandanodearewetbythiscommonpool.Theyeachhavea  
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Trace Oxygen Analyzer  
Operational Theory 2  
conductorconnectingthem,throughsomeelectricalcircuitry,tooneofthe  
externalcontactsintheconnectorreceptacle,whichisonthetopofthecell.  
2.2.3 Electrochemical Reactions  
ThesamplegasdiffusesthroughtheTeflonmembrane.Anyoxygeninthe  
samplegasisreducedonthesurfaceofthecathodebythefollowingHALF  
REACTION:  
O2 + 2H2O + 4e4OH–  
(cathode)  
(Fourelectronscombinewithoneoxygenmolecule—inthepresenceof  
waterfromtheelectrolyte—toproducefourhydroxylions.)  
Whentheoxygenisreducedatthecathode,leadissimultaneouslyoxidized  
attheanodebythefollowingHALFREACTION:  
2(Pb + 2OH) → 2(Pb+2 + H2O) + 4e–  
(anode)  
(Twoelectronsaretransferredforeachatomofleadthatisoxidized.TWO  
ANODEREACTIONSbalanceonecathodereactiontotransferfourelec-  
trons.)  
Theelectronsreleasedatthesurfaceoftheanodeflowtothecathode  
surfacewhenanexternalelectricalpathisprovided.Thecurrentisproportional  
totheamountofoxygenreachingthecathode.Itismeasuredandusedto  
determinetheoxygenconcentrationinthegasmixture.  
TheoverallreactionforthefuelcellistheSUMofthehalfreactionsabove,  
or:  
2Pb + O2 2PbO  
(Thesereactionswillholdaslongasnogaseouscomponentscapableof  
oxidizingleadarepresentinthesample. Theonlylikelycomponentsarethe  
halogens—iodine,bromine,chlorineandfluorine.)  
Theoutputofthefuelcellislimitedby(1)theamountofoxygeninthecell  
atthetimeand(2)theamountofstoredanodematerial.  
Intheabsenceofoxygen,nocurrentisgenerated.  
2.2.4 The Effect of Pressure  
Inordertostatetheamountofoxygenpresentinthesampleasapercent-  
ageofthegasmixture,itisnecessarythatthesamplediffuseintothecellunder  
constantpressure.  
Ifthepressurechanges,theratethatoxygenreachesthecathodethrough  
thediffusingmembranewillalsoincrease.Theelectrontransfer,andthereforethe  
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2 Operational Theory  
Model 3300TB  
externalcurrent,willincrease,eventhoughtheproportionofoxygenhasnot  
changed.  
Fortunately,Dalton'sLawconfirmsthateverygasinamixturecontributes  
thesamepressuretothemixturethatitwouldexertifitwerealoneinthesame  
amountinthatsamevolume.Thismeansthataslongasthetotalpressureofthe  
sampleremainsconstant,themixturecanchange,butthediffusionoftheoxygen  
willbeaffectedonlybytheconcentrationoftheoxygen.  
Forthisreason,thesamplesystemsupplyingsamplegastothecellshould  
bedesignedtokeepthepressureonthediffusionmembraneconstant.  
2.2.5 Calibration Characteristics  
GiventhatthetotalpressureofthesamplegasatthesurfaceoftheMicro-  
FuelCellinputisconstant,aconvenientcharacteristicofthecellisthatthe  
currentproducedinanexternalcircuitofconstantimpedanceisdirectlypropor-  
tionaltotherateatwhichoxygenmoleculesreachthecathode,andthisrateis  
directlyproportionaltotheconcentrationofoxygeninthegaseousmixture.In  
otherwordsithasalinearcharacteristiccurve,asshowninFigure2-2.Measur-  
ingcircuitsdonothavetocompensatefornonlinearities.  
Figure 2-2. Characteristic Input/Output Curve for a Micro-Fuel Cell  
Inaddition,sincethereiszerooutputintheabsenceoxygen,thecharacter-  
isticcurvehasanabsolutezero.Thecellitselfdoesnotneedtobezeroed.  
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Trace Oxygen Analyzer  
Operational Theory 2  
2.3 Electronics  
2.3.1 General  
ThesignalprocessingusesanIntel microcontrollerwithon-boardRAM  
andROMtocontrolallsignalprocessing,input/output,anddisplayfunctionsfor  
theanalyzer.Systempowerissuppliedfromauniversalpowersupplymodule  
designedtobecompatiblewithmostinternationalpowersources.  
ThepowersupplycircuitryisonthePowerSupplyPCB,whichismounted  
vertically,justbehindtherearpaneloftheControlUnit.  
Thesignalprocessingelectronicsincludingthesensoramplifier,  
microcontroller,analogtodigital,anddigitaltoanalogconvertersarelocatedon  
theMainPCB,whichismountedvertically,justbehindthefrontpanelofthe  
ControlUnit.  
