Alibration – ALTANA Automatic Lift Impact Tester User Manual

Page 9

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#ALIBRATION

¬#ALIBRATION¬

4O¬ASSURE¬GOOD¬REPEATABILITY ¬THE¬TESTER¬SHOULD¬BE¬
CALIBRATED¬TO¬THE¬SAMPLE¬THICKNESS¬BEING¬TESTED¬
4HE¬FOLLOWING¬PROCEDURE¬DESCRIBES¬THE¬CALIBRATION¬
PROCESS¬

2AISE¬THE¬SAFETY¬COVER¬AND¬PLACE¬A¬TEST¬SAMPLE¬OF¬
THE¬THICKNESS¬DESIRED¬UNDER¬THE¬PUNCH¬2EMOVE¬
THE¬AIR¬SUPPLY¬FROM¬THE¬IMPACT¬TESTER¬AND¬ALLOW¬THE¬
WEIGHT¬TO¬SLOWLY¬FALL¬AND¬COME¬IN¬CONTACT¬WITH¬THE¬
PUNCH¬4HIS¬MAY¬TAKE¬ ¬MINUTES¬DEPENDING¬ON¬
THE¬AIR¬CYLINDERS¬LEAKDOWN¬RATE¬

/N¬EACH¬SIDE¬OF¬THE¬TUBE¬ARE¬A¬SERIES¬OF¬HOLES¬
THAT¬ARE¬USED¬TO¬LOCATE¬THE¬STOP¬POSITIONER¬/N¬
THE¬RIGHT¬SIDE¬OF¬THE¬TUBE ¬NEAR¬THE¬BOTTOM ¬IS¬ONE¬
HOLE¬SEPARATED¬FROM¬THE¬REST¬7HEN¬THE¬TUBE¬IS¬
PROPERLY¬CALIBRATED ¬A¬DIMPLE¬MARK¬ON¬THE¬WEIGHT¬IS¬
VISIBLE¬IN¬THIS¬HOLE¬./4%¬¬%ARLY¬PRODUCTION¬UNITS¬
HAVE¬A¬DIMPLE¬MARK¬WHICH¬ALIGNS¬WITH¬THE¬LOWEST¬
STOP¬POSITIONER¬HOLE ¬NOT¬THE¬SEPARATED¬HOLE¬3EE¬
ILLUSTRATION ¬

)F¬THIS¬DIMPLE¬IS¬ALIGNED¬WITH¬THE¬HOLE¬THE¬TUBE¬IS¬
PROPERLY¬CALIBRATED¬FOR¬THIS¬SAMPLE¬THICKNESS¬.OTE¬
THE¬CALIBRATION¬MARK¬ON¬THE¬FRONT¬OF¬THE¬TUBE¬FOR¬
THIS¬SAMPLE¬

)F¬THE¬DIMPLE¬IS¬NOT¬IN¬PROPER¬ALIGNMENT ¬LOOSEN¬
THE¬CLAMP¬SCREW¬APPROXIMATELY¬¬TURNS¬)T¬IS¬NOT¬
NECESSARY¬TO¬REMOVE¬THE¬SCREW¬$O¬NOT¬LOOSEN¬OR¬
REMOVE¬THE¬SET¬SCREW ¬IT¬KEEPS¬THE¬TUBE¬IN¬PROPER¬
ALIGNMENT¬DURING¬THIS¬PROCESS¬

-OVE¬THE¬TUBE¬UP¬AND¬DOWN¬USING¬THE¬STOP¬
POSITIONER¬FOR¬LEVERAGE¬-OVE¬THE¬TUBE¬UNTIL¬THE¬
DIMPLE¬MARK¬IS¬CENTERED¬IN¬THE¬HOLE¬IN¬THE¬TUBE¬

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