Gas-Tec 1D User manual

No.1D
Instructions for
Carbon Monoxide Passive Dosi-Tube
FOR SAFE OPERATION :
 Carefullyreadthismanualbeforeuse.
⚠
CAUTION : If not observed, injuries to the operator or damage to the
product may result.
1.WhenbreakingthePassiveDosi-Tube,keepthetubeawayfromeyes.
2.Donottouchanybrokenglasstubes,piecesandreagentswithbarehand(s).
3.KeeptubesoutofDirectSunlight,whichfadesthediscolourationofthetube.
△
NOTES : For maintaining performance and reliability of the test
results.
1.Usethistubewithinthetemperaturerangeof0-40℃(32-104℉).
2.Usethistubewithintherelativehumidityrangeof0-90%.
3.Thistubemaybeinterferedwithbycoexistinggases.Pleaserefertothe“INTERFERENCES”.
4.TheshelflifeandstorageconditionofthePassiveDosi-tubearemarkedonthelabelofthe
tubebox.
APPLICATION OF THE TUBE :
 UsethistubefordetectingCarbonmonoxideintheairortheindustrialareasand
environmentalatmosphericcondition.
SPECIFICATION :
 (AsaresultofGastec’scommitmenttocontinuedimprovement,specificationsaresubjectto
changewithoutnotice.)
 ThistubemeasuresTWA(time-weightedaverage)gasconcentrationbyutilizingnatural
diffusionofthetargetgaswithoutagassamplingpump.
MeasuringRange 1.04–2000ppm
SamplingHours 0.5–48hours
DetectingLimit 2ppm(10hours)
ColourChange PaleYellow→Brown
ReactionPrinciple CO＋Na2Pd(SO3)2→Pd＋CO2＋SO2＋Na2SO3
Coefcient of Variation: 10% (for 50 to 1000 ppm·hr)
**Shelf Life: Please refer to the Validity Date printed on the tube box.
**Store the tubes in a dark and cool place.
CORRECTION FOR TEMPERATURE, HUMIDITY AND PRESSURE :
Temperature : Nocorrectionisrequired.
Humidity : Nocorrectionisrequired.
Pressure : Nocorrectionisrequired.
MEASUREMENT PROCEDURE :
1.BreakaDosi-tubeatthebreakinglineofthetubebytheoptionalPassiveDosi-TubeHolder
No.710.
2.SettheDosi-tubeintothetubeholderfirmlysothebrokentipdoesn’tappearfromtheedgeof
thetubeholder.Recordthemeasurementstartingtimeonapeel-offnumberedlabelsupplied
witheachboxofthetubesandputthelabelontheDosi-tubeinthetubeholder.
3.Clipthetubeholdertotheclothing(e.g.shirtcollar)forpersonalsamplingorplacetheDosi-
tubeintheworkplacewherethemeasurementisrequired.Whenthesamplingisfinished,
recordthemeasurementfinishingtimeonthelabelontheDosi-tube.
4.Averagegasconcentrationcanbeobtainedfromhalfanhourto48hourssampling.
 Calculatetheactualsamplingtimeandtheaveragegasconcentrationcanbeobtainedbythe
followingformula:
AverageConcentration= Dosi-TubeReading(ppm·hour)
ActualSamplingTime(hours)
5.Toprotectthetubeholderattheshirtcollarfromdroppingduringoperation,itisadvisableto
supportthetubeholderwithastringthroughthesmallholeofthetubeholder.
INTERFERENCES :
Substance Concentration Interference Interference gas only
Chlorine No Nodiscolouration
Nitrogendioxide ≧5ppm −Nodiscolouration
Hydrogensulphide +Reddishbrown
 Thetableoftheinterferencegasesprimarilyexpressestheinterferenceofeachcoexisting
gasinthegasconcentrationrangethatisequivalenttothetargetgasconcentration.
Therefore,thetestresultmaybeaffectedbyothersubstancesnotlistedinthetable.
 Formoreinformation,pleasecontactusoryourGastecrepresentatives.
DANGEROUS AND HAZARDOUS PROPERTIES :
 ThresholdLimitValue-TimeWeightedAveragebyACGIH(2014):25ppm
 ExplosiveRange:12.5–74%
G PASSIVE DOSI-TUBE
GASTEC
G
② ③①
Detecting LayerBreaking Line
50
100
200 300 400 600 800
1000
ppm･hr
1D

DISPOSAL INFORMATION :
 ThisDosi-tubedoesnotcontainanytoxicsubstances.Whendisposingofthetuberegardless
ofwhetherusedorunused,followtherulesandregulationsofthelocalgovernment.
WARRANTY :
 Ifyouhaveanyquestionsregardinggasdetectionandqualityofthetubes,pleasefeelfreeto
contactyourGastecrepresentatives.
Manufacturer:GastecCorporation
8-8-6Fukayanaka,Ayase-City,Kanagawa252-1195,Japan
http://www.gastec.co.jp/
Telephone[phone]Facsimile[phone]
IM011DE1
PrintedinJapan
15D1Z