2.3.2 Signal Processing  
Figure2-3isablockdiagramofthesignalprocessingelectronicsdescribed  
below.  
Millivolt  
Potput  
TEMPERATURE  
COMPENSATION  
NETWORK ON  
SENSOR PCB  
SENSOR  
AMPLIFIER  
MFC  
A D C  
E–I CONV  
4–20 mA dc  
Microamp  
Output  
Concentration  
0–10 V dc  
RANGE ID  
B-2C Sensor  
D A C  
MICRO-  
CONTROL-  
LER  
KEYBOARD  
DISPLAY  
RELAYS  
RELAYS  
ALARMS  
ALARMS  
Figure 2-3: Block Diagram of the Signal Processing Electronics  
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2 Operational Theory  
Model 3300TB  
Inthepresenceofoxygenthecellgeneratesacurrent.Thesensorhasan  
internalthermistorcompensationnetwork.  
Theoutputofthesensorisconvertedtovoltagemillivoltrange. Thisoutput  
isfedtoavoltageamplifier. Theinternalthermistornetworkprovidestempera-  
turecompensationofthesensoroutput. Theresistanceofthenetworkchanges  
withtemperature,compensatingforthechangesofthemicrofuelcelloutputto  
temperature.  
Theoutputfromthetemperaturecompensationamplifierissenttoan  
analogtodigitalconverter(ADC),andtheresultingdigitalconcentrationsignalis  
senttothemicrocontroller.  
Thedigitalconcentrationsignalalongwithinputfromthefrontpanelbuttons  
(KEYBOARD)isprocessedbythemicrocontroller,andappropriateoutput  
signalsaredirectedtothedisplayandalarmrelays. Thesamedigitalinformation  
isalsosenttoa12-bitdigitaltoanalogconverter(DAC)thatproducesthe0-10  
V dcanalogconcentrationsignalandthe0-10V dcanalograngeIDoutput.A  
voltagecurrentconverter(E–ICONV)producesthe4-20mA dcanalog  
concentrationsignal.  
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Installation 3  
Installation  
Installationoftheanalyzerincludes:  
1. Unpacking the system.  
2. Mounting the Control Unit to a wall  
3. InstallingtheMicro-FuelCell  
4. Makingtheelectricalconnections.  
5. Making the gas connections.  
6. Testingtheinstallation.  
CAUTIONS:  
Read this chapter in its entirety before installing the units.  
The Sample must be free of entrained solids or water. How-  
ever, a high humidity sample is ideal, since it will prevent  
water loss from the cell electrolyte.  
The Micro-Fuel Cell sensor electrolyte is caustic. Do not  
attempt to open it. Leaking or exhausted cells should be  
disposed of in accordance with local regulations. Refer to the  
Material Safety Data Sheet in the Appendix.  
Any damage or scarring of the delicate permeable membrane  
on the sensing end of the cell will require cell replacement.  
Prevent contact with membrane by any solid object.  
3.1 Unpacking the Analyzer  
As soon as you receive the instrument, carefully unpack and inspect the  
Unit, and any included accessories for damage. Immediately report any  
damage to the shipping agent. The analyzer is shipped with all the materials  
you need to install and prepare the system for operation.  
CAUTION: Do not disturb the integrity of the cell package until the cell is to  
actually be used. If the cell package is punctured and air is  
permitted to enter, cell-life will be compromised.  
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3 Installation  
Model 3300TB  
3.2 Location and Mounting  
3.2.1 Control Unit Installation  
The 3300TB Control Unit is designed to be wall-mounted, in a general  
purpose, area. The unit should be installed at viewing level in a sheltered  
area.  
Refer to the Outline diagram D-70361 for the physical dimensions of  
theanalyzer.  
3.2.2 InstallingtheMicro-FuelCell/CellBlockOrientation  
A Micro-Fuel Cell is included as a separate item. It must be installed  
prior to instrument use.  
Also, once it is expended, or if the instrument has been idle for a  
lengthy period, the Micro-Fuel Cell will need to be replaced.  
Important Installation Note!  
Membrane  
side of MFC  
-MUST FACE DOWNWARD-  
Contact side  
of MFC  
During the Installation and/or Replacement of the MFC, Membrane  
surface MUST ALLWAYS FACE DOWNWARD, and the Contact side of  
the Membrane, MUST be placed FIRST into Analysis Unit.  
The reason for proper Installation/Replacement is, if any bubble that  
develops as the electrolyte dries out will be directed by the gravity away  
fromthemembrane.  
To install or replace the Micro-Fuel Cell, follow the procedures in  
Chapter 5, Maintenance.  
3-2  
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Installation 3  
3.3 Electrical Connections  
Figure 3-1 shows the Model 3300TB rear panel of the control unit.  
