User manual

EXTECHINSTRUMENTS
 5CO30‐en‐GB_v1.711/16
RelativeHumidityCompensationAdjustment
When isshownonthedisplay,pressandholdtheControlbuttontoentertherelative
humiditycompensationadjustmentmode.MomentarilypresstheControlbuttontomakea
stepchangein theRH%offset;therangeis‐9to+9RH%.Whendone,pressandholdthe
Controlbuttonto
savethesetting.Themeterwillreturntothenormalmode.
Note:Toperformanaccurateoffsetadjustment,astandardreferenceisrequiredfor
comparison.
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Warning: While performing temperature or RH%compensation adjustments do nottouch
the slotted openings on the meter housing, these are  where the sensors are located.
Otherwise,accuracymaybecompromised.
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Note:Ifthe meterdisplays ‘ ’pressthe Control buttonto
steptothenextsetting.
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AlarmBeeperThresholdSelection
When isshownonthedisplay,pressandholdtheControlbutton.Thefactorydefault
settingwillflash.MomentarilypresstheControlbuttontochoosea25ppm,30ppm,
35ppm,50ppm,100ppm,or200ppmthreshold.Aftertheselection,pressandholdthe
Controlbuttontosaveandreturntothenormalmode.
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Thealarmbeeperpromptspersonneltoevacuateanareabecauseofthedetectionof
unsafeconcentrationsofCO.ThemeteralarmswhentheCOconcentrationexceedsthe
defaultoruser‐programmedthreshold.
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Thebeepermaybetemporarilysilencedforapproximately4minutesbypressingthe
Controlbutton.Afterthistime,ifthemetercontinuestodetectaCOconcentration
exceedingthethreshold,itwillalarmagain.Forsafetypurposes,themeteralarmfunction
cannotbecompletelydisabled.