Extech CG204 User Manual

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CG204-en-GB_v2.3 5/15

QuickStartInstructions

MeterPower



PressthepowerbuttontoswitchthemeterON.ThedisplaywillswitchON.Ifthedisplaydoesnotswitch

ON,replacethebatteries.

Measurements



Usethesuppliedfilmreferencesandzeroreferencemetalsubstratestolearnhowthemeteroperates

beforemovingtoaprofessionalapplication.Theroundmetalsubstrateistheferrous(magnetic)substrate

andtherectangularshapedmetalsubstrateisthenon‐ferrous(non‐magnetic)substrate.Themeter

automaticallysensesferrousornon

‐ferroussubstrates.

1. Placeareferencefilm(250µm,forexample)ontheround,ferroussubstrate.

2. Placethespring‐loadedmetersensoragainstthereferencefilm.

3. Inthesinglemodethemeterwillemitanaudibletoneindicatingthatthemeasurementhasbeen

taken.

4. Inthecontinuousmodethedisplaywillcontinuallymeasureandupdatethedisplay

5. TheLCDwillshowthereading(250µm)atthecenterofthedisplayarea.

6. Atypicaldisplaywillalsoshowthefollowing:

 NO=1(readingnumberone)onthelowerleftofthe

LCD

 AVG

=250µm(runningaverage)onthelowerright

 DIR=DIRmodeofoperationontheupperleft

 Fe=FerroussubstrateontheupperrightoftheLCD



Experimentwiththeremainingreferencefilmsandthesubstratebeforeusingthemeterprofessionally.

AutomaticPowerOFF

Inordertoconservebatterylife,themeterwillautomaticallyturnoffafterapproximately3minutes.To

defeatthisfeatureusetheprogrammingmenudetailedinthenextsection(menuparameterAUTOPOWER

OFFunderOPTIONS).

LCDBacklightButton

TheLCDisequippedwithbacklightingforeasierviewing,especiallyindimlylitareas.Pressthebacklight

buttontoturnthebacklighton.Pressagaintoturnthebacklightoff.Toenable/disabletheLCDbacklighting,

usetheBACKLIGHTparameterunderOPTIONSintheprogrammingmenu.

FactoryDefaultReset

Torestorethemetertoitsoriginalfactorydefaultsettings:

1. TurnthemeterOFF.

2. PressandholdtheZERObuttonwhileswitchingthemeterON.

3. Whenthemeterpowersup,thedisplaywillpromptforaYESorNO.

4. PresstheSETbuttonforYESorthe

CANCELbuttonforNO.

5. Notethatalldatainallmemorylocationswillbeerased,inadditiontostatistics,calibrationvalues,

andalarmlimits.

DIR

AVG=250

NO=1

250

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Extech ‎CG204 CG204 Coating Thickness Tester

User Manual - Page 3