For detailed pinouts, see the wiring/interconnection drawings in the Draw-  
ings section at the rear of this manual. To gain access to the terminal blocks,  
the analyzer door screws must be lossened, and the door opened.  
Figure 3-1 Electrical Connectors for AC Control Unit  
Primary Input Power: The power strip supplied inside the analyzer.  
Connect ground to terminal 1, neutral to terminal 3, and hot to terminal 2.  
Make sure female plug end is inserted in the control unit power receptacle.  
The universal power supply allows direct connection to any 100-240  
VAC, 50/60Hz power source. The fuse block, to the right of the power cord  
receptacle, accepts two 5x20mm 0.5 A, 250V, IEC time-lag (T) fuse. (See  
Fuse Replacement in chapter 5, Maintenance.)  
The Power switch is located on the right-hand end of the power source  
inputreceptacleassembly.  
AC Power Terminal Strip  
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3 Installation  
Model 3300TB  
Analog Outputs: There are three DC output signal connectors with  
screw terminals on the panel. There are two wires per output with the polar-  
ity noted. See Figure 3-3. The outputs are:  
0–10 V % Range:  
Voltage rises with increasing oxygen concentration,  
from 0 V at 0 percent oxygen to 10 V at full scale  
percent oxygen. (Full scale = 100% of programmed  
range.)  
0–10 V Range ID:  
03.33 V = Low Range, 06.66 V = High Range,  
10 V = Air Cal Range.  
4–20 mA % Range: Current increases with increasing oxygen concentra-  
tion, from 4 mA at 0 percent oxygen to 20 mA at full  
scale percent oxygen. (Full scale = 100% of pro-  
grammedrange.)  
Alarm Relays: The three alarm-circuit connectors are screw terminals  
for making connections to internal alarm relay contacts. There is one set of  
contacts for each type of alarm. Contacts are Form C, with normally open  
and normally closed contact connections capable of switching up to 0.5  
ampere at 125 VAC into a resistive load (2A for 30 VDC).  
The alarm relay circuits are designed for failsafe operation, meaning the  
relays are energized during normal operation. If power fails the relays de-  
energize(alarmsactivated).  
The contact connections are indicated diagrammatically on the rear  
panel as Normally Closed, Common, and Normally Open. Figure 3-2  
explains how these act in failsafe operation.  
Alarm 1 and Alarm 2 can both be configured as either HI or LO. A  
HI alarm will activate when concentration is above treshold, while a LO  
alarm will activate concentration is below treshhold.  
Figure 3-2: Contact ID for FAILSAFE Relay Operation  
3-4  
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Installation 3  
The specific descriptions for each type of alarm are as follows:  
Alarm #1  
Programmable as high or low alarm (actuates when  
concentration is above threshold). Can be set anywhere  
between 0 and 9999ppm, but must be set ABOVE the  
threshold set for the LO Alarm.  
Alarm #2  
Programmable as high or low alarm (actuates when  
concentration is below threshold). Can be set anywhere  
from 0 to 9999ppm.  
Sensor Fail  
Actuates when the output of the Micro-Fuel Cell sensor  
falls below the acceptable level.  
CAUTION:  
There could be hazardous voltage at the alarms termi-  
nals, even when power is removed from the instrument.  
3.4 Gas Connections  
The standard Model 3300TB has two inlets and one outlet fixture only.  
Calibration gasses can be connected into the "Span" inlet. All of the gas  
connections are 1/4 inch brass fittings.  
A switching valve is provided to feed the analysis unit with either  
sample or gas.  
A flowmwter and flow controller valve are part of the system and will  
assist in setting the flow of the gas.  
Sample flow should be adjusted to 2 SCFH. The sample vent connec-  
tion should not restrict the sample flow. The sensor is designed to operate at  
atmospheric pressure. Restricting the sample vent line will result in pressur-  
izing the sensor and altering the O2 reading.  
The pressure required will depend on the sampling system. When  
venting into a constant pressure, such as the atmosphere, controlling input  
pressure is simple. If you are venting into a system of varying pressure, then  
some form of pressure regulation is required to maintain a constant pressure  
across the sensor.  
The Sample and Span pressure is not to exceed 50 psig (345 kPa).  
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3.4.1 Vacuum Service Option  
For vacuum service pluming reference figure 3-4. The vacuum service  
option is recommended for applications in which the sample source is not  
pressurized. The customer must supply a pump and by-pass system to  
complete the sample system. The sample inlet and outlet pressure must be  
maintained at a constant pressure for proper performance. If the sample inlet  
or vent pressure will not be held constant during the process, a pressure  
regulator must be used to regulate the pressure across the cell.  
