RayTek FA Manual

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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approximately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.