Altana Hoffman Scratch Hardness Tester Manual Manuel d'utilisateur Page 1

Additives & InstrumentsA member ofMeasure what you see.Hoffman Scratch Hardness TesterManual

253 017 659 EDFIS 0408 Europe

Hoffman ScratchHardness TesterManualCat. No.: 1610BYK-Gardner GmbHLausitzer Str. 8D-82538 GeretsriedGermanyTel. 0-800-gardner (0-800-4273637) +49-

2DescriptionThis instrument consists of an applicator blade The Hoffman Scratch Hardness Tester was developed by the National Paint, Varnish and Lacqu

3General InformationThe Hoffman Scratch Tester consists of a four-wheeled carriage, a balanced beam with a scale of 0-20 arbitrary units and a scratch

4Calibration ProcedureCalibration ProcedurePlace the Hoffman Scratch Tester on a at, level surface with the wheels of the roller carriage contacting

5Calibration Procedure• At this point, a small upward tap on the scale arm should cause it to settle in a higher position; the scratching tool is not

6OperationBefore initial setup, please remove protective lm from the scale arm (balanced beam). In operation, small and/or large riders are attached

7hand on the carriage platform directly over the pair of wheels nearest to the scratching tool, using sufcient downward pressure to lift the counterp

8Maintenance and CareThe scratching tool should be rotated between series of tests to equalize wear; and replaced when the edge becomes dulled. It is