Adjust the flow rate on a vacuum service system as follows:  
Select Sample with the three-way control valve and open the flow  
control valve on the analyzer to full flow (located on the analyzer flow  
meter). Open the pump by-pass valve, and turn on the pump. Readjust the  
pump by-pass valve to limit the maximum flow rate to full scale on the  
flowmeter with the flowmeter valve fully open. Adjust the analyzer flow  
control valve (flowmeter valve) to a flow-rate of approximately 2 SCFH).  
Select Span and verify that the span and Sample gas are at different pres-  
sures. The calibration accuracy will be adversely affected if the Span and  
Sample gases are at differing pressures.  
If the span gas is provided from pressurized source, a control valve  
must be added between the analyzer and the span gas source. This valve is  
used to adjust the span flow rate to match the sample flow rate. Do not  
adjust the span flow rate with the flow control valve located on the analyzer  
for units with vacuum service options.  
Customer Supplied Parts  
Figure 3-4: Piping Diagram for Vacuum Service Option  
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Installation 3  
3.5 Installation Checklist  
Before connecting the instrument to the power source and turning it on,  
make sure you have:  
Correctly installed the Sample and Exhaust gas lines  
Checked for leaks  
Set the sample pressure to 5–10 psig (34.5 - 68.9 kPa), nominal  
(fornon-vacuumserviceunits)  
Set the flow  
Once the above checks have been made, you can connect to the power  
source. The instrument is now ready for operation.  
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Operation 4  
Operation  
4.1 Introduction  
Once the analyzer has been mounted, the gas lines connected and the  
electrical connections made, the Analyzer can be configured for your appli-  
cation. This involves setting the system parameters:  
Defining the user selectable analysis ranges.  
Settingalarmsetpoints.  
Calibratingtheinstrument.  
All of these functions are performed via the front panel controls, shown  
in Figure 4-1.  
Analyzing for the trace oxygen level in the gas passing through the cell  
block is the default mode of operation. As long as no front panel buttons are  
being pressed the Unit is analyzing.  
Figure 4-1: Front Panel Controls and Indicators  
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4.2 Using the Function and Data Entry  
Buttons  
When no buttons on the Analyzer are being pressed, the instrument is in  
the Analyze mode. It is monitoring the anount of oxygen in the sample gas  
that is flowing through the sampling system.  
When one of the Function Buttons is being pressed, the Analyzer is in  
the Setup mode or the Calibration mode.  
The 4 Setup function buttons on the analyzer are:  
SET ALARM 1  
SET ALARM 2  
SET HI RANGE  
SET LO RANGE  
The Calibration mode button is:  
SPAN  
The Data Entry buttons (and ) increment the values displayed on  
the TRACE OXYGEN meter while one of the Function buttons is being  
held down.  
: Incrementsthedisplayedvalueupwards.  
: Incrementsthedisplayedvaluedownwards.  
Any of the functions can be selected at any time by holding down the  
appropriatebutton.  
Each function will be described in the following sections. Although the  
operator can use any function at any time, the order chosen in this manual is  
appropriate for an initial setup.  
4.3 Setting the Analysis Ranges  
The two user definable analysis ranges are both capable of being  
adjusted for from 0-10ppm to 0-9999ppm oxygen concentration. Whatever  
values are selected, the analyzer automatically switches from the LO range to  
the HI range when the oxygen concentration reaches the LO range fullscale  
value, and it switches back to the LO range when the oxygen concentration  
falls below of the LO range fullscale value  
Note: The HI Range setpoint MUST be set at a higher concentration percent-  
age than the LO Range setpoint.  
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Operation 4  
4.3.1 HI Range  
Setting the HI Range fullscale value defines the LEAST sensitive  
analysis range to be used. To set the HI Range:  
1. Press the SET HI RANGE Function button once.  
2. Immediately (within 5 seconds) press either the or button to  
raise or lower the displayed value, as required, until the display  
readsthedesiredfullscalepercentconcentration.  
4.3.2 LO Range  
Setting the LO Range fullscale value defines the MOST sensitive range  
to be used. To set the LO Range:  
1. Press the SET LO RANGE Function button once.  
2. Immediately (within 5 seconds) press either the or button to  
raise or lower the displayed value, as required, until the display  
readsthedesiredfullscalepercentconcentration.  
4.4 Setting the Alarm Setpoints  
The alarm setpoints can be adjusted over the full range of the analyzer  
(0-9999ppm oxygen content). The set point values are expressed in ppm  
only.  
4.4.1 Set Alarm 1  
Alarm 1 can be set either as a high or low alarm. To configure this  
alarm to your preferences:  
1. Press the SET ALARM 1 function button once.  
2. The display will flash either HI or LO depending on what the  
alarm was configured in the last time. If the alarm configuration  
must be changed, use the Up or Down keys to toggle the alarm  
from HI to LO or viceversa (if within 5 seconds no key is  
pressed, the instrument will return to the sample mode and  
displayoxygenconcentration).  
