Extech Instruments NON-DISPLAY PORTABLE Specifikace stáhnout pdf (Strana 9)

CG204-EU-EN v2.2 8/13

Zerocalibration

1. Placethemeteronanuncoatedsectionofthematerialtobe

measuredoronthereferencesubstrateprovided.Useeitherthe

FerrousorNon‐Ferrousreferenceasrequiredbythemeasurement

application.

a. PlacetheprobeontheuncoatedsubstrateandwatchtheLCD

readings.

b. Whenthereadings

appearstable,liftthemeteroffthesubstrate

c. PressandHoldtheZerobuttonfor2seconds(beep).TheZero

calibrationisnowcomplete.

2. Themeterisnowreadyformeasurements

Calibration

Themeter’saccuracycanbeenhancedbyperformingacalibrationusingthereferencefilmssupplied.

1. Performazerocalibrationasstatedabove

2. Performarangecalibrationusingareferencefilm.

a. Placeoneofthereferencefilmsonthesubstrate.

b. Placethemeteronthecalibrationreferencefilm

and

watchtheLCDreadings.

c. Whenthereadingsappearstable,liftthemeteroffthe

substrate

d. Press“MENU”andthenscrolldown“▼”to

“Calibration”.

e. Press“Select”tohighlightthe“Enable”functionand

thenpress“Select”.

f. Press“Esc”and

themeterwillenterthecalibration

mode.

g. Adjustthereadingtomatchtheknownvalueofthereferencefilmusingthe▲and▼

buttons.

h. TurnthemeterOFFtoexitandsavethecalibrationdata

3. Themeterisnowcalibratedtothebasematerialandthicknessused.



4. PerformStep2asneededusingtheotherreferencefilms.

Notes:

1. CalibrationdataisstoredintomemoryitisnoterasedwhenthemeteristurnedOFF.

2. Frequentlywipethesensorcontactwithacleanlintfreeclothtoremoveanyparticlesonthesensor

tip.

Duringcalibrationthe▲and▼buttonsadjusttheinternalcalibrationfactorswithhighresolution.

Thedisplayresolutionmaybesuchthatitmaytakeupto10pressestoseea1digitchangeonthe

display.

Multi‐pointCalibration

Thismethodrequiresperformingtwoormoresequentialsinglepointcalibrations.Forbestresults,the

expectedcoatingthicknessmeasurementsshouldbewithinthecalibrationpoints.

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Extech Instruments NON-DISPLAY PORTABLE Specifikace Strana 9

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