3M WIBGET WB-300 User manual

3M Occupational Health and Environmental Safety Division
3MTM WIBGETTM Heat Stress Monitor WB-300
WIBGET WB-300 User Manual
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i Dangers, warnings and cautions
3MTM WIBGETTM Heat Stress Monitor WB-300 User Manual
Dangers, warnings and cautions
Danger!
Failure to observe the following procedures may result in serious personal injury
•Thisinstrumentisnotintrinsicallysafe,donotuseinhazardouslocations.
Warning!
Failure to observe the following procedures could damage the instrument
• Readthemanualbeforeoperation.
• Donotstoreintemperaturesexceeding100°C(212°F)
• Donotimmerseinliquids.
• Condensationmaydamageyourinstrument.
• Substitutionofcomponentsmayimpairtheaccuracyoftheinstrument.Repairshould
becompletedbyauthorizedservicepersonnelonly.
Caution!
General
• Replacementof9-Valkalinebatteryonlyinanon-hazardouslocations.
• IfrechargingwithaNiHMBatterypack,rechargeonlyinanon-hazardousenvironment.
• Anon-condensingenvironmentisrequiredforpropermeasurements.
• Donotchargebatteryoutsidetherangeof0°Cto40°C(32°Fto104°F).
• Batteryrun-timemaybereducedwhenoperatingatlowerthan0°C(32°F)
temperatures.
Intended Use
TheWIBGETWB-300isintendedtomeasureenvironmentaltemperaturesforheat
stressanalysis.Consultyourcompany’ssafetyprofessionalforlocalstandards,orcall3M
at1-800-243-4630.
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Table of Contents
UpandRunning.........................................................................................................................3
Checkwickandllnaturalwetbulb..........................................................................................3
KeypadOperation......................................................................................................................4
Sensors .....................................................................................................................................5
NaturalWetBulbThermometer................................................................................................5
GlobeThermometer.................................................................................................................5
DryBulbThermometer.............................................................................................................5
Measurements...........................................................................................................................6
WetBulbGlobeTemperature...................................................................................................6
DisplayedData..........................................................................................................................6
Setup..........................................................................................................................................7
PlacingtheWB-300on-siteformonitoring/testing...................................................................7
OperationalCheck.....................................................................................................................8
PowerOptions...........................................................................................................................8
8
..........................................8
9
9
9
9
9
9
9
9
9
9
9
9
9
10
10
.......................................11
12
12
12
9-VAlkalineBatteryReplacement..........................................................................................
NiMHBatteryPack..............................................................................
AppendixA:Specications......................................................................................................
Measurements..........................................................................................................................
Languages.................................................................................................................................
Housing......................................................................................................................................
Size............................................................................................................................................
Weight......................................................................................................................................
SensorTypes.............................................................................................................................
Accuracy...................................................................................................................................
OperatingTemperatureRange..................................................................................................
PowerOptions..........................................................................................................................
BatteryLife................................................................................................................................
ChargeTime(NiMHBatteryPack)...........................................................................................
SafetyApprovalsandSpecialConditions.................................................................................
AppendixB:HeatExposuresTables.......................................................................................
ACGIH......................................................................................................................................
PHELCurves(TotalExposureTimeinHours:Minutes)..................
ProductInformation.................................................................................................................
Accessories.............................................................................................................................
Warranty..................................................................................................................................
Figures
Figure1:Wetbulbandmaintenance..........................................................................................4
Figure2:Keypadkeysidentied..................................................................................................5
Figure3:Sensorsidentied..........................................................................................................6
Figure4:Data/measurementscreenexamples..........................................................................7
Figure5:NiMHBatteryPack......................................................................................................9
iiTableofContents
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Up and Running
1. Ensurethewetbulb’swickisclean.Then,llthereservoirwithdistilledwater.
2. PlacetheWB-300intheworkareainasafelocationapproximately3.5feetoff
theground.
3. TurntheinstrumentOnbypressingI/OEnterkey.
• Ifthebatteryvoltagedisplayedduringthepower-onsequenceislessthanorequalto
6.4volts,replaceorrechargethebatteries.
4. UsingtheArrowkeys,selectthedesiredmeasurement/parameterscreen.
5. Allow10minutesforthesensorstostabilizetotheenvironmentbeforetaking
readings.
