Extech Instruments CO220 Carbon Monoxide Alarm User Manual


  Open as PDF
of 10
 
10 CO220-en-GB_V1.3 07/13
CO
2
LevelsandGuidelines
IMPORTANTLIABILITYNOTE
TheCO
2
guidelinedataprovidedhereismeantforinformationalpurposesonlyandisnot
intendedasadirectrecommendationfromExtechInstrumentsorFLIRSystems.Theuser
musttakefullresponsibilitywhendetermininghowthisinformationistobeused.
Non‐EnforcedReferencelevels
250‐350ppm–background(normal)outdoorairlevel
350‐1,000ppm‐typicallevelfoundinoccupiedspaceswithgoodairexchange.
1,000–2,000ppm‐levelassociatedwithcomplaintsofdrowsinessandpoorair.
2,000–5,000ppm–levelassociatedwithheadaches,sleepiness,andstagnant,
stale,stuffy
air.Poorconcentration,loss ofattention,increasedheartrateandslightnauseamayalso
bepresent.
>5,000ppm–Exposuremayleadtoseriousoxygendeprivationresultinginpermanent
braindamage,comaandevendeath.
Regulatoryexposurelimits
ASHRAEStandard62‐1989:1000ppm:CO
2
concentrationinoccupied buildingshouldnot
exceed1000ppm.
OSHA:5000ppm:Timeweightedaverageoverfive8‐hourworkdaysshouldnotexceed
5000ppm
Buildingbulletin101(Bb101):1500ppm.UKstandardsforschoolssaythatCO
2
averaged
overtheentireday(i.e.9amto3.30pm)shouldnotexceed1500ppm.
Germany,Japan,Australia,UK:5000ppm,8hoursweightedaverageoccupational
exposurelimitis5000ppm.
Copyright©2013FLIRSystems,Inc.
Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform
www.extech.com

 previous