3. To change the setting at which the alarm will be actuated, press  
the SET ALARM 1 function button once more. The alarm  
setpoint will flash on the LED display. Press either the Up or  
Down keys to raise or lower the displayed value, as required,  
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until the display reads the desired percent concentration. (if  
within 5 seconds no key is pressed, the instrument will return to  
the sample mode and display oxygen concentration).  
After setting the value wait for the unit to time out of this mode (ap-  
proximately 5 seconds) and return to displaying oxygen concentration.  
4.4.2 Set Alarm 2  
Alarm 2 can be set either as a high or low alarm. To configure this  
alarm to your preferences:  
1. Press the SET ALARM 2 function button once.  
2. The display will flash either HI or LO depending on what the  
alarm was configured in the last time. If the alarm configuration  
must be changed, use the Up or Down keys to toggle the alarm  
from HI to LO or viceversa (if within 5 seconds no key is  
pressed, the instrument will return to the sample mode and  
displayoxygenconcentration).  
3. To change the setting at which the alarm will be actuated, press  
the SET ALARM 2 function button once more. The alarm  
setpoint will flash on the LED display. Press either the Up or  
Down keys to raise or lower the displayed value, as required,  
until the display reads the desired percent concentration. (if  
within 5 seconds no key is pressed, the instrument will return to  
the sample mode and display oxygen concentration)  
After setting the value wait for the unit to time out of this mode (ap-  
proximately 5 seconds) and return to displaying oxygen concentration.  
4.4.3 Sensor Fail Alarm  
The SENSOR FAIL alarm triggers if, during calibration, the raw cell  
output for the given oxygen level is too low. (See Calibration Characteris-  
tics in Chapter 2.). Should this alarm trigger, the ALARM indicator below  
the SET function buttons will start blinking. Replace the cell before pro-  
ceeding.  
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Operation 4  
4.5 Selecting a Fixed Range or Autoranging  
The Model 3300TB can operate in fixed high, fixed low, or  
autoranging mode. To change modes:  
1. Press and then release the SET HI RANGE and the SET LO  
RANGE buttons simultaneously.  
2. Within 5 seconds, press either the or button until Auto, Lo,  
or Hi displays on the LCD, as desired.  
After about three seconds, the analyzer resumes monitoring in the  
selected range mode.  
NOTE: If the concentration exceeds 9999 ppm oxygen, the analyzer will  
automatically switch to the Calibration Range, EVEN THOUGH IN-  
STRUMENT IS IN THE FIXED RANGE MODE.  
4.6 Calibration  
Preliminary—If not already done: Power up the Analyzer and  
allow the LED reading to stabilize. Set the Alarm setpoints and  
the fullscale ranges to the desired values.  
Procedure:  
1. Expose the sensor to ambient air or instrument grade air (20.9 %  
oxygen). Allow time for the sampling system to purge and the  
analyzertoachieveequilibrium.  
Note: If the analyzer output goes above the high alarm setpoint or below the  
low alarm setpoint, the display will go blank and the front panel  
ALARM Indicator, beneath the SET Function buttons, will blink. Hold  
down the SPAN button until the ALARM Indicator stops blinking.  
2. Press the SPAN button once.  
3. Within 5 seconds press either the or button until the display  
is stable and reads 20.9 %.  
The unit is now calibrated.  
Note: If you use a span gas other than air, do not span in the 0-10 ppm  
range. Calibration at this level is not dependable.  
Note: If you use a span gas other than air, and the span gas oxygen concen-  
tration is less than 10,000 ppm, the analyzer could take up to 65  
seconds to to settle. The lag is caused by a digital filter that is active  
only below 10,000 ppm (1%) oxygen.  
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4 Operation  
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4.7 Displaying Percent & PPM on the LED  
Display  
The analyzer displays the concentration in percent whenever the read-  
ing is over 9999 ppm. When the reading changes to percent, the LED  
display will alternate between flashing “PC” and the oxygen concentration.  
On the other hand, if the instrument is displaying ppm, only the concentra-  
tion reading will be shown.  
Supplementary Information  
If, during the Span Procedure, you pressed the SPAN button by mis-  
take, you must wait five minutes for the analyzer to resume analisis or you  
can press the UP button and then the DOWN button. (Pressing the UP and  
DOWN buttons causes the analyzer to time-out in five seconds instead of  
fiveminutes).  
If during the span procedure, you press the RANGE or ALARM  
buttons:  
- either the range or alarm routine will be activated.  
- any changes to span will be rejected.  
- the 60 second alarm delay will not occur, i.e., the alarms will be  
responsive immediately.  
CAUTION: TET/AI considers the action of pressing the ALARM or RANGE  
buttons to be at your (the user’s) discretion. The user should be  
aware that the alarms will become active within 5 (five) seconds if  
the Range or Alarm bottons are pressed during Span. This may  
result in false alarms if the Span gas has not been fully purged  
from the Cell and Sample lines.  