Check wick and fill natural wet bulb
TheWB-300usesacottonwickimmersedintoareservoircontainingdistilledwater.Ordinary
tapwatershouldnotbeused,asthecontaminantsthatareleftbehindafterevaporationwill
shortenthelifeofthewickandcausehighreadings.Ifthewickisdiscoloreditshouldbe
replaced.Toreplacethewick,slidetheoldwickoffthetopofthesensor.Placeanewwickover
thesensor,makingsurethatthebottomofthewickisdowninthereservoir.
Figure 1: Wet bulb and maintenance
Filling wet bulb reservoir
1.Removereservoircoverandllwithdistilledorde-ionizedwater.
2.Replacereservoircover.
Wick
Reservoircover
Reservoir
Up & Running
1UpandRunning
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Keypad Operation
Theunitoperatesusingamembranekeypadwith4keys.Thekeyresponds
whenthekeyisreleasedwhileallotherkeysrespondwhenthekeyispressed.
I/OEnterkey
Keys Explanation
I/O Enter The keyisusedtoturnonandofftheinstrumentandtoentersetup
changes.
Turning on:PressandreleasetheI/Oenterkeytopoweron.The
Instrumentname(WIBGET),revisionnumber,andbatteryinformation
appearsduringstart-up.
Turning off: HoldtheI/Okeydownwhileacount-down3-2-1occursinthe
lowerlefthandcornerofthedisplay.
Enter setup changes: WhileinSetupscreen,presstoenter(orselect)
setupchanges.
Setup Thekeyallowschangingthesetupparameters.Twoparametersare
available:CelsiusorFahrenheitandlanguageselection.
Setup: Presssetuptoaccesstheparameters.Usethearrowkeysto
switchbetweenthetwoparameters.Presstheenterkeytochangethe
parameters.Presssetupagaintoexit.
Up Arrow Thekeychangeswhichitemsappearonthedisplay.Scrollsup.
Down Arrow Thekeychangeswhichitemsappearonthedisplay.Scrollsdown.
Figure 2: Keypad keys identied
Down Arrow
UpArrow
Setupkey
Keypad
2KeypadOperation
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Sensors
Natural Wet Bulb Thermometer
Thenaturalwetbulbthermometergivesanindicationoftheeffectsofhumidityonanindividual.
Relativehumidityandairowaretakenintoaccountbymeasuringtheamountofevaporative
coolingtakingplaceatathermometercoveredwithamoistenedwick.TheWB-300usesa
cottonwickimmersedintoareservoircontainingdistilledwater.Ordinarytapwatershouldnot
beused,asthecontaminantsthatareleftbehindafterevaporationwillshortenthelifeofthewick
andcausehighreadings.Ifthewickisdiscoloreditshouldbereplaced.Toreplacethewick,
slidetheoldwickoffthetopofthesensor.Placeanewwickoverthesensor,makingsurethat
thebottomofthewickisdowninthereservoir.
Globe Thermometer
Theglobethermometergivesanindicationoftheradiantheatexposureonanindividualdue
toeitherdirectlightorhotobjectsintheenvironment.Thisisaccomplishedbyplacinga
temperaturesensorinsideablackenedcoppersphereandmeasuringthetemperaturerise.The
WBGTindexisbasedontheresponseofa6inchdiameterglobe.TheWB-300usesa2inch
diameterglobeforafasterresponsetime.Thetemperatureofthe2inchglobeiscorrelated
tomatchthatofa6inchglobe.Asanoption,asensorarraywitha6inchdiameterglobeis
available.
Asanoption,asensorarraywitha6inchdiameterglobeisavailable.
Dry Bulb Thermometer
Thedrybulbthermometermeasurestheambientairtemperature.Thismeasurementisusedin
theoutdoorWBGTcalculationwhenahighsolarradiantheatloadmaybepresent.Theseriesof
whiteplatessurroundingthesensorshielditfromradiantheat.
A.Globethermometer
B.Naturalwetbulbthermometer
C.Drybulbthermometer
AB C
Figure 3: Sensors identied
Sensors
3Sensors
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Measurements
TheWB-300portableheatstressmonitorcomputestheWetBulbGlobeTemperature(WBGT).
TheWBGTisanacceptedmeasurementfordeterminingtheheatstresslevelimposedonan
individualinagivenenvironment.
