Zehntner ZSH 2090 Instruction Manual Download Page 10

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ZSH 2090 Instruction manual

version 3.8

page 10

last update: 24.07.2015

Determining the degree of hardness

Record each end point for gouge and scratch hardness. With some films,
the two end points will be identical.

gouge hardness:

The degree of hardness of the hardest pencil that
will leave the film uncut for a stroke length of at
least 3 mm.

scratch hardness:
(pencil hardness)

The hardest pencil that will not rupture or scratch
the film.

Wolff-Wilborn
hardness:

The degree of hardness of the softest pencil which
damages the surface.

Please mention in your test report which standard the
measurement results refer to.

Table with degree of hardness

The following degrees of hardness are available:

Summary of Contents for ZSH 2090

Page 1: ...werbestrasse 4 CH 4450 Sissach Switzerland Tel 41 0 61 953 05 50 Fax 41 0 61 953 05 51 zehntner zehntner com www zehntner com last update 24 07 2015 page 1 Instruction manual version 3 8 dated 24 07 2...

Page 2: ...gers 4 2 2 Notes regarding safety at work 4 3 Delivery of device 5 3 1 Damages during carriage 5 3 2 Standard delivery 6 3 3 Options 6 4 Preliminaries 7 4 1 Pencil preparation 7 4 2 Inserting the penc...

Page 3: ...this manual Some of the images shown in this instruction manual are of a pre production model and or are computer generated therefore the design features on the final version of this instrument may di...

Page 4: ...manual completely In particular the safety precautions and warnings The ZSH 2090 is exclusively designed for the determination of the scratch hardness Any other application is not in accordance with t...

Page 5: ...suspect by your visual impression that damage has occurred make a note of the suspected damage on the delivery receipt or freight papers and get the carrier to sign it Moreover the forwarding agent co...

Page 6: ...to 9H 1 sharpener for releasing cylindrically the lead 1 pencil holder 1 set emery paper No 400 1 certificate of manufacturer 1 carrying case 3 3 Options ACC601 calibration and certification incl cer...

Page 7: ...400 maintaining an exact angle of 90 to the paper until a flat circular surface is obtained Repeat this procedure with the pencil after each test By aid of the sharpener for releasing cylindrically th...

Page 8: ...ate 24 07 2015 4 2 Inserting the pencils Insert the pencils in the hardness tester as follows Place the instrument with the wheels upwards onto its front end Insert the pencil in this way that the lea...

Page 9: ...ncil into the as described in chapter 4 2 Inserting the pencils on page 8 Place the ZSH 2090 on the coating under test The test surface needs to be flat Hold the instrument by the wheel hubs and push...

Page 10: ...hardness of the hardest pencil that will leave the film uncut for a stroke length of at least 3 mm scratch hardness pencil hardness The hardest pencil that will not rupture or scratch the film Wolff...

Page 11: ...n order to avoid damages 9 Technical specification Material hardness tester steel Material pencils wood and graphite Dimensions LxWxH 110 mm x 80 mm x 58 mm 4 33 x 3 15 x 2 28 Weight net approx 1 8 kg...

Page 12: ...ess degree 10 E Exclusion of liability 3 Extent of delivery 6 H Handling 9 Hardness determination 10 I Inserting the pencils 8 Instrument Description 3 Extent of delivery 6 L Liability 3 O Options 6 P...