RayTek MARATHON FA - Typical Slopes

Appendix
56 MarathonSeriesFA/FR
11.3TypicalSlopes
Thefollowingslopesettingsareapproximateandwillvarydependingonthemetalalloyandsurface
finish,aswellastheapplication.Thesearesuppliedhereasexamples.
Settheslopetoa pproximately1.000formeasuringthefollowingmetalswithoxidizedsurfaces:
•StainlessSteel •Cobalt •Steel
•Iron
 •Nickel
Set the slope to approximately 1.060 for measuring the following metals with smooth, clean,
unoxidizedsurfaces:
•Iron •Nickel •Tantalum
•StainlessSteel •Rhodium •Tungsten
•Cobalt •Steel
•Molybdenum •Platinum
Moltenironalsohasanapproximateslopesettingof1.060.
How
todetermineslope?
Themosteffectivewaytodetermineandadjusttheslopeisto takethetemperatureofthematerial
usinga probesensorsuchasanRTD,thermocouple,orothersuitablemethod.Onceyoudetermine
theactualtemperature,adjusttheslopesettinguntilthe sensor’stemperaturereads thesame
asthe
actualtemperaturereading.Thisisthecorrectslopeforthemeasuredmaterial.