TheWB-300measuresthreeparameters:
• Ambientordrybulbtemperature(DB)
• Naturalwetbulbtemperature(WB)
• Globetemperature(G)
Wet Bulb Globe Temperature
TheWBGTisaweightedaverageofthethreetemperaturesensorsusingthefollowing
formulas:
WBGT(indoor)=0.7WB+0.3G(denotedas"WBGTi"onthedisplay)
WBGT(outdoor)=0.7WB+0.2G+0.1DB(denotedas"WBGTo"onthedisplay)
;NOTE: The resulting WBGTi/WBGTo can be compared to indices of
work-rest regimens (or stay times) based upon the work loads. Please
see Appendix B for published heat exposure tables.
Displayed Data
Whenpoweredon,thepreviouslyviewedmeasurementscreenwillbedisplayed.Toviewdata
screens,presstheorkeys.
Data Screens
ThefollowingfourscreensareviewablebypressingtheorkeysontheWB-300.
Wet/DryMeasurementscreen GlobeMeasurementscreen
WBGTi/WBGToMeasurementscreen Batteryscreen
Figure 4: Data/measurement screen examples
Measurements
4Measurements
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Setup
Whilepoweredon,pressthesetupkeytochangethetemperatureunits(oF/oC)orthe
languagesettings(English,Spanish,French,Italian,orGerman),ifdesired.
Placing the WB-300 on-site for monitoring/testing
TheWB-300shouldbeplacedataheightof3.5feet(1.1m)forstandingindividualsor2
feet(.6m)forseatedindividuals.Tripodmountingisrecommendedtogettheunitaway
fromanythingthatmightblockradiantheatorairow.A1/4"x20threadedbushingonthe
bottomoftheinstrumentallowsmountingtoastandardphotographictripod.Donotstand
closetotheunitduringsampling.
Makesurethatthewetbulbreservoirislledwithdistilledwaterandthatthecottonwick
iscleanandfullywetted.Afteraddingwaterorplacingtheunitinanewenvironment,
allowtenminutesfortheglobeandwetbulbreadingstostabilize.
Aseriesofdashesappearinthedisplayifoneofthefollowingoccur:
•Thetemperatureisoutsideofitsallowablerange
•Atemperaturesensorhasfailed
Operational Check
Avericationmodule,3MID:70071581246,maybeusedtochecktheoperationofthe
WB-300. Remove the top sensor bar and plug the verication module into the top of the
unit. With the WB-300 set to read in degrees Celsius, verify that the displayed readings
match those printed on the module within +/-0.5oC.
Ifthereadingsarenotwithinthe+/-0.5oCtolerance,thenhavetheunitservicedand
calibrated.
Setup
5Setup
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Figure 5: NiMH Battery Pack
Power Options
Thereare3optionsforpoweringtheWB-300:a9-voltalkalinebattery,aNiMH(NickelMetal
Hydride)rechargeable6-cellbatterypack,andanACadapter.Adooronthebackoftheinstru-
mentallowstheuseraccesstothe9-voltbattery.Therechargeablebatterypackislocatedinside
oftheunit.Iftherechargeablebatterypackeverneedstobereplaced,itcanbeaccessedby
removingthescrewsfromthebottompaneloftheunit.
The2-positionswitchlocatedinthebatterycompartmentmustbesetbytheuserifthepower
supplymethodischanged.Theuppositionisforthe9-voltbattery.Thedownpositionallows
foreithertheACadapterortherechargeablebatteries.TheACadapterwilltricklechargethe
rechargeablebatteriesiftheyareinplaceoritwillsimplyallowforlinepoweroperationoftheunit.
9-V Alkaline Battery Replacement
The9-voltbatteryshouldbereplacedortheNiMHbatterypackshouldberechargedwhenthe
voltagedropsbelow6.4volts.Thebatteryvoltageisdisplayedwhentheinstrumentisturned
on.Whileturnedon,thebatteryvoltagecanbedisplayedatanytimebypressingtheupor
downarrowkeystomovethroughthedisplayuntilthebatteryvoltagescreenappears.If,while
operating,thebatteryvoltagedropsbelow6.4volts,thedisplaywillautomaticallyswitchto
thedisplayshowingthebatteryvoltagealongwithalowbatterymessage.Afteralowbattery
occurs,theunitwillcontinuetooperateforapproximately8hours.Whenthebatteryvoltage
fallsto6.2voltsorbelow,theunitwillautomaticallyturnoff.