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Maintenance 5  
Maintenance  
Asidefromnormalcleaningandcheckingforleaksatthegasconnections,  
theModel3300TBshouldnotrequireanymaintenancebeyondreplacementof  
expendedMicro-FuelCells,andperhapsablownfuse.Routinemaintenance  
includesoccasionalrecalibration,asdescribedinchapter4,Operation.  
5.1 Replacing the Fuse  
Remove Power to Unit before replacing the fuse.  
Whenafuseblows,checkfirsttodeterminethecause,thenreplacethe  
fuseusingthefollowingprocedure:  
1. DisconnecttheACpowerandplacethepowerswitchlocatedon  
therearpanelintheOposition.Removethepowercordfromthe  
receptacle.  
2. Thefusereceptacleislocatedinthepowercordreceptacle  
assemblyintheupperleft-handcorneroftherearpanel.SeeFigure  
5-1.  
FUSE  
Figure 5-1: AC Fuse Replacement  
3. Insertasmallflat-bladescrewdriverintotheslotinthereceptacle  
wallnearestthefuseandgentlypryopenthefusereceptacle.The  
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fuseholderwillslideout.Therearetwofusesinuseandarevisiblein  
theclip.  
4. Removethebadfuseandreplaceitwitha5x20mm0.5 A,  
250 VAC, IECtimelag(T)fuse(P/NF1128).  
5. Replacethefuseholderintoitsreceptacle,pushinginfirmlyuntilit  
clicks.  
5.2 Sensor Installation or Replacement  
5.2.1 When to Replace a Sensor  
Onthetraceanalyzers,theMicro-fuelCellwilltypicallyfailduetoexces-  
sivezerooffsetcausedbylossofwater. Largezerooffsetswillresultininaccu-  
rateSPANsettings. Totestforthiscondition,purgethesensorandsample  
systemwithZEROgas(typicallynitrogenwithlessthan1ppmO2). Itmaytake  
severalhoursforthesamplesystemandcelltoreturntoastablelowlevelofO2  
ifithasbeenexposedtohigherlevelsofO2. Iftheinstrumentwillnotcome  
downtoanacceptablylowreadingonzerogas,thenadepletedcellorasample  
systemleakshouldbesuspected. Typicallyoffsetsof1.0ppmorlessare  
acceptable. ACellfailuremayalsobeindicatedbyaninabilitytoSPAN,or  
slowresponsetochangesinO2 concentrationatlevelsbelow100ppm.  
CAUTION: Read the section Cell Warranty Conditions, below, before replac-  
ing the cell.  
CAUTION:  
After replacing the Micro-Fuel Cell, the analyzer must be  
recalibrated. See Calibration in chapter 4.  
5.2.2 Ordering and Handling of Spare Sensors  
Tohaveareplacementcellavailablewhenitisneeded,TAIrecommends  
thatonesparecellbepurchasedwhenthecurrentcell'swarrantyperiodis  
approximatelytwothirdsover.  
CAUTION: Do not stockpile cells. The warranty period starts on the day of  
shipment. For best results, do not order a new spare cell to soon.  
Thesparecellshouldbecarefullystoredinanareathatisnotsubjectto  
largevariationsinambienttemperature(75 °Fnominal),andinsuchawayasto  
eliminatethepossibilityofincurringdamage.  
CAUTION: Do not disturb the integrity of the cell package until the cell is to  
actually be used. If the cell package is punctured and air is permit-  
ted to enter, cell-life will be compromised.  
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Maintenance 5  
WARNING: THE SENSOR USED IN THE MODEL 3300TB CON-  
TAINS AN ELECTROLYTE WHICH INCLUDES  
SUBSTANCES THAT ARE EXTREMELY HARMFUL  
IF TOUCHED, SWALLOWED, OR INHALED. AVOID  
CONTACT WITH ANY FLUID OR POWDER IN OR  
AROUND THE UNIT. WHAT MAY APPEAR TO BE  
PLAIN WATER COULD CONTAIN ONE OF THESE  
TOXIC SUBSTANCES. IN CASE OF EYE CONTACT,  
IMMEDIATELY FLUSH EYES WITH WATER FOR AT  
LEAST 15 MINUTES. CALL A PHYSICIAN. (SEE  
APPENDIX, Material Safety Data Sheet—MSDS).  
5.2.3 Removing the Micro-Fuel Cell  
RefertoFigure5-2foranexplodedviewofthecellblockandcell.To  
removeaspentordamagedMicro-FuelCell:  
1. DisconnectthePowerSourcefromtheControlUnit.  
2. Opentheanalyzerdoor.  
3. Unscrewthecell-retainercapfromthecellblockbyturningit  
counterclockwiseuntilitisfree.  
