Medidores de dureza

 
 
 
 
 
 
 
 
 

// Medidores de dureza - Portables - Serie EX

Asker Durometer Hardness Measurement – Super EX Series

Model EX-A* Type Shore A Normal rubber
Model EX-D* Type Shore D Hard rubber and plastics
Model EX-C* Type Asker C Soft rubber and sponge

Asker is one of the leading manufacturers of hardness testers in the wo rld.
Asker design and precision manufacturing offers you a reliable, highly accurate duromater.
Super EX durometers feature portability, ease of operation, non-destructive measurement and optional peak indicators. They are heavy-duty with high repeatability.
Super EX models are available in Durometer Types: Shore A, Shore D and Asker C.
Hardness is an essential characteristic of various rubber, elastomers and plastic products.
The first step in using a hardness tester is to select the optimum type based upon the material hardness.

*Add “P” to the model number to specify optional peak indicator, for example EXP-A.

 

 

 


Durometer Selection

       Durometer  Standards

Type

Standards

Measuring Force

A

ASTM D-2240

1 Kgf

D

ASTM D-2240

5 Kgf

Asker C

JIS K-7312

1 Kgf

Super EX with optional
Indentor Type   peak indicator


Operation

As the durometer is pressed against the sample, the material resistance force and indentor spring load balance. The depth of the indentor is measured, which provides a measure of the material’s hardness. Values are based upon a 100 point scale (accuracy ±1 point). However, as time elapses the indicator will “creep” back so that a reading taken a few seconds after the indentor makes contact with the sample will be less than the peak reading. Asker durometers offer a peak indicator as an option to more closely monitor the difference between peak and “creep”.

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