NiMH Battery Pack
TheNiMHrechargeablebatterypackischargedintheinstrumentusing120VACto9VDC
adapter.Adischargedbatterypackrequiresachargeof16hours.LeavingtheACadapter
pluggedinforextendedlengthsoftimeorwhenoperatingtheinstrumentwillnotharmthe
rechargeablebatteries.
NiMH Battery Pack
Toinstall,slideintocaseandplugin
connector as shown.
Power Options
6PowerOptions
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Appendix A: Specifications
Measurements
• Globe,drybulb,wetbulb,WBGTi,(WBGTindoor)andWBGTo(WBGToutdoor).
• TemperaturesgiveninCelsiusorFahrenheit.
Languages
English,French,Spanish,Italian,German.
Housing
Designedwaterresistanttoalightrainormist.Ifrainisfrequent,bestpracticewouldbeto
remotethesensorbarandkeeptheinstrumentsheltered.(Note:whentopsensorbaris
removed,anoptionalcablecanbeattachedtomeasureremotely.)
Size
Height9.2in(23.5cm);Width7.2in(18.3mm);Depth3.0in(7.5mm)
Dimensionsincludemountedsensorassembly.
Weight
2.6lbs.(1.2kg)withmountedsensorassembly.
Sensor Types
Temperature:1000ohmplatinumRTD
Accuracy
Temperature:+/-0.5oCbetween0oCto100oC(+/-0.9o Fbetween32o Fto212oF)
Operating Temperature Range
SensorAssembly:-5oCto100oC(23oFto212oF)
Electronics: -5oC to 60oC (23o F to 140o F)
Power Options
9Valkaline,7.2VNiMHrechargeablepack(chargedintheunit),orACadapterwallpowercube(AC
adapter will power the unit or recharge the NiMH battery pack).
Battery Life
9Valkaline:140hours
Rechargeable Nickel MetalHydride:300hours
Charge Time (NiMH Battery Pack)
16hours(chargeintheunit)
Safety Approvals and Special Conditions
CEmark
CompliancewithEssentialHealthandSafetyRequirementshasbeenassuredbycompliancewith:
EN 50014 : 1997 and EN 50020 : 2002
The year of manufacture is determined bythethirdcharacterintheinstrument’sserialnumber.“A”
was manufactured in 2001, “B” in 2002, “C” in 2003, “D” in 2004 and so forth.
Specifications
7AppendixA:Specications
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Appendix B: Heat Exposures Tables
ACGIH
ScreeningCriteriaforHeatStressExposure.WBGTvaluesinoC.
• NOTE:accordingtotheACGIH’sguidelines,thetemperaturevaluesrepresentaworkand
restprocesswhichisexplainedinthestandards.PleaserefertotheACGIHTLV’sand
BEIsforspecicdetails.
Work and recovery
(TLV )
Light Moderate Heavy Very Heavy
75%to100% 31.0 28.0 26.0* 23.5*
50%to75% 31.0 29.0 27.5 25.5*
25%to50% 32.0 30.0 29.0 28.0
0%to25% 32.5 31.5 30.5 30.0
Work and recovery
(Action Limit)
Light Moderate Heavy Very Heavy
75%to100% 28.0 25.0 22.5* 20.0*
50%to75% 28.5 26.0 24.0 22.5*
25%to50% 29.5 27.0 25.5 24.5
0%to25% 30.0 29.0 28.0 27.0
*ValuesnotspeciedbyACGIHhavebeenestimatedforcontinuity.