Figure 5-2: Exploded View of MFC and Cell Block  
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4. Slowly withdraw the cap from the block. The cell should come out  
with the cap.  
5. Carefullypullthecelloffofthecap.DONOTTOUCHTHE  
SCREENED END OF THE CELL OR ANY FLUID THAT MAY  
BE LEAKING FROM IT.  
6. Disposeofthecellinasafemanner,inaccordancewithall  
applicableENVIRONMENTALANDSAFETYlaws.  
5.2.4 Installing a Micro-Fuel Cell  
ToinstallanewMicro-FuelCell:  
CAUTION: Do not scratch, puncture, or otherwise damage the sensing  
membrane of the Micro-Fuel Cell. If the membrane is damaged,  
the cell must be replaced.  
1. DisconnectthePowerSourcefromtheControlUnit.  
2. RemovethenewMicro-FuelCellfromitsprotectivebag.  
3. ExaminetheO-ringatthebaseofthethreadedportionofthecell-  
retainercap,andreplaceitifitiswornofdamaged.  
4. Replacethecellontheendofcell-retainercap,whichisdesignedto  
fitsnuglyintotherimonthescreensideofthecell.  
5. Carefulinsertthecapandcellintotheblock,andscrewthecap  
clockwiseintothecellblockuntilitisheldfirmlyinthecell.  
6. Reconnectthecellblockelectricalconnectorplug.  
5.2.5 Cell Warranty Conditions  
TheB-2CClassMicro-FuelcellisusedintheModel3300TB.Thesecells  
arewarrantedfor6months,withanexpectedlifeof8monthsfromthedateof  
shipment(underspecifiedoperatingconditions—seeAppendix).Noteany  
Addendaattachedtothefrontofthismanualforspecialinformationapplyingto  
yourinstrument.  
Notethatthewarrantyperiodbeginsonthedateofshipment.Thecus-  
tomershouldstockonlyonesparecellperinstrumentatatime.Donotattempt  
tostockpilesparecells.  
Ifacellwasworkingsatisfactorily,butceasestofunctionbeforethe  
warrantyperiodexpires,thecustomerwillreceivecredittowardthepurchaseof  
anewcell.  
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Maintenance 5  
Ifyouhaveawarrantyclaim,youmustreturnthecellinquestiontothe  
factoryforevaluation.Ifitisdeterminedthatfailureisduetofaultyworkmanship  
ormaterial,thecellwillbereplacedatnocosttoyou.  
Note: Evidence of damage due to tampering or mishandling will render the  
cell warranty null and void.  
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Appendix  
Appendix  
A.1 Specifications  
Ranges:  
Twouserselectablerangescanbeset  
between 0-10 ppm and 0-9999 ppm  
oxygen,anda0-25 %(nominal)AirCali-  
brationRange.  
SignalOutput:  
Voltage: 0–10 V dc,negativeground  
Current: 4-20mA,negativeground  
Range ID: 0-10 V dc.  
Display:  
Lightemittingdiode(LED)display.  
Alarms:  
Onehighalarmrelay,adjustable;onelow  
alarmrelay,adjustable;onesensorfailure  
relay.(Allarefailsafe.)  
SystemOperatingTemp:  
0-50 °C  
Accuracy:  
±2 %offullscaleatconstanttemperature  
±5 %offullscalethroughoperatingtem-  
peraturerange(At100ppmandhigheruser  
definedranges)oncetemperatureequilib-  
riumisreached.  
±1 ppmfor10 ppmrangeunderabove  
conditions.  
Response Time:  
SystemPowerRequirement:  
SystemEnclosure:  
90 % in less than 65 seconds at 25 °C  
(68 °F).  
AC (100-240 VAC, 50/60Hz), or  
DC(10-36 VDC);userspecified.  
Wall Mount, NEMA -4 Enclosure:  
16.40" H × 8.0" W × 6.0" D (416.56 mm×  
203.2 mm×152.40 mm).  
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Model 3300TB  
A.2 Spare Parts List  
QTY P/N DESCRIPTION  
1
1
1
2
C-65220-A  
C-64586  
C-6689-B-2C  
F-1130  
PC Board, Main  
PC Board, Power Supply  
Micro-Fuel Cell, class B-2C  
Fuse (AC), ½A, 250 VAC Type "T" (IEC),  
5 x 20mm  
IMPORTANT: Orders for replacement parts should include the part number  
and the model and serial number of the system for which the  
partsareintended.  
Send orders to:  
TELEDYNE ELECTRONIC TECHNOLOGIES  
Analytical Instruments  
16830 Chestnut Street  
City of Industry, CA 91749-1580  
Telephone: (626) 934-1500  
TWX: (910) 584-1887 TDYANYL COID  
Fax: (626) 961-2538  
or your local representative.  
