Ametek Land Cyclops L Series

Portable Thermometers
User Guide
Cyclops L
11 - 2
Miscellaneous
Material Cyclops 100L Cyclops 160L
Asbestos Board/paper/cloth 0.90 0.90
Asphalt 0.85 0.85
Carbon Graphite 0.85 0.85
Soot 0.95 0.95
Cement&Concrete 0.65 0.70
Cloth-All types close weave
(Open weave reduces emissivity)
0.75 0.80
Glass 3mm thick - -
6mm thick - -
12mm thick - -
20mm Thick 0.80 -
11.2 Practical determination of Emissivity value
Formanyapplications,suchasmetalalloys,itisnotpossibletospecifyaxed
emissivityvalue.Insuchinstances,itispossibletomakeanin-situ,practical
determinationoftherequiredemissivitysettingbycomparisonwithareference
measurementsuchasathermocouplereading.
Theprocedurefordoingthisisasfollows:
1) Sightthethermometerontothetargetsurfaceatthechosenmeasurement
point.Allowthereadingtostabiliseandreleasethetriggertofreezethe
readingsonthesidedisplay.
Note:Donottouchthetriggeragainuntiltheprocedurehasbeen
nished.
2) Usingathermocoupleorreferenceinstrument,measurethetemperature
atthetargetlocation.
3) PresstheSelectkey
to go into the Menumode,presstheDown
arrowkey
toselectthe e settingandpresstheSelectkey toselect
thisoption.
4) Thescreenwilldisplaythecurrentemissivityvalueandthelastmeasured
temperaturevalue.
5) UsetheUp
andDown keystochangetheemissivityvalue.The
temperaturereadingwillchangetoindicatethevaluethatwouldhave
beenobtainedatthenewemissivitysetting.
6) Continueadjustingtheemissivityvalueupordownuntilthedisplayed
temperatureagreesascloselyaspossibletothereferencetemperature.
7) PresstheSelectkey
tostorethenewemissivityvalue,presstheUp
arrowkeytoreturntotheExiticonandpresstheSelectkey to
return to Measuremode.
 Allsubsequentreadingswillnowusethenewemissivitysetpoint.
 Notethatthenewemissivityvaluewillbestoredatswitch-o.