Citedfrom"AmericanConferenceofGovernmentalIndustrialHygienists-ThresholdLimit
ValuesandBiologicalExposureIndicesfor2008";ReprintedwithpermissionfromACGIH
Appendix B
8AppendixB:HeatExposuresTables
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PHEL Curves (Total Exposure Time in Hours: Minutes)
WBGT (oF) I II III IV V VI
80.0 >8:00 >8:00 >8:00 8:00 6:35 4:30
81.0 >8:00 >8:00 >8:00 8:00 6:35 4:30
82.0 >8:00 >8:00 8:00 7:05 5:25 3:40
83.0 >8:00 8:00 7:45 6:25 4:55 3:20
84.0 >8:00 8:00 7:05 5:55 4:30 3:05
85.0 8:00 7:45 6:30 5:20 4:05 2:50
86.0 8:00 7:05 5:55 4:55 3:45 2:35
87.0 7:25 6:30 5:25 4:30 3:25 2:20
88.0 6:45 5:55 4:55 4:05 3:10 2:10
89.0 6:10 5:25 4:30 3:45 2:50 2:00
90.0 5:40 5:00 4:10 3:25 2:40 1:50
91.0 5:15 4:35 3:50 3:10 2:25 1:40
92.0 4:50 4:10 3:30 2:55 2:15 1:30
93.0 4:25 3:50 3:15 2:40 2:00 1:25
94.0 4:05 3:35 3:00 2:25 1:50 1:15
95.0 3:45 3:15 2:45 2:15 1:45 1:10
96.0 3:25 3:00 2:30 2:05 1:35 1:05
97.0 3:10 2:45 2:20 1:55 1:25 1:00
98.0 2:55 2:35 2:10 1:45 1:20 0:55
99.0 2:40 2:20 2:00 1:40 1:15 0:50
100.0 2:30 2:10 1:50 1:30 1:10 0:45
101.0 2:20 2:00 1:40 1:25 1:05 0:45
102.0 2:10 1:50 1:35 1:15 1:00 0:40
103.0 2:00 1:45 1:25 1:10 0:55 0:35
104.0 1:50 1:35 1:20 1:05 0:50 0:35
105.0 1:40 1:30 1:15 1:00 0:45 0:30
106.0 1:35 1:25 1:10 0:55 0:45 0:30
107.0 1:30 1:15 1:05 0:50 0:40 0:25
108.0 1:20 1:10 1:00 0:50 0:35 0:25
109.0 1:15 1:05 0:55 0:45 0:35 0:25
9PHELCurves
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Product Information
•WIBGETWB-300HeatStressMonitorkit,includes9Valkalinebattery,replacementwicks,
waterbottle,vericationmodule,storagecase,andusermanual.(3MID:70-07160781-9)
Accessories
Product No. Description 3M ID
056-795 3MTMSensorarraywith2inchglobe(oneincluded) 70-0715-8658-3
056-780 3MTMSensorarraywith6inchglobe(oneincluded) 70-0715-8656-7
015-910 3MTM120VACto9VDCtransformer/poweradapter 70-0715-8174-1
015-680 3MTM220VACto9VDCtransformer/poweradapter 70-0715-8507-2
059-045 3MTMTripod 70-0715-8374-7
056-679 3MTMReplacementwicks 70-0715-8373-9
053-923 3MTMVericationmodule 70-0715-8124-6
056-068 3MTM2ozwaterbottle 70-0715-8371-3
Warranty
3M™WIBGET™WB-300LIMITEDWARRANTY.
3MwarrantstheWIBGETWB-300willbefreefromdefectivematerialsandworkmanshipfor one year
from date of purchase (indicatedonthesalesreceipt),provideditismaintainedandusedinaccordance
with3M™instructionsand/orrecommendations.Ifanycomponentbecomesdefectiveduringthewarranty
period,itwillbereplacedorrepairedfreeofcharge.Thiswarrantydoesnotapplytounitsthathavebeen
alteredorhadrepairattempted,orthathavebeensubjectedtoabuse,accidentalorotherwise.Theabove
warrantyisinlieuofallotherexpresswarranties,obligationsorliabilities.THEIMPLIEDWARRANTIESOF
MERCHANTABILITYANDFITNESSFORPARTICULARPURPOSEARELIMITEDTOoneyearFROMTHE
PURCHASEDATE. 3M™shallnotbeliableforanyotherwarranty,expressorimplied,arisingoutofor
relatedtotheappropriateuseofenvironmentaltemperaturemeasurementdataforheatstressrelatedissues.
Manufactureroritsagent’sliabilityshallbelimitedtoreplacementorrepairassetforthabove.Buyer’ssole
andexclusiveremediesarereturnofthegoodsandrepaymentoftheprice,orrepairandreplacementof
defectivegoodsorparts.
10ProductInformation
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Pleaserecycle.PrintedinU.S.A.
3MandWIBGETaretrademarksof3M
UsedunderlicenseinCanada
©20113MCompany
Allrightsreserved.
34-8706-7556-7
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Table of contents
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