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Appendix  
A.3 Reference Drawing  
D-70361 OutlineDiagram  
D-70362 FinalAssembly  
A.4 Miscellaneous  
The symbol: ~ is used on the rear panel of the model 3300TB to signify  
volts alternating current (VAC).  
NOTE: The MSDS on this material is available upon request  
through the Teledyne Environmental, Health and  
Safety Coordinator. Contact at (626) 934-1592  
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Appendix  
A.5 Material Safety Data Sheet  
Section I – Product Identification  
Product Name:  
Micro-FuelCells  
Mini-Micro-FuelCells,allclasses  
Super Cells, all classes except T–5F  
Electrochemical Oxygen Sensors, all classes.  
Manufacturer:  
Address:  
TeledyneElectronicTechnologies/AnalyticalInstruments  
16830 Chestnut Street, City of Industry, CA 91749  
Phone: (626) 961-9221  
Technical Support: (626) 934-1673  
Environment,Health  
and Safety:  
Date Prepared :  
(626) 934-1592  
11/23/98  
Section II – Physical and Chemical Data  
Chemical and Common Names: Potassium Hydroxide (KOH), 15% (w/v)  
Lead (Pb), pure  
CAS Number:  
KOH 1310–58–3  
Pb 7439–92–1  
KOH (15% w/v)  
–10 to 0 °C  
Boiling Point/Range: 100 to 115 °C  
Pb (pure)  
328 °C  
1744 °C  
11.34  
Melting Point/Range:  
Specific Gravity:  
pH:  
1.09 @ 20 °C  
>14  
N/A  
Solubility in Water:  
Percent Volatiles by Volume: None  
Completely soluble  
Insoluble  
N/A  
Appearance and Odor: Colorless, odorless solution  
Grey metal,  
odorless  
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Model 3300TB  
Section III – Physical Hazards  
Potential for fire and explosion: The electrolyte in the Micro-Fuel Cells  
is not flammable. There are no fire or explosion hazards associated with  
Micro-Fuel Cells.  
Potential for reactivity: The sensors are stable under normal conditions of  
use. Avoid contact between the sensor electrolyte and strong acids.  
Section IV – Health Hazard Data  
Primary route of entry:  
Ingestion, eye/skin contact  
Exposure limits:OSHA PEL: .05 mg/cu.m. (Pb)  
ACGIH TLV:  
2 mg/cu.m. (KOH)  
Effects of overexposure  
Ingestion:  
The electrolyte could be harmful or fatal  
if swallowed.  
Oral LD50 (RAT) = 3650 mg/kg  
Eye: The electrolyte is corrosive; eye contact  
could result in permanent loss of vision.  
Dermal: The electrolyte is corrosive; skin contact  
could result in a chemical burn.  
Inhalation: Liquid inhalation is unlikely.  
Signs/symptoms of exposure: Contact with skin or eyes will cause a  
burning sensation and/or feel soapy or  
slippery to touch.  
Medical conditions  
aggravated by exposure:  
Carcinogenicity:  
None  
NTP Annual Report on Carcinogens: Not  
listed  
LARC Monographs: Not listed  
OSHA: Not listed  
Other health hazards:  
Lead is listed as a chemical known to the  
State of California to cause birth defects  
or other reproductive harm.  
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Appendix  
Section V – Emergency and First Aid Procedures  
Eye Contact:  
Flush eyes with water for at least 15 minutes and get im-  
mediate medical attention.  
Skin Contact:  
Ingestion:  
Wash affected area with plenty of water and remove  
contaminated clothing. If burning persists, seek medical  
attention.  
Give plenty of cold water. Do not induce vomiting.  
Seek medical attention. Do not administer liquids to an  
unconscious person.  
Inhalation:  
Liquid inhalation is unlikely.  
Section VI – Handling Information  
NOTE: The oxygen sensors are sealed, and under normal circumstances,  
the contents of the sensors do not present a health hazard. The  
following information is given as a guide in the event that a cell  
leaks.  
Protective clothing:  
Rubber gloves, chemical splash goggles.  
Clean-up procedures: Wipe down the area several times with a wet pa-  
per towel. Use a fresh towel each time.  
Protective measures  
during cell replacement:Before opening the bag containing the sensor  
cell, check the sensor cell for leakage. If the sen-  
sor cell leaks, do not open the bag. If there is  
liquid around the cell while in the instrument,  
put on gloves and eye protection before remov-  
ing the cell.  
Disposal:  
Should be in accordance with all applicable  
state, local and federal regulations.  
NOTE: The above information is derived from the MSDS provided by the  
manufacturer. The information is believed to be correct but does  
not purport to be all inclusive and shall be used only as a guide.  
Teledyne Analytical Instruments shall not be held liable for any  
damage resulting from handling or from contact with the above  
product.  
Teledyne Analytical Instruments  
A-7  
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