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Model9060ZManual
16
Probescanbemountedatanyangle.However,iftheprobeistobemountedonaverticalductwall,it
isbettertoangletheprobe(approx.15°)downtoavoidprocesscondensationinsidethecoldendof
theprobe.Ifthereareanyparticulatesinthefluegas,afiltercanbeomittedbypointingtheprobe
verticallydownwards.Otherwisethetransmittercanbeconfiguredtoautomaticallypurgethefilters
,
ortheycanbereplaced
periodically.
OxygenProbeMounting
CAUTION
Itisimportantthatthereisnoairinleakageupstreamoftheoxygensensingpointotherwise
therewillbeahighoxygenreading.
Iftheprobeistobeinstalledonabendintheflue,itisbestlocatedontheoutercircumference
ofthebendtoavoiddeadpocketsoffluegasflow.Whilethestandard9060pr
obewitha‘U’
length of 250 mm (10”) will suit most low temperature flue applications, it is occasionally
necessarytohavealongerprobewiththesensingtipinthecentreofthefluegasstream.
Althoughitisrare,occasionallyaprobemaysenseoxygenvastlydifferentlyfromtheaverage
reading in the flue gas. If it occurs, then the probe should be moved, or a longer probe
installed.Thisphenomenonisnormallycausedbystratificationofthefluegas.